1 Training Support Package (tsp) Fdchclos1

Transcript

TRAINING SUPPORT PACKAGE (TSP) TSP Number / Title FDCHCLOS1 / HCLOS Operator's Course Effective Date 02 Feb 2002 Supersedes TSP(s) / Lesson(s) nothing TSP Users Proponent The proponent for this document is the Signal Center and School. Improvement Comments Users are invited to send comments and suggested improvements on DA Form 2028, Recommended Changes to Publications and Blank Forms. Completed forms, or equivalent response, will be mailed or attached to electronic e-mail and transmitted to: Commander, USASC&FG ATTN: ATZH-DT (RDOT) Fort Gordon, GA 30905-5070 Security Clearance / Access Foreign Disclosure Restrictions Unclassified FD5. This product/publication has been reviewed by the product developers in coordination with the FT.HOOD , TX foreign disclosure authority. This product is releasable to students from all requesting foreign countries without restrictions. 1 PREFACE Purpose This Training Support Package provides the instructor with a standardized lesson plan for presenting instruction for: 2 This TSP Contains TABLE OF CONTENTS PAGE Preface ............................................................................................................................................. 2 Lesson Section I Administrative Data ..................................................................................... 4 Section II Introduction.................................................................................................. 6 Terminal Learning Objective - students will learn the skills necesssary to initialize, operate and perform basic testing on the AN/GRC 245 radio set. ................................................................... 6 Section III Presentation ................................................................................................ 7 Section IV Summary................................................................................................... 47 Section V Student Evaluation .................................................................................... 48 Appendix A Viewgraph Masters A - ............................................................................................ 1 Appendix B Test(s) and Test Solution(s) (N/A) B - .................................................................... 1 Appendix C Practical Exercises and Solutions (N/A) Appendix D Student Handouts (N/A) C -.......................................................... 1 D - ................................................................................... 1 3 HCLOS Operator's Course FDCHC1 / Version 1.0 17 Jan 2002 SECTION I. ADMINISTRATIVE DATA All Courses Including This Lesson Course Number Task(s) Taught(*) or Supported Task Number Task Title Reinforced Task(s) Task Number Task Title Academic Hours Version Course Title The academic hours required to teach this lesson are as follows: Resident Hours/Methods 19 hrs 30 mins / Conference / Discussion 0 hrs 0 hrs Test Test Review Total Hours: 19 hrs 30 mins Hours Test Lesson Number Lesson No. Testing N/A (to include test review) Lesson Number Lesson Title Prerequisite Lesson(s) None Clearance Access Security Level: Unclassified Requirements: There are no clearance or access requirements for the lesson. Foreign Disclosure Restrictions FD5. This product/publication has been reviewed by the product developers in coordination with the FT.HOOD , TX foreign disclosure authority. This product is releasable to students from all requesting foreign countries without restrictions. References Number Student Study Assignments TBD by instructor Instructor Requirements None Title Date 4 Additional Information Additional Support Personnel Requirements Name Stu Ratio Qty Man Hours Equipment Required for Instruction ID Name Materials Required Instructor Materials: 1 proxima, 1 classroom with tables and chairs, whiteboard, lecturn, TMs, Instructor's guide None Stu Ratio Instr Ratio Spt Qty Exp None Student Materials: student guide, TMs, and pen or pencil Classroom, Training Area, and Range Requirements Ammunition Requirements Id Name Exp Stu Ratio Instr Ratio Spt Qty None Instructional Guidance NOTE: Before presenting this lesson, instructors must thoroughly prepare by studying this lesson and identified reference material. Proponent Lesson Plan Approvals Name Rank Position 5 Date SECTION II. INTRODUCTION Method of Instruction: Conference / Discussion Instructor to Student Ratio is: 1:8 Time of Instruction: 1 hr Media: Large Group Instruction Motivator This course will provide you with the tools needed to initialize, operate and test the HCLOS Terminal Learning Objective NOTE: Inform the students of the following Terminal Learning Objective requirements. At the completion of this lesson, you [the student] will: Action: students will learn the skills necesssary to initialize, operate and perform basic testing on the AN/GRC 245 radio set. Conditions: given a Student Guide and an opportunity to operate the AN/GRC 245 radio set Standards: The Student must successfully complete all practical exercises and score a minimum of 70% on all written examinations Safety Requirements students will adhere to safety requirements outlined in applicable TMs and as indicated by instructors. Risk Assessment Level Low Environmental Considerations NOTE: It is the responsibility of all soldiers and DA civilians to protect the environment from damage. none Evaluation Instructional Lead-In the student must receive a GO on all hands-on exercises and a score of at least 70% on all written exercises. This course will provide you with the skills needed to initialize, operate and perform basic test on the AN/GRC 245 HCLOS radio set 6 SECTION III. 1. PRESENTATION Learning Step / Activity 1. Describe Changes to MSE due to ACUS RMP Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slide-1-4 a. Program Overview. 1) The modernization program is a joint effort that is being implemented by Canadian Marconi Company (CMC), Toyhanna Army Depot, Laguna Industries and Warfighter Information Network – Terrestial (WIN-T). 2) The evolving need for an Integrated Command, Control, and Communication, and Computer capability has created a need for supporting the warfighter with near real time voice, data, and video for ongoing operations. Battlefield Voice and Tele-Conferencing (BVTC), Intelligence Link (mapping and enemy position data), Tactical DMS messaging system, internet, data and ABCS planning software data are supported. 3) The High Capacity Line of Sight (HCLOS) radio set AN/GRC-245(V) will provide increased data transmission capabilities to support long range Line-ofSight (LOS) radio communications for the U.S. Army’s Area Common User System (ACUS). 4) The U.S. Army’s ACUS system consists of the Mobile Subscriber Equipment (MSE) System at Echelons Corps and Below (ECB) and the Tri-Services Tactical Communications (TRI-TAC) system at Echelons Above Corps (EAC). 5) MSE provides circuit-switched secure digital voice and packet data communications for the U.S. Army’s Corps and Division combat zone. 6) The area of operations for a Corps and five associated Divisions is 37,500 square kilometers, or a 150 km by 250 km grid. 7) MSE has the capability to interface with adjacent Corps and EAC forces, North Atlantic Treaty Organization (NATO) forces, and commercial networks. 8) The major functional areas which MSE supports are: Subscriber Terminals, Mobile Subscriber Access, Wire Subscriber Access, Area Coverage, and System Control. 9) These functionalities are provided by nodal switching elements that are interconnected by multi-channel LOS radio terminals to provide Area Coverage for MSE. The internodal link distance requirement for this equipment is up to 40 km that supports the overall 37,500 square km requirement. 10) A major part of the program is the High Capacity Line-of-Sight (HCLOS) AN/GRC-245(V) radio. 11) The AN/GRC-245(V) radio system will be used at both Echelons Corps and Below (ECB) and Echelons Above Corps (EAC). The AN/GRC-245(V) shall 7 use the same basic radio for both EAC and ECB applications, differing in the masts and possibly the antennas used. 12) This radio will be integrated into ECB shelter assemblages along with multiplexers and ancillary equipment. Integration into EAC shelter assemblages is not part of the current effort. Show slide-5 a. ACUS Radio Modernization Program. 1) CMC is responsible for the HCLOS and systems integration. Tobyhanna is responsible for the shelter modification kits and shelter integration. Laguna Industries is responsible for training, installation and fielding. 2) Band I antenna and most shelter equipment remains in use, in addition to upgraded 15 meter mast and cables. 3) A new Band III+ antenna is used, as well as 30 meter mast. 4) The AN/GRC-245 HCLOS radio replaces the existing AN/GRC-226. The radio RFU (Radio Frequency Unit) is capable of being deployed both inside the shelter or outside at the base of the mast for increased output power. 5) There are four versions of the assemblages or shelters. All versions provide radio communications across one or more terrestrial links. Each version is specially equipped to fulfill a specific mission within the MSE application. The four versions and their intended missions are identified as follows: a) Version 1 (LOS C(V)1 For use as a termination at a Small Extension Node (SEN) AN/TTC-48(V) equipped with an Asynchronous Transfer Mode (ATM) circuit switch, or at a Radio Access Unit (RAU) AN/TRC-191. a) Version 2 (LOS C(V)2 For use in NATO interface applications. Connects eight (8) 16 Kbps digital circuits from a remote NATO analogue interface box to a Node Center Switch (NCS) AN/TRC-47. b) Version 3 (LOS C(V)3 For use as a termination at an ATM circuit switch equipped Node Center (NC), or as a Radio Relay (up to and including 2 tandem relays shall be supported. c) Version 3 (LOS C(V)4 For use as a termination a Large Extension Node (LEN) AN/TTC-46(V)1, or as a Radio Relay (up to and including 2 tandem relays shall be supported. 6) The operational performance of the LOS assemblages in each of the four versions is determined by the characteristics of the AN/GRC-245(V) radio set. The LOS C(V)3 and C(V)4 versions shall have the capability to operate as radio relays. 8 Show slide-6 – – – – – – – – – New HCLOS Radios to support 8 Mbps DTGs New Band III+ Antenna for operation up to 2690 MHz New FOM and FOCA as alternative to CX-11230 Coax New FOM +5VDC Power Supply / Alarm Unit FOM supports up to 8 km of CX-13295 FOCA New Radio Rack Mounting Trays Quick disconnect of Radio RFU for Base of Mast operation TGMD upgraded to ESGM to support 8 Mbps DTGs 15 and 30 Meter Masts upgraded to support increased wind and ice loads Show slide 7 Minimum Changes to Trailers – – – Existing Trailer Configurations Retained Strengthening Kits installed on existing 15M Masts CX-13295/G FOCA cable reels replace, when available, existing CX-11230 cable reels Minimum Changes to Nodal Support Vehicle – – – Existing Nodal Support Vehicle Configuration Retained Strengthening Kits installed on existing 15 m and 30 m Mast Present 45 ft Antenna Cable replaced with Low Loss 110 ft Cable Show slide 8 Main radio components 1) HCLOS radio set consists of the Radio Frequency Unit and Baseband Unit. The HCLOS radio uses either a Band I or Band III+ antenna.The radio may be configured as: a) Band I only, AN/GRC-245(V)1 b) Band III+ only, AN/GRC-245(V)2 c) Combined Band I and Band III+, AN/GRC-245(V)3. NOTE: Conduct a check on learning and summarize the learning activity. 2. Learning Step / Activity 2. Describe components of the AN/GRC 245 HCLOS Radio Set Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slides 1-3 9 HCLOS General Description 1) The AN/GRC-245(V) radio equipment operates across the entire extent of two frequency bands, Band I (225-400 MHz) and Band III+ (1350-2690 MHz. 2) The AN/GRC-245(V) radio set is physical packaged in two units These two units are the Amplifier or Baseband Unit (BBU) and the Receiver Transmitter or Radio Frequency Unit (RFU). The BBU is common to all AN/GRC-245(V) radio sets. There are three versions of the RFU, one for Band I operation, one for Band III+ operation, and one for combined Band I and Band III+ operation. 3) The RFUs provide continuous coverage of their designated band(s) without need for manual adjustment or interchange of internal components. Frequency selections are made via the front panel keypad or can be controlled by externally via a Data Service Channel, DSC, (Integrated System Control, ISYSCON, when implemented). 4) The digital trunk group data rates of the AN/GRC-245(V) radio, while operating in both Band I and Band III+, are 256, 512, 768, 1024, 1536, 1544, 2048, 4096, and 8192 kbps. 5) The AN/GRC-245(V) radio has interfaces which meet the TRITAC standards for group traffic and digital voice engineering order wire functions. HCLOS Features 1) The radio is adapted from the field-tested GRC-512(V) radio. It is also similar in form/fit to the current GRC-226 radio. It incorporates advanced Built-In-Test Equipment (BITE) which facilitates troubleshooting and repair and ManMachine-Interface that facilitates radio operation. 2) The radio requires minimal shelter changes (rack, circuit breaker, power cord, quick disconnect). 3) The radio features spectrum management tools which help in resolving switch/radio troubleshooting: a) The radio displays real-time Bit-Error Rate (BER) and accumulated BER. High BER may indicate low RF input power or noisy link. b) The radio can recognize external failures, such as link interference, and capture these failures along with a time-stamp, for analysis. c) The radio operator may also initiate a Spectrum Scan to detect presence of interference or jamming. 10 d) The radio may be also controlled externally by ISYSCON (future). 4) Additional Enhancements a) Radio traffic data rate can is increased to 8192 kbps. b) A hidden framing scheme is used to prevent synchronizing and decoding the transmitted data by the enemy. c) The radio features Automatic Frequency Control (AFC) that defaults to a back-up frequency when interference is detected. d) The Automatic Power Control (APC) feature adjusts the transmitter output power to maintain a suitable link margin. e) The radio also has a more sensitive antenna Alignment Mode that aids in establishing the RF link. NOTE: Conduct a check on learning and summarize the learning activity. Method of Instruction: Instructor to Student Ratio: Time of Instruction: 3. Conference / Discussion 1:8 2 hrs Learning Step / Activity 3. Describe the features of the AN/GRC 245 HCLOS radio set. Media: Large Group Instruction Show slide 1-2 The AN/GRC-245(V) High-Capacity Line-of-Sight (HCLOS) radio provides increased data transmission capabilities to support long range radio communications for the U.S. Army’s Area Common User System. 2) It forms an integral part of the evolving Integrated Command, Control, Communication and Computer capability by supporting near real time voice, data and video for ongoing operations. The HCLOS radio is capable of an internodal link distance of up to 40 km and supports an overall 37,500 square km requirement. 3) The HCLOS radio can operate in either Band I or Band III+ frequencies. The band of operation is selected prior to link setup through the selection of the operating frequency and connection of the appropriate antenna. The radio is not required to operate in both bands at the same time. 4) The AN/GRC-245(V) radio set consists of a Baseband unit (BBU) and a Radio Frequency Unit (RFU). Three versions of the RFU are available. These are: a dual band unit ( 225 to 400 MHz and 1350 to 2690 MHz), a Band I only unit and a Band III+ only unit. All RFUs have the same form factor and can be deployed within or outside a shelter. Show slide 3-4 11 The HCLOS radio is capable of full duplex digital traffic at the following data rates: 256, 512, 768, 1024, 1536, 1544, 2048, 4096 and 8192 Kb/s. In addition, overhead bits for the data service channel (16 kb/s), DVOW (16 kb/s), and framing data are also transmitted. 6) The radio system, including antenna and feed cable, is capable of operating over a 40 km length link with a path reliability of no less than 99.9% in a Difficult Climate (CECOM TR-92-9), except in Band I at traffic rates of 4096 and 8192 kb/s where greater than 30 km is achieved with a path reliability of no less than 99.9% in a Difficult Climate (CECOM TR-92-9). 7) The radio has an orderwire only mode of operation with increased sensitivity over the traffic mode. 8) The AN/GRC-245 Radio Set baseband interfaces with a multiplexer within the modified LOS(V) assemblages used at ECB. The radio provides an RS449, 64 /16 Kb/s data service channel separate from the data traffic connector mounted on the front of the radio, for purposes of interfacing to ISYSCON for transmission of radio status and control. The AN/GRC-245, when installed in shelter assemblages, can operate on both 115 VAC and 24 Vdc, and will automatically switch power when power is lost. Show slides 5-8 g. The same BBU provides Band I, Band III+ and combined bands operation. h. Power Supply Subsystem. 1) The power supply subsystem uses main AC power (110 volts single phase) or DC battery power (28 volts). AC power is used even if both sources are available. 2) The power supply subsystem provides DC power for the RFU and BBU. i. Modem/Controller. 1) A modem/controller subsystem controls, modulates or demodulates signals, and provides line interfaces for both transmitted and received data. 2) The line interface provides inputs and outputs for Traffic, DVOW, radio status and control. j. Analog Orderwire Subsystem 12 1) The analog orderwire (AEOW) facilities subsystem is used to communicate with another radio set, for antenna alignment, and for running loop tests. k. Front Panel 1) The front panel subassembly comprises an interconnecting CCA with six indicators (AC, DC, 48 Vdc OUT, interference, internal fault, external fault) and seven external connectors (AC, DC, Data, DSC, Handset, Interunit, Ground) and one internal connector that connects to the modem/controller subassembly. l. Keypad and Display 1) The Keypad and Display consists of a LED display with two rows of sixteen characters and twenty keys as follows: numerical keys (0 to 9), function keys (F1, F2, F3, F4), up arrow, down arrow, CLR, SEL, EXIT and CALL. 2) The Keypad and Display module allows data entry, editing, function selection as well as configuration display. 3) Interface to the orderwire handset is done through a separate handset connector. Show slides FDCHC019-21 These Slides depict the Typical Performance Characteristics of the HCLOS under normal operational conditions. NOTE: Conduct a check on learning and summarize the learning activity. 4. Learning Step / Activity 4. Describe function keys,operator menus,and initial setup test Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slide 1-3 The operator of the radio set can measure the quality of the transmission path and verify the operational status of the equipment by initiating the following tests using the BITE: 1) LINK TQM: In this Transmission Quality Monitoring (TQM) test, all transmitted data information is replaced by a test pattern (PN sequence) and the corresponding bit-error-rate (BER) in the received signal is displayed. 13 2) DATA CABLE TQM: A TQM signal is sent on the RX data cable and the TX data cable input is monitored for the TQM pattern. 3) INPUT LOOP: External transmit data lines are looped back to the receive data at the connector for the purpose of testing cables and external equipment. 4) HANDSET LOOP: A loop test of the analog signal on the handset connector; the operator's voice, from the microphone, is fed back in the earphone at 0 dB gain. 5) RADIO LOOP: This test replaces the transmit data with a pseudo-random test pattern and compares this pattern with the receive traffic data which has been looped in the RF Unit. 6) RADIO UNIT: A verification is performed of all the assemblies of the Baseband Unit, RF Unit and the Inter-Unit Cable. 7) VSWR: The radio verifies the proper connection of the antenna. 8) DISPLAY: A test pattern is displayed on the Display Unit and LED indicators are lit. 9) BUZZER/LAMPS: The buzzer is sounded and the keypad is illuminated. 10) KEYPAD: A key-press test of each individual key is performed; feedback is provided on the display Show slide-4 This table provdes a side by side comparison between the AN/GRC 226 and the AN/GRC 245 RADIO SETS. Show slide-5 · KEYPAD COMPRISES 20 KEYS IN 4 ROWS AND 5 COLUMNS. · THE DISPLAY HAS 2 ROWS OF ALPHANUMERIC CHARACTERS AND CONTAINS ONE RED AND ONE GREEN LED INDICATOR. · READING, ENTERING, AND EDITING OPERATIONAL PARAMETERS IS DONE THROUGH A MENU DRIVEN INTERFACE: Functionally related items are grouped in one menu. Items used more often occupy the top of the list. All the lists are circular Show slide -6 The man-machine interface uses the following four types of displays 1) Menu/Sub-menu Display: a) Used to display the root of a menu (or sub-menu) branch. 14 b) In most cases, the top line identifies the menu name; the bottom line is empty. c) No field can be modified by the user. 2) Parameter Read-Only Display: a) Used to display the current value of a parameter. b) In most cases, the top line is used to identify the parameter name, and the bottom line is used to display the current value. c) No field can be modified by the user. 3) Parameter Edit Display: a) Used to edit (modify) a parameter. b) In most cases, the top line identifies the parameter name and is identical to its associated parameter read-only display. c) The bottom line has the significant digits flashing to indicate that the value can be edited. d) Unless otherwise noted, the displayed value will not be effective until it has been selected by the operator and approved by the radio set. 4) Information and Status Display: a) Used to display information messages to the operator. b) Contains no user modifiable fields. Show slide -7 BASIC KEY OPERATIONS MMI State Transition Diagram 1) The SELECT key is used for : a) Entering a lower menu level. b) Entering the edit mode. c) Entering a new parameter value and exiting the edit mode. 2) The EXIT key is used for : a) Exiting a lower menu level (i.e., go back to the menu root). b) Exiting the edit mode (without changing the parameter value). 3) The CLEAR key is used for (in order of priority) : a) Priority 1 : Acknowledge and clear a permanent preemptive message. b) Priority 2 : Stop the buzzer. 15 c) Priority 3 : Clear the first numerical field (in edit mode). d) Priority 4 : Clear each subsequent numerical field each time the key is pressed. Show slide-8 1) The ARROW UP and ARROW DOWN keys are used for : a) Circulating backward and forward in a menu list or parameter list : UP : backward, previous item DOWN : forward, next item b) Moving right or left in a numerical field : UP : move right DOWN : move left 5) The numerical keys are used to either enter a numerical value or to select an item which can be numbered from 0 to 9 Show slide-9 e. The 4 function keys give access to menus which are not part of the general MMI menu tree. Access to the functions are allowed from any MMI menu or any other function key menu. The MMI returns to the original MMI location when exiting any function key menu. f. When the CALL key is pressed, the buzzer of the radio set at the other end is turned ON (only if enabled). When the CALL key is released, the buzzer at the other end is turned OFF. This can allow some type of pulsing of the buzzer to simulate a selective calling capability in a chain of repeaters. g. 1) When a call is received, the pre-emptive message "INCOMING CALL" is latched. The CLR key or the PTT switch on the handset is used to remove this pre-emptive message. While the CALL key is pressed, the message: "OUTGOING CALL" is displayed locally to provide feedback to the call initiator. 2) The call buzzer cannot be stopped by the CLR key. To inhibit the sounding of the buzzer, it is muted in the CONFIGURATION menu. 3) The CALL feature is valid only in AEOW mode. To use the other keys, when an incoming call is displayed, the CLR key must be used first. 16 g.The Buzzer can be MUTED [ALL]: buzzer never sounds; MUTED [EXT]: buzzer muted for external alarms only; or, ENABLED: buzzer sounds when required. Show slide10-17 these slides depict the scrollable menus: Tx/RX Frequencies Menu Preset Frequencies Menu Configuration Menu Remote Control Menu Test Mode Menu Statistics Menu Information Menu Show slide-18 i. The radio may display the following messages: 1) Error messages a) Invalid entries cause error messages to be displayed. Messages are descriptive and are temporarily displayed for about one second. Show slide-19 1) Pre-emptive messages a) The MMI does not allow access to any menus while a pre-emptive message is displayed unless the action has been previously aborted. b) Pre-emptive messages always have priority over any menus. c) When a pre-emptive message is no longer active, the MMI returns to its previous menu. Show slide-20 1) Temporary messages a) Temporary messages are descriptive and are temporarily displayed for approximately one second. 17 Show slide-21 1) The radio set internal test procedure will be performed after initial installation of the radio set to check, for proper cable connections, and verify the operational readiness of the radio set. Show slide-22 An antenna and a handset are required to perform the test procedure. The antenna must be attached to the ANT B1 or ANT B3 on the RF Unit. When a combined Band I and Band III+ RF Unit is used, both a Band I antenna and a Band III+ antenna can be connected to the ANT B1 and ANT B3 connectors respectively. Show slide-23 1) The handset may be disconnected to silence alarms that normally occur during performance of the radio system test procedure. NOTE: Conduct a check on learning and summarize the learning activity. 5. Learning Step / Activity 5. Describe Basic Radio Operation Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction show slide 1 Basic Radio Operation 1. Installation -ensure correct radion equipment and antenna installed -ensure proper antenna polarization -ensure all cables connected securely -perform radio set-up test verify radio functionality 18 2. Communications set-up -ensure frequencies are set as frequency plan -set radio to AEOW mode -perform antenna alignment to ensure optimum reception -set data traffic rate -set power level to requiredlevel or to automatic -set radio to traffic -monitor for any alarm conditions -ensure BER is better than 10-5(average is 10-7) -adjust manual power level if required Show slide 2 The ardion will tune itself immediately when in an active mode (Traffic,Aeow,Dvow). If tuned in Standby modetuning will occur when it transitions from standby to an active mode.`` Show slide 3 In both EOWs (AEOW and DEOW), the power level is automatically set to maximum and the radio will transmit continuously (when implemented). Show slide 4 Align antenna for maximum receive level. A tone is generated in the handset based on the receive level: -frequency range: 400to 1600 Hz -Receive Level step size: 0.5 dB the tone frequency is updated each time the receive level is updated the tone is NOT geneerated while the PTT (Push-To-Talk)on the local analog handset is pressed, or while a CALL message is received from the other link end. Align antenna for maximum tone frequency. Show slide 5 In order to set your data rate 1. Place radio in standby 2. go into Configuration menu 3. go into Data Rate Settings set rate (256-8192) To set power level: 1. select power 2. set power for 1-9 To set Traffic Mode 1. select radio Mode 2. select traffic 19 Show slide 6 Explain slide briefly. Show slide 7 Inter-connection and Functional Overview 1) The two units are interconnected by an inter-unit cable that carries a bidirectional serial communication for control, transmit IF from the BBU, receive IF to the BBU, power and status. 2) The HCLOS radio set may be operated on either ac or dc. When both ac and dc supplies are available and connected to the HCLOS radio set, the HCLOS radio set operates from the ac supply with an automatic, instantaneous changeover to the dc supply, should there be an interruption or failure of the ac supply. 1) The HCLOS radio set interfaces with Army Tactical Communications System (ATACS) and is capable of handling full duplex bulk digital traffic at 256, 512, 768, 1024, 1536, 1544, 2048, 4096 and 8192 kb/s. When a link is set up and passing bulk traffic, a 16 kb/s Digital Voice Orderwire (DVOW) channel may be accessed by TRI-TAC DVOW line equipment. 2) A data service channel connector (DSC), separate from the data traffic connector (DATA), provides a maintenance port and an RS-422A, full-duplex, 16 Kb/s or 64 Kb/s data service channel, capable of interfacing with the ISYCON Network Manager via the MSE X.25 network, using the Simple Network Management Protocol (SNMP). 3) An Analog Voice Orderwire (AEOW) channel is provided for the operators of two communicating HCLOS radio sets when setting up a link. In this mode, no bulk data traffic can be passed. Local audio facilities are provided by a handset. 4) An operator using the front panel keypad and display on the baseband unit controls the HCLOS radio set. Extensive non-volatile storage facilities are provided. All configuration parameters may be stored and recalled for a rapid change of configuration. 5) Once operating, the HCLOS radio set requires no attention other than to respond to an engineering call or alarm condition. 6) The HCLOS radio set contains Built-In-Test Equipment (BITE) which monitors the operational readiness at power on, then continuously monitors operation and performance. 7) If the radio is not functioning properly, the operator can initiate an extensive self-test to identify the faulty line replaceable unit (LRU). Should a fault occur, the HCLOS radio set alerts the operator by visual and audible alarms. Faults are automatically diagnosed, categorized, and displayed to the operator with the appropriate alarm, as External (EXT), Internal (INT) or interference (INTRF). 20 Show slide 8 BBU and RFU Simplified Block Diagrams 1) General a) The interface between the baseband and receiver-transmitter units consists of a single coaxial inter-unit cable between connector J10 on receiver-transmitter unit and connector J3 on baseband unit. Show slide 9 1) and the receiver-transmitter unit. a) Power for receiver-transmitter unit. (48 Vdc). b) Transmit IF (16 MHz) from the modem in the baseband unit to the TX amplifier converter in the receiver-transmitter unit. c) Receive IF (140 MHz) from the down-converter in the receiver-transmitter unit to the modem in the baseband unit. d) Control signals (Amplitude Modulated 77 MHz) from the baseband unit to receiver-transmitter unit. e) Control signals (Amplitude Modulated 43 MHz) from the receiver transmitter to the baseband unit. f) The control signals include the setup of operating configuration, data bit rate and test conditions. Signals are applied to and retrieved from either end of the inter-unit cable through a cable combiner. 2) Line inputs to Transmitter a) The line inputs to the transmitter consist of separate transmit traffic data and DVOW data signals in TRI-TAC format. Each signal is a two-wire balanced signal. These signals are accepted into the HCLOS radio set at the DATA connector J4 on the baseband unit. b) The signals are converted from the balanced 100-ohm TRITAC format into TTL signals in the controller-modem Circuit Card Assembly (CCA) before being processed by the HCLOS radio set transmit circuitry. c) The controller section encodes the analog signal coming from the handset into EOW and controls the switching between traffic data and EOW. The modulator then processes the EEOW/Traffic output signal, the DVOW data and the Radio Information Link (RIL) signal routed to the cable combiner. 21 3) Line Outputs from the Receiver a) The line outputs from the receiver consist of separate receive traffic data and DVOW data signals in TRI-TAC format. b) These signals are presented to the DATA connector J4 on the baseband unit and originate from the MODEM section of the controller/modem CCA. The controller section controls the down-conversion of the IF signal from the cable combiner, monitors the output signals from the demodulator, and controls the switching between traffic data and EOW. c) The EOW is decoded into analog and directed to the handset connector (J6), while traffic and DVOW signals in TRI-TAC format are directed to traffic DATA connector J4 through the line interface. NOTE: Conduct a check on learning and summarize the learning activity. 6. Learning Step / Activity 6. Describe Maintenance Concept and BITE Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slide 1-2 a. General Maintenance Concept 1) Troubleshooting information is based on diagnostic lamp indicators and visual and audible symptoms obtained from the BITE. This information helps to identify a faulty unit or a faulty module. 2) The diagnostic lamp indicators may also help to identify a problem affecting the BITE. The six diagnostic lamp indicators are on the front panel of the Baseband unit. a. Test Mode (Display) b. BITE Fault/OOS (Display) c. +48 VDC OUT d. Interference e. Internal Fault f. External Fault . 22 3) Using the BITE necessitates a functional Display Unit, which provides the operator with a more elaborate description of faults and a facility to request various tests to be executed on the radio. 4) Signal detectors at strategic points throughout the radio allow continuous monitoring of signal conditions. The radio software provides on-line monitoring of critical signals as well as facilities to perform operator initiated tests. 5) When a fault occurs on the radio, the BITE usually indicates an alarm condition. By observing the diagnostic lamp indications, and using the F2 key (Alarms) to interrogate the BITE, the problem can be diagnosed from the message displayed. Show slide 3 6) BITE consists of: a. The Power-up BITE is performed automatically each time the radio is powered up. The Power-up tests include the controller memory check and the radio configuration data integrity check. b. The On-Line BITE constantly monitors the operation of the radio and reports faults to the operator. Two types of faults are reported: the major fault that inhibits the operation of the radio and the warnings that require service when possible. In both cases the BITE reports a malfunction to the operator only if all conditions are met to identify a fault. All alarms detected by the On-Line BITE are latched until acknowledged by the operator. The radio software then performs an analysis to identify the cause of the alarm. c. The Operator-Initiated BITE test is performed Off-Line and provides a complete internal verification of the radio and a complete diagnostic report. The operator may perform various tests when a malfunction is observed. These tests are an extension of the On-Line BITE and cover those areas that cannot be monitored during normal operation. d. The troubleshooting (Debug) mode is required in order to perform depot level maintenance. When in this mode, the BITE allows an external controller to set up various tests. During the troubleshooting mode, the normal operation of the radio is suspended. (Debug mode is not used for Direct Support maintenance.) Note: On-Line indications are those displayed during normal operation without operator intervention. Show and slides 4-5 These slidest the troubleshooting flowcharts,which provide us with a logical systematic approach to equipment testing. NOTE: Conduct a check on learning and summarize the learning activity. 7. Learning Step / Activity 7. Describe Operator Initiated Tests 23 Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slides 1-2 1) Link TQM Test a) The Link TQM Test replaces the traffic data with a pseudo random test pattern. b) The link BER display is measured using the TQM bits (instead of the framing bits). c) The Link TQM Test remains active until set OFF by the operator (or if the Radio Mode is set to an EOW mode). d) It is not possible to set the Test Mode to Link TQM when the Radio Mode is in AEOW or DEOW. e) While in link synchronization, the radio sets the test mode at the remote end to Link TQM when locally set to Link TQM and will remotely set it OFF when locally changed from Link TQM to OFF. f) Immediately after link synchronization, the radio sets the test mode to OFF if it was previously set to Link TQM and that the remote end is not set to Link TQM. Show slides 3 1) Input Loop Test a) The Input Loop test is used with external equipment to check for proper operation of the radio with its associated external Baseband Unit equipment. This loop test implements a looping back of input data and input clock to output data and output clock. b) During this test, the input bulk data to the radio is looped back to the external equipment at the line interface of the Baseband Unit. By using this test, external equipment operation may be verified along with the interconnecting cabling and the receiver drivers on the line interface card. c) This test functions independently of the data rate setting on the radio. d) If the external equipment has a Transmission Quality Monitoring (TQM) mode of operation then this mode should be used with this loop test . Show slides 4=5 a) The VSWR test measures the reflected ratio (reflected power/incident power)2 at the operating Tx frequency ± 1 24 b) c) d) e) f) MHz (each 250 kHz) for Band1 and ± 3 MHz (each 250 kHz) for Band III+ and take the highest value obtained. Measurements are taken without moving the diplexer. Measurements are taken at the lowest power level (LEVEL 1). The VSWR result is displayed in percentage from 0% to 100%. The VSWR test does not take more than 5 seconds to execute once the radio is tuned at the start frequency. A pre-emptive message is displayed while the radio is performing the test indicating the status of the operation: - Tuning to the start frequency + remaining tuning time - Measurement being performed g) A confirmation by the operator is required before initiating the test. h) It is possible to abort the VSWR Test during its execution. i) The radio will not retune itself to the Tx (or original) frequency once the VSWR Test is completed or if it is aborted. Show slides 6-7 a) The Spectrum Scan measures the RCV Level between the selected start and stop frequencies (only integer values accepted). b) By default, each time a spectrum scan is requested, the scan range is set to 30 MHz (Data Rate <= 2 Mbits/sec) or 50 MHz (Data Rate > 2 MBits/sec) centered on the operating Rx frequency (rounded off to the nearest integer value). c) If the operating Rx frequency is within 30 MHz (<= 2 Mbits/sec) or 50 MHz (> 2 Mbits/sec) of operating band lower or upper limits, the scan range will be set to the lowest or highest section of the band respectively (30 or 50 MHz). d) The radio provides the capability to change the default start and stop frequencies each time a spectrum scan is requested. e) The step size of the measurements is 2 MHz (Data Rate <= 2 Mbits/sec) or of 5 MHz (Data Rate > 2 MBits/sec). f) After completion of the spectrum scan, the radio automatically displays the results (resolution of 2 or 5 MHz) g) The interference levels are: FREE or PRESENT. h) The threshold for the above levels are: i) The last scan test results (if a Spectrum Scan was performed since the last power-up) will be available for consultation. 25 j) The time to perform a scan will not exceed 30 seconds for Band I and 180 seconds for Band III. k) A pre-emptive message is displayed while the radio is performing the scan indicating the status of the operation: - Tuning to the start frequency + total remaining time - Measurement + total remaining time l) The spectrum scan is performed at the currently selected data rate. m) A confirmation by the operator is required before initiating a spectrum scan. n) It is possible to stop the spectrum scan during execution. o) The radio does not retune itself to the Rx (or original) frequency once the scan is completed or if it is aborted. Show slides 8-9 a) b) c) d) e) f) g) h) i) j) The Radio Loop Test replaces the transmit traffic data with a pseudo random test pattern (TQM) and compares this pattern with the receive traffic data after being looped in the RFU. The Radio Loop Test is performed at the Rx frequency. A pre-emptive message displays while the radio is tuning itself to the Rx frequency indicating the time remaining (if required). The Radio Loop Test is performed at the current data rate. The Radio Loop Test verifies that no errors are observed during a measurement time period of 1 second (PASS: no errors, FAIL: 1 or more errors). The Radio Loop Test is repeated continuously. Activity progress is demonstrated while executing the test. The Radio Loop Test allows the operator to detect intermittent failures (i.e. cumulative test results). The radio allows the operator to reset the test. The radio will not retune itself to the original frequency once the test is completed or if it is aborted. Show slides 10-11 a) The RADIO UNIT Test performs an exhaustive verification of all the assemblies of the Baseband Unit and the RF Unit as well as a verification of the InterUnit connection. b) A warning message is displayed before executing (acting at the same time as a confirmation) to alert the operator to connect the feeder cable and disconnect the external data cable from the radio before starting the test. c) A temporary message will be displayed when exiting the results display of the RADIO UNIT Test to alert the operator to reconnect the cables. 26 d) The temporary "reconnect" message is displayed momentarily and no confirmation is required. e) The RADIO UNIT Test verifies the current operating band only (even if both are present). f) Time to perform a complete RADIO UNIT Test will not exceed: - 5 – 8 minutes for Band I - 7 – 10 minutes for Band III+ g) The RADIO UNIT Test performs all the Baseband Unit subtests first to allow the most complete verification of a standalone Baseband Unit. h) The RADIO UNIT Test gives the following diagnostic report: - The final test result: PASS or FAIL - The unit (RF or BB) in failure - The most probable assembly in failure A detailed troubleshooting number identifying the most likely circuit or function in failure a) Intermediate test results and status (progress) are displayed during execution of the RADIO UNIT test. b) The final status of each sub-test is displayed for more than 0.5 seconds before continuing to the next sub-test. c) The final test result is displayed after completion of the RADIO UNIT Test. d) The last diagnostic report and intermediate test results (if a RADIO UNIT Test was performed since the last power-up) is available for consultation. e) The RADIO UNIT Test is interruptible at any time. f) The RADIO UNIT Test detects 85% or more of all possible permanent faults (affecting the performance of the radio). g) The RADIO UNIT Test identifies the appropriate assembly (when a fault is detected) with a greater than 90% success rate. h) The RADIO UNIT Test uses all the data collected during the On-Line BITE that cannot be obtained during the test execution. Show slides 12 a) The Data Cable TQM Test replaces the received traffic data sent out of the radio with a pseudo random test pattern (TQM) and compares this pattern with the transmit traffic data received. b) The Data Cable TQM Test is performed at the current data rate. 27 c) The Data Cable TQM Test verifies that no errors are observed during a measurement time period of 1 second (PASS: no errors; FAIL: 1 or more errors). d) The Data Cable TQM Test is repeated continuously. e) Activity progress is demonstrated while executing the test. f) The Data Cable TQM Test allows the operator to detect intermittent failures (cumulative test results). g) The radio allows the operator to reset the test. Show slides 13 a) The Handset Loop Test loops the incoming signal from the analog handset back to the earpiece. b) The Alignment tone is generated during the handset loop test stepping through each step from the minimum to the maximum frequency following a triangular wave. c) Each step is generated for a duration of 50 ± 20 msecs. d) The tone is interrupted while the PTT is pressed. Show slides 14 a) b) c) a) The Display Test alternately lights up each row of the display. b) All pixels of a row are lit. c) The Display Test is stopped when any key is pressed or when a pre-emptive event occurs (INCOMING CALL, REMOTE PRESET, etc...) The Buzzer/Lamps Test sounds the buzzer and activates the following LEDs - Internal Alarm LED - External Alarm LED - Interference LED - Both Display Unit LEDs All lamps flash in apparent synchronism (all transitions occurring within 100 msecs) at a rate of 1 ± 0.2 Hz. The buzzer sounds during the test even if disabled. Show slides 15 a) The Keypad Test provides a feedback to the operator each time a key is pressed. The test is stopped when the same key is pressed twice. 28 NOTE: Conduct a check on learning and summarize the learning activity. 8. Learning Step / Activity 8. Describe the LOS Shelter Comm Equipment Overview Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slides 1 1) Ac power is provided by the generator set. Backup dc power is provided by the 200-ampere alternator in the shelter carrier. The power subsystem provides power to all ac-powered equipment in the shelter, provides ac to dc conversion for all dc-powered equipment, and provides continuous battery power for all critical equipment for a minimum of 10 minutes. 2) The power subsystem consists of a power bay, which houses a PEP mounted on the roadside rear wall of the shelter, a power control panel, circuit breaker panel, regulator/battery charger, and battery bank. An EMI filter assembly and an electrical surge arrestor (ESA) assembly are contained within the PEP. The PEP and circuit breaker panel provide the means for controlling and monitoring ac and dc power. 3) The regulator/battery charger converts the primary ac input into dc power to the loads connected to the main dc bus and concurrently charges or maintains a float charge on the battery bank. If both ac and dc power fail, emergency power, provided by a pair of lead acid batteries that comprise the battery bank, can operate the LOS shelter for a minimum of 10 minutes. 4) The LOS C(V)3 uses a +5 Volt power supply assembly to supply +5 Vdc nominal at an output current of 20 amperes to operate the Transmission Group Multiplexer/Demultiplexer (TGMD) and the DS3 Fiber Optic Modem (FOM). The +5 Volt power supply assembly is a dc/dc converter located at the front wall of the shelter and is a major component of the uninterruptable power subsystem. It derives its input power requirements from the prime dc bus. 29 5) The LOS C(V)1 and LOS C(V)4 use +5 volt power supply assemblies to supply +5 Vdc at an output current of 0.8 amperes each to operate the MD-1272/G Fiber Optic Modems. The +5 Volt power supply assembly is a dc/dc converter located below the shelter patch panel. It derives its power from the prime dc bus. a. LOS Shelter Signal Subsystem 1) Signals used in the MSE communications network are transmitted by coaxial or fiber-optic cable or SHF radio from the local NC, LEN, SEN, or RAU to the LOS shelter depending on the version used. In the LOS shelter the signals are patched to UHF radios for transmission (via distant LOS shelters) to the rest of the MSE communications network. 2) The handset is used for orderwire communications. The handset has a broad frequency response and contains a dynamic noise canceling microphone. 3) The terminals of the SEP are connected to the digital jacks of the patch panel. The SEP includes the following: one or two dual coaxial connector assemblies for digital transmission groups; one or two fiber-optic connectors for digital transmission groups; one or two multipin connectors for the SHF radio; two or four UHF coaxial signal connectors; and one grounding stud. 4) The patch panel provides flexible interconnections between the SEP and the various circuits unique to the different versions of the LOS shelters. The jacks of the patch panel can also be used as test entry points for the circuits terminated within the LOS shelter. Show slides 2 1) Radio Set AN/GRC-245 a) Depending on the configuration chosen, the UHF radio set permits LOS radio communications on either Band I (225 to 400 MHz) or Band III+ (1350 to 2690 MHz). b) The LOS capability of the radio set allows rapid, jam-resistant operation in a mobile tactical communications environment without fading. The UHF radio set is composed of four subassemblies: receiver-transmitter subassembly (Band I or Band III); Baseband subassembly; inter-unit cable subassembly; and antenna subassembly (Band I or Band III+). c) Operation of the UHF radio set is accomplished by a front-panel keypad and a display. The orderwire facilities subsystem is a local audio facility 30 available by a handset to provide a 16-kb/s Digital Voice Orderwire (DVOW) and a Frequency Modulation (FM) EOW. d) Built-in Test (BIT) provides the capability to troubleshoot to the lowest replaceable unit level and allows verification of performance testing. 2) Radio Set AN/GRC-224 (P) a) The SHF radio set provides short-range radio communications. DVOW is available. The SHF radio set can transmit and receive Non-Return-to-Zero (NRZ) balanced data signals and square wave balanced clock signals. b) The control module subassembly allows a wide selection of radio frequency allocations and a choice of four data transmission rates. For each rate used, the control module subassembly automatically selects the appropriate Intermediate Frequency and alarm threshold. All frequency and data rate parameters are selected by means of a numeric keypad located on the front panel of the control module subassembly. c) BIT and alarm circuits within the control module subassembly facilitate equipment checks and fault location. 3) Communication Modem (MD-1270(P)/T) a) Through its DVOW function, the CM allows the operator to transmit encrypted voice communication and receive decrypted voice communication. b) Through its Group Modem (GM) function, the CM provides the driver for the dual coaxial CX-11230A/G cable. 4) Communication Security Equipment (COMSEC) KY-57 a) This unit is a companion component to the communication modem. The KY-57 is a secure VHF/UHF, AM/FM half-duplex radio and tactical wireline communication encryption system. b) It processes voice, analog, and digital data while providing encryption/ decryption for all information traffic. This unit is operated using a handset for communication to other shelters selected at the communication modem. Show slides 3 1) Transmission Group Multiplexer/Demultiplexer (TGMD a) The TGMD combines up to four groups into a single group. It provides a single DTG to the SEP. The TGMD interfaces with the status and control panel, and also interfaces with a fiber optic modem via a 75 ohm unbalanced coax connection with the patch panel which provides the MDTG output. 31 b) The LOS C(V)3 also has a unique TGMD Status and Control Panel. The panel provides controls and indicators which set the data rate of demultiplexer DTGs and give summary status indications of the operating conditions of DTG interfaces and multiplexer DTG synchronization state. c) The status and control panel also controls the multiplexed DTG interface by providing switch selections of TRI TAC interface, diphase interface or loopback. It also provides the MDTG format selection of mode 1 or mode 2. 6) Trunk Encryption Device (TED) KG-194A (LOS C(V)2Only) a) The KG-194A is a full-duplex synchronous device that provides group encryption and decryption with remote rekey capability and two operating modes. The two modes differ only in the way the cryptokey is generated. In the first, or, the NAI converts digital voice signals from an NC switch (relayed through a LOS C(V)3) to analog for transmission to other national telecommunications systems. b) traditional mode (as used by the KG-94A), the cryptokey is manually loaded into each TED with a KYK-13 electronic transfer device, and requires personnel to travel between shelters to perform the task. This mode is currently used in MSE. c) The second mode utilizes the KG-194A's remote rekey capability, and is not being used at this time. 7) NATO Analog Interface (NAI) (LOS C(V)2 Only) a) In remote configurations Digital NATO Interface (DNI) (LOS C(V)3 Only) a) In remote configurations, the DNI converts digital MSE formatted signals to digital NATO formatted signals and vice versa. Show slides 4 1) Transmit Path a) When a call is placed through a SEN switch or remote RAU, it is multiplexed and routed through a coaxial or fiber-optic cable from the RAU or SEN to the GM in the communication modem by means of the signal entry panel, FOM, and patch panel. b) Alternatively, the multiplexed signal from the SEN switch is transmitted by means of an SHF radio link. The signal is then routed through the patch panel to the UHF radio set. c) The output of the radio set is routed through the signal entry panel to the appropriate antenna subassembly, which radiates the signal to a LOS C(V)3 radio terminal and the intended call address. 32 2) Receive Path a) For the receive path, the call is routed through the LOS C(V)3 radio terminal and radiated to the appropriate antenna subassembly at the LOS C(V)1 radio terminal. b) Here the signal is routed to the radio set through the signal entry panel. The received multiplexed signal is routed through the patch panel to the GM in the communication modem, or to the SHF radio set. c) The signal is then routed through the patch panel, signal entry panel, and FOM to the output coaxial or fiber-optic cable directed to the SEN switch or remote RAU, and then to its intended source address. Show slides 5-6 1) New Equipment / Changes a) HCLOS radio has been upgraded to AN/GRC-245(V). b) Provision is made for optional MD-1272/G FOM in SEP. c) FOM +5Vdc Power Supply has been installed in the access panel. d) Patch panel has been modified for FOM patching. e) EOW3 switch routes Comm Modem EOW3 circuit to either the SHF radio or the Maintenance Orderwire (MOW) circuit of the MD-1272/G FOM. Show slides 7-8 1) Transmit Path a) NC switch signaling data is transmitted over cable to a LOS C(V)3. The LOS C(V)3 assemblage then transmits the data via UHF radio link to the antenna subassembly of the LOS C(V)2, where it is routed by cable through the SEP. b) The multiplexed signal is directed to the TED by the patch panel. The TED decrypts the signal and sends it on to the LMD in the communication modem of the LOS C(V)2 where it is demultiplexed. The demultiplexed 8-channel signal is then routed back through the patch panel, to the SEP, and sent to the NAI over the 26-pair cable. 2) Receive Path a) The digital signal from the NAI travels over the 26-pair cable and enters the LOS C(V)2 assemblage through the SEP. 33 b) The signal is directed to the LMD in the communication modem of the LOS C(V)2 by the patch panel, where it is multiplexed and sent to the TED for encryption. c) The signal is then routed from the TED through the patch panel and out via the SEP to the antenna subassembly for transmission to the LOS C(V)3. 3) New Equipment / Changes a) HCLOS radio has been upgraded to the AN/GRC-245(V). Show slides 9-10 1) Transmit Path a) A super-group of multiple DTG signals from the NC’s ATM switch are routed to the LOS C(V)3 either by CX-11230/G 1/4 mile coaxial cable, or by CX-13295/G 1 km fiber-optic cable, or by SHF radio if installed. b) Maximum DTG bit rates are limited by the capacity of the super-group link between the NC and the LOS C(V)3. When using fiber-optic cable, four DTGs of up to 8.192 Mbps each can be accommodated by the 44.736 Mbps super-group. c) When using coaxial cable or the SHF radio, three DTGs of up to 1.024 Mbps, and one DTG of up to 512 kbps, can be accommodated by the 4.096 Mbps super-group. The super-group enters the LOS C(V)3 through the SEP and is routed through the patch panel to the TGMD. d) When using the CX-13295/G fiber-optic cable a DS3-FOM within the SEP performs the optical to electrical conversion. The TGMD converts the super-group into four individual DTGs that are returned back to the patch panel. e) The individual DTGs are then routed through the patch panel to the three HCLOS UHF radio sets, or to the optional SHF radio set if one is installed, as required by the LOS C(V)3’s current deployment. f) The UHF and SHF radios’ RF outputs are routed through the SEP to the appropriate antenna subassemblies, which radiate the DTG groups to other LOS vehicles or the NC. Receive Path a) The DTG signals are received at the antenna of the LOS shelter and routed through the SEP and patch panel, to their associated UHF or SHF radio set. b) The DTG signals are then routed to the TGMD, where they are multiplexed into a super group. The super group is routed through the patch panel and SEP to the NC switch over a CX11230A/G or CX-13295 (cable) or SHF radio. c) The TGMD multiplexes and demultiplexes digital signals using pulse-code modulation. It also provides an external interface for the communication modem. 34 Digital NATO Interface (DNI) a) The DNI is an optional kit, that when used, converts digital MSE formatted common channel signal (CCS) messages to digital NATO formatted CCS messages, and vice versa. b) This conversion enables MSE's digital switching equipment to communicate with the digital switching equipment used at NATO sites. New Equipment / Changes a) HCLOS radio has been upgraded to the AN/GRC-245(V). b) TGMD is upgraded and becomes the Enhanced Super Group Multiplexer (ESGM). c) DS3 FOM is installed in the SEP panel and is powered by TGMD +5V PS. d) DS3 FOM alarm indicator is installed in the access panel. e) Patch panel has been modified for FOM patching. f) TGMD Status and Control Panel Interface Select switch is modified to allow routing the super group data to the FOM. 6) Control & Monitor Network (CMN) a) The CMN equipment allows ISYSCON to control up to 8 HCLOS radios. b) CMN will be implemented in the future. Show slides 11 1) Transmit Path a) When a call is placed through a LEN switch, it is multiplexed and routed through a coaxial or fiber-optic cable to the group modem in the communication modem by means of the signal entry panel, FOMs, and patch panel. b) Alternatively, the multiplexed signal can be transmitted from the LEN switch to the LOS C(V)4 shelter by means of an SHF radio link. The signal is then routed through the patch panel to one of two UHF radio sets. c) The output of the radio set is routed through the signal entry panel to the appropriate antenna subassembly, which radiates the signal to a LOS C(V)3 radio terminal and the intended call address. 35 2) Receive Path a) For the receive path, the call is routed through the LOS C(V)3 radio terminal and radiated to the appropriate antenna subassembly at the LOS C(V)4 radio terminal. b) Here the signal is routed to the appropriate radio set through the signal entry panel. c) The received multiplexed signal is routed through the patch panel to the GM in the communication modem, or to an SHF radio set. The signal is then routed through the patch panel, signal entry panel, and FOM to the output coaxial or fiber-optic cable directed to the LEN switch, and then to its intended source address. Show slides 12-13 1) New Equipment / Changes a) HCLOS radios have been upgraded to AN/GRC-245(V). b) Provision is made for optional MD-1272/G FOMs in SEP. c) FOM +5Vdc Power Supplies have been installed in the access panel. d) Patch panel has been modified for FOM patching. e) EOW5 switch routes Comm Modem EOW5 circuit to either the SHF1 radio or the Maintenance Orderwire (MOW) circuit of the MD-1272/G FOM1. f) EOW6 switch routes Comm Modem EOW5 circuit to either the SHF2 radio or the Maintenance Orderwire (MOW) circuit of the MD-1272/G FOM2. Show slides 14-18 These Slides depict the normal deployment of the LOS assemblages C(V) 1-4 Show slides 19-21 These slides show the proper stowage of equipment Show slides 22 36 1) The Band I antenna is stored flat against either the shelter’s curbside or roadside wall and held in its storage position with straps. 2) The procedure for storing the Band I antenna(s) in the LOS shelters is as follows: a) For the LOS C(V)1 and LOS C(V)4, store the Band I antenna against the curbside wall above the radio racks using the tie down straps provided on the curbside wall. b) For the LOS C(V)2, locate the Band I antenna on the antenna support bracket (A1-32552D) located on the roadside sponson, and secure the Band I antenna against the roadside wall using the tie down straps provided on the roadside wall. c) For the LOS C(V)3 locate the first Band I antenna on the antenna support bracket (A1-32552D) located on the roadside sponson. Store the second Band I antenna on top of the first Band I antenna. Use the tie down straps provided on the roadside wall to secure the two antennas to the roadside wall. Show slides 23 1) The Band III+ antenna is stored vertically in the center of the shelter using mounting brackets, antenna retainers, and tie-down straps. 2) The procedure for storing the Band III+ antenna(s) in the LOS shelters is as follows: a) Remove the antenna feedhorn(s) from the Band III+ antenna(s) and store in the antenna feedhorn storage container located above the curbside radio racks. b) Install a floor support bracket (A1-32614D) for each Band III+ antenna on the floor of the shelter using the bracket’s two captive knobs. Qty 1 floor support bracket is required for the LOS C(V)1, LOS C(V)2, and LOS C(V)4. Qty 2 floor support brackets are required for the LOS C(V)3. c) Install an antenna support bracket (A1-32431D) on the shelter’s roadside sponson using the bracket’s four captive knobs. d) Install the Band III+ antenna’s parabolic reflector vertically on the locating bushing on the antenna support bracket such that the locating bushing goes through the center of the antenna’s reflector. Note that the Band III+ antenna’s reflector has flat spots on its upper and lower edges, the lower flat spot must be located on the floor support bracket. e) For the LOS C(V)1, LOS C(V)2, and LOS C(V)4, screw antenna retainer (A1-32434D) through the center of the antenna’s parabolic reflector onto the antenna locating bushing on the antenna support bracket to secure the antenna to the antenna support bracket. 37 f) For the LOS C(V)3, screw antenna retainer (A1-32433D) through the center of the antenna’s parabolic reflector into the antenna support bracket to secure the first antenna to the antenna support bracket. Then install the second antenna onto the antenna retainer (A132433D) with the second antenna cupped inside the first antenna. Then screw antenna retainer (A1-32434D) through the center of the second antenna’s parabolic reflector into the first antenna’s retainer to secure the second antenna to the antenna support bracket. g) Feed the two tie down straps from the top of the antenna’s sponson support bracket over the top of the Band III+ antenna(s) and secure the straps to the antenna’s floor support bracket (A1-32614D). e. The procedure for removing the Band I and Band III+ antennas from the LOS shelters is the reverse of the above storage procedures. NOTE: Conduct a check on learning and summarize the learning activity. 9. Learning Step / Activity 9. Describe deployment of mast and patch procedures Method of Instruction: Instructor to Student Ratio: Time of Instruction: Media: Conference / Discussion 1:8 2 hrs Large Group Instruction Show slides 1-3 RFU Removal and Carrying Case a) Retrieve a RFU Carrying Harness from its storage location within the shelter. b) Position the carrying harness on the floor of the shelter beneath the RFU to be removed. c) Open the carrying harness in readiness to accept the RFU, with the opened half of the carrying harness resting vertically against the side of the sponson beneath the RFU. d) Ensure that the HCLOS Radio’s BBU AC and DC POWER switches are OFF. e) Remove the coaxial interunit cable between the HCLOS Radio’s RFU INTERUNIT connector and the BBU INTERUNIT connector, and stow the cable in one of the storage cabinets located in the shelter’s front wall equipment rack. f) Disconnect the ground wire from the binding post on the front of the RFU. g) Remove the shelter coaxial antenna cable from the RFU’s Antenna Connector, (the RF cable will be attached to either the ANT B1 or ANT B3 connector depending on the current deployment). 38 h) Reconnect the shelter antenna cable, (disconnected from the RFU), directly to the BBU’s INTERUNIT Connector. i) Unscrew the two hold-down knobs (approximately 6 turns each), counter clockwise, until they clear the tabs on the front of the RFU. Swing down the hold-down knobs away from the RFU. WARNING The AN/GRC-245(V) RFU weighs 77 lbs (35 kg). To prevent injury to personnel, two persons are required to lift and carry the RFU as required by the following steps. j) Slide the RFU half way out of its rack, resting on its mounting tray. k) With the assistance of a second crew member, each with one hand on a handle of the RFU, and the other hand supporting the bottom of the RFU, slide the RFU fully out of the rack. l) Both crew members lower the RFU into the carrying harness positioned on the shelter’s floor. m) Close the carrying harness and secure it with the 2 locking clasps. n) Using the 2 carrying handles on the carrying harness, both crew members carry the RFU out of the shelter and place it flat on the HMMWV’s tailgate. o) Both crew members descend the HMMWV’s boarding ladder. p) Using the 2 handles on the carrying harness, both crew members retrieve the RFU from the HMMWV’s tailgate. q) Using the 2 carrying handles on the carrying harness, both crew members walk the RFU over to the base of the mast which is a maximum distance of 90 ft. r) Note that the carrying harness design ensures that there is no leg obstruction while carrying the RFU. While being carried, the maximum RFU height is about 2 ft above the ground. In case the RFU is dropped en route to the mast, the carrying harness provides drop protection of 2 feet on all 6 surfaces. RFU Installation at the Mast a) Place the RFU (in its carrying harness) at the base of the mast with the integral solar shield towards the sun. If some other orientation is necessary at a specific site, then a separate source of shade for the unit may be required. 39 b) Connect the mast’s antenna download cable to the appropriate ANT B1 or ANT B3 connector on the RFU. A 65 ft antenna cable is used with a 15 meter mast, and a 110 ft antenna cable is used with the 30 meter mast. c) Ensure that the unused antenna connector on the RFU (if present) is capped. d) Connect a 45 ft antenna cable to the INTERUNIT connector on the RFU. Note that, if necessary, two 45 ft antenna cables can be connected in series to allow the mast to be located 90 ft from the shelter, without having any effect on radio link performance. 4) Shelter Cable Connection and Radio Operation a) Return to the shelter and connect the other end of the 45 ft antenna cable(s) to the appropriate Band I or Band III+ connector on the shelter’s Signal Entrance Panel. b) Enter the shelter and power up the HCLOS radio using the AC and DC POWER switches on the BBU. c) Align the mast antennas, engineer the radio link, and establish communications, as with an in-shelter RFU deployment. Base-of-the-Mast Tear Down Procedure 1) The Tear Down procedure is the reverse of the Setup procedure. When installing the RFU back in the radio rack, ensure that the RFU is properly seated on the two guide pins at the rear of the rack. c. Base-of-the-Mast RFU Grounding Procedure 1) The RFU, when deployed at the base of the mast, is directly connected to the S250 shelter and to the S250 shelter’s grounding system, via the outer sheathing of the 45 ft antenna cable(s) which connects the RFU to the shelter’s SEP. 2) There is no need to provide any additional grounding of the RFU at the base of the mast. Show slides 4-12 a. Patch Panel Operation 1) Introduction a) All signaling lines pass through the patch panels. DVOW circuits are hardwired through the patch panels whereas all 40 traffic data/clock circuits are routed via jacks on the patch panels. b) The patch panels allow manual cross connection of traffic circuits to accommodate the specific deployment scenario, and allow manual interruption of traffic circuits for maintenance and diagnostic purposes. The following describes the LOS C(V)1, C(V)2, C(V)3, and C(V)4 patch panels. LOS C(V)1 Patch Panel a) The LOS C(V)1 patch panel contains: - Digital Trunk Group (DTG) Jacks - Equipment Jacks, LOS and GM - Equipment Jacks, SHF - Equipment Jacks, FOM b) Digital Trunk Group (DTG) Jacks - At the right of the patch panel are jacks for one DTG. There are four jacks arranged in a two-over-two grouping. The jacks are color coded black and gray. - The top pair of jacks goes to the dual coaxial CX-11230/G cable connector on the SEP, the top black jack transmits signals and the top gray jack receives signals. - The bottom pair of jacks goes to the cable output side of the GM located within the Communications Modem, the bottom black jack receives signals and the bottom gray jack transmits signals. Equipment Jacks, LOS and GM - - The four LOS jacks go to the data connector of the AN/GRC-245 UHF Radio Set and the four GM jacks go to the traffic data side of the GM. The LOS/GM jacks contain normal through connections between the upper LOS jacks and the lower GM jacks that allow the UHF Radio Set to transmit and receive signals though the GM without the necessity for any patch cords. These through connections can be broken and intercepted by the insertion of patch cords into the LOS/GM jack d) Equipment Jacks, SHF - The four SHF jacks go to the data connector of the AN/GRC-224 SHF Radio Set, if it is installed. The SHF jacks permit personnel to insert patch cords between the SHF jacks and the LOS jacks to bypass the GM when the SHF radio set is used. 41 e) Equipment Jacks, FOM - The four FOM jacks go to the data connector of the FOM. The FOM jacks permit personnel to insert patch cords between the FOM jacks and the LOS jacks to bypass the GM when the FOM and CX-13295/G fiber-optic cable is used. 3) LOS C(V)2 Patch Panel a) The LOS C(V)2 patch panel contains: - NATO Analogue Interface (NAI) Channel Jacks Loop Group Multiplexer (LGM) Channel Jacks Equipment Jacks, LOS, TED, and OCU b) NAI Jacks - - At the top of the patch panel are eight pairs of jacks for eight NAI channels. The jacks go to the 26 pair cable connector on the SEP for connection to the external NAI unit. The jacks are color coded black and gray. The top black jacks are transmit signals and the top gray jacks are receive signals. c) LGM Jacks - At the bottom of the patch panel are eight pairs of jacks for eight LGM channels. The jacks go to the LGM located within the Communications Modem. - The jacks are color coded black and gray for transmit and receive. The bottom black jacks are receive signals and the bottom gray jacks are transmit signals 4) LOS C(V)4 Patch Panel a) The LOS C(V)4 patch panel contains - Digital Trunk Group Jacks DTG1/2 Equipment Jacks LOS1/2 and GM1/2 Equipment Jacks SHF1/2 Equipment Jacks FOM1/2 TIM CLK Jacks b) Digital Trunk Group Jacks DTG1/2 42 - At the right of the patch panel are jacks for two DTGs. For each DTG there are four jacks arranged in a two-over-two grouping. The jacks are color coded black and gray. - The top pairs of jacks go to the dual coaxial connectors on the SEP, the black jacks transmit signals and the gray jacks receive signals. The bottom pairs of jacks go to the cable output sides of the two GMs located within the Communications Modem, the - black jacks transmit signals and the gray jacks receive signals. c) Equipment Jacks LOS1/2 and GM1/2 - - The LOS1/2 jacks go to the data connectors of the two AN/GRC-245 UHF Radio Sets and the GM1/2 jacks go to the traffic data sides of the two GMs. The LOS/GM jacks contain normal through connections between the upper LOS jacks and the lower GM jacks that allow the two UHF Radio Sets to transmit and receive signals though the two GMs without the necessity for any patch cords. These through connections can be broken and intercepted by the insertion of patch cords into the LOS/GM jacks. d) Equipment Jacks SHF1/2 - The SHF1/2 jacks go to the data connectors of the two AN/GRC-224 SHF Radio Sets, if they are installed. The SHF1/2 jacks permit personnel to insert patch cords between the SHF1/2 jacks and the LOS1/2 jacks to bypass the GMs when the SHF radio sets are used. e) Equipment Jacks FOM1/2 - The FOM1/2 jacks go to the data connectors of the two FOM. The FOM1/2 jacks permit personnel to insert patch cords between the FOM1/2 jacks and the LOS1/2 jacks to bypass the GMs when the FOMs and fiber-optic cables are used. TIM CLK Jacks - The LOS1 TIM CLK jack and the LOS2 TIM CLK jack are only used when the GM located within the Communications Modem (a.k.a. TIM) is not required, such 43 - as when the LOS C(V)4 is being used as a radio relay vehicle with LOS1 directly connected to LOS2. In these applications the Communications Modem does not receive a clock signal from a LOS Radio Set which it needs in order to synchronize its orderwire circuits with the traffic. Therefore, in repeater applications, a patch cord must be used between the TIM CLK jack of the appropriate LOS and the RCV CLK jack of the GM. The LOS C(V)3 patch panel contains: - Digital Trunk Group Jacks, DTG1, DTG2, DTG3, DTG4 Equipment Jacks, LOS1, LOS2, LOS3, SHF MDTG Jacks, FIELD and GM DS3 Jacks, FOM, QTGM and RADIO MDTG Jacks b) General Description - The LOS C(V)3 configuration permits data from three LOS Radio Sets and an optional SHF Radio Set to be combined into a single high data rate traffic signal. - This high data rate signal can then be relayed either over CX-11230 coaxial cable, or over CX-13295/G fiber-optic cable, or over the SHF radio link, or over a future DS3 radio link, to the NC D(V)1 switching vehicle at a LEN. The LOS C(V)3 patch panel controls the combining of the traffic from the LOS and SHF Radios by the ESGM, and controls the method of routing this combined traffic to the NC. a) Digital Trunk Group Jacks, DTG1/4 - The four sets of four DTG jacks go to the multiplexer/demultiplexer located within the ESGM where they are combined into a high data rate traffic signal. d) Equipment Jacks, LOS1/3, SHF - - The LOS1/3 jacks go to the traffic data connectors of the three AN/GRC-245 UHF Radio Sets. The SHF jacks go to the traffic data connector of the AN/GRC-224 SHF Radio Set. The LOS1/3,SHF and DTG1/4 jacks contain normal through connections between the upper LOS1/3,SHF jacks and the lower DTG1/4 jacks. This allows the three UHF 44 - Radio Sets and the SHF Radio Set to transmit and receive signals though the ESGM’s multiplexer/demultiplexer without the necessity for any patch cords. These through connections can be broken and intercepted by the insertion of patch cords into the LOS1/3,SHF and DTG1/4 jacks. e) MDTG Jacks, FIELD, GM - At the right of the patch panel are jacks for one Multiplexed DTG (MDTG). There are four jacks arranged in a two-over-two grouping. The jacks are color coded black and gray. - The top pair of jacks (FIELD) go to the dual CX-11230/G coaxial connector on the SEP, the top black jack transmits signals and the top gray jack receives signals. - The bottom pair of jacks (GM) go to the cable output side of the GM located within the ESGM, the bottom black jack transmits signals and the bottom gray jack receives signals. DS3 Jacks, FOM, QTGM and RADIO - - - The pair of FOM jacks go to the data connector of the DS3-FOM. The pair of QTGM jacks go to the DS3 Driver located within the QTGM card within the ESGM. The pair of RADIO jacks are reserved for future use with a DS3 Radio Set. These three pairs of jacks permit the high data rate DS3 output from the ESGM to be routed either to the DS3 FOM for transmission over CX-13295/G fiber-optic cable, or to the future DS3 Radio. They also provide a convenient location for loop-back jumpers for testing. g) MDTG Jacks - The four MDTG jacks go to a separate output of the ESGM’s multiplexer/demultiplexer. They permit the output of the ESGM’s multiplexer/demultiplexer to be patched using patch cords to the SHF Radio Set for a down-the hill link to the NC. Show slides 13-17 45 Patching for Normal Operation and Loopback Patching 1) For the LOS C(V)2 and C(V)4, the LOS radios are automatically connected through the patch panels to the Group Modems within the Communications Modems for subsequent transmission by the CX-11230/G 1/4 mile coaxial cables. 1) The LOS radios may be connected to the FOMs, or to the SHF radios directly. For the LOS C(V)3, the LOS radios are automatically connected through the patch panel to the DTG inputs of the multiplexer/demultiplexer within the TGMD. The TGMD’s INTERFACE SELECT switch is then used to select ongoing transmission either by the GM and 1/4 mile coaxial cable, or by the FOM and fiber-optic cable, or by the SHF radio. NOTE: Conduct a check on learning and summarize the learning activity. 46 SECTION IV. SUMMARY Method of Instruction: Conference / Discussion Instructor to Student Ratio is: 1:8 Time of Instruction: 30 mins Media: Large Group Instruction Check on Learning Determine if the students have learned the material presented by soliciting student questions and explanations. Ask the students questions and correct misunderstandings. Review / Summarize Lesson The HCLOS radio was adopted to optimize the additional bandwidth of high-speed data networks. 47 SECTION V. Testing Requirements STUDENT EVALUATION NOTE: Describe how the student must demonstrate accomplishment of the TLO. Refer student to the Student Evaluation Plan. The student must recieve a score of 70% on the final exam Feedback Requirements NOTE: Feedback is essential to effective learning. Schedule and provide feedback on the evaluation and any information to help answer students' questions about the test. Provide remedial training as needed. An end-of-course critique is required for every completion certificate issued. 48 VIEWGRAPHS FOR LESSON 1: FDCHC1 version 1.0 Learning Step 1 VGT, PPP Multi Media Attached! Click here then press F9 to view. A-1 Appendix B Test(s) and Test Solution(s) (N/A) B-1 Appendix C Practical Exercises and Solutions (N/A) C-1 Appendix D Student Handouts (N/A) D-1