User Manual

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User Manual SRT 1F Synchronous Radio for Trunk Applications UMN 911-362/02C0000 Issue 3, May 2004 UMN SRT 1F Copyright (C): Fujitsu/Siemens 2004 Siemens Mobile Communications S.p.A. 2004 V.le Piero e Alberto Pirelli, 10 I-20126 Milano Issued by Customer Documentation Department S.S. 11 Padana Superiore, km 158 I-20060 Cassina de’ Pecchi MI DISCLAIMER Siemens Mobile Communications may have patents, patent applications, trademarks, copyrights, or other intellectual property rights relevant to the subject matters present in this document. If not explicitly defined by a license agreement written by Siemens Mobile Communications, the ownership of this document does not give any use license for the above mentioned patents, trademarks, copyrights, or other intellectual properties. For your convenience, Siemens Mobile Communications may make this document available. The entire risk deriving from the use, or the results of the use, of this document are at user’s charge. The information contained in this document is subjected to changes without notice. Technical specifications and features are binding only insofar as they are specifically and expressly agreed previously in a written contract. Siemens Mobile Communications gives no assurance relevant to the accuracy of the results or of the output deriving from such information. In case of utilization of the information transferred by means of this document, we advise You to verify if the export licenses, required by the laws, have been granted or if there are not any other impediments arising from the laws in course in Italy, Germany or relevant to the export. ii SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1 Table of Contents GENERAL DESCRIPTION .......................................................................................1-1 1.1 Introduction to the SRT 1F Radio Equipment..........................................1-1 1.2 Equipment Features ...............................................................................1-1 1.3 SRT 1F Equipment Details .....................................................................1-6 1.3.1 Ordering Guide .......................................................................................1-6 1.3.2 BRU (Branching Network Unit) .............................................................1-16 1.3.2.1 BRU for N+1 or 2x(N+1) Co-Channel - Standard Terminal ...................1-16 1.3.2.2 BRU for N+1 Double Terminal ..............................................................1-16 1.3.2.3 BRU for 1+1 Not Expandible Terminal ..................................................1-16 1.3.2.4 MSTU (Main Signal Transmission Unit) ................................................1-16 1.3.2.5 SCSU (Supervisory, Control and Switching Unit) ..................................1-17 1.3.2.6 BBIU (Baseband Interface Unit)............................................................1-17 1.4 General Specifications ..........................................................................1-18 1.4.1 General Information ..............................................................................1-18 1.4.2 Transmitter (TX) ...................................................................................1-19 1.4.3 Receiver (RX) .......................................................................................1-23 1.4.4 Modulator (MOD) ..................................................................................1-24 1.4.5 Demodulator (DEM) ..............................................................................1-24 1.4.6 Digital Processing .................................................................................1-25 1.4.7 Overall ..................................................................................................1-27 1.4.8 RF Interference.....................................................................................1-33 1.4.9 Countermeasures to Fading .................................................................1-34 1.4.10 Signal Interface for STM-1 System .......................................................1-35 1.4.10.1 Base Band Signal Interface ..................................................................1-35 1.4.10.2 Base Band for Optical STM-1 Interface ................................................1-35 1.4.10.3 Base Band for Electrical STM-1 Interface .............................................1-36 1.4.10.4 Jitter......................................................................................................1-36 1.4.10.5 Alarm Indication Signal (AIS) ................................................................1-36 1.4.10.6 BSI........................................................................................................1-37 1.4.11 Auxiliary Signal Interface ......................................................................1-37 1.4.11.1 Radio User Channel (RUC)...................................................................1-37 1.4.11.2 Way Side (WS) .....................................................................................1-37 1.4.11.3 Order Wire (OW) ..................................................................................1-38 1.4.11.4 User Channel (UC) ...............................................................................1-38 1.5 Mechanical Specification.......................................................................1-39 1.5.1 General.................................................................................................1-39 1.5.2 Rack construction .................................................................................1-45 SRT 1F 911-362/02C0000 Issue 3, May 2004 i Table of Contents ii UMN 1.5.2.1 7+1 , 2x(7+1)CC, 3+1DT rack construction...........................................1-45 1.5.2.2 1+1 Not Expandible rack construction...................................................1-46 1.5.3 Inter-Rack Connections ........................................................................1-46 1.5.4 Rack Layout..........................................................................................1-47 1.5.4.1 N+1 / 2x(N+1)CC TERMINAL ...............................................................1-47 1.5.4.2 N+1 DOUBLE TERMINAL ....................................................................1-49 1.5.4.3 1+1 NOT EXPANDIBLE TERMINAL .....................................................1-50 1.5.5 Unit Layout............................................................................................1-51 1.5.5.1 MSTU shelf ...........................................................................................1-51 1.5.5.2 SCSU shelf ...........................................................................................1-52 1.5.5.3 BBIU shelf.............................................................................................1-53 1.5.5.4 1+1 N.E. shelf .......................................................................................1-54 1.6 Environmental Specification..................................................................1-55 1.7 Power Requirements ............................................................................1-56 1.7.1 General.................................................................................................1-56 1.7.2 Unit Power Consumption ......................................................................1-56 1.7.3 Overall Consumption ............................................................................1-57 1.7.3.1 N+1 /2x(N+1)Terminal ..........................................................................1-57 1.7.3.2 2x(N+1)Double Terminal.......................................................................1-57 1.7.3.3 1+1 N.E. Shelf ......................................................................................1-57 1.8 Frequency Plan and Antenna System...................................................1-58 1.8.1 General Information ..............................................................................1-58 1.8.2 Frequency Plan.....................................................................................1-58 1.8.2.1 U4 GHz Band Frequency Allocation (ITU-R F.382-6)............................1-63 1.8.2.2 4 GHz Band Frequency Allocation (ITU-R F. 635-3) .............................1-64 1.8.2.3 5 GHz Band Frequency Allocation (ITU-R F.1099 Annex-1) .................1-65 1.8.2.4 L6 GHz Band Frequency Allocation (ITU-R F. 383-5) ...........................1-66 1.8.2.5 U6 GHz Band Frequency Allocation (ITU-R F. 384-5)...........................1-67 1.8.2.6 L7 GHz Band Frequency Allocation (ITU-R F. 385-6) ...........................1-68 1.8.2.7 U7 GHz Band Frequency Allocation (ITU-R F. 385-6)...........................1-69 1.8.2.8 L8 GHz Band Frequency Allocation (ITU-R F. 386-4) ...........................1-70 1.8.2.9 11 GHz Band Frequency Allocation (ITU-R F. 387-6) ...........................1-71 1.8.2.10 11 GHz Band Frequency Allocation (ITU-R F. 387-6 Annex-2) .............1-73 1.8.3 13 GHz Band Frequency Allocation (ITU-R F.497-4) ............................1-75 1.8.4 RF Branching Network..........................................................................1-76 1.8.4.1 RF Branching Network (7+1) or 2x(7+1) ...............................................1-76 1.8.4.2 RF Branching Network (Double Terminal) ............................................1-78 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN Table of Contents 1.8.4.3 2 BRU (1+1 NE).......................................................................................1-80 EQUIPMENT DESCRIPTION....................................................................................2-1 2.1 Equipment Configurations and Features.................................................2-1 2.1.1 SRT 1F System ......................................................................................2-1 2.1.1.1 Terminal..................................................................................................2-2 2.1.1.2 Double Terminal .....................................................................................2-4 2.1.1.3 1+1 N.E.Terminal....................................................................................2-6 2.1.2 Baseband Interface.................................................................................2-8 2.1.2.1 N+1 / 2x(N+1) .........................................................................................2-8 2.1.2.2 N+1 Double Terminal..............................................................................2-8 2.1.2.3 1+1 NE ...................................................................................................2-8 2.1.3 Alternated and Co-channel Operation.....................................................2-9 2.2 STM-1 Signal Transmission ..................................................................2-16 2.2.1 STM-1 Electrical Signal Interface..........................................................2-16 2.2.2 Main Signal Flow (MSTU Function).......................................................2-16 2.2.3 Space Diversity.....................................................................................2-20 2.2.4 MSTU Front Panel ................................................................................2-21 2.2.4.1 Top View of MSTU Adapter ..................................................................2-23 2.2.5 Engineering Orderwire (OW) ................................................................2-24 2.2.6 User Channel (UC) ...............................................................................2-25 2.2.7 Radio User Channel (RUC)...................................................................2-26 2.2.8 Wayside Traffic (WS)............................................................................2-27 2.2.9 Digital Communication Channel (DCC) .................................................2-28 2.3 OverHead Bit Access for SRT 1F System.............................................2-29 2.3.1 MSOH and RSOH.................................................................................2-30 2.3.2 RFCOH.................................................................................................2-32 2.4 Radio Protection Switch System ...........................................................2-36 2.4.1 Outline of Radio Protection Switching ...................................................2-36 2.4.2 USW and BSW .....................................................................................2-38 2.4.3 Switching Priority ..................................................................................2-40 2.4.4 Switching Initiator and Operation Time .................................................2-41 2.4.5 Occasional Traffic (option) ....................................................................2-42 2.5 Supervisory, Control & Switching Unit (SCSU)......................................2-43 2.5.1 Signal Interface.....................................................................................2-45 2.5.2 Bipolar Switch (BSW) unit.....................................................................2-45 2.5.3 Supervisory (SV) unit ............................................................................2-45 2.5.4 Timing Control Unit (TCU) ....................................................................2-50 SRT 1F 911-362/02C0000 Issue 3, May 2004 iii Table of Contents 3 iv UMN 2.5.5 Housekeeping (HK) unit........................................................................2-50 2.5.6 Embedded Communication Unit (ECU) (option)...................................2-51 2.5.7 Occasional Interface (OCC INTF) unit (option) ....................................2-51 2.5.8 Baseband Switch Interface (BSW INTF) unit (option) ..........................2-52 2.6 Baseband Interface Unit (BBIU)............................................................2-52 2.6.1 Optical Interface (OPT INTF) unit .........................................................2-52 2.6.2 MSP SW and BBC................................................................................2-56 2.7 Applications ..........................................................................................2-59 2.7.1 Co-Channel Operation ..........................................................................2-59 2.7.2 Synchronization ....................................................................................2-61 2.7.2.1 Synchronization Source ........................................................................2-61 2.7.2.2 Synchronization Mode...........................................................................2-62 2.7.2.3 Clock Mode...........................................................................................2-64 2.7.2.4 Quality Level (S1 byte)..........................................................................2-64 2.7.2.5 Line Clock Priority.................................................................................2-65 2.7.3 Orderwire Applications..........................................................................2-66 2.7.3.1 Orderwire Extension .............................................................................2-66 2.7.3.2 Digital-Through .....................................................................................2-66 2.7.3.3 Ring Protection .....................................................................................2-66 INSTALLATION ........................................................................................................3-1 3.1 Installation preliminaries\ ........................................................................3-1 3.1.1 Storage, Unpacking and Inspection ........................................................3-1 3.1.1.1 Storage ...................................................................................................3-1 3.1.1.2 Preparation .............................................................................................3-2 3.1.1.3 Unpacking and Inspection.......................................................................3-2 3.1.1.4 General Unpacking Method ....................................................................3-2 3.1.2 Storage of Spare Units ...........................................................................3-2 3.1.3 Accessories ............................................................................................3-3 3.2 Optical Fiber Cables and Jumpers ..........................................................3-3 3.2.1 Warning and General Handling...............................................................3-3 3.2.1.1 Tools Required .......................................................................................3-3 3.2.1.2 Warning Messages .................................................................................3-3 3.2.1.3 Storage ...................................................................................................3-4 3.2.1.4 Handling .................................................................................................3-4 3.2.2 Connection and Disconnection of Optical Cables....................................3-6 3.2.2.1 Tools Required .......................................................................................3-6 3.2.2.2 Preparation .............................................................................................3-6 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN Table of Contents 3.2.2.3 Connection Procedure ............................................................................3-6 3.2.2.4 Disconnection Procedure ........................................................................3-6 3.2.3 Cleaning of Optical Cables and Connectors............................................3-6 3.2.3.1 Tools Required .......................................................................................3-6 3.2.3.2 Procedure ...............................................................................................3-7 3.2.4 Inspection of Optical Cables and Connectors .........................................3-7 3.2.4.1 Connector End-face Definitions ..............................................................3-7 3.2.4.2 End-face Zone Definitions.......................................................................3-7 3.2.4.3 Defect Definitions....................................................................................3-8 3.2.4.4 Scratch and Pit Defects ..........................................................................3-8 3.2.4.5 Chip Defects ...........................................................................................3-9 3.2.4.6 Crack Defects .......................................................................................3-10 3.2.4.7 Tools Required .....................................................................................3-11 3.2.4.8 Procedure .............................................................................................3-11 3.3 Rack Installation ...................................................................................3-11 3.3.1 Precautions...........................................................................................3-11 3.3.1.1 Suitable Places for Equipment Installation ............................................3-11 3.3.2 Safety Measures for Equipment Handling.............................................3-12 3.3.3 Tools Required .....................................................................................3-12 3.3.4 Preparation ...........................................................................................3-12 3.3.4.1 Bay Mounting........................................................................................3-13 3.3.4.2 Bay Securing ........................................................................................3-13 3.3.5 Rack Configuration ...............................................................................3-14 3.3.5.1 N+1 Terminal configuration...................................................................3-15 3.3.5.2 N+1 Double Terminal configuration.......................................................3-16 3.3.5.3 1+1 Not expandible configuration..........................................................3-17 3.4 N+1/2x(N+1)/N+1 D. T. configuration installation..................................3-18 3.4.1 Shelf installation....................................................................................3-18 3.4.2 How to Install Shelves & Units ..............................................................3-20 3.4.2.1 Preparation of Shelves..........................................................................3-20 3.4.2.2 Mounting of Shelves .............................................................................3-22 3.4.2.3 Mounting of Slide-In Units.....................................................................3-24 3.4.3 Inter Shelf Connections.........................................................................3-28 3.4.3.1 SRT 1F Input ........................................................................................3-28 3.4.3.2 Waveguide Connection.........................................................................3-29 3.4.3.3 Connection of Primary Power Lead.......................................................3-32 3.4.3.4 AMP hand Crimping Tool ......................................................................3-39 SRT 1F 911-362/02C0000 Issue 3, May 2004 v Table of Contents 4 vi UMN 3.4.3.5 Frame Grounding..................................................................................3-43 3.4.3.6 Waveguide Pressurization and Alarms .................................................3-46 3.4.3.7 Semi-Rigid Coaxial Connectors ............................................................3-46 3.4.3.8 Inter shelf Connection for RPS, SV, and DCC ......................................3-49 3.4.3.9 Baseband Signal Cable Connection......................................................3-51 3.4.3.10 Wayside Signal Cable Connection........................................................3-57 3.4.3.11 Inter shelf connection for Co-Channel operation ...................................3-59 3.4.3.12 Inter connection for DCC line through LAN ...........................................3-62 3.4.4 Connector and Connector Pin Assignment ...........................................3-65 3.4.4.1 Terminal Type.......................................................................................3-65 3.4.4.2 Double Terminal Type...........................................................................3-82 3.5 1+1 Not Expandible configuration installation........................................3-92 3.5.1 Shelf installation....................................................................................3-92 3.5.1.1 RF Port Arrangement............................................................................3-92 3.5.1.2 Shelf Dimensions..................................................................................3-93 3.5.1.3 Port Position .........................................................................................3-94 3.5.1.4 Rack Mount Material .............................................................................3-95 3.5.1.5 Assembly of SRT1F 1+1 NE shelf in the rack .......................................3-96 3.5.1.6 Assembly of SRT1F 1+1 NE shelf in the rack .......................................3-97 3.5.1.7 Assembly of SRT1F 1+1 NE shelf in the rack .......................................3-98 3.5.2 Connection of Primary Power Lead.......................................................3-99 3.5.3 Baseband Signal Cable Connection....................................................3-100 3.5.3.1 STM-1 electrical signal Interface.........................................................3-100 3.5.3.2 STM-1 optical signal Interface.............................................................3-101 3.5.3.3 Inter shelf connection for Co-Channel operation .................................3-102 3.5.4 Connector and Connector Pin Assignment .........................................3-103 3.5.4.1 Connector Layout ...............................................................................3-103 ACCEPTANCE AND TURN-UP ................................................................................4-1 4.1 ACCEPTANCE OF THE SRT 1F ............................................................4-1 4.1.1 Perform Overall Visual Inspection...........................................................4-1 4.1.2 Check Incoming Power Supply at SRT 1F Rack .....................................4-2 4.1.2.1 Test Equipment Required .......................................................................4-2 4.1.2.2 Procedure ...............................................................................................4-2 4.2 Installation of the SRT 1F Slide-in Units..................................................4-3 4.2.1 Warning Messages .................................................................................4-3 4.2.1.1 Laser Warning ........................................................................................4-3 4.2.1.2 Electrostatic Discharge Warning.............................................................4-3 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN Table of Contents 4.2.2 Slide-In Installation Procedures ..............................................................4-5 4.2.3 Insertion and Removal of Slide-in Units ..................................................4-5 4.2.3.1 Inserting a Slide-In Unit...........................................................................4-6 4.2.3.2 Removing a Slide-In Unit ........................................................................4-7 4.2.3.3 Removing an Optical Unit .......................................................................4-8 4.2.4 Installing the MSTU Unit .........................................................................4-9 4.2.5 Installing SCSU Unit ...............................................................................4-9 4.2.6 Installing BBIU Unit ................................................................................4-9 4.2.7 Installing the Optical Interface (OPT INTF) Unit......................................4-9 4.2.7.1 Procedure ...............................................................................................4-9 4.3 SRT 1F Acceptance and Turn-Up Tests ...............................................4-10 4.3.1 Warning Messages ...............................................................................4-10 4.3.1.1 Laser Warning ......................................................................................4-10 4.3.1.2 Inserting Plug–in Units ..........................................................................4-10 4.3.1.3 Electrostatic Discharge Warning...........................................................4-11 4.3.2 SRT 1F In-Station, Inter-Station and End to End Tests.........................4-12 4.3.3 Test Equipment Required .....................................................................4-13 4.4 Waveguide and Antenna Alignment Tests ............................................4-14 4.4.1 Waveguide Sweeping ...........................................................................4-14 4.4.1.1 Procedure for Return Loss Measurement .............................................4-14 4.4.2 Antenna Alignment ...............................................................................4-16 4.4.2.1 AGC Current Monitoring .......................................................................4-16 4.4.2.2 Antenna XPIC Optimization ..................................................................4-17 4.4.3 Waveguide Pressurization and Alarms .................................................4-17 4.5 SRT 1F In-Station Performance Tests ..................................................4-18 4.5.1 Hardware Settings ................................................................................4-18 4.5.1.1 Default Values ......................................................................................4-18 4.5.2 Provisioning (Software Settings) ...........................................................4-18 4.5.2.1 Default Values ......................................................................................4-18 4.5.3 Transmit (TX) Local OSC Frequency....................................................4-19 4.5.3.1 Equipment Required .............................................................................4-19 4.5.3.2 Specification .........................................................................................4-19 4.5.3.3 Test Procedure .....................................................................................4-21 4.5.4 Transmit Output Power Level................................................................4-22 4.5.4.1 Equipment Required .............................................................................4-22 4.5.4.2 Specification .........................................................................................4-22 4.5.4.3 Test Procedure .....................................................................................4-22 SRT 1F 911-362/02C0000 Issue 3, May 2004 vii Table of Contents viii UMN 4.5.5 Transmit Spectrum ...............................................................................4-25 4.5.5.1 Equipment Required .............................................................................4-25 4.5.5.2 Specification .........................................................................................4-25 4.5.5.3 Test Procedure .....................................................................................4-26 4.5.6 Receiver (RX) AGC Range ...................................................................4-28 4.5.6.1 Equipment Required .............................................................................4-28 4.5.6.2 Test Procedure .....................................................................................4-28 4.5.7 Optical Output Power Level ..................................................................4-31 4.5.7.1 Equipment Required .............................................................................4-31 4.5.7.2 Specification .........................................................................................4-31 4.5.7.3 Test Procedure .....................................................................................4-31 4.5.8 Minimum and Maximum Optical Receive Level .....................................4-34 4.5.8.1 Test Procedure .....................................................................................4-34 4.5.9 External Clock Supply...........................................................................4-36 4.5.9.1 Warning Messages ...............................................................................4-36 4.5.9.2 Test Procedure .....................................................................................4-36 4.5.10 Rack Alarm Test ...................................................................................4-39 4.5.10.1 Equipment Required .............................................................................4-39 4.5.10.2 Test procedure......................................................................................4-39 4.5.10.3 Interface Specification ..........................................................................4-39 4.6 SRT 1F Inter-Station Tests ...................................................................4-41 4.6.1 Receive (RX) Signal Level ....................................................................4-41 4.6.1.1 Equipment Required .............................................................................4-41 4.6.1.2 Test Procedure .....................................................................................4-41 4.6.2 IF FREQUENCY RESPONSE...............................................................4-42 4.6.3 SPACE DIVERSITY EQUALIZATION...................................................4-46 4.6.4 ATPC Test (End to End LAB Test)........................................................4-51 4.6.4.1 Equipment Required .............................................................................4-51 4.6.4.2 Test Procedure .....................................................................................4-51 4.7 SRT 1F End to End Station Performance Tests....................................4-54 4.7.1 Remote NE Management via DCC .......................................................4-54 4.7.1.1 DCC configuration ................................................................................4-54 4.7.1.2 Test ......................................................................................................4-56 4.7.2 Radio Protection Switch (RPS) Test .....................................................4-58 4.7.2.1 Equipment Required .............................................................................4-58 4.7.2.2 Test Procedure .....................................................................................4-58 4.7.3 Way Side Test ......................................................................................4-61 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 5 Table of Contents 4.7.3.1 Equipment Required .............................................................................4-61 4.7.3.2 Way Side Transmission Test ................................................................4-61 4.7.4 BER Characteristics Test (Lab Test).....................................................4-64 4.7.4.1 Equipment Required .............................................................................4-64 4.7.4.2 Specification .........................................................................................4-64 4.7.5 BACKGROUND BER TEST..................................................................4-68 4.7.6 Synchronization ....................................................................................4-70 4.7.6.1 Clock Sources selection........................................................................4-70 4.7.6.2 Test ......................................................................................................4-72 4.7.7 MSP Switching Test..............................................................................4-73 4.7.7.1 Test Procedure .....................................................................................4-73 4.8 Appendix...............................................................................................4-75 4.8.1 MSTU Setting .......................................................................................4-75 4.8.1.1 MSTU Front Panel ................................................................................4-76 4.8.1.2 DADE setting for SD .............................................................................4-79 4.8.2 Hardware Setting ..................................................................................4-81 4.8.2.1 SV unit ..................................................................................................4-83 4.8.2.2 TCU unit (002AA): N+1 Terminal .........................................................4-84 4.8.2.3 TCU unit (003AA): Double Terminal......................................................4-85 4.8.2.4 BSW unit ..............................................................................................4-86 4.8.2.5 OCC INTF unit ......................................................................................4-87 4.8.2.6 PE INTF unit .........................................................................................4-88 4.8.3 Provisioning through LCT .....................................................................4-89 OPERATION & MAINTENANCE ..............................................................................5-2 5.1 LED Indications.......................................................................................5-2 5.2 LCT.........................................................................................................5-6 5.2.1 Start-up LCT Operation...........................................................................5-7 5.2.2 Alarm (Condition) Type and Description ...............................................5-12 5.2.3 Performance Monitor ............................................................................5-20 5.2.4 Analog Monitor......................................................................................5-23 5.2.5 Radio Section Physical Interface (RSPI) ...............................................5-25 5.3 Radio Protection Switch ........................................................................5-26 5.3.1 Automatic Switching and Status Indication............................................5-28 5.3.2 Manual Control .....................................................................................5-28 5.3.3 SW PM Data.........................................................................................5-29 5.3.4 Auto Refresh.........................................................................................5-29 5.3.5 Notice for RPS Operation .....................................................................5-30 SRT 1F 911-362/02C0000 Issue 3, May 2004 ix Table of Contents A 5.3.5.1 Power off of SCSU................................................................................5-30 5.3.5.2 Lockout .................................................................................................5-30 5.3.5.3 Power off of MSTU ...............................................................................5-30 5.4 Maintenance Control of Other Functions...............................................5-31 5.4.1 Loop Back.............................................................................................5-31 5.4.2 Protection Switch Operation (MSP).......................................................5-33 5.4.2.1 Multiplex Section Protection..................................................................5-33 5.4.2.2 TCU unit Protection ..............................................................................5-33 5.4.2.3 Synch Switch ........................................................................................5-33 5.4.3 ALS Release.........................................................................................5-34 5.5 Unit Replacement .................................................................................5-35 5.5.1 Fan Replacement .................................................................................5-35 5.5.2 MSTU and Other Units..........................................................................5-37 5.5.3 SV unit Replacement ............................................................................5-38 5.5.4 Returning Replaced Unit .......................................................................5-41 5.6 APPENDIX............................................................................................5-43 5.6.1 LCT Command Tree and Functions......................................................5-43 APPENDIX................................................................................................................... 1 A.1 x UMN Abbreviation of SRT 1F Terms................................................................... 1 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1 1. GENERAL DESCRIPTION GENERAL DESCRIPTION 1.1 Introduction to the SRT 1F Radio Equipment The SRT 1F series radio equipment is a high capacity (155 Mbit/s STM1) system designed for trunk line transmission applications. The SRT 1F series operate in the 4/5/U6/11 GHz radio frequency bands with 40 MHz frequency spacing, and in the U4/L6/7/L8/13 GHz radio frequency bands with 28.00, 29.00 and 29.65 MHz frequency spacing. The equipment is fully solid state and is designed to meet ITU-T and ITU-R Recommendations for long haul and high capacity digital microwave radio systems. The modulation scheme used is 64/128 QAM Multi-Level Coded Modulation (MLCM) with forward error correction. The SRT 1F can be used in various types of SDH networks such as ring, media diversity or linear configurations, and over various communication routes , i.e., waterways, mountains, inter or intra-city routes. The SRT 1F accepts one synchronous 155 Mb/s (STM-1) signal per RF frequency for alternated operation, or two synchronous 155 Mb/s (STM1) signals per RF frequency for co-channel operation. The protection schemes are: • Alternated Operation: N+1 / 1+1N.E. / N+1D.T. • Co-Channel Operation: 2x(N+1) / 1+1N.E./ 2x(N+1)D.T. Various optional functions are provided, such as 2 Mb/s wayside traffic (carried by RFCOH and SOH respectively) and digital service channels (carried by RFCOH). Each RF channel can carry two wayside signals plus two digital service channels, and all protected by the N+1 Radio Protection System (RPS). 1.2 Equipment Features The main features of the SRT 1F series radio equipment are; • Completely solid-state • Fully SDH (Synchronous Digital Hierarchy) compatible digital radio. • Interconnectabilityy with other manufacturers’ SDH transmission equipment available. (Further study might be necessary for undefined overhead bytes,etc.) • SDH STM-1 optical interface available as an option. • 1+1 protected STM-1 optical interface for Multiplex Section Protection (MSP). • Section overhead (SOH) bits insertion/extraction at both terminal and repeater stations, the same as for SDH optical fiber transmission systems. • High power amplifier using GaAs Field Effect Transistor (GaAs FET) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-1 1. GENERAL DESCRIPTION 1-2 UMN • Low power consumption of the RF High Power Amplifier using IF pre-distortion linearity compensation. • Automatic Transmit Power Control (ATPC) is available as standard configuration. • Low noise amplifier using High Electron Mobility Transistor (HEMT) with a noise figure of 1.5 dB (typical) for 4-6 GHz band. • High spectral efficiency of 8.5 bits/sec/Hz using 64 QAM Multi-Level Coded Modulation (64 QAM MLCM) and 11.4 bits/sec/Hz using 128 QAM Multi-Level Coded Modulation (128 QAM MLCM) for cochannel operation. • High efficiency error correction using Multi-Level Coded Modulation (MLCM). • Super high density packaging: Eight (8) complete SDH radio system including Synchronous Equipment Management Function (SEMF) are mounted in one ETSI rack (2200×600×300 mm). • Space diversity reception is available as a standard function (by software-based). In-Phase (IP) combiner is used. • Adaptive demodulator with fully digital linear transversal equalizer (TVE) with decision feedback equalizer (DFE). • Errorless protection switching with early warning detection on fading. • Radio user channel (RUC) for a maximum of 2 channels using RFCOH. Signal interfaces are available for both VF and 64 kb/s signal. 64 kb/s signal interface complies with ITU-T recommendation G.703 for co-directional or contra-directional interface. • One user channel using F1 byte of SOH per STM-1 is also available. • Two 2 Mb/s wayside traffic channels using SOH and RFCOH are available. • Event management facility: Alarms and status of the equipment is reported by the SEMF (Synchronous Equipment Management Function) using the Data Communication Channel (DCC) SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION • Performance management facility: Traffic performance of each hop and of each end-to-end can be monitored on each RF channel. Monitoring items are BBE (Background Block Error), BBER (Background Block Error Ratio), ES(Errored Seconds), ESR(Errored Second Ratio), SES (Severely Error Seconds), SESR (Severely Error Second Ratio), UAS (UnAvailable Seconds) and OFS (Out of Frame Second), number of pointer change and number of MSP and RPS switching. • Configuration management facility: NE configuration is retrieved by the network management terminal and items such as NE ID, and alarm thresholds can be set as “provisioning”. • Resource management facility: Physical inventory such as unit name, can be read by the SEMF. • Security management: Several maintenance levels are provided to avoid malfunction. • LCT is the local terminal for network element (NE) windows NT based. • Software download (SWDL) facility: Firmware used for SRT 1F operation can be remotely downloaded from the network management terminal. • Repeater hardware configuration: Repeater stations and terminals have the same configuration. SRT 1F 911-362/02C0000 Issue 3, May 2004 1-3 1. GENERAL DESCRIPTION UMN SDH MUX SDH MUX SDH Radio SDH Radio SDH MUX LTE ADM 1+N 1+N LTE MS Mode MS Mode Tributary Tributary MS Tributary MS MS Note: MS : Multiplex Section RS : Regenerator Section MS LTE : Line Terminal Equipment ADM : Add Drop Multiplexer Network feature : Multiplex Section Protection (MSP) with Section Adaption (SA). Figure 1-1 - Linear Configuration SDH MUX SDH MUX SDH MUX LTE ADM LTE Tributary Tributary MS MS SDH Radio SDH Radio 1+N or 0+1 1+N or 0+1 MS Mode MS Mode MS Tributary MS Network feature : Network protection switching with media diversity Figure 1-2 - Media Diversity Configuration 1-4 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION MS MS Tributary SDH MUX ADM SDH MUX SDH MUX ADM ADM Tributary Tributary MS SDH Radio SDH Radio 1+N or 0+1 1+N or 0+1 MS Mode MS Mode MS MS Network feature : Network protection switching with ring operation Figure 1-3 - Standard Ring Configuration MS MS Tributary SDH MUX ADM SDH MUX SDH MUX ADM ADM Tributary Tributary MS MS Double Terminal SDH SDH Radio Radio 1+N sys A 1+N sys B SDH Radio 1+N MS Mode MS Mode MS SDH Radio 1+N MS Mode MS Mode MS Network feature : Network protection switching with ring operation Figure 1-4 - Standard Ring Configuration with double terminal solution SRT 1F 911-362/02C0000 Issue 3, May 2004 1-5 1. GENERAL DESCRIPTION 1.3 1.3.1 UMN SRT 1F Equipment Details Ordering Guide Assembling an SRT 1F rack means having to select the proper equipment from the ordering guide. Please contact Siemens’s Sales and Marketing dept. for the current ordering guide. Table 1.1 – SRT-1F Available Configurations Ref. 1-6 Configuration description Standard model Space Diversity model Figure 1-5 (N+1, N=max. 7) SRT 1F Terminal Radio Equipment, Alterned Operation x x Figure 1-6 2 x (N+1, N=max. 7) SRT 1F Terminal Radio Equipment, Co-Channel Operation x x Figure 1-7 (N+1, N=max. 3) SRT 1F Double Terminal Radio Equipment, Alterned Operation (For East & West separate configuration) x x Figure 1-9 2x(N+1, N=max. 3) SRT 1F Double Terminal Radio Equipment, Alterned Operation (Repeater configuration) or Co-Channel operation x x Figure 1-12 1+0 Not Expadible Unprotected Operation Equipment x x Figure 1-13 1+1 Not Expadible Alternated Operation Equipment x x Figure 1-14 1+1 Not Expadible Co-Channel Operation Equipment x x SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Figure 1-5 shows the configuration of an (N+1) SRT 1F terminal equipment. SRT 1F Terminal Equipment Rack : ETSI Rack (N+1) Alternated Operation BRU x1 : RF Branching Network Unit Shelf RF Branching Network Circuit x1 x (Main CHs + Prot) MSTU : Main Signal Transmission Unit x (Main CHs + Prot) SCSU : Supervisory, Control, & Switching Unit Subrack x1 SV : Supervisory Unit x 1x 1 BSW : Base-Band Switch Unit TCU : Timing Control Unit HK : Housekeeping Unit (option) ECU : Embedded Communication Unit (option) x 2 max. OCC INTF x (Main CHs) x 1 ( + 1 as option) x 2 max. : Occasional traffic Interface Unit (option) x 1 BBIU BBC : Base-Band Control Unit OPT INTF : Optical Interface Unit x1 x (Main CHs) For usage of MSP x (2 Main CHs) MSP SW : Multiplex Section Protection SW Unit for OPT INTF x (Main CHs) Figure 1-5 - (N+1, N = max. 7) SRT 1F Terminal Radio Equipment, Alternated Operation SRT 1F 911-362/02C0000 Issue 3, May 2004 1-7 1. GENERAL DESCRIPTION UMN Figure 1-6 shows the configuration of an SRT 1F terminal radio equipment operating in the 2×(N+1) co-channel operation mode. One rack is used for vertical polarization, another for horizontal polarization. SRT 1F Terminal Equipment Rack : ETSI Rack (N+1) Co-Channel Operation BRU x2 : RF Branching Network Unit Shelf x2 RF Branching Network Circuit x (Main CHs + Prot) x 2 MSTU : Main Signal Transmission Unit x (Main CHs + Prot) x 2 SCSU : Supervisory, Control, & Switching Unit x 2 SV : Supervisory Unit x 1x 1 BSW : Base-Band Switch Unit TCU : Timing Control Unit BSW INTF BBIU x (Main CHs) x 1 ( + 1 as option) : BSW Interface x 1 for RPS Group 2 HK : Housekeeping Unit x 2 max. ECU : Embedded Communication Unit(option) x 2 max. OCC INTF : Occasional traffic Interface Unit(option) x 2 max. : Base-Band Interface Unit (option) x 2 BBC : Base-Band Control Unit OPT INTF : Optical Interface Unit x2 x (Main CHs) For usage of MSP x (2 Main CHs) MSP SW : Multiplex Section Protection SW Unit for OPT INTF x (Main CHs) Figure 1-6 - 2 x (N+1, N = max. 7) SRT 1F Terminal Radio Equipment, Co-Channel Operation 1-8 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Figure 1-7 shows the configuration of SRT 1F Double Terminal equipment, operating in (N+1) alternated operation for example ( East & West separate configuration) see Figure 1-8. Maximum number of N is 3. A single rack is used for east side or west side as a terminal station. For the terminal use, users can order equipment with one side system installed (NE-A or NE-B). Ordering another NE in the blank portion at a later time is possible, e.g. route extension etc. SRT 1F Double Terminal Equipment Rack (N+1) Alternated Operation BRU : ETSI Rack x1 : RF Branching Network Unit Shelf x1 MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control, & Switching Unit : Supervisory Unit SV x (Main CHs + Prot CH) x1 x1 BSW : Base-Band Switch Unit TCU : Timing Control Unit x (Main CHs) x1 : Housekeeping Unit (option) HK x1 : Occasional traffic Interface Unit (option) OCC INTF x1 Figure 1-7 - SRT 1F Double Terminal Radio Equipment, (East & West NE’s in rack for separate configuration) (3+1) (1+1) P W1 P W1 NE-B W3 W2 P W1 W3 W2 P W1 NE-A Double Terminal East ADM West Figure 1-8 - Example of East & West application SRT 1F 911-362/02C0000 Issue 3, May 2004 1-9 1. GENERAL DESCRIPTION UMN Figure 1-9 shows the configuration of SRT 1F Double Terminal equipment for repeater use, operating in 2×(N+1) alternated or cochannel operation, Figure 1-10. shows 2×(N+1) alternated operation for repeater configuration (Maximum number of N is 3). Figure 1-11. shows 2×(N+1) co-channel operation (Maximum number of N is 3). A single rack is used for both east side and west side circuits for floor space saving. For the repeater use, it is required to order both NE-A and NE-B installed together. SRT 1F Double Terminal Equipment Rack 2x(N+1) Alternated Operation or 2x(N+1) Co-Channel Operation BRU : ETSI Rack x1 : RF Branching Network Unit Shelf x1 (Including 2 circuits of RF Branching Network) MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control, & Switching Unit SV : Supervisory Unit x (Main CHs + Prot CHs) x2 BSW : Base-Band Switch Unit TCU : Timing Control Unit HK OCC INTF x1 x (Main CHs) x2 : Housekeeping Unit (option) x2 : Occasional traffic Interface Unit (option) x2 Figure 1-9 - 2x(N+1) SRT 1F Double Terminal equipment –Alternated Opertaion / CoChannel Operation 1-10 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION (2+1) (2+1) W2 P W1 W2 NE-B P W1 W2 P W1 W2 P W1 NE-A Double Terminal Back to Back Repeater Figure 1-10 - Example of Back to Back (Repeater) application (H) 2x(2+1) Co-Channel W2 P W1 W2 Double Terminal NE-A NE-B W2 (H) P W1 (V) NE-B P W1 W2 P W1 NE-A (V) Double Terminal 2x(2+1) Co-Channel Figure 1-11 - Example of Double Terminal Co-Channel application SRT 1F 911-362/02C0000 Issue 3, May 2004 1-11 1. GENERAL DESCRIPTION UMN Assembling an SRT 1F (1+1 NOT-EXPANDIBLE) requires the selection of approriate equipment from the ordering guide. Figure 1-12 shows the configuration of an SRT 1F terminal radio equipment operating in the 1+0 unprotected. See note on 1-15 SRT 1F (1+0) Unprotected SHELF : Shelf for Non-Expandible model x 1 BRU : RF Branching Network Unit Shelf x 1 MSTU SV (including RF Band Pass Filters) : Main Signal Transmission Unit x 1 : Supervisory Unit x 1 BSW : Base-Band Switch Unit x 1 TCU : Timing Control Unit x 1 OPT CONV : Optical Interface Converter (option) x 1 OCC INTF : Occasional traffic Interface Unit(option) x 1 OPT OCC : Occasional Interface for Optics (option) x 1 PORT ADPT : RF Port Adapter (option) x 1 MOUNT KIT : Mount Kit (option) x 1 BLANC CARD : Blank Card (option) x 1 (with spare channel termination) Figure 1-12 – 1+0 N.E. Uprotected Equipment 1-12 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Figure 1-13 shows the configuration of an SRT 1F terminal radio equipment operating in the (1+1) alternated operation (Frequency Diversity). See note on page 1-15. SRT 1F (1+1) Frequency Diversity SHELF : Shelf for Non-Expandible model x 1 BRU : RF Branching Network Unit Shelf x 1 MSTU SV (including RF Band Pass Filters) : Main Signal Transmission Unit x 2 : Supervisory Unit x 1 BSW : Base-Band Switch Unit x 1 TCU : Timing Control Unit x 1 OPT CONV : Optical Interface Converter (option) x 1 OCC INTF : Occasional traffic Interface Unit(option) x 1 OPT OCC : Occasional Interface for Optics (option) x 1 PORT ADPT : RF Port Adapter (option) x 1 MOUNT KIT : Mount Kit (option) x 1 BLANC CARD : Blank Card (option) x 1 (with spare channel termination) Figure 1-13 – 1+1 N.E. Alternated Operation (Frequency Diversity) Equipment SRT 1F 911-362/02C0000 Issue 3, May 2004 1-13 1. GENERAL DESCRIPTION UMN Figure 1-14 shows the configuration of an SRT 1F terminal radio equipment operating in the (1+1) Co-Channel operation both V an H polarization is used in an equipment. See note on page 1-15 SRT 1F (1+1) Co-Channel SHELF : Shelf for Non-Expandible model x 1 BRU : RF Branching Network Unit Shelf x 1 MSTU (including RF Band Pass Filters) : Main Signal Transmission Unit x 2 (with XPIC model) SV : Supervisory Unit x 1 BSW : Base-Band Switch Unit x 1 TCU : Timing Control Unit x 1 OPT CONV : Optical Interface Converter (option) x 1 OCC INTF : Occasional traffic Interface Unit(option) x 1 OPT OCC : Occasional Interface for Optics (option) x 1 PORT ADPT : RF Port Adapter (option) x 1 MOUNT KIT : Mount Kit (option) x 1 BLANC CARD : Blank Card (option) x 1 (with spare channel termination) Figure 1-14 – 1+1 N.E. Co-Channel Operation Equipment 1-14 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Note : 1+1NE Systems consists of one shelf only. The units are the same units of the other systems unless: • OPT CONV (Occasional Interface Converter) OPT CONV is an option card exclusive designed for SRT 1F 1+1 NOT-EXPANDIBLE model that translate the STM-1 signal interface between Electrical interface and Optical interface. This card is a simple media converter without MSP function. • RPS system configuration: Number of operating RF channels OPT OCC is an option card exclusive designed for SRT 1F 1+1 NOTEXPANDIBLE model that provide an optical interface for occasional traffic. This card is a simple media converter without MSP function. SRT 1F 911-362/02C0000 Issue 3, May 2004 1-15 1. GENERAL DESCRIPTION 1.3.2 1.3.2.1 UMN BRU (Branching Network Unit) BRU for N+1 or 2x(N+1) Co-Channel - Standard Terminal To define the BRU, the following requirements must be detailed: 1.3.2.2 i) Operating frequency band ii) Assigned RF channel number and frequency iii) System configuration (1+0, 1+1, 2+1,........., 7+1) iv) Operating mode: alternated operation or co-channel operation v) With SD (Space Diversity) or without SD BRU for N+1 Double Terminal Same as SRT 1F Standard Terminal, antenna connections are phisically limited to maximum 4 ports on rack. 1.3.2.3 BRU for 1+1 Not Expandible Terminal From physical restriction, basically the SRT 1F 1+1 Not-Expandible model can equip maximum three (3) filter bodies each of wich contains a pair of two frequency channels. The available configurations are: 1.3.2.4 i) 1+1 Configuration with Regular-Pair-Channels / Single Polarization ii) 1+1 Configuration with Irregular-Pair-Channels / Single Polarization iii) 1+1 Co-Channel Configuration with T&R-Filters / Double Polarization iv) 1+1 Configuration with T&R-Filters Regular-Pair-Channels / Double Polarization v) 1+1 Configuration with T&R-Filters Irregular-Pair-Channels / Double Polarization MSTU (Main Signal Transmission Unit) To define the MSTU, the following requirements must be detailed: i) Operating frequency band ii) Assigned RF channel number and frequency iii) Operating mode: alternated operation or co-channel operation Note: SD receiver circuit is equipped as a standard circuit on the SRT 1F receiver. 1-16 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.3.2.5 SCSU (Supervisory, Control and Switching Unit) To define the SCSU, the following requirements must be detailed: 1.3.2.6 i) RPS system configuration: Number of operating RF channels ii) Operating mode: alternated operation or co-channel operation iii) Required optional unit name, such as INTF, and its quantity. iv) Sub-module of SV unit for RUC (VF, Digital interface or none) ECU, HK, TCU, OCC BBIU (Baseband Interface Unit) To define the BBIU, the following requirements must be detailed: i) RPS system configuration: Number of operating RF channels ii) Operating mode: alternated operation or co-channel operation iii) Requirement for MSP function. SRT 1F 911-362/02C0000 Issue 3, May 2004 1-17 1. GENERAL DESCRIPTION 1.4 1.4.1 UMN General Specifications General Information Table 1.2 - General Specifications Description Modulation 64 state Quadrature Amplitude Modulation with Multi Level Coded Modulation type FEC (64 QAM MLCM) for 4/5/U6/11 GHz band 128 state Quadrature Amplitude Modulation with Multi Level Coded Modulation type FEC (128 QAM MLCM) for U4/L6/7/L8/13 GHz band Capacity Alternated operation One (1) STM-1 (155.52 Mbit/s) signal per RF frequency Co-channel operation Two (2) STM-1 (155.52 Mbit/s) signal per RF frequency Auxiliary signal Wayside traffic (2.048 Mb/s) Maximum 2 channels per STM-1 by using RFCOH and SOH. alternated operation and 2 x (N+1) co-channel operation Radio User Channel (64 kb/s) Maximum 2 channels per system using RFCOH for N+1 Maximum 2 channels for N+1 alternated operation or Maximum 2 x 2 channels for 2 x (N+1) co-channel operation User Channel (SOH, 64 kb/s) One (1) channel per STM-1 using SOH Maximum N channels for N+1 alternated operation or Maximum 2N channels for 2 x (N+1) co-channel operation Repeating Method Terminal (back to back connection) Overhead Byte Access Same insertion/extraction method as for SDH fibre optic transmission system for terminal and repeater station RS Section A1, A2, C1, B1, E1, F1, D1–D3 byte MS Section B2, K1, K2, D4–D12 and E2, M1 and S1 byte. Hypothetical Reference Digital Path (HRDP) 1-18 In accordance with the latest ITU-R recommendation SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.2 Transmitter (TX) Table 1.3 - Transmitter section Description Output power +32/29 dBm±1 dB for 4-L8GHz band +29 dBm±1 dB for 11GHz band +27 dBm±1 dB for 13GHz band measured at MSTU unit output Linearity compensation Linearizer circuit is employed to maintain optimum linearity Local carrier RF band oscillation With PLL Synthesizer type, frequency pre-settable Coverage of upper or lower half of the corresponding band (quarter band for 11 and 13GHz). Local Frequency stability Within ± 10 ppm Spurious emission For unmodulated carrier measured at duplexer output < –60 dBm in the frequency range 30.0 MHz to 21.2 GHz < –30 dBm in the frequency range 21.2 GHz to 40.0 GHz IF 1st IF: 70 MHz 2nd IF: 844 MHz IF input (Test In) Signal level: –10 dBm nominal Variation: ±1 dB Impedance: Return loss: RF filter 75 ohm unbalanced > 20 dB/ 70 MHz ±13 MHz for 64 QAM > 20 dB/ 70 MHz ±11 MHz for 128 QAM Chebycheff type 3 dB bandwidth: 40 MHz for 64 QAM 30 MHz for 128 QAM ATPC Automatic transmit power control (ATPC) is standard. Power control level: 10 dB Response time: 100 ms Control initiation: Received signal threshold detection Transmitted output spectrum 64 MLCM: Figure 1-15 128 MLCM: Figure 1-16 128 MLCM: Figure 1-17 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-19 1. GENERAL DESCRIPTION UMN +1 0 14MHz +1dB -10 19.5MHz -10dB -20 -30 -40 24MHz -35dB -50 -60 -70 39.5MHz -65dB -80 -90 55MHz -95dB -100 0 5 10 15 20 25 30 35 40 45 50 55 100 RF frequency (MHz) Figure 1-15 Transmitter output spectrum (64QAM system, 40 MHz spacing) (Exclude emissions which result from the modulation process) 1-20 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION +2 0 12MHz +2dB 14.5MHz -6dB -10 -20 18MHz -32dB -30 -40 17MHz -32dB -50 22MHz -45dB -60 -70 34MHz -65dB -80 60MHz -105dB -90 32MHz -85dB 40MHz -95dB -100 -110 0 5 10 15 20 30 35 40 45 50 55 60 65 70 RF freque nc y (MHz) Figure 1-16 Transmitter output spectrum (128QAM system, 29 / 29.65 MHz spacing) (Exclude emissions which result from the modulation process) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-21 1. GENERAL DESCRIPTION UMN +1 0 13MHz +1dB -10 -20 21MHz -35dB -30 -40 20MHz -35dB -50 -60 -70 29.5MHz -65dB -80 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 RF frequency (MHz) Figure 1-17 Transmitter output spectrum (128QAM system, 28 MHz spacing) (Exclude emissions which result from the modulation process) 1-22 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.3 Receiver (RX) Table 1.4 - Receiver section Description Noise figure (Note 1) 1.5 dB typical 2.0 dB guaranteed 2.0 dB typical 2.5 dB guaranteed 2.5 dB typical 3.0 dB guaranteed 4.0 dB typical 4.5 dB guaranteed (for 4 ~ 6 GHz band) (for 4 ~ 6 GHz band (for 7 ~ 8 GHz band) (for 7 ~ 8 GHz band) (for 11 GHz band) (for 11 GHz band) (for 13 GHz band) (for 13 GHz band) Note 1: Noise figure is measured at the MSTU unit input on both the main and SD receiver, independently, and at maximum IF amplifier gain. Local carrier RF band oscillation with PLL Synthesizer type, frequency pre-settable Half band coverage on lower or upper half of the corresponding band (quarter band for 11 and 13 GHz band). Spurious emission For unmodulated carrier measured at duplexer output < –60 dBm in the frequency range 30.0 MHz to 21.2 GHz < –30 dBm in the frequency range 21.2 GHz to 40.0 GHz Local Frequency stability Within ±10 ppm (11 GHz) Image rejection More than 100 dB with RX BPF measured at the MSTU output when the image and main signal levels are equal, and with unmodulated carrier. Normal received power –32 to –55 dBm Received input range Maximum level: –17 dBm Minimum level: –74.5 dBm for 64QAM –72.0 dBm for 128QAM (for BER at 1 x 10 –3 ) AGC dynamic range –17 to –77 dBm measured at MSTU input IF 1st IF: 70MHz 2nd IF: 844MHz IF output (70 MHz) (Test Out) Signal level: –10 dBm nominal, +l dB/–2 dB variation for –17 to –77 dBm modulated RX input Impedance : 75 ohm unbalanced Return loss : > 20 dB/ 70 MHz ±13 MHz for 64 QAM ±11 MHz for 128 QAM Measured at the MSTU unit monitoring point. RF filter Chebycheff type 3 dB bandwidth: IF filter 40 MHz for 64 QAM 30 MHz for 128 QAM Butterworth type 3 dB bandwidth 40 MHz SRT 1F 911-362/02C0000 Issue 3, May 2004 1-23 1. GENERAL DESCRIPTION 1.4.4 UMN Modulator (MOD) Table 1.5 - Modulation Description Modulation Spectrum shaping Local carrier Local frequency stability IF 1.4.5 For 40 MHz Channel spacing: 64-state Quadrature Amplitude Modulation with Multi-Level Coded Modulation type FEC (64 QAM MLCM) For 28/29/29.65/30 MHz Channel spacing: 128-state Quadrature Amplitude Modulation with Multi-Level Coded Modulation type FEC (128 QAM MLCM) 35 % raised cosine roll-off factor for 64 QAM MLCM or 25 % raised cosine roll-off factor for 128 QAM MLCM Spectrum shaping is root Nyquist distribution. Crystal oscillator (XO) Within ± 15 ppm 70 MHz Demodulator (DEM) Table 1.6 - Demodulation Description Demodulation Spectrum shaping IF Adaptive equalizer in baseband Adaptive equalizer in IF 1-24 Coherent detection/instantaneous decision 35 % raised cosine roll-off factor for 64 QAM MLCM or 25 % raised cosine roll-off factor for 128 QAM MLCM Spectrum shaping is root Nyquist distribution. 70 MHz 10-tap linear transversal equalizer (TVE) and 10-tap decision feedback equalizer (DFE) Slope equalizer SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.6 Digital Processing Table 1.7 - Digital Processing Description SDH Electrical interface CMI-to-unipolar conversion Unipolar-to-CMI conversion Frame synchronization to STM-1 frame Section Adaptation (change the pointer) Scrambler/descrambler Addition/drop of section Overhead bit (1) Framing bit (A1, A2) (2) Regenerator section party (B1) (3) Network management for regenerator section (D1 to D3) (4) Regenerator section orderwire (E1) (5) User channel (F1) (6) Multiplex section Parity (B2) (7) Network management for multiplex section (D4 to D12) (8) Multiplex section orderwire (E2) (9) AIS, FERF (K1, K2) (10) Section trace (J0) (11) Far End Block Error (M1) (12) Synchronization status byte (S1) SDH optical interface Optical-to-electrical conversion Electrical-to-optical conversion Frame synchronization to STM-1 frame Section Adaptation (change the pointer) Scrambler/descrambler Addition/drop of section Overhead byte (1) Framing bit (A1, A2) (2) Regenerator section parity (B1) (3) Network management for regenerator section (D1 to D3) (4) Regenerator section orderwire (E1) (5) User channel (F1) (6) Multiplex section Parity (B2) (7) Network management for multiplex section (D4 to D12) (8) Multiplex section orderwire (E2) (9) MSP CONT (K1, K2) (10) Section trace (J0) (11) Far End Block Error (M1) (12) Synchronization status byte (S1) FERF = Far End Receive Failure MSP = Multiplex Section Protection SRT 1F 911-362/02C0000 Issue 3, May 2004 1-25 1. GENERAL DESCRIPTION UMN Table 1.6 - Digital Processing (continued) Description For Radio SDH frame to Radio frame conversion Radio frame complementary Overhead (RFCOH) insertion and detection (1) Route ID (2) Radio protection switch (RPS) initiator (3) Digital service channel (4) RPS control signal (5) Far end control signal (6) Way side traffic (7) ATPC Control signal Scrambling 215–1 patterns Route ID 16 addresses pre-settable ATPC = Automatic Transmit Power Control 1-26 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.7 Overall Table 1.8 – Overall Description Up-fade BER BER = 10–3 at RSL of –17 dBm measured at MSTU input Down-fade BER For 64 QAM MLCM (Figure 1-18): BER = 10–3 at RSL of –76.5 dBm typical BER = 10–3 at RSL of –74.5 dBm guaranteed BER = 10–6 at RSL of –73.5 dBm typical BER = 10–6 at RSL of –70.5 dBm guaranteed Measured at MSTU input For 128 QAM MLCM (Figure 1-19): BER = 10–3 at RSL of –74.0 dBm typical BER = 10–3 at RSL of –72.0 dBm guaranteed BER = 10–6 at RSL of –71.0 dBm typical BER = 10–6 at RSL of –68.0 dBm guaranteed Measured at MSTU input Note 1 : Space Diversity improves RSL by 2 dB. Note 2 : RSL is 1.0 dB higher for 11 GHz and 2.5 dB higher for 13 GHz. Note 3 : Down-fade BER at point B is as follows. 64QAM Figure 1-20 128QAM CC Figure 1-21 128QAM AP (7/13GHz) Figure 1-22 Residual BER BER < Typical:10–13 /hop/day at normal receiving condition Guaranteed:10–12 /hop/day at normal receiving condition RSL = Receive Signal Level SRT 1F 911-362/02C0000 Issue 3, May 2004 1-27 1. GENERAL DESCRIPTION UMN BER=10-3 at RSL=-74.5 dBm (Guaranteed) -3 10 -76.5 dBm Typical curve BER -73.5 dBm BER=10-6 at RSL=-70.5 dBm (Guaranteed) -6 10 -78 76 74 -72 -70 -68 [dBm] Receive Signal Level (RSL) at point A (MSTU input) Figure 1-18 BER vs RSL (64 QAM system) (Down-fade) 1-28 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION BER=10-3 at RSL=-72 dBm (Guaranteed) 10-3 -74.0 dBm Typical curve BER -71.0 dBm -6 BER=10 at RSL=-68 dBm (Guaranteed) 10-6 -76 -74 -72 -70 -68 -66 [dBm] Receive Signal Level (RSL) at point A (MSTU input) Figure 1-19 BER vs RSL (128 QAM system) (Down-fade) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-29 1. GENERAL DESCRIPTION UMN 10 -2 RSL - BER Mask at point B (64QAM CC) 11G 10 -3 U6G 5G 10 -4 at A 4G 10 -5 10 -6 ETSI 10 -7 10 -8 ETSI 11G 10 -9 10 -10 10 -11 -80 10 11 12 13 14 -70 15 16 RSL (dBm) 17 18 19 -60 20 Receive Signal Level (RSL) at point B Figure 1-20 BER vs RSL (64 QAM system) (Down-fade) 1-30 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 10 -2 RSL - BER Mask at point B (128QAM CC) 10 -3 U4G 10 -4 L6G L8G 10 -5 at A 10 -6 ETSI 10 -7 10 -8 10 -9 10 -10 10 -11 -80 10 11 12 13 14 -70 15 16 RSL (dBm) 17 18 19 -60 20 Receive Signal Level (RSL) at point B Figure 1-21 BER vs RSL (128 QAM system) (Down-fade) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-31 1. GENERAL DESCRIPTION UMN 10 -2 RSL - BER Mask at point B (128QAM AP) 10 -3 L7G 10 -4 U7G 13G 10 -5 10 -6 at A ETSI 10 -7 ETSI 13G 10 -8 10 -9 10 -10 10 -11 -80 10 11 12 13 14 -70 15 16 RSL (dBm) 17 18 19 -60 20 Receive Signal Level (RSL) at point B Figure 1-22 BER vs RSL (128 QAM system) (Down-fade) 1-32 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.8 RF Interference Table 1.9 - RF Interference Description Co-channel BER = 10–3 at C/I = 22 dB for 64 QAM MLCM and 25 dB for 128 QAM MLCM measured at duplexer input and RSL of –50 dBm Adjacent channel BER = 10–3 at C/I = 33 dB for 64 QAM MLCM and 30 dB for 128 QAM MLCM measured at duplexer input and RSL of –50 dBm Innermost channel C/N degradation at BER = 10–3 : < 1 dB measured at duplexer input and Inter-Port Isolation (IPI) of 40 dB XPIC Improvement factor using XPIC for co-channel operation = 18 dB measured at BER = 10–3 interference curve The following is the RF waveguide interface to/from the antenna system; Frequency band Flange (IEC standard) 4 GHz band UDR 40 5 GHz band UDR 48 L6 GHz band UDR 70 7 GHz UDR 70 U6 GHz band UDR 70 L8 GHz band UDR 84 11 GHz band UDR 100 13 GHz band UDR 120 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-33 1. GENERAL DESCRIPTION 1.4.9 UMN Countermeasures to Fading Table 1.10 - Countermeasures to Fading Description SD In Phase combiner in IF stage LO endless phase shifter SD DADE Method Two types are available; Compensation with RF feeder length (equivalent to 25 m), or Compensation with delay adjuster at IF (equivalent to 120 ns). SD DADE is adjusted through the delay line on the MSTU unit. Adaptive Equalizer Adaptive time domain equalizer in baseband 20 tap full digital type (a) 10-tap transversal equalizer (TVE) (b) 10-tap decision feedback equalizer (DFE) Adaptive frequency domain equalizer in IF (a) Slope equalizer (SLP EQL) XPIC Cross Polarization Interference Canceller (XPIC) is inside the Demodulator module (optionally configure for co-channel operation only) FEC Multi-Level Coded Modulation(MLCM) Coding gain for 64QAM MLCM: 2.0 dB at BER=10–3 3.5 dB at BER=10–6 Coding gain for 128QAM MLCM: 2.0 dB at BER=10–3 3.7 dB at BER=10–6 ATPC 1-34 ATPC range: 10 dB Control speed: 100 dB/sec SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.10 1.4.10.1 Signal Interface for STM-1 System Base Band Signal Interface The Base Band Signal interface is in accordance with ITU-T G.957 and G.703 Recs. 1.4.10.2 Base Band for Optical STM-1 Interface Table 1.11 - Base Band for Optical STM-1 Interface (OPT INTF unit) Bit Rate SDH level 1 Unit Name OPT INTF 1 OPT INTF 2 Application code (ITU-T G.957) (S-1.1) (L-1.1) Typical hop 0-15 Km 15-40 Km Operation wavelength range (nm) 1260-1360 1280-1335 Transmitter at reference point S: Source type * MLM MLM Spectral characteristics: Maximum RMS width (nm) 7.7 4.0 Mean launched power: Maximum(dBm) Minimum (dBm) –8 –15 0 –5 Mi Bit rate minimum extinction ratio (dB) 8.2 10 Optical path between S & R: Attenuation range (dB) Maximum dispersion (ps/nm) 0–12 96 10–28 N/A Optical path between S and R: Attenuation range 0-12 10-28 Maximum dispersion (ps/nm) 96 186 Minimum optical return loss of cable point at S, including and connectors (dB) NA NA Maximum discrete reflectance between S and R NA NA Minimum sensitivity (dBm) –28 –34 Minimum overload –8 –10 Maximum optical path penalty (including chirp penalty and dispersion penalty (dB) 1 1 Maximum reflectance of receiver, measured at R (dB) NA NA Connector Used SC type or FC type 155.52 Mbit/s ± 20 ppm Maximum –20 dB width (nm) Minimum side mode suppression ratio (dB) Receiving at reference point R * Note : MLM = Multi-Longitudinal Mode SLM = Single-Longitudinal Mode SRT 1F 911-362/02C0000 Issue 3, May 2004 1-35 1. GENERAL DESCRIPTION 1.4.10.3 UMN Base Band for Electrical STM-1 Interface Table 1.12 - Base Band for Electrical STM-1 Interface (BSW unit) Bit rate 155.52 Mbit/s ± 20 ppm Code format Coded Mark Inversion (CMI) Pulse mask In accordance with ITU-T Rec. G.703 Impedance 75-ohm nominal, unbalanced Return loss > 15 dB / 8~240 MHz, measured at base band input port Input cable length The attenuation of the coaxial cable pair should be assumed to follow an approximately root √f law and to have a maximum insertion loss of 12.7 dB at a frequency of 78 MHz. Coaxial cable 2.5C-2V or equivalent Connector used 27CP coaxial connector. 1.4.10.4 Jitter Jitter tolerance The SRT 1F radio equipment tolerates the input jitter applied according to ITU-T Rec. G.958 with Type A specified on Table 2. Jitter transfer The SRT 1F radio equipment meets the jitter transfer specification given in ITU-T Rec. G.958 Figure 6.2 with the jitter transfer parameter specified for Type B in Table 1/G.958 when sinusoidal jitter up to the mask level in Figure 6.3/G.958 with the jitter tolerance parameter specified for Type A in Table 2/G.958 is applied at the STM-1 input. 1.4.10.5 Alarm Indication Signal (AIS) Terminal When the Base Band signal (optical/electrical) or radio signal from the optical equipment or radio equipment is lost, the SRT 1F generates a AU- AIS (MS mode) the next equipment When the AU-AIS is detected from Base Band or radio signal, the SRT 1F transfer the AU-AIS to the next equipment after SOH processing. When MS-AIS is detected from Base Band or radio signal and transfers AU-AIS to the next equipment after RSOH and MSOH processing (in case of MS operation). 1-36 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.4.10.6 BSI Transmission Transparent transmission (BSI transmission). The property of a binary transmission channel, telecommunication circuit or connection, that permits all sequences of binary signal elements to be conveyed over it at its specified bit rate, without change to the value of any signal elements. 1.4.11 Auxiliary Signal Interface 1.4.11.1 Radio User Channel (RUC) Table 1.13 - Auxiliary Signal Interface (RUC) Transmission - Bit insertion/separation to/from RFCOH bits Bit rate 64 kbit/s x 2 (equivalent to 2 CH telephony) per system Interface Combination of VF and 64 kbit/s available by mounting optional sub-PCB module on the SV units. VF interface Input level : –16 dBr nominal (–16 to-0.5 dBr, 0.5 step) Output level: +7 dBr nominal (–8.5 to +7 dBr, 0.5 step) Voice maximum level: 3 dBmo No. of CH Maximum 2 CH Amplitude response: In accordance with ITU-T G.712 Signal-to-distortion: In accordance with ITU-T G.712 Impedance 600-Ω balanced Digital interface Interface: Co-directional or contra-directional Connector used Multi-pin connector 1.4.11.2 Way Side (WS) Table 1.14 - Auxiliary Signal Interface (WS) Capacity 2048 kbit/s x 2 per STM-1 Transmission Bit insertion/separation to/from RFCOH and/or SOH bits One wayside traffic is transferred through RFCOH bits, the other is through undefined bytes in SOH Digital interface In accordance with ITU-T G.703 Rec. Connector used Multi-pin connector for 120 Ω balanced Coaxial connector, 27CP for 75 Ω unbalanced SRT 1F 911-362/02C0000 Issue 3, May 2004 1-37 1. GENERAL DESCRIPTION 1.4.11.3 UMN Order Wire (OW) Table 1.15 - Auxiliary Signal Interface (OW) Transmission Bit insertion/separation to/from E1 and E2 of SOH. Bit rate 64 kbit/s x 2 (equivalent to 2 CH telephony) Express orderwire and omnibus orderwire Interface 2-W for internal telephone set and external use 4-W for branching connector Interface level 2W Interface Input level : 0.0 dBr nominal Output level : –2.0 dBr nominal Voice maximum level: 3 dBmo 4W Interface Input level : –4 dBr nominal (–16 to –0.5 dBr, 0.5 step) Output level : –4 dBr nominal (–8.5 to +7 dBr, 0.5 step) Voice maximum level: 1.4.11.4 3 dBmo User Channel (UC) Table 1.16 - Auxiliary Signal Interface (User Channel) Transmission Bit insertion/separation to/from F1 byte of SOH. Bit rate 64 kbit/s x 1 (equivalent to 1 CH telephony) per STM-1 Interface 64 kbit/s Interface Interface : Co-directional or contra directional Pulse mask: In accordance with ITU-T G.703 Connector used 1-38 Multi-pin connector SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5 1.5.1 Mechanical Specification General Rack has dimension as follows: • 2200 mm height • 600 mm width • 300 mm depth The following Table lists the SRT 1F configurations inside the ETSI rack and the references to the relevant front layout. Table 1.17 – SRT-1F Equipment configuration layout Ref. Configuration layout Figure 1-23 (N+1, N=max. 7) SRT 1F Terminal Radio Equipment, Alterned operation Figure 1-24 2 x (N+1, N=max. 7) SRT 1F Terminal Radio Equipment, Co-channel operation Figure 1-25 2x(N+1, N=max. 3) SRT 1F Double Terminal Radio Equipment Figure 1-26 1+1 Not Expadible Terminal Radio Equipment (with one system) Figure 1-27 1+1 Not Expadible Terminal Radio Equipment (with two systems) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-39 1. GENERAL DESCRIPTION UMN 342.5*1 300 600 BRU RF Branching Network Unit Main Signal Transmission Unit SCSU Supervisory, Control & Switching Unit BBIU Base-Band Interface Unit (option) 2200 MSTU 1 * The dimensions include all protruding parts Figure 1-23 - Front view of (7+1) SRT 1F radio equipment 1-40 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 342.5*1 600 300 BRU RF Branching Network Unit MSTU Main Signal Transmission Unit 2200 600 SCSU BBIU Supervisory, Control & Switching Unit Base-Band Interface Unit (option) 1 * The dimensions include all protruding parts Figure 1-24 - Front view of 2x(7+1) Co-Channel SRT 1F radio equipment SRT 1F 911-362/02C0000 Issue 3, May 2004 1-41 1. GENERAL DESCRIPTION UMN 342.5*1 300 600 BRU RF Branching Network Unit Main Signal Transmission Unit SCSU Supervisory, Control & Switching Unit 2200 MSTU *1 The dimensions include all protruding parts Figure 1-25 - Front view of 2x(3+1) Double Terminal SRT 1F radio equipment 1-42 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 355*1 300 600 25 Cover 2200 1+1 NOT-EXPANDIBLE ASSEMBLY *1 The dimensions include all protruding parts Figure 1-26 - Front view of 1+1 NOT EXPANDIBLE SRT 1F radio equipment (1 SYSTEM) SRT 1F 911-362/02C0000 Issue 3, May 2004 1-43 1. GENERAL DESCRIPTION UMN 355*1 300 600 25 Cover 1+1 NOT-EXPANDIBLE ASSEMBLY 2200 ( 1st Sytem) 1+1 NOT-EXPANDIBLE ASSEMBLY ( 2nd System) *1 The dimensions include all protruding parts Figure 1-27 - Front view of 1+1 NOT EXPANDIBLE SRT 1F radio equipment (2 SYSTEMS) 1-44 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5.2 1.5.2.1 Rack construction 7+1 , 2x(7+1)CC, 3+1DT rack construction It consists of: • Rack • RF Branching network part (BRU block) • Shelves with PCB backplane (MSTU/SCSU blocks) • Optional shelf with PCB backplane (BBIU blocks) • Slide-in-units (SIU) The following connectors and power supply terminals are on the PCB backplane: • Multi-pin and co-axial connectors for data • Multi-pin connectors for alarm and status output for housekeeping bits • Power supply terminal from power supply system. The shelves comprise the main signal transmission unit (MSTU), supervisory control and switching unit (SCSU), baseband interface unit (BBIU) and RF branching network unit (BRU). A multi-layer PCB backplane is used for plug-in units. Multi-pin connectors on the backplane have high-reliability features and are provided with facilities which prevent wrong insertion. The BBIU shelf is used only for terminal configuration with optical interface (in N+1 DT configuration is not applicable). The RF branching network is housed above the MSTU shelf. The RF branching network consists of RF band pass filters and, circulators for channel separation. The RF branching network and the MSTU units are connected through semi-rigid coaxial cables with SMA coaxial connectors via an MSTU adapter. All units are of the plug-in type hence needing no wiring during the installation and maintenance works. Units have card-pullers for easy card extraction and unit locking. All units can be accessed through front panel. SRT 1F 911-362/02C0000 Issue 3, May 2004 1-45 1. GENERAL DESCRIPTION 1.5.2.2 UMN 1+1 Not Expandible rack construction • Rack • One or Two 1+1 NE SRT1F Shelf. The following connectors and power supply terminals are on the PCB backplane: • Multi-pin and co-axial connectors for data • Multi-pin connectors for alarm and status output for housekeeping bits • Power supply terminal from power supply system. The shef comprise the main signal transmission unit (MSTU), supervisory control, switching unit and RF branching network unit (BRU). A multi-layer PCB backplane is used for plug-in units. Multi-pin connectors on the backplane have high-reliability features and are provided with facilities which prevent wrong insertion. The RF branching network is housed above the The RF branching network consists of RF band pass filters and, shelf. All units are of the plug-in type hence needing no wiring during the installation and maintenance works. Units have card-pullers for easy card extraction and unit locking. All units can be accessed through front panel. 1.5.3 Inter-Rack Connections Inter-rack cabling and connections are made on the PCB backplane through multi-pin connectors. 1-46 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5.4 1.5.4.1 Rack Layout N+1 / 2x(N+1)CC TERMINAL Typical rack configurations for terminal and repeater stations are shown in Figure 1-28 and Figure 1-29. The terminal equipment has the following facilities; • One BRU • Maximum eight (8) MSTUs (8 RF system) per rack • One SCSU • One optional BBIU for STM-1 Optical interface The repeater equipment (one-end) has the following facilities; • One BRU • Maximum eight (8) MSTUs (8 RF system) per rack • One SCSU Vertical (V) and Horizontal (H) polarization BRU MSTU SCSU BBIU Figure 1-28 - (7+1) Alternated Operation Terminal Station SRT 1F 911-362/02C0000 Issue 3, May 2004 1-47 1. GENERAL DESCRIPTION UMN A co-channel operating terminal station (up to 1+7 system) consists of two (2) equipment racks of opposite polarization as shown in Figure 1-29. V-polarization H-polarization BRU MSTU SCSU BBIU Figure 1-29 - 2 x (7+1) Co-Channel Operating Terminal Station 1-48 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5.4.2 N+1 DOUBLE TERMINAL Typical rack configurations for double terminal stations are shown in Figure 1-30. The Double Terminal equipment has the following facilities; • One BRU • Maximum eight (8) MSTUs (8 RF system) per rack • One SCSU Vertical (V) and Horizontal (H) polarization BRU MSTU SCSU Figure 1-30 - (3+1) Double Terminal Station SRT 1F 911-362/02C0000 Issue 3, May 2004 1-49 1. GENERAL DESCRIPTION 1.5.4.3 UMN 1+1 NOT EXPANDIBLE TERMINAL In a rack can be installed up to two 1+1 N.E. systems. The 1+1 NE equipment has the following facilities. • One shelf with all the units • Maximum two (2) MSTUs (RF system) 1 SYSTEM 2 SYSTEMS Figure 1-31 - (1+1) Not Espandible Terminal Station 1-50 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5.5 1.5.5.1 Unit Layout MSTU shelf Figure 1-32 shows the unit layout on the MSTU shelf. Maximum eight (8) MSTU units can be mounted in one MSTU. Figure 1-32 - Front view of the MSTU shelf SRT 1F 911-362/02C0000 Issue 3, May 2004 1-51 1. GENERAL DESCRIPTION 1.5.5.2 UMN SCSU shelf Figure 1-33 shows the unit layout on the SCSU. One block can accomodate, one SV unit, one TCU unit, and maximum seven (7) BSW units. In addition to the above units, one back-up TCU unit, two HK units, one OCC INTF unit, and two ECU units can be optionally mounted. RPS Group 1 RPS Group 2 Figure 1-33 - Front view of the SCSU shelf (Terminal Station configuration) Figure 1-34 shows the unit layout on the SCSU. Two blocks can be accomodated, one TCU unit, and maximum three (3) BSW units. B S W 1 T C U B S W 2 U K B S W 3 O C C I N T F S V B S W 1 B S W 2 T C U U K SYSTEM "A" B S W 3 S V O C C I N T F SYSTEM "B" Figure 1-34 - Front view of the SCSU shelf (Double Terminal configuration) 1-52 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.5.5.3 BBIU shelf Figure 1-35 shows the unit layout on the BBIU for STM-1 optical interface. One block can accomodate, a maximum of fifteen (15) OPT INTF units, seven (7) MSP SW units, and one BBC unit. Figure 1-35 - Front view of the STM-1 optical interface BBIU shelf SRT 1F 911-362/02C0000 Issue 3, May 2004 1-53 1. GENERAL DESCRIPTION 1.5.5.4 UMN 1+1 N.E. shelf Figure 1-36 shows the unit layout of SRT-1F 1+1 NE assembly. In the shelf are installed 2 MSTC units and the following units: • SV • BSW • OPTICAL CONVERTER • OCC INTERFACE • TCU Figure 1-36 - Front view of the 1+1 NE assembly 1-54 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.6 Environmental Specification Temperature and Humidity Performance guaranteed within the solid line below Temperature (°C) 45 35 10 0 0 10 20 30 40 50 60 70 80 90 95 Relative Humidity (%) Short term operation –5 to 50ºC Note : Short term is defined as a period not exceeding 72 consecutive hours or a total of 15 days per year. In this case equipment is operable, but performance is not guaranteed Storage/shipping Temperature: –20ºC to +55ºC, Humidity: 0% to 95% (@35ºC) Altitude Performance guaranteed Up to 3,500 meters Storage/shipping Up to 15,000 meters Vibration In accordance with ETSI Electro-Magnetic Compatibility Electrostatic IEC 801-2 discharge Level 3 (4 kV direct discharge) without any malfunction Radiated emission Level 4 (8 kV direct discharge) with some degraded performance, but without damage In accordance with CISPR Pub.22 CLASS A, 10m method < 39.5 dB µV/m for 30.0 to 230.0 MHz < 46.5 dB µV/m for 230.0 to 1000.0 MHz Conducted emission In accordance with CISPR Pub.22 CLASS A < 66 dB µV/m for 0.15 to 0.5 MHz (average energy) < 60 dB µV/m for 0.5 to 30.0 MHz (average energy) Radiated susceptibility In accordance with IEC 801-3 3 V/m, swept 80 MHz to 1 GHz without any malfunction SRT 1F 911-362/02C0000 Issue 3, May 2004 1-55 1. GENERAL DESCRIPTION 1.7 UMN Power Requirements 1.7.1 General All the equipment is DC power supplied with positive ground. DC input voltage, –48V (–36 V to –72 V) is available. The power supply circuits of all the equipment provide the following: • Over current protection (Secondary) • Over voltage protection (Secondary) • Surge protection (Primary) : • Rise and fall time (Vp/2) : tr = 1.2 µ sec, tf = 50 µ sec. Vp = 2 kV A power supply switch with non-fuse breaker is located on each MSTU, SCSU, and BBIU. 1.7.2 Unit Power Consumption The power consumption of each unit is shows in Table 1.18 Table 1.18 - Power Consumption of each unit No. Unit (W) Remarks 1 MSTU without XPIC 4-8 GHz 170 + 32 dBm output without SD 2 MSTU with XPIC 4-8 GHz 175 + 32 dBm output with SD 3 MSTU without XPIC 4-8 GHz 130 + 29 dBm output without SD 4 MSTU with XPIC 135 + 29 dBm output with SD 5 MSTU without XPIC 11-13GHz 155 6 MSTU with XPIC 11 GHz 160 7 SV 20 8 TCU 12 9 BSW 2/9* secondary +5V from MSTU-P 10 BSW INTF 2 secondary +5V from MSTU-P 11 HK (optional unit) 5 secondary +5V from SV 12 ECU (optional unit) 6 secondary +5V from SV 13 OPT INTF (optional unit) 24 14 BBC (optional unit) 5 15 MSP SW (optional unit) 0.5 4-8 GHz 1 secondary +5V from OPT INTF Note1: Under working of protection channel. Note: Unit power consumption includes efficiency of power supply module. (80 %) 1-56 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.7.3 Overall Consumption 1.7.3.1 N+1 /2x(N+1)Terminal The equipment consumption is shown in Table 1.19. Table 1.19 - Power Consumption of N+1 /2x(N+1)Terminal Equipment NOTE STM-1 STM-1 Electrical Interface Optical Interface (W) (W) (1+1) Terminal 380 435 (3+1) Terminal 720 880 (7+1) Terminal 1400 1765 2x (1+1) Terminal 750 850 2x (3+1) Terminal 1440 1760 2x (7+1) Terminal 2840 3575 Equipment 1.7.3.2 + 32 dBm output with SD,without other option 2x(N+1)Double Terminal The equipment consumption is shown in Table 1.20. Table 1.20 - Power Consumption of Double Terminal Equipment Equipment NOTE STM-1 Electrical Interface (W) (1+1) Terminal side A or B 380 (3+1) Terminal side A or B 720 2x (1+1) Double Terminal 750 2x (3+1) Double Terminal 1440 1.7.3.3 + 32 dBm output with SD,without other option 1+1 N.E. Shelf The equipment consumption is shown in Table 1.21. Table 1.21 - Power Consumption of 1+1 N.E Equipment STM-1 STM-1 Electrical Interface Optical Interface (W) (W) (1+0) Terminal 159 162 (1+1) Terminal 329 335 (1+0) Terminal 199 202 (1+1) Terminal 369 373 Equipment SRT 1F 911-362/02C0000 Issue 3, May 2004 NOTE +29 dBm output with SD,without other option + 32 dBm output with SD,without other option 1-57 1. GENERAL DESCRIPTION 1.8 1.8.1 UMN Frequency Plan and Antenna System General Information Table 1.22 shows the ITU-R recommendations for the radio frequency plan. Table 1.22 - ITU-R Recommendations. Band Recommendation U4 GHz band ITU-R Recommendation F.382-6 4 GHz band ITU-R Recommendation F.635-3 5 GHz band ITU-R Recommendation F.1099 Annex-1 L6 GHz band ITU-R Recommendation F.383-5 U6 GHz band ITU-R Recommendation F.384-5 L7 GHz band ITU-R Recommendation F.385-6 U7 GHz band ITU-R Recommendation F.385-6 L8 GHz band ITU-R Recommendation F.386-4 11 GHz band ITU-R Recommendation F.387-6, ITU-R Recommendation F.387-6 Annex 2 13 GHz band ITU-R Recommendation F.497-4 1.8.2 Frequency Plan The frequency allocation for the Upper 4 GHz band is as follows: 1-58 • 3803.5 to 4203.5 MHz • Center frequency 4003.5 MHz • Guard band 21 MHz (Lower band and upper band) • Center gap 68 MHz • 29 MHz frequency spacing (co-channel operation) 58 MHz frequency spacing (alternated operation) • 213 MHz transmit-receive frequency spacing • 5+1 protection system for alternated operation 2×(5+1) protection system for co-channel operation • Specified RF frequency shown in Figure 1-37. SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION The frequency allocation for the 4 GHz band is as follows: • 3600 to 4200 MHz • Center frequency 3900 MHz • Guard band 20 MHz (Lower band and upper band) • Center gap 80 MHz • 40 MHz frequency spacing (co-channel operation) 80 MHz frequency spacing (alternated operation) • 320 MHz transmit-receive frequency spacing • 6+1 protection system for alternated operation 2×(6+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-38 The frequency allocation for the 5 GHz band is as follows: • 4400 to 5000 MHz • Center frequency 4700 MHz • Guard band 30 MHz (Lower band and upper band) • Center gap 60 MHz • 40 MHz frequency spacing (co-channel operation) 80 MHz frequency spacing (alternated operation) • 300 MHz transmit-receive frequency spacing • 6+1 protection system for alternated operation 2×(6+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-39 The frequency allocation for the Lower 6 GHz band is as follows: • 5925 to 6425 MHz • Center frequency 6175 MHz • Guard band 20.2 MHz (Lower band) and 20.21 MHz (Upper band) • Center gap 44.49 MHz • 29.65 MHz frequency spacing (co-channel operation) 59.30 MHz frequency spacing (alternated operation) • 252.04 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation 2×(7+1)protection system for co-channel operation • Specified RF frequency, shown in Figure 1-40 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-59 1. GENERAL DESCRIPTION UMN The frequency allocation for the Upper 6 GHz band is as follows: • 6430 to 7110 MHz • Center frequency 6770 MHz • Guard band 30 MHz (Lower band and upper band) • Center gap 60 MHz • 40 MHz frequency spacing (co-channel operation) 80 MHz frequency spacing (alternated operation) • 340 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation 2×(7+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-41 The frequency allocation for the Lower 7 GHz band is as follows: • 7125 to 7425 MHz • Center frequency 7275 MHz • Guard band 10 MHz (Lower band) and 17 MHz (Upper band) • Center gap 49 MHz • 56 MHz frequency spacing (alternated operation) • 161 MHz transmit-receive frequency spacing • 4+1 protection system for alternated operation • Specified RF frequency, shown in Figure 1-42 The frequency allocation for the Upper 7 GHz band is as follows: 1-60 • 7425 to 7725 MHz • Center frequency 7575 MHz • Guard band 17 MHz (Lower band and upper band) • Center gap 42 MHz • 56 MHz frequency spacing (alternated operation) • 154 MHz transmit-receive frequency spacing • 4+1 protection system for alternated operation • Specified RF frequency, shown in Figure 1-43 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION The frequency allocation for the Lower 8 GHz band is as follows: • 7725 to 8275 MHz • Center frequency 8000 MHz • Guard band • Center gap 103.77 MHz • 29.65 MHz frequency spacing (co-channel operation) 59.30 MHz frequency spacing (alternated operation) • 311.32 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation 2×(7+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-44 The frequency allocation for the 11 GHz band is as follows: • 10700 to 11700 MHz • Center frequency 11200 MHz • Guard band 15 MHz for 12 pair system • Center gap 90 MHz for 12 pair system • 40 MHz frequency spacing (co-channel operation) 80 MHz frequency spacing (alternated operation) • 530 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation 2×(7+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-45 The frequency allocation for the 11 GHz band Annex 2 is as follows; • 10700 to 11700 MHz • Center frequency 11200 MHz • Guard band 35 MHz for 12 pair system • Center gap 50 MHz for 12 pair system • 40 MHz frequency spacing (co-channel operation) 80 MHz frequency spacing (alternated operation) • 490 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation 2×(7+1) protection system for co-channel operation • Specified RF frequency, shown in Figure 1-45 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-61 1. GENERAL DESCRIPTION UMN The frequency allocation for the 13 GHz band is as follows: 1-62 • 12750 to 13250 MHz • Center frequency 12996 MHz • Guard band 15 MHz (Lower band) and 23 MHz (Upper band) • Center gap 70 MHz • 56 MHz frequency spacing (alternated operation) • 266 MHz transmit-receive frequency spacing • 7+1 protection system for alternated operation • Specified RF frequency, shown in Figure 1-47. SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.1 U4 GHz Band Frequency Allocation (ITU-R F.382-6) Alternated operation 400 MHz 213 MHz 21 MHz 58 MHz 1 2 3 4 21 MHz 5 6 1’ 2’ 3’ 4’ 5’ 6’ V(H) H(V) 68 MHz 29 MHz Co-channel operation 400 MHz 213 MHz 21 MHz 58 MHz 21 MHz 1 2 3 4 5 6 1’ 2’ 3’ 4’ 5’ 6’ 1x 2x 3x 4x 5x 6x 1x’ 2x’ 3x’ 4x’ 5x’ 6x’ V(H) H(V) 29 MHz 68 MHz Figure 1-37 - U4 GHz Band Frequency Allocation (ITU-R F.382-6) Table 1.23 - U4 GHz Band Frequency Allocation (ITU-R F.382-6) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 3824.5 2980.5 2 3853.5 3009.5 3 3882.5 3038.5 4 3911.5 3067.5 5 3940.5 3096.5 6 3969.5 3125.5 1' 4037.5 3193.5 2' 4066.5 3222.5 3' 4095.5 3251.5 4' 4124.5 3280.5 5' 4153.5 3309.5 6' 4182.5 3338.5 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-63 1. GENERAL DESCRIPTION 1.8.2.2 UMN 4 GHz Band Frequency Allocation (ITU-R F. 635-3) Alternated operation 600 MHz 320 MHz 20 MHz 80 MHz 1 2 3 20 MHz 4 5 6 7 1’ 2’ 3’ 4’ 5’ 6’ 7’ V(H) H(V) 80 MHz 40 MHz Co-channel operation 600 MHz 320 MHz 20 MHz 80MHz 20 MHz 1 2 3 4 5 1x 2x 3x 4x 5x 6 7 1’ 2’ 3’ 4’ 5’ 6’ 7’ 1x’ 2x’ 3x’ 4x’ 5x’ 6x’ 7x’ V(H) H(V) 6x 7x 40 MHz 80 MHz Figure 1-38 - 4 GHz Band Frequency Allocation (ITU-R F. 635-3) Table 1.24 - 4 GHz Band Frequency Allocation (ITU-R F. 635-3) RF CH 1-64 RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 3620.0 2776.0 2 3660.0 2816.0 3 3700.0 2856.0 4 3740.0 2896.0 5 3780.0 2936.0 6 3820.0 2976.0 7 3860.0 3016.0 1’ 3940.0 3096.0 2’ 3980.0 3136.0 3’ 4020.0 3176.0 4’ 4060.0 3216.0 5’ 4100.0 3256.0 6’ 4140.0 3296.0 7’ 4180.0 3336.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.3 5 GHz Band Frequency Allocation (ITU-R F.1099 Annex-1) Alternated operation 600 MHz 300 MHz 30 MHz 80 MHz 1 2 3 30 MHz 4 5 6 7 1’ 2’ 3’ 4’ 5’ 6’ 7’ V(H) H(V) 60 MHz 40 MHz Co-channel operation 600 MHz 300 MHz 30 MHz 80MHz 1 2 3 1x 2x 3x 30 MHz 4 5 4x 5x 6 7 1’ 2’ 3’ 4’ 5’ 6’ 7’ 1x’ 2x’ 3x’ 4x’ 5x’ 6x’ 7x’ V(H) H(V) 6x 7x 40 MHz 60 MHz Figure 1-39 - 5 GHz Band Frequency Allocation (ITU-R F.1099 Annex-1) Table 1.25 - 5 GHz Band Frequency Allocation (ITU-R F.1099 Annex-1) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 4430.0 3586.0 2 4470.0 3626.0 3 4510.0 3666.0 4 4550.0 3706.0 5 4590.0 3746.0 6 4630.0 3786.0 7 4670.0 3826.0 1’ 4730.0 3886.0 2’ 4770.0 3926.0 3’ 4810.0 3966.0 4’ 4850.0 4006.0 5’ 4890.0 4046.0 6’ 4930.0 4086.0 7’ 4970.0 4126.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-65 1. GENERAL DESCRIPTION 1.8.2.4 UMN L6 GHz Band Frequency Allocation (ITU-R F. 383-5) Alternated operation 500 MHz 252.04 MHz 20.2 MHz 59.3 MHz 1 8 2 3 20.21 MHz 4 5 6 7 1’ 8’ 2’ 3’ 4’ 5’ 6’ 7’ V(H) H(V) 44.49 MHz 29.65 MHz Co-channel operation 500 MHz 252.04 MHz 20.2 MHz 59.3 MHz 1 8 2 3 1x 8 2x 3x 20.21 MHz 4 5 6 7 1’ 8’ 2’ 3’ 4’ 5’ 6’ 7’ 1x’ 8 ’ 2x’ 3x’ 4x’ 5x’ 6x’ 7x’ V(H) H(V) 4x 5x 6x 7x 29.65 MHz 44.49 MHz Figure 1-40 - L6 GHz Band Frequency Allocation (ITU-R F. 383-5) Table 1.26 - L6 GHz Band Frequency Allocation (ITU-R F. 383-5) RF CH 1-66 RF FREQUENCY (MHz) LO FREQUENCY (MHz) 1 5945.20 5101.20 2 5974.85 5130.85 3 6004.50 5160.50 4 6034.15 5190.15 5 6063.80 5219.80 6 6093.45 5249.45 7 6123.10 5279.10 8 6152.75 5308.75 1’ 6197.24 5353.24 2’ 6226.89 5382.89 3’ 6256.54 5412.54 4’ 6286.19 5442.19 5’ 6315.84 5471.84 6’ 6345.49 5501.49 7’ 6375.14 5531.14 8’ 6404.79 5560.79 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.5 U6 GHz Band Frequency Allocation (ITU-R F. 384-5) Alternated operation 680 MHz 340 MHz 30 MHz 80 MHz 1 8 2 3 30 MHz 4 5 6 7 1’ 8’ 2’ 3’ 4’ 5’ 6’ 7’ V(H) H(V) 60 MHz 40 MHz Co-channel operation 680 MHz 340 MHz 30 MHz 30 MHz 30 MHz 1 8 2 3 4 5 1x 8 2x 3x 4x 5x 6 7 1’ 8’ 2’ 3’ 4’ 5’ 6’ 7’ 1x’ 8 ’ 2x’ 3x’ 4x’ 5x’ 6x’ 7x’ V(H) H(V) 6x 7x 40 MHz 60 MHz Figure 1-41 - U6 GHz Band Frequency Allocation (ITU-R F. 384-5) Table 1.27 - U6 GHz Band Frequency Allocation (ITU-R F. 384-5) RF CH RF Frequency (MHz) LO Frequency MHz) 1 6460.0 5616.0 2 6500.0 5656.0 3 6540.0 5696.0 4 6580.0 5736.0 5 6620.0 5776.0 6 6660.0 5816.0 7 6700.0 5856.0 8 6740.0 5896.0 1’ 6800.0 5956.0 2’ 6840.0 5996.0 3’ 6880.0 6036.0 4’ 6920.0 6076.0 5’ 6960.0 6116.0 6’ 7000.0 6156.0 7’ 7040.0 6196.0 8’ 7080.0 6236.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-67 1. GENERAL DESCRIPTION 1.8.2.6 UMN L7 GHz Band Frequency Allocation (ITU-R F. 385-6) Alternated operation 300 MHz 161 MHz 10 MHz 56 MHz 1 2 3 4 17MHz 5 1’ 2’ 3’ 4’ 5’ V(H) H(V) 49 MHz 28 MHz Figure 1-42 - L7 GHz Band Frequency Allocation (ITU-R F. 385-6) Table 1.28 - L7 GHz Band Frequency Allocation (ITU-R F. 385-6) RF CH 1-68 RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 7135 6291 2 7163 6319 3 7191 6347 4 7219 6375 5 7247 6403 1’ 7296 6452 2’ 7324 6480 3’ 7352 6508 4’ 7380 6536 5’ 7408 6564 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.7 U7 GHz Band Frequency Allocation (ITU-R F. 385-6) Alternated operation 300 MHz 154 MHz 17 MHz 56 MHz 1 2 3 4 17MHz 5 1’ 2’ 3’ 4’ 5’ V(H) H(V) 42 MHz 28 MHz Figure 1-43 - U7 GHz Band Frequency Allocation (ITU-R F. 385-6) Table 1.29 - U7 GHz Band Frequency Allocation (ITU-R F. 385-6) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 7442 6598 2 7470 6626 3 7498 6654 4 7526 6682 5 7554 6710 1’ 7596 6752 2’ 7624 6780 3’ 7652 6808 4’ 7680 6836 5’ 7708 6864 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-69 1. GENERAL DESCRIPTION 1.8.2.8 UMN L8 GHz Band Frequency Allocation (ITU-R F. 386-4) Alternated operation 550 MHz 311.32 MHz 22.7 MHz 59.3 MHz 1 2 3 4 8.43 MHz 5 6 7 8 1’ 2’ 3’ 4’ 5’ 6’ 7’ 8’ V(H) H(V) 103.77 MHz 29.65 MHz Co-channel operation 550 MHz 311.32 MHz 22.7 MHz 59.3 MHz 8.43MHz 1 2 3 4 5 1x 2x 3x 4x 5x 6 7 8 1’ 2’ 3’ 4’ 5’ 6’ 7’ 8’ 2x’ 3x’ 4x’ 5x’ 6x’ 7x’ 8x’ V(H) H(V) 6x 7x 8x 1x’ 29.65 MHz 103.77 MHz Figure 1-44 - L8 GHz Band Frequency Allocation (ITU-R F. 386-4) Table 1.30 - L8 GHz Band Frequency Allocation (ITU-R F. 386-4) RF CH 1-70 RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 7747.70 6903.70 2 7777.35 6933.35 3 7807.00 6963.00 4 7836.65 6992.65 5 7866.30 7022.30 6 7895.95 7051.95 7 7925.60 7081.60 8 7955.25 7111.25 1’ 8059.02 7215.02 2’ 8088.67 7244.67 3’ 8118.32 7274.32 4’ 8147.97 7303.97 5’ 8177.62 7333.62 6’ 8207.27 7363.27 7’ 8236.92 7392.92 8’ 8266.57 7422.57 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.9 11 GHz Band Frequency Allocation (ITU-R F. 387-6) Alternated operation 1000 MHz 530 MHz 15 MHz 80 MHz 1 2 3 15MHz 4 10 11 12 1’ 2’ 3’ 4’ 10’ 11’ 12’ V(H) H(V) 90 MHz 40 MHz Co-channel operation 1000 MHz 530 MHz 15 MHz 80 MHz 15MHz 1 2 3 4 10 1x 2x 3x 4x 10x 11 12 1’ 2’ 3’ 4’ 10’ 11’ 12’ 1x’ 2x’ 3x’ 4x’ 10x’ 11x’ 12x’ V(H) H(V) 11x 12x 40 MHz 90 MHz Figure 1-45 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6) Table 1.31 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 10715.0 9871.0 2 10755.0 9911.0 3 10795.0 9951.0 4 10835.0 9991.0 5 10875.0 10031.0 6 10915.0 10071.0 7 10955.0 10111.0 8 10995.0 10151.0 9 11035.0 10191.0 10 11075.0 10231.0 11 11115.0 10271.0 12 11155.0 10311.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-71 1. GENERAL DESCRIPTION UMN Table 1.26 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6) (Continued) RF CH 1-72 RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1’ 11245.0 10401.0 2’ 11285.0 10441.0 3’ 11325.0 10481.0 4’ 11365.0 10521.0 5’ 11405.0 10561.0 6’ 11445.0 10601.0 7’ 11485.0 10641.0 8’ 11525.0 10681.0 9’ 11565.0 10721.0 10’ 11605.0 10761.0 11’ 11645.0 10801.0 12’ 11685.0 10841.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.2.10 11 GHz Band Frequency Allocation (ITU-R F. 387-6 Annex-2) Alternated operation 1000 MHz 490 MHz 35 MHz 80 MHz 1 2 3 35MHz 4 10 11 12 1’ 2’ 3’ 4’ 10’ 11’ 12’ V(H) H(V) 50 MHz 40 MHz Co-channel operation 1000 MHz 490 MHz 35 MHz 80 MHz 35MHz 1 2 3 4 10 1x 2x 3x 4x 10x 11 12 1’ 2’ 3’ 4’ 10’ 11’ 12’ 1x’ 2x’ 3x’ 4x’ 10x’ 11x’ 12x’ V(H) H(V) 11x 12x 40 MHz 50 MHz Figure 1-46 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6 Annex-2) Table 1.32 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6 Annex-2) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 10735.0 9891.0 2 10775.0 9931.0 3 10815.0 9971.0 4 10855.0 10011.0 5 10895.0 10051.0 6 10935.0 10091.0 7 10975.0 10131.0 8 11015.0 10171.0 9 11055.0 10211.0 10 11095.0 10251.0 11 11135.0 10291.0 12 11175.0 10331.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-73 1. GENERAL DESCRIPTION UMN Table 1.27 - 11 GHz Band Frequency Allocation (ITU-R F. 387-6 Annex-2) (Continued) RF CH 1-74 RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1’ 11225.0 10381.0 2’ 11265.0 10421.0 3’ 11305.0 10461.0 4’ 11345.0 10501.0 5’ 11385.0 10541.0 6’ 11425.0 10581.0 7’ 11465.0 10621.0 8’ 11505.0 10661.0 9’ 11545.0 10701.0 10’ 11585.0 10741.0 11’ 11625.0 10781.0 12’ 11665.0 10821.0 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION 1.8.3 13 GHz Band Frequency Allocation (ITU-R F.497-4) Alternated operation 500MHz 266 MHz 15 MHz 56 MHz 1 2 3 4 23 MHz 5 6 7 8 1’ 2’ 3’ 4’ 5’ 6’ 7’ 8’ V(H) H(V) 70 MHz 28 MHz Figure 1-47 - 13 GHz Band Frequency Allocation (ITU-R F.497-4) Table 1.33 - 13 GHz Band Frequency Allocation (ITU-R F.497-4) RF CH RF FREQUENCY(MHz) LO FREQUENCY(MHz) 1 12765 11921 2 12793 11949 3 12821 11977 4 12849 12005 5 12877 12033 6 12905 12061 7 12933 12089 8 12961 12117 1’ 13031 12187 2’ 13059 12215 3’ 13087 12243 4’ 13115 12271 5’ 13143 12299 6’ 13171 12327 7’ 13199 12355 8’ 13227 12383 SRT 1F 911-362/02C0000 Issue 3, May 2004 1-75 1. GENERAL DESCRIPTION 1.8.4 1.8.4.1 UMN RF Branching Network RF Branching Network (7+1) or 2x(7+1) The RF branching network for alternate operation is shown in Figure 1-48 to Figure 1-49. Figure 1-48 shows (7+1) BRU with SD for alternated operation using a dual polarization antenna. When expansion of this system is requested, co-channel operation will be applied. Figure 1-49 shows 2×(7+1) BRU with SD for co-channel operation. Vertical or Horizontal polarization V-TRANSMIT SIDE ch-1 MTSU ch-1 (Transmitter) ch-5 MTSU ch-5 (Transmitter) BEF ch-5’ MTSU ch-7 (Transmitter) MTSU ch-5’ (MN receiver) MTSU ch-2’ (SD receiver) MTSU ch-7’ (SD receiver) MTSU ch-6’ (SD receiver) MAIN ANT BEF MTSU ch-7’ (MN receiver) ch-4’ BPF CIR BPF ch-6’ MTSU ch-1’ (MN receiver) ch-7’ BPF CIR BPF ch-2’ MTSU ch-3’ (SD receiver) ch-1’ BPF CIR BPF ch-5’ ch-7’ BPF CIR BPF (SD receiver) MTSU ch-3’ (MN receiver) ch-3’ BPF CIR BPF MTSU ch-5’ ch-3’ MTSU ch-3 (Transmitter) ch-7 BPF CIR BPF ch-1’ MTSU ch-1’ (SD receiver) ch-3 BPF CIR BPF H or V V-RECEIVE SIDE DUP V or H MTSU ch-4’ (SD receiver) ch-8’ BPF CIR BPF MTSU ch-8’ (SD receiver) V or H Horizontal or Vertical polarization H-TRANSMIT SIDE ch-4 MTSU ch-4 (Transmitter) ch-8 MTSU ch-8 (Transmitter) ch-2 BPF CIR BPF BEF ch-2’ MTSU ch-2 (Transmitter) MTSU ch-2’ (MN receiver) MTSU ch-6 (Transmitter) MTSU ch-6’ (MN receiver) ch-6 BPF CIR BPF SD ANT H-RECEIVE SIDE DUP ch-4’ BPF CIR BPF ch-6’ H or V MTSU ch-4’ (MN receiver) ch-8’ BPF CIR BPF MTSU ch-8’ (MN receiver) BRU Figure 1-48 - (7+1) BRU for Alternated Operation 1-76 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Vertical or Horizontal polarization V or H H or V ch-1 MTSU ch-1 (Transmitter) ch-2 ch-5 ch-8 BEF ch-2’ MTSU ch-2’ (MN receiver) MTSU ch-7 (Transm itter) MTSU ch-5’ (MN receiver) MTSU ch-6 (Transm itter) MTSU ch-6’ (MN receiver) MTSU ch-4’ (SD receiver) MTSU ch-6’ (SD receiver) ch-4’ BPF CIR BPF MTSU ch-4’ (MN receiver) ch-7’ BEF MTSU ch-8’ (MN receiver) ch-7’ MTSU ch-7’ (SD receiver) BPF CIR BPF ch-6’ MTSU ch-7’ (MN receiver) ch-8’ BPF CIR BPF ch-5’ MTSU ch-1’ (MN receiver) ch-4’ BPF CIR BPF ch-6’ MTSU ch-5’ (SD receiver) BEF BPF CIR BPF ch-5’ MTSU ch-3’ (SD receiver) MAIN ANT ch-1’ BPF CIR BPF ch-2’ ch-3’ BPF CIR BPF MTSU ch-2’ (SD receiver) MTSU ch-4 (Transm itter) ch-6 BPF CIR BPF ch-1’ MTSU ch-1’ (SD receiver) MTSU ch-3’ (MN receiver) ch-7 BPF CIR BPF BEF ch-3’ MTSU ch-3 (Transm itter) ch-4 BPF CIR BPF MTSU ch-5 (Transmitter) MTSU ch-8 (Transmitter) ch-3 BPF CIR BPF MTSU ch-2 (Transmitter) DUP ch-8’ MTSU ch-8’ (SD receiver) BPF CIR BPF V or H BRU-1 H or V Horizontal or Vertical polarization ch-1 MTSU ch-1 (Transmitter) BPF CIR BPF ch-2 MTSU ch-2 (Transmitter) ch-5 ch-8 BEF MTSU ch-1’ (SD receiver) BEF ch-2’ MTSU ch-2’ (MN receiver) MTSU ch-7 (Transm itter) MTSU ch-5’ (MN receiver) MTSU ch-6 (Transm itter) MTSU ch-6’ (MN receiver) MTSU ch-4’ (SD receiver) MTSU ch-6’ (SD receiver) ch-4’ BPF CIR BPF MTSU ch-4’ (MN receiver) ch-7’ MTSU ch-7’ (MN receiver) MTSU ch-8’ (MN receiver) ch-7’ BPF CIR BPF ch-6’ BEF ch-8’ BPF CIR BPF ch-5’ MTSU ch-1’ (MN receiver) ch-4’ BPF CIR BPF ch-6’ MTSU ch-5’ (SD receiver) BEF BPF CIR BPF ch-5’ MTSU ch-3’ (SD receiver) ch-1’ BPF CIR BPF ch-2’ ch-3’ BPF CIR BPF MTSU ch-2’ (SD receiver) MTSU ch-4 (Transm itter) ch-6 BPF CIR BPF ch-1’ MTSU ch-3’ (MN receiver) ch-7 BPF CIR BPF MTSU ch-8 (Transmitter) ch-3’ MTSU ch-3 (Transm itter) ch-4 BPF CIR BPF MTSU ch-5 (Transmitter) DUP ch-3 SD ANT MTSU ch-7’ (SD receiver) ch-8’ BPF CIR BPF MTSU ch-8’ (SD receiver) BRU-2 Figure 1-49 - 2× ×(7+1) BRU with SD for Co-Channel Operation SRT 1F 911-362/02C0000 Issue 3, May 2004 1-77 1. GENERAL DESCRIPTION 1.8.4.2 UMN RF Branching Network (Double Terminal) Same as SRT 1F Standard Terminal, antenna connections are physically limited to maximum 4 ports on rack. 1 3 5 7 Top view of Waveguide Flange with SD V MAIN V (or H) SD MAIN SD with SD 1 For East (NE-A) 3 5 7 NE-A NE-B For West (NE-B) Figure 1-50 - Frequency Arrangement – Alternated Operation 1 2 3 Top view of Waveguide Flange 4 with SD V (or H) MAIN SD H (or V) MAIN SD with SD 1 For East (NE-A) 2 3 4 NE-A NE-B For West (NE-B) Figure 1-51 - Frequency Arrangement – Co-Channel Operation N.B.-Due to TX-RX interference reason, both NE (NE-A and NE-B) accommodated in a rack must use a same RF half-band, i.e. either Lower half-band or Upper half-band. 1-78 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION Figure 1-52 shows 2×(3+1) BRU with SD for alternated operation. Vertical or Horizontal polarization V-TRANSMIT SIDE ch-1 MTSU ch-1 (Transmitter) BPF CIR BPF ch-5 MTSU ch-5 (Transmitter) BEF MTSU ch-7 (Transmitter) MTSU ch-5’ (MN receiver) BPF CIR BPF ch-5’ MAIN ANT ch-1’ BEF MTSU ch-1’ (MN receiver) ch-7’ MTSU ch-7’ (MN receiver) BPF CIR BPF MTSU ch-3’ (SD receiver) ch-7’ BPF CIR BPF (SD receiver) MTSU ch-3’ (MN receiver) ch-3’ BPF CIR BPF ch-5’ MTSU ch-5’ ch-3’ MTSU ch-3 (Transmitter) ch-7 BPF CIR BPF ch-1’ MTSU ch-1’ (SD receiver) V-RECEIVE SIDE DUP ch-3 V or H MTSU ch-7’ (SD receiver) H or V BRU East (system “A”) SD ANT Vertical or Horizontal polarization V-TRANSMIT SIDE ch-1 MTSU ch-1 (Transmitter) BPF CIR BPF ch-5 MTSU ch-5 (Transmitter) BEF (SD receiver) MTSU ch-3’ (MN receiver) MTSU ch-7 (Transmitter) MTSU ch-5’ (MN receiver) BPF CIR BPF ch-5’ MAIN ANT ch-1’ BEF MTSU ch-1’ (MN receiver) ch-7’ BPF CIR BPF MTSU ch-7’ (MN receiver) ch-3’ BPF CIR BPF ch-5’ MTSU ch-5’ ch-3’ MTSU ch-3 (Transmitter) ch-7 BPF CIR BPF ch-1’ MTSU ch-1’ (SD receiver) V-RECEIVE SIDE DUP ch-3 V or H MTSU ch-3’ (SD receiver) ch-7’ BPF CIR BPF MTSU ch-7’ (SD receiver) H or V BRU West (system “B”) SD ANT Figure 1-52 – 2x(3+1) Double Terminal BRU for Alternated Operation SRT 1F 911-362/02C0000 Issue 3, May 2004 1-79 1. GENERAL DESCRIPTION 1.8.4.3 UMN BRU (1+1 NE) From physical restriction, basically, the compact shelf for the “1+1 N.E.” model can equip maximum three (3) filter bodies, each of which contains a pair of two frequency channels. ex. Prot = CH1 (V) / M1 = CH3 (V) Non-SD model R T 1’ (V) SD model DUP (V) TRD (V) SD R T 1 (V) 1’ (V) 1’ (V) 1 (V) C C C C C 3’ (V) 3 (V) 3’ (V) 3’ (V) 3 (V) R T SD R T DUP (V) Figure 1-53 – 1+1 configuration – Alternated Operation / Single Pol. ex. Prot = CH1 (V) / M1 = CH3 (H) Non-SD model DUP (H) T T 3 (H) 1 (V) C C 3’ (H) 1’ (V) R R SD model DUP (V) DUP (H) SD 3’ (H) C C TRD (H) 1’ (V) SD T T 3 (H) 1 (V) C C 3’ (H) 1’ (V) R R DUP (V) TRD (V) Figure 1-54 – 1+1 configuration – Alternated Operation / Dual Pol. 1-80 SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 1. GENERAL DESCRIPTION ex. Prot = CH1 (V) / M1 = CH1 (H) Non-SD model DUP (H) T T 1 (H) 1 (V) C C 1’ (H) 1’ (V) R R SD model DUP (V) DUP (H) SD 1’ (H) C C TRD (H) 1’ (V) SD T T 1 (H) 1 (V) C C 1’ (H) 1’ (V) R R DUP (V) TRD (V) Figure 1-55 – 1+1 configuration -Co-Channel Operation / Dual Pol. SRT 1F 911-362/02C0000 Issue 3, May 2004 1-81 1. GENERAL DESCRIPTION 1-82 UMN SRT 1F 911-362/02C0000 Issue 3, May 2004 UMN 2 Table of Contents EQUIPMENT DESCRIPTION 2.1 2.1.1 Equipment Configurations and Features SRT 1F System The SRT 1F radio equipment is designed to transmit STM-1 (155.520 Mb/s) signals. The SRT 1F is equipped with N+1 Radio Protection System (RPS). Possible configurations of the SRT 1F are: • N+1 Terminal with STM-1 Electrical Interface (SE INTF). • N+1 Terminal with STM-1 Optical Interface with Multiplex Section Protection (OPT INTF with MSP). • N+1 Terminal with STM-1 Optical Interface without Multiplex Section Protection (OPT INTF without MSP). • N+1 Double Terminal with STM-1 Electrical Interface (SEINTF). • 1+1 NE Terminal with STM-1 Electrical Interface + Optical Interface. The SRT 1F consists of four functional blocks. • BRU: Branching Network Unit with RF filters, circulators and a duplexer for RF combining/branching and interface to/from the antenna system. • MSTU: Main Signal Transmission Unit with Transmitter (TX), Receiver (RX), Modulator (MOD), Demodulator (DEM) and STM-1 Electrical interface (SE INTF) functions. • SCSU: Supervisory, Control & Switching Unit with Supervisory (SV), Bipolar Switch (BSW), Timing Control (TCU), Embedded Communication (ECU) and Housekeeping (HK) functions. • BBIU: Base-Band Interface Unit with Baseband Interface for STM-1 Optical. Multiplex Section Protection Switches (MSPSW) are also accommodated in this unit. The BBIU is optional for the Terminal with OPT INTF (NON PREVISTA PER DOPPIO TERMINALE) • In the 1+1 NE configuration all the functional blocks are installed in a shelf. Figure 2-1 shows the standard equipment layout (for N+1 or 2x(N+1) configuration). Figure 2-3 shows the standard equipment layout (for N+1 double terminal configuration). Figure 2-5 shows the standard equipment layout (for 1+1 N.E. configuration). Figure 2-2 shows the equipment configuration for Terminal SRT 1F 911-362/02C0000 Issue 1, January 2002 2-1 Table of Contents UMN 2.1.1.1 Terminal BRU BRU Branching Network Unit MSTU8 MSTU7 MSTU6 MSTU5 MSTU4 MSTU3 MSTU2 MSTU1 MSTU Main Signal Transmission Unit BSW1 BSW3 BSW5 BSW7 ECU2 [M5] [M6] [M7] SV [M4] ECU1 [M3] BSW6 [M2] BSW4 [M1] BSW2 [P] Connection SCSU Area * OCC INTF HK2 HK1 TCU Y TCU X Supervisory, Control & Switching Unit BBIU (option) BB INTF Y BB INTF X [M6] BB INTF Y BB INTF X [M5] BB INTF Y BB INTF X [M4] BB INTF Y BB INTF X BB INTF Y BB INTF X [M3] MSPSW MSPSW 6 MSPSW BB INTF Y BB INTF X BB INTF Y BB INTF X BB INTF P [M2] MSPSW MSPSW 3 MSPSW 2 MSPSW 1 BBC [M1] BaseBand Interface Unit BBIU is optional for the Terminal equipment of the Optical interface [M7] BB INTF (X/Y) : Connection OPT INTF (X/Y) for STM-1 Optical Interface with AreaMSP *OPT INTF(X) for STM-1 Optical Interface without MSP Figure 2-1 - Standard Equipment Layout (not in scale) 2-2 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-2 shows the Terminal equipment configuration. The BBIU is installed for the Terminal with Optical interface, but not for the STM-1 Electrical interface. BRU MSTU SCSU BRU MSTU SCSU BBIU Terminal Equipment with SE INTF Terminal Equipment with OPT INTF a) b) Figure 2-2 - Equipment Configuration for Terminal SRT 1F 911-362/02C0000 Issue 1, January 2002 2-3 Table of Contents UMN 2.1.1.2 Double Terminal BRU BRU Branching Network Unit MSTU8 MSTU7 MSTU6 MSTU5 MSTU4 MSTU3 MSTU2 MSTU1 MSTU Main Signal Transmission Unit [BM2] [BM3] SCSU Supervisory, Control & Switching Unit SV [B-P] [BM1] BSW2 SV BSW3 BSW2 BSW1 [AM3] BSW3 [AM2] BSW1 [ A-P ] [AM1] Connection Area OCC INTF HK TCU X OCC INTF HK TCU X SYS. “A” SYS. “B” Figure 2-3 - Standard Equipment Layout (not in scale) for N+1 Double Terminal 2-4 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-4 shows the physical layout of NE-A and NE-B blocks equipped in a Double Terminal. BRU Circuit for NENE - A W1 W2 W3 P MSTU8 B MSTU7 A MSTU6 NE MSTU5 MSTU4 NE MSTU for NENE - B W1 W 2 W 3 BSW3 BSW2 BSW1 BSW3 BSW2 BSW1 OCC INTF HK TCU HK TCU OCC INTF SV SV SCSU Circuit for NENE - A MSTU3 P MSTU2 MSTU1 MSTU for NENE - A BRU Circuit for NENE - B SCSU Circuit for NENE - B * BBIU (PDH 140Mbps or STM-1 optical interface) is not applicable. Figure 2-4 - NE- A and NE-B in Double Terminal Left side area of rack is a space for NE-A and right side area for NE-B. There are three patterns available in the way how to equip NE-A and/or NE-B, depends upon user’s request, as described in the table 1 below. Table 1 - Physical Layout Patterns in Double Terminal Pattern A Pattern B Pattern C NE-A √ - √ NE-B - √ √ The maximum configuration of each NE-A and NE-B is 3+1. Both NE-A and NE-B has its own SV unit in SCSU shelf so that the two RPS (Radio Protection System) mechanisms are working for NE-A and NE-B independently with different NE-IDs (Netword Element ID). SRT 1F 911-362/02C0000 Issue 1, January 2002 2-5 Table of Contents 2.1.1.3 UMN 1+1 N.E.Terminal BRU BRU Branching Network Unit M M MSTU S S Main Signal Transmission T T U U P T C U O C C O W Unit S V B S W Supervisory, Control & Switching Unit O P T Figure 2-5 – 1+1 NE Equipment Layout 2-6 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-6 shows the 1+1 N.E Terminal equipment configurations. 1+0 configuration, STM-1e interface 1+1 configuration, STM-1e interface 1+1 OCC configuration, STM-1e interface M M M M M S S S S S T T U U P W T U T C U T C U S W V T T U U P W S B S W V 1+1 configuration, STM-1o interface M M M M S S S S S T T U U P W U T C U T C U S W V B S W V T T U U P W T C U S O P T V B S W S 1+1 OCC configuration, STM-1o interface M T O C C E B S W B S W 1+0 configuration, STM-1o interface T C U O P T O C C O S V B S W O P T Figure 2-6 - Equipment Configurations for 1+1 N.E. Terminal SRT 1F 911-362/02C0000 Issue 1, January 2002 2-7 Table of Contents 2.1.2 2.1.2.1 UMN Baseband Interface N+1 / 2x(N+1) The SRT 1F has three types of baseband interface: 2.1.2.2 • SE INTF: STM-1 Electrical Interface, the basic type of interface. The SRT 1F with SE INTF is composed of BRU, MSTU and SCSU. Figure 2-7 shows the schematic diagram. • OPT INTF (with MSP): STM-1 Optical Interface Multiplex Section, the type of interface with optical line protection (MSP). The SRT 1F with OPT INTF (MS) is composed of BRU, MSTU, SCSU and BBIU. Figure 2-8shows the schematic diagram. • OPT INTF (without MSP): STM-1 Optical Interface Regenerator Section, the type of interface without optical line protection. The SRT 1F with OPT INTF (RS) is composed of BRU, MSTU, SCSU and BBIU. Figure 2-9 shows the schematic diagram. N+1 Double Terminal • 2.1.2.3 2-8 SE INTF: STM-1 Electrical Interface, the basic type of interface. The SRT 1F with SE INTF is composed of BRU, MSTU and SCSU. Figure 2-10 shows the schematic diagram. 1+1 NE • SE INTF: STM-1 Electrical Interface, the basic type of interface. The SRT 1F with SE INTF is composed of BRANCH., MSTU and SCSUSECTION. Figure 2-11 shows the schematic diagram. • OPT CONV (Optical Interface Converter): OPT CONV is an option card exclusive designed for SRT 1F 1+1 NON EXPANDABLE MODEL that translate the STM-1 signal interface between Electrical interface and Optical interface. This card is a simple media converter without MSP function. Figure 2-12 shows the schematic diagram. • OPT OCC (Occasionale Traffic Interface for Optics): OPT OCC is an option card exclusive designed for SRT 1F 1+1 NON EXPANDABLE MODEL that provide an optical interface for occasional etraffic. This card is a simple media converter without MSP function. SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.1.3 Alternated and Co-channel Operation The SRT 1F can provide two frequency allocation systems as follows: • Alternated operation: An STM-1 signal is transmitted by an RF frequency using single polarization. • Co-channel operation: Two STM-1 signals are transmitted simultaneously by an RF frequency using dual polarization. This system is provided as an option to double the spectrum efficiency. The transmission capacity of Way side and User channel will be doubled through this cochannel operation system. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-9 Table of Contents UMN Figure 2-7 shows the schematic diagram of STM-1 Electrical Interface Terminal without SD (Space Diversity). TDP Prot CH USW RDP USW DEM RX STM-1 CMI TDP USW STM-1 CMI BPF USW DEM RX BPF MSTU TDP USW MOD TX BSW RDP USW DEM RX WS R,S UC(F1) STM-1 CMI MOD TX BSW WS R,S UC(F1) Main 3 BPF MSTU RDP Main 2 DUP BPF STM-1 CMI STM-1 Electrical In/out Main 1 MOD TX BPF BPF MSTU TDP USW MOD TX BPF BSW RDP USW WS R,S UC(F1) DEM RX BPF MSTU BRU UC(F1) WS R,S To/from Main N STM-1 CMI RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO STM-1 Unipolar NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control & Switching Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-7 - Schematic Diagram of STM-1 Electrical Interface Terminal SCSU 2-10 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-8 shows the schematic diagram of STM-1 Optical Interface Terminal with MSP and without SD. This configuration provides Multiplex Section Protection (MSP) for the optical line interface. TDP Prot CH USW RDP BPF USW DEM RX BPF MSTU OPT INTF Main 1 MSP SW STM-1 CMI TDP USW MOD TX BPF BSW RDP OPT INTF Y DUP STM-1 CMI STM-1 Optical In/out X MOD TX USW DEM RX BPF WS R,S MSTU UC(F1) OPT INTF X Main 2 MSP SW TDP USW MOD TX BSW RDP OPT INTF Y STM-1 CMI USW DEM RX WS R,S BPF BPF MSTU UC(F1) OPT INTF X Main 3 MSP SW TDP USW MOD TX BPF BSW RDP OPT INTF Y STM-1 CMI USW DEM RX BPF WS R,S MSTU UC(F1) BBIU BRU UC(F1) WS R,S To/from Main N STM-1 CMI RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO STM-1 Unipolar NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control & Switching Unit BBIU : BaseBand Interface Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-8 - Schematic Diagram of STM-1 Optical Interface Terminal with MSP SCSU SRT 1F 911-362/02C0000 Issue 1, January 2002 2-11 Table of Contents UMN Figure 2-9 shows the schematic diagram of STM-1 Optical Interface Terminal without MSP and without SD. TDP Prot CH USW MOD TX DUP BPF STM-1 CMI RDP USW DEM RX STM-1 Optical In/out BPF MSTU Main 1 OPT INTF STM-1 CMI TDP USW MOD TX BPF BSW MSP SW RDP USW DEM RX BPF WS R,S UC(F1) MSTU Main 2 OPT INTF STM-1 CMI TDP RDP UC(F1) USW MOD TX BSW MSP SW USW DEM RX WS R,S BPF BPF MSTU Main 3 OPT INTF STM-1 CMI TDP RDP UC(F1) USW MOD TX BPF BSW MSP SW USW DEM RX BPF WS R,S MSTU BBIU BRU UC(F1) WS R,S To/from Main N STM-1 CMI RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO STM-1 Unipolar NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control & Switching Unit BBIU : BaseBand Interface Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-9 - Schematic Diagram of STM-1 Optical Interface Terminal without MSP SCSU 2-12 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-10 shows the schematic diagram of STM-1 Electrical Interface Terminal without SD (Space Diversity) for Double Terminal configuration. TDP Prot CH USW RDP USW STM-1 CMI TDP USW STM-1 CMI MOD TX USW DEM RX TDP USW MOD TX BSW RDP USW DEM RX WEST WS R,S UC(F1) STM-1 CMI BPF BPF MSTU OR Main 3 BPF BSW WS R,S UC(F1) Main 2 DEM RX MSTU RDP EAST DUP BPF STM-1 CMI STM-1 Electrical In/out Main 1 MOD TX BPF BPF MSTU TDP USW MOD TX BPF BSW RDP USW WS R,S UC(F1) DEM RX BPF MSTU BRU RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control & Switching Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-10 - Schematic Diagram of STM-1 Electrical Interface Terminal (Double Terminal) SCSU SRT 1F 911-362/02C0000 Issue 1, January 2002 2-13 Table of Contents UMN Figure 2-11 shows the schematic diagram of STM-1 Electrical Interface Terminal without SD (Space Diversity) for 1+1 N.E. configuration. TDP Prot CH USW DUP BPF STM-1 CMI RDP USW STM-1 Electrical In/out Main 1 MOD TX DEM RX BPF MSTU STM-1 CMI TDP USW RDP USW WS R,S UC(F1) RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO MOD TX BPF BSW DEM RX BPF MSTU BRU NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-11 - Schematic Diagram of STM-1 Electrical Interface Terminal (1+1 N.E. Configuration) 2-14 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-12 shows the schematic diagram of STM-1 Optical Interface Terminal without SD (Space Diversity) for 1+1 N.E. configuration. TDP Prot CH USW MOD TX DUP BPF STM-1 CMI RDP USW STM-1 Optical In/out DEM RX BPF MSTU Main 1 OPT STM-1 CMI INTF TDP USW RDP USW WS R,S UC(F1) RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO MOD TX BPF BSW DEM RX BPF MSTU BRU NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit LCT EXT CLK OUT EXT CLK IN EQPT CLK MON Figure 2-12 - Schematic Diagram of STM-1 Optical Interface Terminal (1+1 N.E. Configuration) SRT 1F 911-362/02C0000 Issue 1, January 2002 2-15 Table of Contents UMN 2.2 STM-1 Signal Transmission 2.2.1 STM-1 Electrical Signal Interface SCSU The STM-1 Electrical signal input/output terminals are located on the BSW (Bipolar Switch) front panel on the SCSU (Supervisory, Control & Switching Unit). BBIU Input/output terminals for STM-1 Optical are located on the front panels of the OPT INTF unit of BBIU (Baseband interface unit). The Optical STM-1 is converted to the STM-1 CMI signal and sent to the BSW unit of the SCSU. 2.2.2 Main Signal Flow (MSTU Function) The MSTU (Main Signal Transmission Unit) is composed of Transmitter (TX), Receiver (RX), Modulator (MOD), Demodulator (DEM) and STM-1 Electrical interface (SE INTF) functions. The Unipolar Switch (USW) for the Radio Protection System (RPS) is also a part of the MSTU. SE INTF The STM-1 CMI signal inputs from the BSW unit of SCSU. The incoming STM-1 CMI signal is converted to eight unipolar signal streams and applied to the Transmit Data Processing (TDP) circuit. TDP The TDP circuit processes drop/insert the Multiplex Section Overhead (MSOH) and Regenerator Section Overhead (RSOH) to be terminated from the STM-1 data. The AU-Pointer is also re-written. A Unipolar Switch (USW) provides hitless switching for the Radio Protection System. After the USW, the Radio Frame Complementary Overhead (RFCOH) is applied to the incoming STM-1 signal to compose the Radio Frame. The RFCOH is composed of Radio Frame Alignment, Wayside, Radio Service Channel, RPS Control, Redundancy bit for MLCM and other signals. Multi-Level Coded Modulation (MLCM) is provided to perform forward error correction on the data to transmit across the radio section. QAM MOD Module The Radio Frame inputs the QAM Modulator Module (QAM MOD Module). The QAM MOD Module is composed of a spectrum shaping device and a Modulator controller (MOD), the Digital to analog converter (D/A) and the Quadrature Amplitude Modulator (QAM) to generate the QAM signal. The QAM MOD Module output is applied to the Transmit IF (TIF) circuit. 2-16 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents TIF The incoming QAM signal is converted to the 1st IF (70MHz) signal. The 1st IF signal is amplified by the AGC amplifier, then applied to the Linearizer (LNZ). The LNZ works to compensate the distortion which is caused by the non-linearity of the RF transmit circuit. The 1st IF signal is converted to the 2nd IF (844MHz) signal, then applied to the Transmit RF Module (TRF Module). TRF Module The TRF accepts the 2nd IF and converts it to the Radio Frequency (RF) by mixing it with the signal outputting from the Local Oscillator Module (LO Module). The RF signal is amplified through RF amplifiers. The MSTU output level is +29 dBm (+ 27 dBm for 13 GHz). It is controlled by the Automatic Level Control (ALC) which keeps it constant against input signal level, amplifier gain and other ambient factor variations. High power version transmitting +32dBm is available from 4 GHz to 8 GHz. Automatic Transmit Power Control (ATPC) can automatically control the MSTU output power within +29 dBm (HIGH) and +19 dBm (LOW) based on the propagation loss across the radio section. The ATPC automatically changes the MSTU output level back to HIGH when the RX receiving level becomes lower than the specified level. ATPC is an option setting through the LCT. This function is provided to save the power drained by the MSTU and improve possible interference on adjacent frequency channels and opposite polarization. The MSTU output is applied to the Branching Network Unit (BRU), then to the antenna. The spurious emission of the transmitter is suppressed by the BRU’s Band-Pass Filter (BPF). LO Module The LO Module is a phase-locked loop oscillator circuit supplying the RF Local signals to the Transmitter and Receiver. The oscillation frequency setting is based on MSTU operation frequency. RRF Module The Receive RF Module (RRF Module) accepts the received RF signal from the antenna through BRU. Receiver selectivity is determined by the BRU’s BPF. The received RF signal (standard level : - 35 dBm, AGC dynamic range: - 17 dBm to - 70s dBm) is amplified by a Low Noise Amplifier (LNA), then converted to the 2nd IF (844MHz). The 2nd IF signal is amplified and applied to the Receive IF (RIF) circuit. RIF The 2nd IF signal is amplified by the AGC amplifier, then converted to the 1st IF (70MHz). The 1st IF signal is applied to the DEM circuit. The Rx amplifiers are Automatically Gain Controlled (AGC) to maintain the 1st IF output level constant against the big variation of the RF Rx level at the MSTU input. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-17 Table of Contents UMN AGC current of Main 1 channel can be monitored through connector CN34 on the SCSU shelf for testing and maintenance service. The Mixer (MIX) converts the 1st IF signal down to the QAM signal and applies it to the QAM Demodulator Modulate (QAM DEM Module). QAM DEM Module The QAM DEM Module is composed of the QAM demodulator the Analog to Digital Converter (A/D), the Demodulator controller (DEM), the spectrum shaping device and the Transversal Equalizer (TVE) with Decision Feedback Equalizer (DFE). The spectrum shaping device shares spectrum shaping function with the QAM MOD Module of the transmitter side. The TVE with DFE equalizes waveform distortion caused by multi-path fading in the baseband time domain. The radio frame baseband clock signal is recovered from the received IF signal by the QAM DEM Module. The output of QAM DEM Module, the radio frame baseband signal and the clock signal, are sent to the Receive Data Processing (RDP) circuit. RDP The first stage of the RDP is the MLCM decoder. Forward error correction consists in checking redundancy bits contained in the radio frame. Radio parity (RP) bits before error correction, part of the MLCM redundancy bits, are detected to monitor the error performance across the radio section from the modulator to demodulator. Bit Error Ratio of RP deterioration (BER-ALM) is one of the automatic USW operation factors. Another automatic operation factor of the USW is frame synchronization loss (LOF) on the radio frame. The RFCOH is extracted to regenerate the STM-1 signal. The RPS function at the receiver end is performed by the USW. The USW can hitless switch in case of manual operation and most of the automatic operation caused by ordinary fading. MSOH and RSOH drop/insert and AU-Pointer rewriting are carried out. The 8 unipolar signal spreams are converted to an STM-1 CMI signal and sent to the BSW unit of the SCSU. The BSW cannot work in hitless, however, it further isolates the channel to be tested or during system failure. Figure 2-13 shows the main signal flow on STM-1 Electrical Interface equipment. This configuration is used as SE INTF terminal equipment. 2-18 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Figure 2-13 shows the main signal flow of the STM-1 Electrical Interface equipment without SD (Space Diversity). TDP Prot CH USW DUP BPF STM-1 CMI RDP USW STM-1 Electrical In/out Main 1 MOD TX DEM RX BPF MSTU STM-1 CMI TDP USW MOD TX BPF BSW RDP USW DEM RX BPF MSTU Main 2 STM-1 CMI TDP USW MOD TX BSW RDP USW DEM RX BPF BPF MSTU Main 3 STM-1 CMI TDP USW MOD TX BPF BSW RDP USW WS R, S UC(F1) DEM RX BPF MSTU BRU UC(F1) WS R,S To/from Main N STM-1 CMI RUC 1,2 EOW 2W (E1,E2) EOW 4W (E1,E2) OSSI (X25/Q3) Housekeeping DI DO STM-1 Unipolar NOTE : BRU : Branching Network Unit MSTU : Main Signal Transmission Unit SCSU : Supervisory, Control & Switching Unit Figure 2-13 - of Main Signal Flow of STM-1 Electrical Interface Terminal LCT EXT CLK OUT EXT CLK IN EQPT CLK MON SCSU SRT 1F 911-362/02C0000 Issue 1, January 2002 2-19 Table of Contents UMN 2.2.3 Space Diversity As a counter measure to severe propagation path conditions, Space Diversity (SD) reception is provided as standard supply. Enable or disable the SD function is to be set through the LCT. Figure 2-14 shows the diagram of RF/IF section of MSTU applied for SD reception. From SD Antenna To/from Main Antenna DUP MOD MIX IFA LNZ 1st IF LOC DEM MIX IFA LNZ 1st IF LOC DEM MIX MSTU Main 1 MIX HYB IF DADE AMP RXPL AMP MIX MIX AMP MIX FIL MIX MIX EPS MIX MIX MIX AMP BPF RF LOC BPF LNA BPF AMP RXPL AMP BPF LNA TXPLO 2nd IF DELAY EQL MIX EPS IF DADE MSTU Prot MOD HYB FIL TXPLO 2nd IF DELAY EQL MIX MIX RF LOC BPF LNA MIX BPF LNA BRU MOD : Modulator IFA : IF Amplifier LNZ : Linearizer MIX : Mixer as Freq. Converter FIL : Filter AMP : RF Amplifier EPS : Endless Phase Shifter LNA : Low Noise Amplifier HYB : Hybrid as IF Combiner IF DADE : Differential Absolute Delay Equalizer (adjustable) DELAY EQL : Delay Equalizer (adjustable) DEM : Demodulator LOC : Local Oscillator TX/RX PLO : Phase Locked Loop Oscillator Figure 2-14 - Diagram of Space Diversity Reception 2-20 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents The MSTU is equipped with two sets of receiver. One receiver (Main receiver) is connected to the Main antenna (upper) and the other (SD receiver) is connected to the SD antenna (lower). Two receiver outputs are combined together after phase synchronization. Phase synchronization is achieved by controlling the 2nd IF local carrier to SD receiver through the Endless Phase Shifter (EPS). The combining ratio of two receiver outputs is controlled through algorithms to optimize transmission performance. The SD system can improve the Carrier to Noise Ratio (C/N) up to 2 to 3 dB during the stable propagation condition period, and remarkably reduce the possibility of outage due to multi-path fading. 2.2.4 MSTU Front Panel Figure 2-15 shows the front panel of MSTU unit. Table 2.1 shows the functions of MSTU front panel Table 2.1 - Functions of MSTU Front Panel No. Item Function (1) FAN 4 cooling fans for transmitter. (2) FAN PWR Power cable connector for cooling fans (3) POWER ON/OFF DC power supply switch for MSTU unit (4) TX LO MON Monitor terminal for TX local frequency (5) 70M IN 70 MHz test input terminal for IF-IF characteristic measurement (6) REF I/O In/out terminal for RX local reference signal of Co-channel operation OUT (master) or IN (slave) selection is made through the LCT. (7) 70M OUT MN 70M OUT SD 70 MHz test output terminal for IF-IF characteristic measurement of Main/SD antenna reception (8) DADE DADE for Main/SD antenna waveguide length difference (9) D-EQL Delay equalizer for branching network (10) XPIC OUT (master) XPIC output terminal for Co-channel operation Combined IF signal of Main/SD is available at this terminal (11) XPIC IN (slave) XPIC input terminal for Co-channel operation (12) INCR DECR ITEM No. Analog level setting of MSTU (Factory use only) LED indicator Alarm/status indicator : UNIT/RCI LINE Normal = green(*), Unit failure = red on, RCI = red blinking Normal = green(*), Line failure = red on * : Green for mode 2 or Yellow for mode 1 is selectable via the LCT. (13) Keep ITEM No. = 0, and use a LCT terminal for maintenance SRT 1F 911-362/02C0000 Issue 1, January 2002 2-21 Table of Contents UMN FAN (1) FAN PWR (2) ON POWER ON/OFF (3) 70M IN (5) REF I/O (6) MN 70M OUT (7) SD OFF DADE TX F MON (4) (8) D-EQL (9) XPIC OUT (10) XPIC IN (11) INCR DECR Factory use only. ITEM No. for normal operation. (12) ITEM No. must be “ 0 “ UNIT/RCI (13) LINE Figure 2-15 - Front Panel of MSTU unit 2-22 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.2.4.1 Top View of MSTU Adapter RF output/input connectors from/to MSTU unit are located at the top of each MSTU unit. These connectors are mounted on the MSTU plug-in adapter as an intermediate device. Figure 2-16 shows the top view of MSTU adapter. Figure 2-16 - Top View of MSTU SRT 1F 911-362/02C0000 Issue 1, January 2002 2-23 Table of Contents UMN OW/UC/RUC/WS Signal Transmission In addition to the main signal (STM-1 signal), the SRT 1F system can also transmit several auxiliary signals. Some signals are accessible for user’s utilization through the connectors in the Connection area on the SCSU. Some signals are exclusively used by the SRT 1F to control the SRT 1F system itself. This chapter describes auxiliary signals for user’s utilization as follows: Transmitted by STM-1 SOH (Section Overhead) • Two Engineering Orderwires per system • One User Channel per STM-1 • One Wayside Traffic per STM-1 (see 3.4 Wayside Traffic) Transmitted by RFCOH (Radio Frame Complementary Overhead) 2.2.5 • Two User Channels per system • One Wayside Traffic per STM-1 Engineering Orderwire (OW) The SRT 1F provides two engineering orderwires. One is transmitted by E1 byte of RSOH (Regenerator Section OH). The other one is transmitted by E2 byte of MSOH (Multiplex Section OH). Generally, the orderwire from E1 is used as omnibus, and the orderwire from E2 as express. Voice frequency signals of two orderwire from E1 and E2 are independent and have no mutual communication. The orderwires interfacing circuit is the SV unit in the SCSU. The SV unit has two sets of orderwire interface for E1 and E2; 2-wire VF modular socket for telephone set connection and 4-wire VF circuit for the connection to/from other equipment. The SV unit has a common circuit for Dual Tone Multi Frequency (DTMF) function and LED/Buzzer for station calling. The RF channel to transmit orderwires is software settable. Orderwires are RPS (USW) protected. 2-24 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents MSTU Prot Telephone set 2W VF(E2) To/from Other Equipment E1 VF(E1) SV unit in SCSU E1 Software selection E2 E2 MSTU Main 1 To/from Other Station E1 MSTU Main 2 E2 VF(E1) E1 4W VF(E2) E2 MSTU Main N Figure 2-17 - Signal Flow of Orderwire 2.2.6 User Channel (UC) A 64 kb/s User Channel (UC) per RF channel is prepared for user’s data communication. This user channel is transmitted through byte F1 of the RSOH. The user channel interfacing circuit is the multi-pin connector in the connection area of SCSU. User Channels are RPS (USW and BSW) protected. MSTU Prot In/Out port 64 kb/s Main 1 Main 2 Main N BSW units in SCSU Main 1 Main 2 Main N MSTU Main 1 Prot To/from Other Stations Main 1 Main 2 Main N Figure 2-18 - Signal Flow of User Channel (F1) SRT 1F 911-362/02C0000 Issue 1, January 2002 2-25 Table of Contents UMN 2.2.7 Radio User Channel (RUC) Two Radio User Channels (RUC) per system are provided to transmit voice frequency signals (VF) or 64 kb/s data for user’s utilization. The RUCs are transferred by the Radio Frame Complementary OH. Two RUC channels are transmitted by the Main 1 and Protection channel in parallel for duplication. At the receive side, one of the RUC sets is selected VF or 64 kb/s digital interface is selectable through the sub-modules on the SV unit. In/out port RUC #1, #2 MSTU Prot VF/64 kb/s #1 VF/64 kb/s #2 Prot SV unit in SCSU To/from Other Station MSTU Main 1 Main 1 RUC #1, #2 Figure 2-19 - Radio User Channel Signal Flow 2-26 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.2.8 Wayside Traffic (WS) The SRT 1F system is provided to transmit two Wayside Traffics (WS, 2.048 Mb/s each) per STM-1 for local traffic transfer. One of two Wayside traffics (WS SOH) is transmitted by the undefined national usage byte of SOH. Another Wayside traffic (WS RFCOH) is transmitted by the Radio Frame Complementary Overhead. The interface circuit of Wayside traffics (WS SOH and WS RFCOH) is the BSW (Bipolar Switch) unit on the SCSU. Input/output port connectors are located on the front panel of the BSW unit (for 75 ohms unbalance), and in the Connection Area of the SCSU (for 120 ohms balance). The input/output port interface features hardware set. Wayside signals are RPS (USW and BSW) protected. MSTU Prot Prot MSTU Main 1 Main 1 WS (SOH) BSW Main 1 WS (RFCOH) To/from Other Station WS (SOH) BSW Main 2 MSTU Main 2 WS (RFCOH) Main 2 WS (SOH) BSW Main N MSTU Main N Main N WS (RFCOH) Figure 2-20 - Wayside Traffic Signal Flow SRT 1F 911-362/02C0000 Issue 1, January 2002 2-27 Table of Contents 2.2.9 UMN Digital Communication Channel (DCC) Digital Communication Channels (DCCs) are provided for the Synchronous Equipment Management Function (SEMF) signal transmission. The DCC, is detailed in chapter “2.6.6 Embedded Communication Unit”. 2-28 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.3 OverHead Bit Access for SRT 1F System The SRT 1F uses three kinds of overhead bit to transfer the signals for system supervise/control and user’s utilization. In addition to the Multiplex Section Overhead (MSOH) and Regenerator Section Overhead (RSOH) of STM-1 frame, the Radio Frame Complementary Overhead (RFCOH) is provided between two MSTUs across a radio section. Figure 2-21 shows access points of MSOH, RSOH and RFCOH. SDH Radio System Terminal Back to back terminal Terminal Radio Frame Radio Frame MS MS MS MS RFCOH RSOH MSOH RFCOH RSOH MSOH RFCOH RSOH MSOH Figure 2-21 SRT 1F 911-362/02C0000 Issue 1, January 2002 2-29 Table of Contents 2.3.1 UMN MSOH and RSOH The Multiplex Section Overhead (MSOH) and Regenerator Section Overhead (RSOH) are compatible with SDH optical fiber systems in accordance with ITU-T G. 707. The MSOH are drop/inserted at the terminal stations of the multiplex section. The RSOH are drop/inserted at the terminal stations of the multiplex/regenerator section. Figure 2-22 shows the STM-1 frame format and overhead bit assignment. Table 2.2 shows the function of MSOH, RSOH, Pointer and Path Overhead (POH). 270 Bytes 9 Bytes RSOH 9 Rows Payload Pointer MSOH RSOH Pointer MSOH A1 B1 D1 H1-1 B2 D4 D7 D10 S1 A1 WS WS H1-2 B2 WS WS WS Z1 A1 WS WS H1-3 B2 WS WS WS Z1 A2 E1 D2 H2-1 K1 D5 D8 D11 Z2 A2 A2 WS H2-2 WS WS WS WS Z2 H2-3 WS WS WS WS M1 J0 F1 D3 H3-1 K2 D6 D9 D12 E2 WS WS H3-2 WS WS WS WS WS WS WS H3-3 WS WS WS WS WS MSOH, RSOH and Pointer WS J1 B3 C2 G1 F2 H4 Z3 Z4 Z5 POH : Wayside traffic transmission by Radio specific usage byte and National usage byte : Reserved for future international standardization Figure 2-22 - STM-1 Frame Format Construction 2-30 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Table 2.2 - Main Function of Section Overhead (ITU-T G.707) Overhead SOH Pointer Byte Abbr. Usage A1, A2 Framing D1 to D12 Data Communication Channels J0 E1, E2 Regenerator Section Trace Orderwire F1 User channel B1 BIP-8 B2 BIP-24 K1, K2 APS channel S1 Synchronous status M1 Far end block error Z1, Z2 H1 to H3 Spare Pointer bit Function 6 bytes are used for STM-1 frame synchronization. The pattern is A1A1A1A2A2A2 to each STM-1 frame, A1 = 11110110, A2 = 00101000 12 bytes are used for Telecommunication Management Network (TMN). D1 to D3 are communication for Regenerator Section. D4 to D12 are communication for Multiplex Section. One byte is unique number assigned to an STM-1 signal for identification in aggregated STM-N level. Two bytes are used for voice frequency transmission as engineering orderwire. E1 are communication for Regenerator Section. E2 are communication for Multiplex Section. One byte is reserved for user purposes. A User Channel (SOH) is to be transmitted. Bit Interleaved Parity 8 One byte is used to monitor the error performance of the Regenerator Section. Bit Interleaved Parity 24 Three bytes are used to monitor the error performance of the Multiplex Section. Two bytes are allocated for Multiplex Section Protection (MSP) switching control. One byte is used for quality control of the synchronous clock signal. One byte is allocated to transmit the block error information to the far end. Four bytes are reserved as spare. Administration Unit (AU) pointer bits are used for Section Adaptation (SA). SS bit Sending side H1 : 00/10/01/11 selectable Y1 (H1#2) : same as H1 Y2 (H1#3) : same as H1 Receiving side H1 : 00/10/01/11 selectable Y1 (H1#2) : XX (no use) Y2 (H1#3) : XX (no use) Note: H1 is set to the same value for both the sending and receiving sides. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-31 Table of Contents 2.3.2 UMN RFCOH The SRT 1F organizes the Radio Frame for the transmission between two Main Signal Transmit Units (MSTU) across a radio section. The Radio Frame is composed of the STM-1 signal and Radio Frame Complementary Overhead (RFCOH). The Radio Frame has two types of configuration based on the modulation system, 64 QAM and 128 QAM. • 64 QAM : 6 streams at 28.512 Mb/s • 128 QAM : 7 streams at 24.192 Mb/s The Radio Frame Complementary Overhead (RFCOH) transfer two classes of signals and a number of dummy bits. One is exclusively for internal use to monitor/control the SRT 1F system, and the other is for user’s utilization. Signals for SRT 1F system internal use: • FA : Frame Alignment bit to maintain the frame synchronization of radio frame (36 bits = 288 kb/s for 64 QAM, 42 bits = 336 kb/s for 128 QAM ). • C1 : Redundancy bit for the Multi Level Coded Modulation (MLCM) level 1 (1184 bits = 9472 kb/s for 64 QAM, 1004 bits = 8032 kb/s for 128 QAM). • C2 : Redundancy bit for the Multi Level Coded Modulation (MLCM) level 2. Radio parity for the error performance across radio section before error correction is checked through this signal (296 bits = 2368 kb/s for 64 QAM, 251 bits = 2008 kb/s for 128 QAM). • BSCS (RSC*): Baseband Switch Control Signal to control the Radio Protection System (RPS) (32 bits = 256 kb/s). • RID1 to RID4 : Route identifier for radio section (4 bits = 32 kb/s). • ATPC : Automatic Transmit Power Control signal (6 bits = 56 kb/s) • 1BE/X1BE : Transfer bit for 1 Bit Error (2 bits = 16 kb/s). • FMS/XFMS : (2 bits = 16 kb/s). • OOS/XOOS : Transfer bit for Out of Service (OOS) (2 bits = 16 kb/s). Transfer bit for Frequency Measurement Signals for user’s utilization • WSRF : Wayside traffic by RFCOH (264 bits = 2112 kb/s) • RUC (RSC*) : Radio User Channel (16 bits = 128 kb/s) Note: RSC* (Radio Service Channel, 108 bits = 864 kb/s ) is composed of BSCS, RUC, spare bits and stuff bits for redundant transmission by the Main 1 and Protection channel only. Figure 2-23 shows the Radio Frame structure. 2-32 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Total 171.072 Mb/s 15.552 Mb/s STM-1 155.520 Mb/s S O H RFCOH 148 words 1776 bits 6 bits 3564 bits (28.512 Mb/s) per line 6 bits st S6 S5 S4 S3 Frame Alignment Bits S2 S1 àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à à à à X2à à C2 à à C1à à C1à à C1à à C1 2 Sub-frame à …à à à à à …à à à à à …à à à à à …à à à à à …X2à à C2 à …C1à à C1 1st word (12 bits) 6 bits 148 words 1776 bits nd 1 Sub-frame S6 to S1 RFCOH (Radio Frame Complementary Overhead) and STM-1 frame are mapped to compose the Radio Frame as below. Payload 1st to 82nd word (984 bits) àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à X1à à X2à à C2 à à C1à à C1à à C1à à C1 à …à à à à à à à à …à à à à à à à à …à à à à à à à à …à à à à à à à à …X1à à X2à à C2 à …C1à à C1à à C1 83rd word (12 bits) 83rd to 148th word (792 bits) Note: à : STM-1 signal (Payload, RSOH, MSOH and Pointer) C1 : Redundancy bit for MLCM level 1 C2 : Redundancy bit for MLCM level 2 X1 : RSC (BSCS, RUC and dummy bits), FMS/XFMS, OOS/XOOS and RID1 to RID4 Transmitted by 83rd to 148th word of each sub-frame. X2 : Wayside traffic (WS RFCOH), 1BE/X1BE and ATP Transmitted by 1st to 148th word of each sub-frame Figure 2-23 - Radio Frame Structure of 64 QAM modulation SRT 1F 911-362/02C0000 Issue 1, January 2002 2-33 Table of Contents UMN Total 169.344 Mb/s 13.824 Mb/s STM-1 155.520 Mb/s S O H RFCOH RFCOH (Radio Frame Complementary Overhead) and STM-1 frame are mapped to compose the Radio Frame as below. Payload 3024 bits (24.192 Mb/s) per 6 bits 6 bits 126 words 1512 bits st S7 to S1 125 words 1500 bits nd 1 Sub-frame 2 Sub-frame 1st Sub-frame S7 S6 S5 S4 Frame Alignment bits S3 S2 S1 àààààààààààà àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à à à à X2à à C2 à à C1à à C1à à C1à à C1 à …à à à à à …à à à à à …à à à à à …à à à à à …à à à à à …X2à à C2 à …C1à à C1 1st word (12 bits) 6 bits àààààààààààà àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à X1à à X2à à C2 à à C1à à C1à à C1à à C1 à …à à à à à à à à …à à à à à à à à …à à à à à à à à …à à à à à à à à …à à à à à à à à …X1à à X2à à C2 à …C1à à C1à à C1 37th word (12 bits) 1st to 36th word (432 bits) 37th to 126th word (1080 2nd Sub-frame S7 S6 S5 S4 Frame Alignment bits S3 S2 S1 àààààààààààà àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à à à à X2à à C2 à à C1à à C1à à C1à à C1 à …à à à à à …à à à à à …à à à à à …à à à à à …à à à à à …X2à à C2 à …C1à à C1 1st word (12 bits) 6 bits 1st to 35th word (420 bits) àààààààààààà àààààààààààà àààààààààààà àààààààààààà àààààààààààà à à à à à X1à à X2à à C2 à à C1à à C1à à C1à à C1 à …à à à à à à à à …à à à à à à à à …à à à à à à à à …à à à à à à à à …à à à à à à à à …X1à à X2à à C2 à …C1à à C1à à C1 36th word (12 bits) 36th to 125th word (1080 Figure 2-24 - Radio Frame Structure of 128 QAM modulation 2-34 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Note: à : STM-1 signal (Payload, MSOH, RSOH and Pointer) C1 : Redundancy bit for MLCM level 1 C2 : Redundancy bit for MLCM level 2 X1 : Wayside traffic (WS RFCOH), RSC (BSCS, RUC and dummy bits), FMS/XFMS, OOS/XOOS, RID1 to RID4,1BE/X1BE and ATPC Transmitted by 37th to 126th word of the 1st sub-frame and 36th to 125th word of the 2nd sub-frame. X2 : Wayside traffic (WS RFCOH). Transmitted by all words of each sub-frame. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-35 Table of Contents UMN 2.4 Radio Protection Switch System The SRT 1F is equipped with the Radio Protection Switch system (RPS) to improve signal transmission reliability. Automatic protection switch intervenes in case of equipment failure and degradation of the propagation condition. Manual switching is implemented for testing and maintenance operation purposes. 2.4.1 Outline of Radio Protection Switching Protection Ratio One protection channel is provided for each switching group. • Alternated operation : One group (RPS 1 = Group 1) having 7 + 1 protection • Co-channel operation : Two groups (RPS 1 = Group 1 and RPS 2 = Group 2) having 7 + 1 protection each. Maximum number of main channels is limited by the frequency band being utilized (maximum 7 main channels per group). Switching Device The Radio Protection System has two switch, bipolar switch (BSW) and unipolar switch (USW) stages. Figure 2-25 shows the outline of the Radio Protection System. Prot MSTU (USW) MSTU (USW) BSW MSTU (USW) MSTU (USW) BSW MSTU (USW) MSTU (USW) BSW MSTU (USW) MSTU (USW) Main 1 BB INTF Main 2 BB INTF Main 3 BB INTF To/from Main N Unipolar signal To/from Main N STM-1 CMI signal Prot Main 1 BSW BB INTF Main 2 BSW BB INTF Main 3 BSW BB INTF To/from Main N Unipolar signal To/from Main N STM-1 CMI signal : Bipolar signal (CMI) line : Unipolar signal (19.44 Mb/s X 8) line BB INTF : Optional BB INTF unit (OPT INTF) Figure 2-25 - Radio Protection System 2-36 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Switching Section The switching section of the Radio Protection System consists of two facing SRT 1F equipment. Figure 2-26 shows the RPS switching section. Terminal A Back to back Terminal B USW MSTU MSTU USW Terminal C USW MSTU MSTU USW BB INTF BSW USW MSTU MSTU USW BSW BSW USW MSTU MSTU USW BSW BB INTF BB INTF BSW USW MSTU MSTU USW BSW BSW USW MSTU MSTU USW BSW BB INTF Unipolar CMI To/from Main N Unipolar Unipolar CMI CMI To/from Main N Switching section A to B Unipolar CMI To/from Main N Switching section B to C Figure 2-26 - Switching Section OW/UC/WS Signal The Radio Protection Switching of Orderwire, User Channel by SOH and Wayside traffic by SOH/RFCOH depends on the operation of STM-1 main signal. Co-channel Operation In case of Co-channel operation, two independent Radio Protection Switching groups (RPS 1 and RPS 2) are configured according to the system requirement. RPS 1 and RPS 2 operate independently, and there is no mutual protection switching between two groups. Human Machine Interface (HMI) The switching status and manual switch operation are supervised through the local terminal, LCT. There is no display/control panel equipped on the SRT 1F. The LCT can supervise/control all SRT 1F equipment (NE = Network Element) within a Digital Communication Channel (DCC) group connecting the local terminal. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-37 Table of Contents 2.4.2 UMN USW and BSW The Radio Protection System has two switch, bipolar switch (BSW) and unipolar switch (USW) stages. USW (Unipolar Switch) The USW is a part of the digital transmit/receive processor of MSTU. This switch can hitless switch between protection and any of the main channels through automatic baseband DADEing. Protection switching on fade is carried out by this USW. Fading and equipment failure on the MSTU RF/IF stage are detected as BER ALM or F LOSS at the receiving end to initiate automatic RPS operation. • Signal level : 8 streams of 19.44 Mb/s, Unipolar • Direction : Uni-directional Auto revertive • Initiator Loss of frame alignment (F LOSS) : Signal degrade (BER ALM) BSW (Bipolar Switch) One BSW unit per main channel is mounted in the SCSU (Supervisory Control & Switching Unit). This switch cannot hitless switch because of the signal level (bipolar) and of the switching device (high-speed mechanical relay). BSW automatic protection switching is mainly determined by equipment failure. Manual protection switching is also a non hitless switching but can safely isolate a specific main channel from traffic transmission, for testing and troubleshooting purposes. • Signal level : STM-1, CMI (Coded Mark Inversion) • Direction : Bi-directional Auto revertive • Initiator : MSTU equipment alarm MSTU line failure alarm MSTU power supply failure Figure 2-27 and Figure 2-28 shows the function of USW and BSW. 2-38 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Terminal A BB INTF BB INTF BSW BSW Back to back Terminal B USW TX RX USW USW TX RX USW USW RX TX USW USW RX TX USW BSW BSW BSW BSW Terminal C USW TX RX USW USW TX RX USW USW RX TX USW USW RX TX USW BSW BB INTF BSW BB INTF Propagation failure Following propagation failure of Main 1 from Terminal B to Terminal A, USWs (shaded) of one direction from B to A of Main 1 operate as shown above. Other switches are not affected at all. Figure 2-27 - Automatic Operation of USW Terminal A BB INTF BB INTF BSW BSW Back to back Terminal B USW TX RX USW USW TX RX USW USW RX TX USW USW RX TX USW BSW BSW BSW BSW Terminal C USW TX RX USW USW TX RX USW USW RX TX USW USW RX TX USW BSW BB INTF BSW BB INTF Equipment Failure Following equipment failure of Main 1 Terminal A (MSTU receiver), BSWs (shaded) of both directions B and A of Main 1 operate as shown above. Figure 2-28 - Automatic Operation of BSW SRT 1F 911-362/02C0000 Issue 1, January 2002 2-39 Table of Contents 2.4.3 UMN Switching Priority The following is the priority order of Radio Protection Switching;Table 2.3 - Priority Order of RPS Operation Priority Switching Description st LOCKOUT Inhibits any type of RPS operation nd FORCED Switch over to Prot CH unless the specified Main CH or Prot CH is locked out. (* Not effective in case of Prot CH error) rd AUTOMATIC The Main CH will be switched over to Prot CH, if Prot CH is free and normal. 1 2 3 The priority order of automatic switching is listed below. th MANUAL The traffic will be switched over to Prot CH by the command through LCT, if Prot CH is free and normal. th OCC Occasional traffic transmission (option) 4 5 The lowest priority traffic is allowed to be transferred by Prot CH when Prot CH is free and normal. Table 2.4 - Priority Order of Automatic Protection Switching Priority Highest Switching operation BSW operation of Priority CH (default = Main 1) BSW operation of the first incoming channel BSW operation of the second incoming channel USW operation by F LOSS (Radio Frame Loss) of Priority CH (default = Main 1) USW operation by F LOSS (Radio Frame Loss) of the first incoming channel USW operation by F LOSS (Radio Frame Loss) of the second incoming channel USW operation by BER ALM of Priority CH (default = Main 1) USW operation by BER ALM of the first incoming channel Lowest 2-40 USW operation by BER ALM of the second incoming channel SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.4.4 Switching Initiator and Operation Time Automatic protection of RPS is initiated by;• Signal Failure : Frame alignment loss (F LOSS) of the Radio Frame • Signal Degrade: Bit Error Ratio Alarm (BER ALM) of radio parity before forward error correction. Signal Failure (F LOSS alarm) F LOSS alarm is initiated within 3 m seconds after frame synchronization loss and recovered within 3 m seconds after establishing synchronization. Signal Degrade The threshold level of BER ALM can be set through the LCT. Table 2.5 shows the setting position and time to initiate/recover of BER ALM. Default setting is “ 2 “. Table 2.5 - BER ALM Initiation Setting and Time to Initiate/Restore Setting BER ALM Initiation before Error correction 1 X 10 –3 3 4 BER after Error correction 5 X 10 -7 5 X 10 –4 6 X 10 -8 1 X 10 –4 3 X 10 -10 5 5 X 10 –5 4 X 10 -11 6 1 X 10 –5 7 8 2 Time to Initiate (maximum) ALM Restoration before Error correction 6 X 10 -5 4 ms 0.5 ms 3 X 10 -5 8 ms 2.5 ms 6 X 10 -6 40 ms 5.0 ms 3 X 10 -6 80 ms 25.0 ms 6 X 10 -7 400 ms 800 ms 4000 ms 0.25 ms 1 X 10 -12 5 X 10 –6 1 X 10 -12 less 50.0 ms 3 X 10 -7 1 X 10 –6 1 X 10 -12 less 250.0 ms 6 X 10 -8 less Time to Restore (average) Switching Time Without occasional traffic: Less than 5 ms plus BER ALM detecting time and control signal propagation time. With occasional traffic: Less than 9.5 ms plus BER ALM detecting time and control signal propagation time. DADE (Differential Absolute Delay Equalizer) Automatic DADE (± 3 bits) functions to automatically synchronizes two baseband signals transmitted by a Main CH and Prot CH when having to carry out protection switching. Manual DADE (0 to 31 bits): compensates the baseband signal path difference between each Main CH and Prot CH. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-41 Table of Contents UMN Wait to Restore (WTR, option setting) Delay time from the detection of BER ALM restoration up to releasing protection switching is available to eliminate unnecessary RPS operation when the propagation condition is unstable. If other channels fail during the WTR period, the WTR will be canceled immediately and Prot CH is taken over by the newly failed channel. 2.4.5 Occasional Traffic (option) The lowest priority traffic can be transmitted by Prot CH when all channels are normal. If a channel fails, the occasional traffic will be immediately disconnected to remove traffic from the main failed channel. Extra OCC INTF and OPT INTF unit are required for occasional traffic transmission. 2-42 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.5 Supervisory, Control & Switching Unit (SCSU) The SRT 1F equipment is equipped with a Supervisory, Control & Switching Unit (SCSU) for each switching group. The main function of SCSU is: • Interfacing the STM-1, Orderwire, User Channel, Wayside and Digital Communication Channel. • Interfacing the Local Terminal and Network Management System. • Interfacing the External Timing Clock Source. • Perform Radio Protection Switching (RPS) at bipolar (CMI) level. • Retrieve/register alarm/status data for protection control and indication. • Retrieve/register Performance Monitoring data. • Control the Radio Protection Switching unipolar signal level. • Control the Multiplex Section Protection (MSP for STM-1 MS optical interface only). • Provide Orderwire functions. • Administrate the Timing Clock Synchronization. • Relay Housekeeping (External) supervisory/control signal. • Register the NE setting (provisioning) data. System at bipolar and The SCSU is composed of following units: BSW : Bipolar Switch unit for each main channel SV : Supervisory unit TCU HK (1) : Timing Control Unit (2) ECU : Housekeeping unit (3) : Embedded Communication Unit OCC INTF (4) : Occasional Traffic Interface unit BSW INTF (5) : Baseband Switch Interface unit Note: (1) : Card protection (X and Y) is available as option. (2) : Option, maximum 2 units can be installed. (3) : Option, maximum 2 units can be installed. (4) : Option, one unit will be installed for occasional traffic use. The unit should be insert in the slot next to the BSW of the last working channel. (5) : Option, one unit will be installed for RPS 2 (Group 2) control Figure 2-29 shows the functional block diagram of SCSU. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-43 Table of Contents UMN BSW units Main 1 to n M1 M2 MSTU units Mn Prot M1 M2 Mn STM-1 CMI ♣ WS X 2 UC X 1 To/from Prot & M1 To/from all MSTUs EXT CLK IN EQPT CLK OUT TCU HK ALARM IN HK CONTROL OUT HK* DCC IN DCC OUT To/from all MSTUs SCSU SV unit ECU* LCT SV sub-unit LAN/X25 for RPS 2 HK IN/OUT To/from RPS 2 DCC IN/OUT VF/DGTL Radio UC X 2 OW (2W VF) X 2 OW E1,E2 OW (4W VF) X 2 * Note: HK and ECU are option BBIU BBC Main 1 to n OPT in/out To/from STM-1 CMI In/out of BSW ♣ BB MSP SW Figure 2-29 - Diagram of SCSU Function 2-44 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.5.1 Signal Interface STM-1 Electrical Interface and Wayside traffic 75 ohms unbalanced connectors are located on the front panel of the BSW unit. 120 ohms balanced connectors for Wayside traffic and other signals are located in the Connection Area of SCSU. Interface connector pin assignment is shown in par. “3. Installation” of this manual. 2.5.2 Bipolar Switch (BSW) unit A Bipolar Switch (BSW) unit is provided for each main channel. The STM-1 Electrical (CMI) signals to/from other equipment are interfaced through this BSW unit. In case of Optical interface, the signals converted to STM-1 CMI signal by the BBIU (Baseband Interface Unit, optional) interface this BSW unit. The BSW unit simultaneously switches the following signals: • An STM-1 CMI signal • Wayside Traffics (SOH and RFCOH), a User Channel (SOH) The bipolar switch operation is not hitless and produces some data loss, however, it safely isolates the channel. 2.5.3 Supervisory (SV) unit An SV unit is provided for each SRT 1F equipment to supervise/control the Radio Protection system. To control two RPS groups (RPS 1= group 1 and RPS 2 = group 2), the SV unit must be equipped with a sub-unit for RPS 2 control. The main function of SV unit is: • Terminate Orderwires, User Channels and DCCs. • Interface the Local Terminal, Network Management System (X.25) and ethernet. • Retrieve/register alarm/status data for protection control and indication. • Retrieve/register Performance Monitoring data. • Control the RPS at bipolar and unipolar signal level. • Control the MSP (for STM-1 MS optical interface only). • Provide Orderwire functions. • Register the NE setting (provisioning) data. • Relay Housekeeping (8 item input and 4 item output) Figure 2-30 shows LEDs switches and connectors of SV unit. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-45 Table of Contents UMN SV UNIT/RCI LINE MISC ACS/SWDL BACK UP NORM CR/MJ/RCI MN/WR MAINT CARD OUT ACO LAN CALL E1 2W E1 X25/BTB CALL E2 ACO SW 2W E2 LED TEST LED Indicator D-sub 9 (f) Push SW Dip switch Modular Jack Figure 2-30 - Front View of SV unit 2-46 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Table 2.6a - LED, Switch and Connector of SV unit (1/3) LED Indication Group LED Color Status Description Indication for SV unit UNIT/RCI Red Steady on Unit failure of SV unit Log memory threshold crossed Blinking RCI (Remote Card Identifier) of SV unit Green (Y) Steady on Normal operation of SV unit Yellow (G) Blinking Configuration mismatch of SV unit Red Steady on SINT/ RSC/DCC signal failure Green (Y) Steady on SINT/ RSC/DCC signal normal MISC Red Steady on Housekeeping alarm (DI) on ACS/SWDL Green (Y) Steady on NE is logged on by user Red Steady on Mismatch of software version Yellow (G) Blinking Software download is on progress BACK UP Yellow (G) Steady on Back up of setting data is on progress NORM Green (Y) Steady on Normal operation of NE CR/MJ/RCI Red Steady on CR/MJ alarm of any unit in NE Blinking RCI (Remote Card Identifier) of any unit in NE LINE Indication for NE Orderwire Note : MN/WR Red Steady on MN/WR alarm of any unit in NE MAINT Yellow (G) Steady on Maintenance condition of NE CARD OUT Red Steady on CARD OUT alarm of NE more serious than WR Yellow (G) Steady on CARD OUT alarm of NE not more serious than WR ACO Yellow (G) Steady on Alarm cut off of NE CALL E1 Green (Y) Blinking E1 orderwire is being called CALL E2 Green (Y) Blinking E2 orderwire is being called Green (Y) = Green for LED mode 2, Yellow for LED mode 1. Yellow (G) = Yellow for LED mode 2, Green for LED mode 1. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-47 Table of Contents UMN Table 2.6b - LED, Switch and Connector of SV unit (2/3) Switch Control Switch Part No. Type Description ACO SW SW A2 Push Alarm cut off LED TEST SW A3 Push LED test SV CPU TEST SW B2 Push Factory use UL RESET SW A1 Push Factory use ------ SW A1 Dip Factory use Tablr 2.6c - LED, Switch and Connector of SV unit (3/3) Connector Function Connector Part No. Type Description E1-2W CN 17 Modular E1 orderwire 2-wire telephone E2-2W CN 18 Modular E2 orderwire 2-wire telephone CN 71 Multi-pin LCT (Local Terminal) connector LAN CN 91 Modular LAN connector ------ CN 41 Multi-pin Factory use ------ CN 21 Multi-pin Factory use ------ CN 51 Multi-pin Factory use LED Indication The SV unit displays indicate a summary of the alarms/status conditions on the SRT 1F equipment (NE) as shown on the 2-48 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Table 2.6. Detailed LED indications are available on each unit. Orderwire Function Two fully independent orderwires, E1 and E2 are provided. To use an orderwire, connect an ordinary 2-wire telephone set to E1-2W or E2-2W modular jack. The station is selectively called through the telephone key-pad. Individual station call: Station group call: Press #, Group No., Station No. Press #, Group No., * * ( 2 asterisks) 4-wire VF in/out ports are provided for the connection to/from other equipment. Housekeeping (HK) 8 items of HK alarm input and 4 items of HK control output are available as standard supply. Digital Communication Channel (DCC) A DCC line can be transmitted by the Main 1 channel and Protection channel. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-49 Table of Contents UMN 2.5.4 Timing Control Unit (TCU) A Timing Control Unit (TCU) is provided for each SRT 1F equipment. The Supervisory, Control & Switching Unit (SCSU) provides an extra slot and automatic/manual switching facilities for TCU unit protection (X and Y) as option. The TCU accepts the synchronization timing clock signal from three (3) STM-1 lines and/or two (2) external clock inputs (2.048 MHz or 2.048 Mb/s), then regenerates the clock signal to supply to the NE and external clock output port. The TCU generates the clock signal internally (Holdover mode and Internal mode) in case of signal source input loss. For detailed application, see “2.8.2 Synchronization”. 2.5.5 Housekeeping (HK) unit The SV unit can accommodate 8 items of Housekeeping (HK) input and 4 items of HK output. To increase Housekeeping (HK) in/out items, a maximum of two HK units can be installed as option. Number of item HK input (DI) HK output (DO) SV unit only 8 4 SV unit + HK 1 40 20 SV unit + HK 1 + HK 2 72 36 SRT 1F equipment Housekeeping input (DI) 6.4 k Photo coupler Other equipment L -48 V (-38.4 to –57.6 V) 0.3 mA to 11.3 mA Housekeeping output (DO) L Max. I = 100 mA Max. V = DC 110 V Relay L Figure 2-31 - Housekeeping in/out (DI/DO) Interface 2-50 SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents 2.5.6 Embedded Communication Unit (ECU) (option) The SV unit terminates a Digital Communication Channel (DCC) by using Main 1 channel. To increase the number of DCC lines, a maximum of two ECU units can be installed as option, the ECU 1 for RPS group 1 and the ECU 2 for group 2. An ECU terminates maximum 8 DCC lines. RSDCC (Radio) SV unit RSDCC (Line) MSTU (RPS 1 - M1) Prot MSDCC (Line) RSDCC (Line) Max. 6 ECU 1 unit RSDCC (Radio) M2 MSTU (RPS 1 - M2) M4 M5 M6 M7 GP1 - M n (“n” is selectable) M1 RSDCC (Line) Max. 7 ECU 2 unit M3 MSTU (RPS 2 - M1) M2 M3 M4 M5 M6 M7 Figure 2-32 - Configuration of DCC Lines with ECU 2.5.7 Occasional Interface (OCC INTF) unit (option) An OCC INTF unit will be installed for optional occasional traffic transmission through the protection channel. The OCC INTF provides STM-1 CMI interface and should be insert in the slot next to the BSW of the last working channel. For example, in the system type 3+1 the OCC INTF should be equipped in the slot W4-BSW. The OCC INTF slot will be used in the fully equipped system type (7+1) only. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-51 Table of Contents UMN 2.5.8 Baseband Switch Interface (BSW INTF) unit (option) A BSW INTF unit will be installed on the 2nd SCSU to control the BSW units of the RPS 2 group. The BSW INTF relays control command and response signals between the SV unit on the 1st SCSU, and the BSW units on the 2nd SCSU. 2.6 Baseband Interface Unit (BBIU) The STM-1 Electrical interface (SE INTF) is the standard baseband interface of the SRT 1F equipment. The equipment is composed of a BRU (Branching Network Unit), MSTUs (Main Signal Transmission Unit) and a SCSU (Supervisory, Control & Switching Unit). The BBIU (Baseband Interface Unit) is optionally available for other type of interface, OPT INTF MS/RS (Optical Interface for Multiplex Section and Regenerator Section). The main function of the BBIU is to: • Provide STM-1 Optical baseband interfacing. • Perform the Multiplex Section Protection (MSP) for OPT INTF (MS). The BBIU is composed of following units: * OPT INTF 1 ** : Optical Interface 1 for 0 to 15 Km OPT INTF 2 ** : Optical Interface 2 for 15 to 40 Km MSPSW : Multiplex Section Protection Switch for OPT INTF BBC : BBIU Controller [Note] * : An applicable baseband unit should be selected for each channel. Any combination of different types of interface cannot be configured. ** 2.6.1 : Type of OPT INTF must be selected according to fiber optic length. See Table 2.7. Optical Interface (OPT INTF) unit The main function of OPT INTF is to: 2-52 • Convert the STM-1 signal from optical to electrical (CMI) and electrical to optical. • Drop/insert Orderwires, a User Channel and Digital Communication Channels (*). • Drop/insert Section Overhead (SOH); B1,B2, J0, K1, K2, S1 and SSMB (*). • AU-4 pointer processing for radio section(*). • Check Frame alignment of the STM-1 signal (*). SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents • Descramble/scramble the STM-1 signal (*). • Recover/retime clock synchronization (*). • Provide baseband loop back on the line and radio sides (*). Note: * marked functions of MSTU are canceled if the BBIU is installed. Two types of OPT INTF are provided according to fiber optic length. Table 2.7 shows the characteristics of each OPT INTF unit. Table 2.7 - Characteristics of OPT INTF Unit OPT INTF 1 OPT INTF 2 S-1.1 L-1.1 0 - 15 Km 15 - 40 Km 1260 - 1360 1280 – 1335 MLM MLM 7.7 4.0 - Maximum -20 dB width (nm) - - - Minimum side mode suppression ratio (dB) - - - Maximum (dBm) -8 0 - Minimum (dBm) -15 -5 Minimum extinction ratio (dB) 8.2 10 0 -12 10 – 28 Maximum dispersion (ps/nm) 96 185 Minimum optical return loss of cable point at S, including connectors (dB) NA NA Maximum discrete reflectance between S & R (dB) NA NA Minimum sensitivity (dBm) -28 -34 Minimum overload (dBm) -8 -10 Maximum optical path penalty including chirp and dispersion (dB) 1 1 NA NA Application code (ITU-T G.957) Typical hop Operation wavelength range (nm) Transmitter at reference point S Source type Special characteristics - Maximum RMS width (nm) Mean launched power Optical path between S and R Attenuation range (dB) Receiving at reference point R Maximum reflectance of receiver, measured at R (dB) Connector Bit rate ITU-T Recommendation Reference SRT 1F 911-362/02C0000 Issue 1, January 2002 SC type or FC type STM-1 : 155.520 Mb/s 20 ppm ITU-T G.957 Table 2 and G.703 2-53 Table of Contents UMN The baseband signal converted to STM-1 CMI is applied to the Bipolar Switch (BSW) unit of SCSU via the MSPSW unit. Figure 2-34 shows the diagram of the Optical Interface terminal without MSP. Multiplex Section Protection (MSP) To increase the reliability of the fiber optic line, the Multiplex Section Protection (MSP) on the line side is provided as option. Figure 2-33 shows the functional diagram of MSP. SDH Optical Terminal DSTR INTF SRT 1F Radio Terminal (OPT INTF MSP) STM-1 Optical line OPT INTF (X) INTF BSW SEL Line X SEL MSPSW MSTU STM-1 CMI input OPT INTF (Y) Line Y DSTR STM-1 CMI output Figure 2-33 - Function of Multiplex Section Protection (MSP) Features of MSP operation are as follows: Protection ratio : 1+1 Signal level : STM-1 Electrical unipolar by IC gate Operation mode : Bi-directional/uni-directional (selectable) Non revertive Initiator : Signal Fail (SF) - Loss of STM-1 frame synchronization - Loss of optical signal input - Multiplex section AIS Signal Degrade (SD) - BER : 10-3 (SF or SD), 10-5 to 10-9 - PM : STEP (SD or SF) FESP, TESP, FSEP, TSEP K1 control signal from the far end station 2-54 Switching time : Less than 50 ms plus alarm detection time Priority order : Lockout > Forced > Auto (SF) > Auto (SD) > Manual Lock-in parameter : Switching count, Monitor time, Hold time SRT 1F 911-362/02C0000 Issue 1, January 2002 UMN Table of Contents Note: BER : Bit Error Ratio PM : Performance Monitor - STEP : Short Term Performance Continuing period of Loss of frame or Severely errored second - FESP : 15 minutes Errored Second Performance - TESP : 24 hours Errored Second Performance - FSEP : 15 minutes Performance - TSEP : 24 hours Severely Errored Second Performance Severely Errored Second Switching count : The number of MSP operation to start Lock-in during the “Monitor time”. Monitor time : The period to monitor “Switching count” to start Lock-in. Hold time : The duration from start to end of Lock-in condition. Figure 2-35 shows the diagram of Optical Interface terminal with MSP. SRT 1F 911-362/02C0000 Issue 1, January 2002 2-55 Table of Contents 2.6.2 UMN MSP SW and BBC MSP SW A Multiplex Section Protection Switch (MSPSW) unit is to be provided for each main channel. The MSPSW unit is a protection switching device for the OPT INTF (with MSP) terminal. The MSPSW unit functions as interface of the STM-1 electrical (CMI) signal between a BB INTF (OPT INTF with/without MSP) and a Bipolar Switch (BSW) of SCSU. BBC One BBIU Controller (BBC) unit is equipped on each BBIU. The BBC controls the MSPSW units following the control command from the Supervisory (SV) unit of the SCSU. 2-56 SRT 1F 911-362/02C0000 Issue 1, January 2002