Dd2401 Vme L-band Demod Card

Transcript

DD2401 VME L-Band Demod Card Installation and Operation Manual MN-VME2401 Revision B Comtech EF Data • 2114 W 7th St. • Tempe, AZ 85281 • (480) 333-2200 • Fax: (480) 333-2540 • www.comtechefdata.com DD2401 VME L-Band Demodulator Card Installation & Operational Manual Warranty Policy Warranty Policy WP Comtech EF Data products are warranted against defects in material and workmanship for a period of two years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or replace products that prove to be defective. For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight charges only for return of the equipment from the factory to the owner. Comtech EF Data will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data. All equipment returned for warranty repair must have a valid RMA number issued prior to return and be marked clearly on the return packaging. Comtech EF Data strongly recommends all equipment be returned in its original packaging. Comtech EF Data Corporation’s obligations under this warranty are limited to repair or replacement of failed parts, and the return shipment to the buyer of the repaired or replaced parts. Limitations of Warranty The warranty does not apply to any part of a product that has been installed, altered, repaired, or misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the reliability or detracts from the performance of any part of the product, or is damaged as the result of use in a way or with equipment that had not been previously approved by Comtech EF Data Corporation. The warranty does not apply to any product or parts thereof where the serial number or the serial number of any of its parts has been altered, defaced, or removed. The warranty does not cover damage or loss incurred in transportation of the product. The warranty does not cover replacement or repair necessitated by loss or damage from any cause beyond the control of Comtech EF Data Corporation. The warranty does not cover any labor involved in the removal and or reinstallation of warranted equipment or parts on site, or any labor required to diagnose the necessity for repair or replacement. The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or consequential damages arising from the use of the equipment or products, or for any inability to use them either separate from or in combination with any other equipment or products. A fixed charge established for each product will be imposed for all equipment returned for warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported failure. Exclusive Remedies Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties, expressed, implied, or statutory, including those of merchantability and fitness for a particular purpose. The buyer shall pass on to any purchaser, lessee, or other user of Comtech EF Data Corporation’s products, the aforementioned warranty, and shall indemnify and hold harmless Comtech EF Data Corporation from any claims or liability of such purchaser, lessee, or user based upon allegations that the buyer, its agents, or employees have made additional warranties or representations as to product preference or use. The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF Data shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory. MN-VME2401 – Rev. B iii Warranty Policy DD2401 VME L-Band Demodulator Card Installation & Operational Manual Warranty Repair Return Procedure Before a warranty repair can be accomplished, a Repair Authorization must be received. It is at this time that Comtech EF Data will authorize the product or part to be returned to the Comtech EF Data facility or if field repair will be accomplished. The Repair Authorization may be requested in writing or by calling: Comtech EF Data Corporation th 2114 W 7 Street. Tempe, Arizona 85281 (USA) ATTN: Customer Support Phone: (480) 333-2200 Fax: (480) 333-2540 Any product returned to Comtech EF Data for examination must be sent prepaid via the means of transportation indicated as acceptable to Comtech EF Data. Return Authorization Number must be clearly marked on the shipping label. Returned products or parts should be carefully packaged in the original container, if possible, and unless otherwise indicated, shipped to the above address. Non-Warranty Repair When a product is returned for any reason, Customer and its shipping agency shall be responsible for all damage resulting from improper packing and handling, and for loss in transit, not withstanding any defect or nonconformity in the product. By returning a product, the owner grants Comtech EF Data permission to open and disassemble the product as required for evaluation. In all cases, Comtech EF Data has sole responsibility for determining the cause and nature of failure, and Comtech EF Data’s determination with regard thereto shall be final. iv MN-VME2401 – Rev. B DD2401 VME L-Band Demodulaotr Card Installation & Operational Manual Preface Preface P This manual provides installation and operation information for the Radyne DD2401 VME L-Band Demodulator Card. This is a technical document intended for use by engineers, technicians, and operators responsible for the operation and maintenance of the DD2401 VME Demodulator Card. Cautions and Warnings A caution icon indicates a hazardous situation that if not avoided, may result in minor or moderate injury. Caution may also be used to indicate other unsafe practices or risks of property damage. A warning icon indicates a potentially hazardous situation that if not avoided, could result in death or serious injury. A note icon identifies information for the proper operation of your equipment, including helpful hints, shortcuts, or important reminders. Trademarks Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. MN-VME2401 – Rev. B v Preface DD2401 VME L-Band Demodulaotr Card Installation & Operational Manual Copyright 2009, Comtech EF Data This manual is proprietary to Comtech EF Data and is intended for the exclusive use of Comtech EF Data’s customers. No part of this document may in whole or in part, be copied, reproduced, distributed, translated or reduced to any electronic or magnetic storage medium without the express written consent of a duly authorized officer of Comtech EF Data Disclaimer This manual has been thoroughly reviewed for accuracy. All statements, technical information, and recommendations contained herein and in any guides or related documents are believed reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and they are not intended to be, nor should they be understood to be, representations or warranties concerning the products described. Comtech EF Data assumes no responsibility for use of any circuitry other than the circuitry employed in Comtech EF Data systems and equipment. Furthermore, since Comtech EF Data is constantly improving its products, reserves the right to make changes in the specifications of products, or in this manual at any time without notice and without obligation to notify any person of such changes. Record of Revisions Revision Level Date 1.0 A B 04-01-98 12-16-08 2-23-09 Reason for Change New Release. Updated Terrestrial Interfaces. Clarified use of 8PSK. Technical specifications made to match other product lines Comments or Suggestions Concerning this Manual Comments or suggestions regarding the content and design of this manual are appreciated. To submit comments, please contact the Comtech EF Data Corporation Customer Service Department. vi MN-VME2401 – Rev. B DD2401 VME L-Band Demodulaor Card Installation & Operational Manual Table of Contents Table of Contents ToC Section 1 - Introduction .............................................................................................1-1 1.0 Description ______________________________________________________ 1-1 1.1 DD2401 VME Demodulator Card Available Options _______________________ 1-2 1.1.1 Reed-Solomon Codec (Optional) ____________________________________ 1-2 1.1.2 Turbo Codec (Optional)_ __________________________________________ 1-2 1.1.3 8PSK (Optional) ________________________________________________ 1-2 Section 2 - Installation ...............................................................................................2-1 2.0 Installation Requirements ___________________________________________ 2-1 2.1 Unpacking _______________________________________________________ 2-1 2.2 Removal and Assembly ____________________________________________ 2-1 2.3 Mounting Considerations ___________________________________________ 2-1 2.4 Demodulator Checkout _____________________________________________ 2-1 2.4.1 Initial Power-Up _________________________________________________ 2-1 2.4.2 Factory Terminal Setup (Refer to Section 4.4)__________________________ 2-2 2.4.3 Remote Protocol Factory Default Setup_______________________________ 2-2 2.5 Storage ________________________________________________________ 2-2 Section 3 - Theory of Operation ................................................................................3-1 3.0 Theory of Operation _______________________________________________ 3-1 3.1 Applications ______________________________________________________ 3-2 3.1.1 SCPC Point-to-Point Links _________________________________________ 3-2 3.1.2 SCPC Point to Multi–Point Links in a Broadcast Application _______________ 3-2 3.1.3 DAMA (Demand Assigned Multiple Access) ___________________________ 3-3 3.1.4 TDMA (Time Division Multiple Access) Remote Site Application____________ 3-3 3.2 VME Demodulator Card Reed-Solomon ________________________________ 3-3 3.2.1 Reed-Solomon Codec ____________________________________________ 3-3 3.2 Clocking Options __________________________________________________ 3-4 3.2.1 RX Buffer Clock Options __________________________________________ 3-4 MN-VME2401 – Rev. B vii Table of Contents DD2401 VME L-Band Demodulator Card Installation & Operational Manual 3.2.1.1 RX SAT Clock _________________________________________________ 3-5 3.2.1.2 SCT: Serial Clock Transmit _______________________________________ 3-5 3.2.2 EXT REF: External Reference, J2 ___________________________________ 3-5 3.2.3 Reed-Solomon Operation in the DD2401 VME Demodulator Card __________ 3-5 3.2.4 Reed-Solomon Code Rate _________________________________________ 3-5 3.2.5 Interleaving_____________________________________________________ 3-6 Section 4 - User Interfaces ........................................................................................4-1 4.0 User Interfaces ___________________________________________________ 4-1 4.1 Remote Port Control (J3) ___________________________________________ 4-1 4.2 Terminal Mode Control (J1) _________________________________________ 4-1 4.3 Terminal Port User Interface _________________________________________ 4-2 4.3.1 Connecting the Terminal __________________________________________ 4-2 4.3.2 Terminal Screens ________________________________________________ 4-3 4.4 Remote Port User Interface _________________________________________ 4-6 4.4.1 Protocol Structure _______________________________________________ 4-6 4.4.2 Protocol Wrapper ________________________________________________ 4-6 4.4.3 Frame Description and Bus Handshaking _____________________________ 4-8 4.4.4 Global Response Operational Codes_________________________________ 4-8 4.4.5 Collision Avoidance _____________________________________________ 4-10 4.4.6 Software Compatibility ___________________________________________ 4-11 4.4.7 Flow Control and Task Processing _________________________________ 4-11 4.4.8 RLLP Summary ________________________________________________ 4-12 4.4.9 DD2401/DD2401L Opcode Command Set ___________________________ 4-13 4.4.11 Module Command Set __________________________________________ 4-14 4.4.12 Detailed Command Descriptions __________________________________ 4-14 4.4.12.1 DMD2401 Demodulator _______________________________________ 4-14 4.4.12.2 Module Queries & Commands __________________________________ 4-35 4.4.12.3 Default Values Demodulator ____________________________________ 4-39 Section 5 - Rear Panel Interfaces ..............................................................................5-1 5.0 DD2401 VME Demodulator Card Connections ___________________________ 5-1 5.1 Power ________________________________________________________ 5-2 5.1.1 Diagnostic LED's ________________________________________________ 5-2 5.2 Terrestrial Data I/F ________________________________________________ 5-3 viii MN-VME2401 – Rev. B DD2401 VME L-Band Demodulaor Card Installation & Operational Manual Table of Contents 5.3 EXT REF ________________________________________________________ 5-4 5.4 SERIAL CONTROL I/F _____________________________________________ 5-4 5.5 RX IN ________________________________________________________ 5-4 5.5.1 L-Band ________________________________________________________ 5-4 5.6 Remote Port _____________________________________________________ 5-4 5.7 Remote Addresses ________________________________________________ 5-5 Section 6 - Maintenance and Troubleshooting ........................................................6-1 6.0 Periodic Maintenance ______________________________________________ 6-1 Section 7 - Technical Specifications .........................................................................7-1 7.0 Introduction ______________________________________________________ 7-1 7.1 Receive Data Rates _______________________________________________ 7-1 7.2 Demodulator Specifications _________________________________________ 7-1 7.3 Options ________________________________________________________ 7-1 7.4 Environmental ____________________________________________________ 7-1 7.5 Physical ________________________________________________________ 7-2 7.6 BER Charts ______________________________________________________ 7-3 7.7 AGC Curve _____________________________________________________ 7-12 Glossary..................................................................................................................... G-1 MN-VME2401 – Rev. B ix Table of Contents x DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Introduction 1.0 Introduction 1 Description The Radyne DD2401 VME L-Band Demodulator is intended for use as apart of the receiving ground equipment in a satellite communication system. The card based unit is designed to receive a single carrier up to 5 MBits/s throughput on the RS422 synchronous interfaces. The DD2401 VME card is compatibility with all Radyne's DMD products including the DMD20, DMD50 and OM20. Figure 1-1. DD2401 VME L-Band Demodulator Card The DD2401 VME Demodulator Card is designed to perform at one end of the satellite Single Channel Per Carrier (SCPC) Link receiving the carrier. The VME can be used in a Mesh or Star Topology Network. The Demodulator supports BPSK, QPSK, OQPSK or 8PSK demodulation. The demodulator can be accessed via a single RS485 serial link system for complete remote monitor and control (M&C) capability and offers the terminal control via an RS232 connection. Selection of any data rate is provided over the following ranges: BPSK: QPSK: OQPSK: 8PSK: 9.6 Kbps to 1200 Kbps 9.6 Kbps to 4.375 Mbps 9.6 Kbps to 4.375 Mbps 64.0 Kbps to 5.0 Mbps The VME Demodulator Card can track and acquire a carrier over a programmable range of ± 1 kHz to ± 42 kHz. Acquisition times of less than three seconds are typical at data rates greater than 64 Kbps over a range of ± 25 kHz. To facilitate link testing, the VME Demodulator Card incorporates a built-in ‘2047’ test pattern with BER measurement capability. MN-VME2401 – Rev. B 1-2 Introduction 1.1 DD2401 VME L-Band Demodulator Card Installation & Operational Manual DD2401 VME L-Band Demodulator Card Available Options Various options are available for the DD2401 VME L-Band Demodulator Card: 1.1.1 Reed-Solomon Codec (Optional) The VME Demodulator Card is equipped with an Intelsat Reed-Solomon Outer Codec with an -10 interleaver as an optional enhancement for applications requiring Bit Error Rates (BER) of 10 . The encoder and decoder are completely independent and meet the IESS-308/309 Specification. 1.1.2 Turbo Codec (Optional) The VME Card is equipped with Turbo Product Code (TPC) Codec. TPC Codes include 0.495 and 0.793, 21/44, 1/2, 3/4 and 7/8 Rate. 1.1.3 8PSK (Optional) The VME Card offers in addition to the standard B/O/QPSK waveforms an 8PSK optional high order waveform capable of either Trellis 2/3 or any TPC 0.495, TPC0.793, TPC 3/4 and TPC 7/8 when purchased wit the Turbo option. 1-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B Introduction 1-2 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Installation Installation 2 This section provides unpacking and installation instructions, and a description of external connections. 2.0 Installation Requirements The VME2401 demodulator card is designed to be installed within any standard VME-compliant cabinet. 2.1 Unpacking The VME Demodulator Card was carefully packaged to avoid damage and should arrive complete with the following items for proper installation: 1. 2. 2.2 VME L-Band Demodulator Card Installation and Operation Manual Removal and Assembly If using a knife or cutting blade to open the carton, exercise caution to insure that the blade does not extend into the carton, but only cuts the tape holding the carton closed. Carefully unpack the unit and ensure that all of the above items are in the carton. 2.3 Mounting Considerations When mounted in an equipment cabinet, adequate ventilation must be provided. The ambient temperature in the cabinet should preferably be between 10° and 35° C, and held constant for best equipment operation. The air available to the cabinet should be clean and relatively dry. The unit should not be placed immediately above a high heat or EMF generator to ensure the output signal integrity and proper receive operation. 2.4 Demodulator Checkout The following descriptions assume that the VME Demodulator Card is installed in a suitable chassis. 2.4.1 Initial Power-Up The VME Demodulator Card is shipped from the factory with preset factory defaults. upon initial power-up, a user check should be performed to verify the shipped demodulator configuration. The following are standard VME Demodulator Card Factory Configuration Settings: Data Rate: Forward Error Correction (FEC): Frequency: Interface: MN-VME2401 – Rev. B 2,048 Kbps 1/2 Rate Viterbi 950 MHz (L-Band) RS422 2-1 Installation DD2401 VME L-Band Demodulator Card Installation & Operational Manual The connector definitions and pinout tables are shown in section 5.0. Any connection interfacing to the modem must be the appropriate mating connector. Shielded cables with the shield terminated to conductive backshells are required in order to meet EMC directives. Cables with insulation flammability ratings of 94 VO or better are required in order to meet Low Voltage Directives. 2.4.2 Factory Terminal Setup (Refer to Section 4.4) The factory terminal setup is as follows: Emulation Type: Baud Rate: Data Bits Parity: Stop Bits: VT-100 (can be changed) 19200 8 No Parity (Fixed) 1 2.4.3 Remote Protocol Factory Default Setup Demodulator will be configured with default settings when they are shipped from factory. Refer to Section 5-6 to Defaults setting can be modified may be the default settings for the RS485 Communication port are: Table 2-1. S1 DIP Switches Demodulator Demodullator 2.5 Position 1 Position 2 Position 3 Position 4 Address in Decimal on off off off 33 Storage It is recommended that the unit be stored in its original sealed packaging. The unit should be stored in a dry location where the temperature is stable, away from direct contact with rain, snow, wind, sun or anything that may cause damage. 2-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B Installation 2-3 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Theory of Operation Theory of Operation 3.0 3 Theory of Operation The VME L-Band Demodulator Card is capable of receiving four L-Band signals between 9501750 MHz. The IF signals are then converted into data. The data is digitally filtered, passed through the Viterbi FEC, differentially decoded and descrambled before it is sent to the RS422 terrestrial interface. The RS422 data from each demodulator can be retrieving from the rear panels of each demodulator. DD2401 VME Block Diagram External Referance IF Input 950-1750 MHz -25 to -55 dBm Demodulator Card Reference Customer Data Terrestrial I/O Antenna Rx Baseband Processing Terrestrial Data Interface Demodulator RX RF Equipment Terminal Remote Serial Interfaces M&C Remote Port Modulator Interconnect Power Supply +5 VDC +12VDC -12VDC Figure 3-1. DD2401 VME Demodulator Block Diagram MN-VME2401 – Rev. B 3-1 Theory of Operation DD2401 VME L-Band Demodulator Card Installation & Operational Manual Figure 3-2. DD2401 VME L-Band Demodulator Block Diagram 3.1 Applications Following are just a few representative forms of satellite communications links and networks in which the DD2401 VME Demodulator Card may be used. 3.1.1 SCPC Point-to-Point Links The most straightforward application for a Satellite Demodulator is to serve as the Data Communications Equipment (DCE) for a Point-to-Point Data Link. When used in this mode, two demodulators located at two different sites are tuned to complementary transmit and receive frequencies. Each direction of the communications link may have the same or entirely different transmission parameters. In this application, it is typical that the link is established and maintained on a continuous basis, although a special “on demand” case is described later. 3.1.2 SCPC Point to Multi–Point Links in a Broadcast Application A broadcast application might involve the necessity of sending continuous or intermittent data from one source and “broadcasting” the information to many remote locations. For instance, constant pricing information and updates may be sent by a central location to many store locations. There may be minor return information from the remotes acknowledging receipt. Another broadcast application could be transmitting background music from a central location to many store sites. In this case, there would be no return path. The topology of the network in both of these broadcast examples would typically be called a “Star” Network. As shown in Figure 3-3, the shape of the configuration is drawn with the central “Hub” as the center of the star and the remotes as points of the star. In both cases the transmit frequency and other parameters are shared by the receiver of all the remotes. 3-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Theory of Operation Figure 3-3. Star Network Configuration 3.1.3 DAMA (Demand Assigned Multiple Access) If a telephone network is to be simulated with a virtual switch between demodulators carrying digitized voice information. A central computer might be used to assign a pair of frequencies for any conversation and send this connection information to the proper sites to set up the connection. In this application, a new network called a “Mesh” Network is required. Any of the voice demodulators at any site can be programmed to link with any other demodulator. The resulting link diagram looks like a mesh of interconnects. Since the frequencies can be assigned on demand, the network is called “Demand Assigned, Multiple Access,” or DAMA. 3.1.4 TDMA (Time Division Multiple Access) Remote Site Application In a TDMA Network, the central Hub continually transmits a stream of outbound data containing information for multiple remote sites, while the remote sites transmit back to the Hub on a timed basis. Each of these remotes is said to “burst” its information back on a specific frequency. This may be the same inbound frequency for all sites. Each of the remotes is responsible for accessing its own information from the outbound data stream by reading the address assigned to specific parts of the data. The TDMA Network usually looks like the Star network described above. The DD2401 VME Demodulator Card is specifically designed to be usable as the remote site Demodulator of a TDMA network when coupled with a proper “Burst” Demodulator at the hub site. 3.2 VME Demodulator Card Reed-Solomon 3.2.1 Reed-Solomon Codec Utilizing a Reed-Solomon (RS) Outer Codec concatenated with a convolutional inner codec is an effective way to produce very low error rates even for poor signal-to-noise ratios while requiring only a small increase in transmission bandwidth. Typically, concatenating an RS Codec requires an increase in transmission bandwidth of only nine to twelve percent while producing a greater than 2 dB improvement in Eb/No. RS is a block codec where K data bytes are fed into the MN-VME2401 – Rev. B 3-3 Theory of Operation DD2401 VME L-Band Demodulator Card Installation & Operational Manual encoder which adds 2t = (N - K) check bytes to produce an N byte RS Block. The RS Decoder can then correct up to “t” erred bytes in the block (refer to Figure 3-4 and Table 3-1). 3.2 Clocking Options The Demodulator supports a number of different clocking options that can be recovered from the satellite or the terrestrial links. The various clocking options allow users to determine which clock will best fit their applications. Figure 3-7 gives an overview on how the modem processes the various clocks for the Rx Buffer Clock source. RECEIVE INTERNAL EXTERNAL EXT REF REF FREQ SRC SCT CLK J10 NORMAL INVERTED SCT RT J19 BUFFER CLK POL BUFFER CLK SRC RX SAT RD CLOCK & DATA RECOVERY DEMODULATION DATA POLARITY INVERT NONE INV. BASEBAND INV. TERR DATA Figure 3-4. Clocking and Polarity Diagram 3.2.1 RX Buffer Clock Options The modem supports a number of RX Buffer clock options that can be recovered from the satellite, terrestrial links, internally or externally. The various clocking options allow users to determine which clock will best fit their applications. Figure 3-7 gives an overview on how the modem processes the various clocks for the Tx Clock and the Rx Buffer Clock. The modem allows users to select clock polarity and Rx Clocks may be independently locked. The following RX Buffer clock selections are available:  3-4 Rx Satellite Clock (Recovered from Satellite) MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual  Theory of Operation SCT (Internal Oscillator) 3.2.1.1 RX SAT Clock The RX Sat clock is recovered from the satellite that is received from the distant end. If selected the Buffer Clock is lock to the RX sat clock. 3.2.1.2 SCT: Serial Clock Transmit If SCT clock is selected as the RX Buffer clock source, then it should be configured for internal. SCT is sometimes referred to as Internal Timing or Send Timing (ST). 3.2.2 EXT REF: External Reference, J2 This is not actually a clock, but does have some clocking implications. When the external reference is used, the master oscillator within the modem is locked to the external reference, and the internal accuracy and stability of the unit assumes that of the External Reference. Therefore, not only are the transmit frequencies locked to the external reference, but the modem’s internal SCT Oscillator is locked to the external reference as well. External reference port input is specified at 0 to +6 dBm. 3.2.2 Reed-Solomon Operation in the DD2401 VME Demodulator Card When the Reed-Solomon Decoder is enabled, the signal is received and demodulated by the receiving unit, fed to a Viterbi Decoder for the first layer of error correction. After error correction by the Viterbi Decoder, the unique words are located and the data is deinterleaved and reformed into blocks. The R-S Decoder then corrects the leftover errors in each block. The data is then descrambled and output from the R-S Section. 3.2.3 Reed-Solomon Code Rate The R-S Code Rate is defined by (N, K) where N is the total R-S block size in bytes (data + check bytes) and K is the number of data bytes input into the R-S Encoder. The transmission rate expansion required by the R-S Codec is then defined by N/K. The DD2401 VME DEMODULATOR CARD allows any N or K setting up to N = 255, and K = 235 to allow tailoring of the code rate to meet system requirements, with the following restrictions: 1. 2. 3. 4. N/K must be less than 1.25 (25% maximum overhead). N-K must be between 2 and 20, and must be even. Maximum N = 255, Minimum N = 25. Maximum K = 253, Minimum K = 23. MN-VME2401 – Rev. B 3-5 Theory of Operation DD2401 VME L-Band Demodulator Card Installation & Operational Manual 3.2.4 Interleaving The DD2401 VME DEMODULATOR CARD allows for interleaving depths of 4 or 8 R-S blocks. This allows burst errors to be spread over 4 or 8 R-S blocks in order to enhance the error correcting performance of the R-S Codec. Figure 3-4. Reed Solomon Decoder Functional Block Diagram Table 3-1. Reed-Solomon Codes for IDR 2 Type of Service Data Rate (Kbps) R-S Code 1 (n, k, t) Bandwidth Expansion [ (n/k) -1 ] Interleaving Depth Maximum R-S Codec Delay (ms) Small IDR (with 16/15 O/H) 64 128 256 384 512 768 1024 1536 (126, 112, 7) (126, 112, 7) (126, 112, 7) (126, 112, 7) (126, 112, 7) (126, 112, 7) (126, 112, 7) (126, 112, 7) 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 4 4 4 4 4 4 4 4 115 58 29 19 15 10 8 5 IDR (with 96 Kbps O/H) 1544 2048 (225, 205,10) (219, 201, 9) 0.0976 0.0896 4 4 9 7 n = code length, k = information symbols and t = symbol error correcting capability. Design objective For the DD2401 VME Demodulator Card, the IDR Deframing must be supplied externally. 3-6 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces User Interfaces 4.0 4 User Interfaces There are two user interfaces available for DD2401 VME Demodulator Card. These are: a. b. 4.1 Remote Port – (J5) Access to all available demodulators Terminal – (J1) Independent connection to each demodulator Remote Port Control (J3) All demodulators can be controlled by an external Monitor & Control (M&C) system through a single Remote Port connection. Communication between the unit and the external system control computer is via a binary protocol. The Remote Port provides RS-485 capability and thus is used as a multi-drop control bus allowing a single external M&C computer to control all demodulators. The Remote Port Data is outlined starting with Section 4.4 below. 4.2 Terminal Mode Control (J1) Characters contained within the brackets < and > indicate pressing the appropriate key. The unit can be interactively monitored and controlled in the Terminal Mode, with a full screen presentation of current settings and status. Programming is accomplished by selecting the item to be modified and pressing the terminal key of the option number. For example, to change the Receive Data Rate, enter “33” at the terminal. The DD240/VME2401/MD2401 DEMODULATOR will respond by presenting the options available and requesting input. Two types of input may be requested. If the input is multiple choice, the desired choice is selected by pressing . When the desired option is displayed, press to select that option. The other possible input type requires a numerical input (such as entering a frequency or data rate). This type of input is followed by pressing or the carriage return key. An input can be aborted at any time by pressing . Invalid input keys cause an error message to be displayed on the terminal. The Terminal Control Mode supports a serial baud rate of 19200. The connection must be set for 8 data bits, 1 stop bit and no parity (8, N, 1). Three terminal emulations are supported: VT100, WYSE 50, and ADDS. The emulation type can be changed by pressing <$> (dollar sign) on the terminal keyboard. MN-VME2401 – Rev. B 4-1 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual 4.3 Terminal Port User Interface Each demodulator has a Terminal Port Connection (J1) that allows for complete control and monitoring of the demodulator parameters and functions via an RS-232 Serial Interface. The factory default setup parameters are as follows: Emulation Type: Baud Rate: Data Bits: Parity: Stop Bits: VT100 (can be changed) 19200 8 No Parity (Fixed) 1 stop bit 4.3.1 Connecting the Terminal 1. Connect the computer to the Remote Connector (J5) on the rear of the unit using the RS-232 Cable. 2. Enable the terminal by selecting Terminal Mode (located under the System Control Mode Menu) from the front panel. 3. Verify that your emulation software is set to the following:    8 data bits no parity 1 stop bit Modify the selection, if necessary, to match the settings (the Front Panel ‘SYSTEM’ Sub-Menu contains all the Terminal Emulation Controls). 4-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces 4.3.2 Terminal Screens Figure 4-1. Main Menu Figure 4-2. Demodulator Menu MN-VME2401 – Rev. B 4-3 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Figure 4-3. Event Buffer Menu Figure 4-4. Alarm/Status Menu 4-4 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Figure 4-5. Latched Alarm Status Menu Figure 4-6. Interface Controls Menu MN-VME2401 – Rev. B 4-5 User Interfaces 4.4 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Remote Port User Interface The Remote Port of the DD2401/DD2401L allows for complete control and monitor functions via an RS-485 or RS-232 Internal Dip Switch Configurable Serial Interface. Control and status messages are conveyed between the DD2401/DD2401L and the subsidiary modems and the host computer using packetized message blocks in accordance with a proprietary communications specification. This communication is handled by the Radyne Link Level Protocol (RLLP), which serves as a protocol ‘wrapper’ for the M&C data. Complete information on monitor and control software is contained in the following sections. 4.4.1 Protocol Structure The Communications Specification (COMMSPEC) defines the interaction of computer resident Monitor and Control software used in satellite earth station equipment such as Modems, Redundancy Switches, Multiplexers, and other ancillary support gear. Communication is bidirectional, and is normally established on one or more full-duplex 9600-baud multi-drop control buses that conform to EIA Standard RS-485. If a single device is placed on a single control bus, then the control bus may conform to EIA Standard RS-232. Each piece of earth station equipment on a control bus has a unique physical address, which is assigned during station setup/configuration or prior to shipment. Valid decimal addresses on one control bus range from 032 to 255 for a total of up to 224 devices per bus. Address 255 of each control bus is usually reserved for the M&C computer. 4.4.2 Protocol Wrapper The Radyne COMMSPEC is byte-oriented, with the Least Significant Bit (LSB) issued first. Each data byte is conveyed as mark/space information with one mark comprising the stop data. When the last byte of data is transmitted, a hold comprises one steady mark (the last stop bit). To begin or resume data transfer, a space (00h) substitutes this mark. This handling scheme is controlled by the hardware and is transparent to the user. A pictorial representation of the data and its surrounding overhead may be shown as follows: S1 S2 B0 B1 B2 B3 B4 B5 B6 B7 S1 S2, etc. The stop bit, S1 is a mark. Data flow remains in a hold mode until S1 is replaced by a space. If S1 is followed by a space, the space character is considered a start (ST) and not part of the actual data (B0 - B 7). The above byte-oriented protocol is standard for UART based serial communication ports such as Workstation or Personal Computer (PC) COM ports. COM ports should be configured for 8 data bits, no parity, and one stop bit. For example, for 9600-baud operation, COM ports should be configured as: 9600, 8, N, 1 The COMMSPEC developed for use with the Radyne Link Level Protocol (RLLP) organizes the actual monitor and control data within a shell, or ‘protocol wrapper’, that surrounds the data. The format and structure of the COMMSPEC message exchanges are described herein. Decimal numbers have no suffix; hexadecimal numbers end with a lower case h suffix and binary values have a lower case b suffix. Thus, 22 = 16h = 000010110b. The principal elements of a data frame, in order of occurrence, are summarized as follows: 4-6 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces - the message format header character, or ASCII sync character, that defines the beginning of a message. The character value is always 16h (1 Byte). - the Byte Count is the number of bytes in the field (two bytes). - the Source Identifier defines the multi-drop address origin. Note that all nodes on a given control bus have a unique address that must be defined (1 Byte). - The Destination Identifier serves as a pointer to the multi-drop destination device that indicates where the message is to be sent (1 Byte). -The FSN is a tag with a value from 0 through 255 that is sent with each message. It assures sequential information framing and correct equipment acknowledgment and data transfers (1 Byte). - The Operation Code field contains a number that identifies the message type associated with the data that follows it. Equipment under MCS control recognizes this code via firmware identification and subsequently steers the DATA accordingly to perform a specific function or series of functions. Acknowledgment and error codes are returned in this field (two bytes). <...DATA...> - The Data field contains the binary data bytes associated with the . The number of data bytes in this field is indicated by the value. - The checksum is the modulo 256 sum of all preceding message bytes, excluding the character (1 Byte). The checksum determines the presence or absence of errors within the message. In a message block with the following parameters, the checksurn is computed as shown in Table 4-4 below. Table 4-4. Checksum Calculation Example Byte Field Data Content Running Checksum (Byte 1) 00h = 00000000b 00000000b (Byte 2) 02h = 00000010b 00000010b F0h = 11110000b 11110010b 2Ah = 00101010b 00011100b 09h = 00001001b 00100101b (Byte 1) 00h = 00000000b 00100101b (Byte 2) 03h = 00000011b 00101000b (Byte 1) DFh = 11011111b 00000111b (Byte 2) FEh = 11111110b 00000101b Thus, the checksum is 00000101b; which is 05h or 5 decimal. Alternative methods of calculating the checksum for the same message frame are: 00h + 02h + F0h + 2Ah + 09h + 00h + 03h + DFh + FEh = 305h. Since the only concern is the modulo 256 (modulo 1 00h) equivalent (values that can be represented by a single 8-bit byte), the checksum is 05h. For a decimal checksum calculation, the equivalent values for each information field are: 0 + 2 + 240 + 42 + 9 + 0 + 3 + 223 + 254 = 773; 773/256 = 3 with a remainder of 5. This remainder is the checksum for the frame. 5 (decimal) = 05h = 0101b = MN-VME2401 – Rev. B 4-7 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual 4.4.3 Frame Description and Bus Handshaking In a Monitor and Control environment, every message frame on a control bus port executes as a packet in a loop beginning with a wait-for-SYNC-character mode. The remaining message format header information is then loaded, either by the M&C computer or by a subordinate piece of equipment (such as the DD2401/DD2401L) requesting access to the bus. Data is processed in accordance with the OPCODE, and the checksum for the frame is calculated. If the anticipated checksum does not match then a checksum error response is returned to the message frame originator. The entire message frame is discarded and the wait-for-SYNC mode goes back into effect. If the OPCODE resides within a command message, it defines the class of action that denotes an instruction that is specific to the device type, and is a prefix to the DATA field if data is required. If the OPCODE resides within a query message packet, then it defines the query code, and can serve as a prefix to query code DATA. The Frame Sequence Number (FSN) is included in every message packet, and increments sequentially. When the M&C computer or bus-linked equipment initiates a message, it assigns the FSN as a tag for error control and handshaking. A different FSN is produced for each new message from the FSN originator to a specific device on the control bus. If a command packet is sent and not received at its intended destination, then an appropriate response message is not received by the packet originator. The original command packet is then re-transmitted with the same FSN. If the repeated message is received correctly at this point, it is considered a new message and is executed and acknowledged as such. If the command packet is received at its intended destination but the response message (acknowledgment) is lost, then the message originator (usually the M&C computer) re-transmits the original command packet with the same FSN. The destination device detects the same FSN and recognizes that the message is a duplicate, so the associated commands within the packet are not executed a second time. However, the response packet is again sent back to the source as an acknowledgment in order to preclude undesired multiple executions of the same command. To reiterate, valid equipment responses to a message require the FSN tag in the command packet. This serves as part of the handshake/acknowledge routine. If a valid response message is absent, then the command is re-transmitted with the same FSN. For a repeat of the same command involving iterative processes, the FSN is incremented after each message packet. When the FSN value reaches 255, it overflows and begins again at zero. The FSN tag is a powerful tool that assures sequential information framing, and is especially useful where commands require more than one message packet. The full handshake/acknowledgment involves a reversal of source and destination ID codes in the next message frame, followed by a response code in the field of the message packet from the equipment under control. If a command packet is sent and not received at its intended destination, a timeout condition can occur because the packet originator does not receive a response message. On receiving devices slaved to an M&C computer, the timeout delay parameters may be programmed into the equipment in accordance with site requirements by Comtech EF Data prior to shipment, or altered by qualified personnel. The FSN handshake routines must account for timeout delays and be able to introduce them as well. 4.4.4 Global Response Operational Codes In acknowledgment (response) packets, the operational code field of the message packet is set to 0 by the receiving devices when the message intended for the device is evaluated as valid. The device that receives the valid message then exchanges the with the , sets the to zero in order to indicate that a good message was received, and returns the packet to the originator. This “GOOD MESSAGE” opcode is one of nine global responses. Global response opcodes are common responses, issued to the M&C 4-8 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces computer or to another device, that can originate from and are interpreted by all Radyne equipment in the same manner. These are summarized as follows (all opcode values are expressed in decimal form): Table 4-5. Response Opcodes Response Opcode Description Good Message Bad Parameter Bad Opcode Bad Checksum Command Not Allowed in LOCAL Mode Command Not Allowed in AUTO Mode Bad Destination Unable to Process Command Packet Too Long Opcode 0000h 00FFh 00FEh 00FDh 00FCh 00FBh 00FAh 00F9h 00F8h The following response error codes are specific to the DD2401/DD2401L: Response Opcode Description DPARM_MODE_ERROR DPARM_FREQUENCY_ERROR DPARM_DATARATE_ERROR DPARM_SWEEPBOUNDARY_ERROR DPARM_LEVELLIMIT_ERROR DPARM_DEMODULATIONTYPE_ERROR DPARM_CONVDECODER_ERROR DPARM_REEDSOLOMON_ERROR DPARM_DIFFERENTIALDECODER_ERROR DPARM_DESCRAMBLERCONTROL_ERROR DPARM_DESCRAMBLERTYPE_ERROR DPARM_SPECTRUM_ERROR DPARM_BUFFERCLOCK_ERROR DPARM_BUFFERCLOCKPOL_ERROR DPARM_INSERTMODE_ERROR DPARM_FRAMING_ERROR DPARM_OPERATINGMODE_ERROR DPARM_BERMEASUREPERIOD_ERROR DPARM_CIRCUITID_ERROR DPARM_TERRLOOPBACK_ERROR DPARM_BASELOOPBACK_ERROR DPARM_IFLOOPBACK_ERROR DPARM_INTERFACETYPE_ERROR DPARM_NOTIMPLEMENTED_ERROR DPARM_DATAINVERT_ERROR DPARM_SUMMARYFAULT_ERROR DPARM_EXTERNALEXCSOURCE_ERROR DPARM_BUFFERSIZEMSEC_ERROR DPARM_BUFFERSIZEBYTES_ERROR DPARM_ASYNCINTERFACETYPE_ERROR DPARM_BUFFERSIZEMSECBYTES_ERROR DPARM_IMPEDANCE_ERROR DPARM_INTERLEAVER_ERROR MDPARM_TIME_ERROR MDPARM_DATE_ERROR MN-VME2401 – Rev. B Opcode 0x0600 0x0601 0x0603 0x0604 0x0605 0x0608 0x0609 0x060A 0x060B 0x060C 0x060D 0x060E 0x0610 0x0611 0x0612 0x0615 0x0616 0x0619 0x061A 0x061B 0x061C 0x061D 0x061E 0x0622 0x0623 0x0624 0x0625 0x0629 0x062A 0x0630 0x0631 0x0632 0x0635 0x0A01 0x0A02 4-9 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual 4.4.5 Collision Avoidance When properly implemented, the physical and logical devices and ID addressing scheme of the COMMSPEC normally precludes message packet contention on the control bus. The importance of designating unique IDs for each device during station configuration cannot be overemphasized. One pitfall, which is often overlooked, concerns multi-drop override IDs. All too often, multiple devices of the same type are assigned in a direct-linked (“single-thread”) configuration accessible to the M&C computer directly. For example, if two DD2401/DD2401L Demodulators with different addresses (DESTINATION IDs) are linked to the same control bus at the same hierarchical level, both will attempt to respond to the M&C computer when the computer generates a multi-drop override ID of 22. If their actual setup parameters, status, or internal timing differs, they will both attempt to respond to the override simultaneously with different information or asynchronously in their respective message packets and response packets, causing a collision on the serial control bus. To preclude control bus data contention, different IDs must always be assigned to the equipment. If two or more devices are configured for direct-linked operation, then the M&C computer and all other devices configured in the same manner must be programmed to inhibit broadcast of the corresponding multi-drop override ID. The multi-drop override ID is always accepted by devices of the same type on a common control bus, independent of the actual DESTINATION ID. These override IDs with the exception of “BROADCAST” are responded to by all directly linked devices of the same type causing contention on the bus. The “BROADCAST” ID, on the other hand, is accepted by all equipment but none of them returns a response packet to the remote M&C. The following multi-drop override IDs are device-type specific, with the exception of “BROADCAST”. These are summarized below with ID values expressed in decimal notation: Directly-Addressed Equipment Multi-Drop Override ID Broadcast (all directly-linked devices) DMD-3000/4000, 4500 or 5000 Mod Section, DMD15 DMD-3000/4000, 4500 or 5000 Demod Section, DMD15 RCU-340 1:1 Switch RCS-780 1:N Switch RMUX-340 Cross-Connect Multiplexer CDS-780 Clock Distribution System SOM-340 Second Order Multiplexer DMD-4500/5000 Modulator Section DMD-4500/5000 Demodulator Section RCU-5000 M:N Switch DMD15 Modulator DMD15 Demodulator DMD15 Modem DVB3000/DVB3030/DM45/DM240 Video Modulator RCS20 M:N Switch RCS10 M:N Switch RCS11 1:1 Switch DD2401/DD2401L Demodulator Reserved For Future Equipment Types 00 01 02 03 04 05 06 07 08 09 10 20 21 22 23 24 25 26 27 28-31 Note that multi-drop override IDs 01 or 02 can be used interchangeably to broadcast a message to a DMD3000/4000 modem, or to a DMD4500/5000, or to a DMD15 modem. Comtech EF Data recommends that the multi-drop override IDs be issued only during system configuration as a bus 4-10 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces test tool by experienced programmers, and that they not be included in run-time software. It is also advantageous to consider the use of multiple bus systems where warranted by a moderate to large equipment complement. Therefore, if a DD2401/DD2401L is queried for its equipment type identifier, it will return a “27”. 4.4.6 Software Compatibility The DD2401/DD2401L RLLP is not software-compatible with the following previous Radyne products: RCU5000 and DMD4500. These products may not occupy the same bus while using this protocol as equipment malfunction and loss of data may occur. When Radyne equipment is queried for information (Query Mod, Query Demod, etc.) it responds by sending back two blocks of data; a non-volatile section (parameters that can be modified by the user) and a volatile section (status information). It also returns a count value that indicates how large the non-volatile section is. This count is used by M&C developers to index into the start of the volatile section. When new features are added to Radyne equipment, the control parameters are appended to the end of the non-volatile section, and status of the features, if any, are added at the end of the volatile section. If a remote M&C queries two pieces of Radyne equipment with different software revisions, they might respond with two different sized packets. The remote M&C MUST make use of the non-volatile count value to index to the start of the volatile section. If the remote M&C is not aware of the newly added features to the Radyne product, it should disregard the parameters at the end of the non-volatile section and index to the start of the volatile section. If packets are handled in this fashion, there will also be backward-compatibility between Radyne equipment and M&C systems. Remote M&C systems need not be modified every time a feature is added unless the user needs access to that feature. 4.4.7 Flow Control and Task Processing The original packet sender (the M&C computer) relies on accurate timeout information with regard to each piece of equipment under its control. This provides for efficient bus communication without unnecessary handshake overhead timing. One critical value is designated the InterFrame Space (FS). The Inter-Frame Space provides a period of time in which the packet receiver and medium (control bus and M&C computer interface) fully recover from the packet transmission/reception process and the receiver is ready to accept a new message. The programmed value of the Inter-Frame Space should be greater than the sum of the “turnaround time” and the round-trip (sender/receiver/bus) propagation time, including handshake overhead. The term “turnaround time” refers to the amount of time required for a receiver to be re-enabled and ready to receive a packet after having just received a packet. In flow control programming, the Inter-Frame Space may be determined empirically in accord with the system configuration, or calculated based on established maximum equipment task processing times. Each piece of supported equipment on the control bus executes a Radyne Link Level Task (RLLT) in accordance with its internal hardware and fixed program structure. In a flow control example, the RLLT issues an internal “message in” system call to invoke an I/0 wait condition that persists until the task receives a command from the M&C computer. The RLLT has the option of setting a timeout on the incoming message. Thus, if the equipment does not receive an information/command packet within a given time period, the associated RLLT exits the I/0 wait state and takes appropriate action. MN-VME2401 – Rev. B 4-11 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Radyne equipment is logically linked to the control bus via an Internal I/O Processing Task (IOPT) to handle frame sequencing, error checking, and handshaking. The IOPT is essentially a link between the equipment RLLT and the control bus. Each time the M&C computer sends a message packet, the IOPT receives the message and performs error checking. If errors are absent, the IOPT passes the message to the equipment’s RLLT. If the IOPT detects errors, it appends error messages to the packet. Whenever an error occurs, the IOPT notes it and discards the message; but it keeps track of the incoming packet. Once the packet is complete, the IOPT conveys the appropriate message to the RLLT and invokes an I/0 wait state (wait for next character). If the RLLT receives the packetized message from the sender before it times out, it checks for any error messages appended by the IOPT. In the absence of errors, the RLLT processes the received command sent via the transmitted packet and issues a “message out” system call to ultimately acknowledge the received packet. This call generates the response packet conveyed to the sender. If the IOPT sensed errors in the received packet and an RLLT timeout has not occurred, the RLLT causes the equipment to issue the appropriate error message(s) in the pending equipment response frame. To maintain frame synchronization, the IOPT keeps track of error-laden packets and packets intended for other equipment for the duration of each received packet. Once the packet is complete, the IOPT invokes an I/0 wait state and searches for the next character. 4.4.8 RLLP Summary The RLLP is a simple send-and-wait protocol that automatically re-transmits a packet when an error is detected, or when an acknowledgment (response) packet is absent. During transmission, the protocol wrapper surrounds the actual data to form information packets. Each transmitted packet is subject to time out and frame sequence control parameters, after which the packet sender waits for the receiver to convey its response. Once a receiver verifies that a packet sent to it is in the correct sequence relative to the previously received packet, it computes a local checksum on all information within the packet excluding the character and the fields. If this checksum matches the packet , the receiver processes the packet and responds to the packet sender with a valid response (acknowledgment) packet. If the checksum values do not match, the receiver replies with a negative acknowledgment (NAK) in its response frame. The response packet is therefore either an acknowledgment that the message was received correctly, or some form of a packetized NAK frame. If the sender receives a valid acknowledgment (response) packet from the receiver, the increments and the next packet is transmitted as required by the sender. However, if a NAK response packet is returned, the sender re-transmits the original information packet with the same embedded . If an acknowledgment (response) packet or a NAK packet is lost, corrupted, or not issued due to an error and is thereby not returned to the sender, the sender re-transmits the original information packet; but with the same . When the intended receiver detects a duplicate packet, the packet is acknowledged with a response packet and internally discarded to preclude undesired repetitive executions. If the M&C computer sends a command packet and the corresponding response packet is lost due to a system or internal error, the computer times out and re-transmits the same command packet with the same to the same receiver and waits once again for an acknowledgment or a NAK packet. To reiterate, the format of the message block is shown in Table B-4, Link Level Protocol Message Block. SYNC 4-12 COUNT Table 4-6. Link Level Protocol Message Block SOURCE DESTINATION FSN OPCODE DATA CHECKSUM MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual ADDRESS ADDRESS User Interfaces BYTES The RLLP Remote Port Packet structure is as follows: Message format header character that defines the beginning of a message. The character value is always 0x16. (1 byte) Number of bytes in the field. (2 bytes) originated. (1 byte) Identifies the address of the equipment from where the message Identifies the address of the equipment where the message is to be sent. (1 byte) Frame sequence number ensures correct packet acknowledgment and data transfers. (1 byte) This byte identifies the message type associated with the information data. The equipment processes the data according to the value in this field. Return error codes and acknowledgment are also included in this field. (2 bytes) <...DATA...> Information data. The number of data bytes in this field is indicated by the value. The modulo 256 sum of all preceding message bytes excluding the character. (1 byte) 4.4.9 DD2401/DD2401L Opcode Command Set The DD2401/DD2401L Opcode Command Set is listed below, separated by commands that control the demodulator, or the entire module. 4.4.10 Demodulator Command Set RLLP Command Query Demodulator All Query Demod Latched Alarms Query Demod Current Alarms Query Demod Status Query Demod Eb/No, Input Level, Raw BER, Corrected BER, and Frequency Offset, AGC Voltage Query Demod Lock Status Command Demod All Command Demod Frequency Command Demod Data Rate Command Demod Sweep Boundary Command Demod Demodulation Type Command Demod Convolutional Decoder Command Demod Differential Decoder Command Demod Reed-Solomon Command Demod Descrambler Command Demod Descrambler Type Command Demod Spectrum Command Demod Buffer Clock Command Demod Buffer Clock Polarity MN-VME2401 – Rev. B Opcode 2401h 2406h 2409h 240Ch 240Dh 2437h 2A00h 2A01h 2A02h 2A04h 2A07h 2A08h 2A09h 2A0Ah 2A0Dh 2A0Eh 2A0Fh 2A11h 2A12h 4-13 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Command Demod Operating Mode Command Demod BER Measure Period Command Demod Terrestrial Loopback Command Demod Baseband Loopback Command Demod Center Buffer Command Demod Data Invert Command Demod Buffer Size Time/Bytes 2A17h 2A1Ah 2A1Ch 2A1Dh 2A20h 2A21h 2A31h 4.4.11 Module Command Set RLLP Command Query Module Identification Query Module Current Alarms Query Module Time Query Module Date Query Module Time and Date Command Module Control Mode Command Module Ext Ref Source Command Mod Ext Ref Frequency Command Module Clear Latched Alarms Command Module Set Time Command Module Set Date Command Module Set Time and Date Command Module Soft Reset Command Module Eb/No Threshold Command Module Default Configuration 1 2 Opcode 2403h 240Ah 240Eh 240Fh 2410h 2600h 2616h 261Bh 2C03h 2C04h 2C05h 2C06h 2C07h 2C08h 2C30h Applies to base band frequency modems only. Applies to LB/ST modem configurations only. 4.4.12 Detailed Command Descriptions 4.4.12.1 DMD2401 Demodulator Note: All bytes preceded by a * are not applicable to the DD2401/DD2401L and should be considered as reserved and there returned values ignored. Opcode: <2401h> Query a Demodulator’s Configuration and Status Query Response <1> Number of Nonvol bytes <4> Frequency See Paragraph B.6. This is the number of configuration bytes and is an offset to the start of the status block. Configuration Bytes Binary Value, 1 Hz Steps <4> Data Rate Binary Value, 1 bps Steps <1> Sweep Boundary Sweep Limits (Max of ± 4  2 kHz) <4> External Reference Unsigned Binary Value in Hz 4-14 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces <1> Freq. Reference Source 0 = Internal, 1 = External <1> Input Level Limit Lower Level Limit, Binary Value, 1 dB Steps, Negative Sign Implied <1> Demodulation Type 0 = QPSK, 1 = BPSK, 2 = 8PSK, 4 = OQPSK <1> Convolutional Decoder 0 = None, 1 = Viterbi 1/2 Rate, 3 = Viterbi 3/4 Rate, 5 = Viterbi 7/8 Rate, 7 = Sequential 1/2 Rate, 9 = Sequential 3/4 Rate, 11 = Sequential 7/8 Rate, 14 = Trellis 2/3, 20 = TPC 0.793 2D, 21 = TPC 0.495 3D, 23 = TPC ½, 24 = TPC ¾, 25 = TPC 7/8, 26 = TPC 21/44 <1> Reed-Solomon 0 = Disable, 1 = Enable <1> Reed-Solomon N Unsigned Binary <1> Reed-Solomon K Unsigned Binary <1> Reed-Solomon T Unsigned Binary <1> RS Interleaver Depth Unsigned Binary, 4 or 8 <1> Differential Decoder 0 = Off, 1 = On <1> Descrambler Control 0 = Disable, 1 = Enable <1> Descrambler Type 0 = None, 1 = IBS Scrambler, 2 = V35_IESS, 3 = V35_CCITT, 4 = V35_EFDATA, 6 = OM73, 7 = Reed-Solomon Scrambler, 8 = V35_EFRS, 9 = TPC Scrambler <1> Spectrum 0 = Normal, 1 = Inverted <4> Buffer Size Byte 1 - 2 = Buffer Size in ms Byte 3 - 4 = Buffer Size in Bytes <1> Buffer Clock 0 = External, 1 = Internal, 2 = EXC, 3 = RX SAT <1> Buffer Clock Polarity 0 = Normal, 1 = Inverted <1> Operating Mode 0 = Normal, 1 = 2047 Test <1> Alarm 1 Mask Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC/Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault) Bit 7 = Receive Forced Alarm (0 = Mask, 1 = Allow) <1> Alarm 2 Mask Bit 0 = Buffer Underflow MN-VME2401 – Rev. B 4-15 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Alarm Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Mask, 1 = Allow) <1> Alarm 3 Mask Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Loss (0 = Mask, 1 = Allow) <1> Alarm 4 Mask Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Mask, 1 = Allow) <1> Common Alarm 1 Mask Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Mask, 1 = Allow) <1> Reserved Set to Zero <1> BER Measure Period Unsigned Binary Number of Bits in Measurement Period, in Powers 6 of Ten (ex: 6 = 10 Bits) <24> Rx Circuit ID 24 ASCII Characters <1> Rx Terrestrial Loopback 0 = Disabled, 1 = Enabled <1> Rx Baseband Loopback 0 = Disabled, 1 = Enabled *<1> Rx IF Loopback 0 = Disabled, 1 = Enabled <1> Reserved Ignore <1> Data Invert 0 = Normal, 1 = Invert 4-16 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Note: The following byte applies only if an Asynchronous, IDR or IBS Interface is installed. If not, ignore. *<1> Async Framing 0 = No Framing, 1 = 1/16 Async, 2 = 1/16 IBS, 3 = 96 Kbit IDR Note: The following byte applies only if an asynchronous interface card is installed. If not, ignore. *<1> Async Baud Rate 0 = 1200, 1 = 2400, 2 = 4800, 3 = 9600, 4 = 19200, 5 = 50, 6 = 110, 7 = 300, 8 = 600 Note: The following byte applies only if an asynchronous interface card is installed. If not, ignore. *<1> Async Port Type 0 = RS-232, 1 = RS-485 Note: The following byte applies only if an asynchronous interface card is installed. If not, ignore. *<1> Async Terrestrial Interface Type 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following byte applies only if a synchronous Multiprotocol interface card is installed. If not, ignore. *<1> Multiprotocol Interface Card Interface Type 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following byte applies only if a symmetric G.703 interface card is installed. If not, ignore. *<1> G.703 Interface Type 0 = G703T1AMI, 1 = G703T1B8ZS, 2 = G703BE1, 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type. <1> BPSK Symbol Pairing 0 = Normal, 1 = Swapped Note: The following byte applies only if an IDR OR IBS interface card is installed. If not, ignore. <1> Receive Mode 0 = Closed Net Mode, 1 = IDR Mode, 2 = IBS Mode, 3 = D&I Mode Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore *<1> T1/E1 Frame Source 0 = Internal, 1 = External Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore MN-VME2401 – Rev. B 4-17 User Interfaces *<1> Receive IDR Overhead Mode DD2401 VME L-Band Demodulator Card Installation & Operational Manual 0 = Voice, 1 = 64 K Data Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore *<1> Receive IDR / IBS Backward Alarms Mask Bit 0 = IDR Backward Alarm 1 / IBS Backward Alarm Bit 1 = IDR Backward Alarm 2 Bit 2 = IDR Backward Alarm 3 Bit 3 = IDR Backward Alarm 4 Bits 4 - 7 = Spares (0 = Mask, 1 = Allow) Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore *<1> Interface Type If G.703 Daughter Card Installed 0 = G.703 Unbalanced E1, 1 = G.703 Balanced E1, 2 = G.703 T1, B8ZS If synchronous Multiprotocol daughter card is installed: 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following two bytes apply only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore *<2> Receive ESC Audio #1 Volume -20 to +10, Signed Binary Value in dB Note: The following two bytes apply only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, ignore *<2> *<1> *<1> *<30> *<1> 4-18 Receive ESC Audio #2 Volume -20 to +10, Signed Binary Value in dB Alarm 5 Mask Bit 0 = IBS Satellite Multiframe Fault Bit 1 = IBS Satellite Frame Fault Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10-03 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Mask, 1 = Allow) Insert Mode 0 = Disable, 1 = T1-D4, 2 = T1-ESF, 3 = PCM-30, 4 = PCM-30C, 5 = PCM-31, 6 = PCM-31C, 7 = T1-SLC96, 8 = T1-D4-S, 9 = T1-ESF-S Insert Map Mapping of Satellite Channels to insert Terrestrial Timeslots Insert Alarm Mask Bit 0 = Frame Lock Fault MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Mask, 1 = Allow) *<1> Insert Back Alarm Mask Bit 0 = Backward Alarm Received from Satellite Bits 1 – 7 = Spares (0 = Mask, 1 = Allow) Force Terrestrial Back Alarm Force D&I Terrestrial Backward Alarm to be Trans (0 = Not Forced, 1 = Forced) *<1> *<30> Insert Edit Map *<1> Rx Impedance 1 <1> TPC Interleaver 0 = 75 ohms, 1 = 50 Ohms 0 = Disable Interleaver, 1 = Enable Interleaver Status Bytes Decimal Point Implied <1> Revision Number <1> Alarm 1 Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 Spares (0 = Pass, 1 = Fail) <1> Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Fault (0 = Pass, 1 = Fail) <1> Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault MN-VME2401 – Rev. B 4-19 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Common Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignore <1> Latched Alarm 1 Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Latched Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Pass, 1 = Fail) <1> Latched Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync Fault (0 = Pass, 1 = Fail) <1> Latched Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) 4-20 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces <1> Latched Comm. Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignore <4> Error Counter Unsigned Binary Value <4> Test 2047 Error Counter Unsigned Binary Value <2> Raw BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Raw BER <2> Corrected BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Corrected BER <2> Eb/No Unsigned Binary Value, 2 Decimal Places Implied <4> Offset Frequency Unsigned Binary Value in Hz, Pos/Neg Indicated Below <2> Test 2047 Mantissa Bytes 1 - 2 = Unsigned Binary Value Test 2047 BER <1> Raw BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Corrected BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Test 2047 BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Offset Frequency Sign 0 = Offset Frequency Pos, 1 = Offset Frequency Neg <1> BER/EbNo Status Bit 0 = Raw BER and Corrected BER Status (1 = Valid) Bit 1 = Test 2047 BER Status (1 = Valid) Bits 2 - 3 = EbNo Status (0 = EbNo is Invalid, 1 = EbNo is Valid, 2 = EbNo is Smaller Than Indicated Value, 3 = EbNo is Greater Than Indicated Value) Bit 4 = Raw BER Counter Overflow (1 = overflow condition) Bit 5 = Test 2047 BER Counter Overflow (1 = overflow condition) Bits 6 & 7 = Spares <1> Buffer Percent Full Unsigned Binary Value Representing % Buffer Full (0 - 100 in 1% Steps) <1> Input Level Unsigned Binary Value in -1 dB Steps, Negative Sign Implied <1> Input Level State Signed Binary (0 = Equal to, 1 = Greater Than, -1 = Less Than Value MN-VME2401 – Rev. B 4-21 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual in -1 dB Steps, Negative Sign Implied) *<1> Alarm 5 Bit 0 = IBS Satellite Multiframe Loss Bit 1 = IBS Satellite Frame Loss Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10-03 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> Backward Alarms Bit 0 = IBS Backward Alarm or IDR Backward Alarm 1 Bit 1 = IDR Backward Alarm 2 Bit 2 = IDR Backward Alarm 3 Bit 3 = IDR Backward Alarm 4 Bits 4 – 7 = Spares (0 = Pass, 1 = Fail) *<1> Latched Alarms 5 Bit 0 = IBS Satellite Multiframe Loss Bit 1 = IBS Satellite Frame Loss Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10-03 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Control Mode 0 = Front Panel, 1 = Terminal, 2 = Computer RLLP *<1> Insert Alarms Bit 0 = Frame Lock Fault Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Pass, 1 = Fail) *<1> Insert Back Alarm Bit 0 = Backward Alarm Received from Satellite Bits 1 – 7 = Spares (0 = Pass, 1 = Fail) <1> AGC Voltage In Hex, decimal point implied. <4> Symbol Rate Binary value, 1 sps steps Opcode: <240Ch> Query a Demodulator’s Status <1> Revision Number <1> Alarm 1 4-22 Query response Decimal Point Implied Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Bit 3 = Rx AGC/Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Pass, 1 = Fail) <1> Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Fault (0 = Pass, 1 = Fail) <1> Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Common Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignore <1> Latched Alarm 1 Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarms (0 = Pass, 1 = Fail) MN-VME2401 – Rev. B 4-23 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual <1> Latched Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Rx FPGA Configuration Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Pass, 1 = Fail) <1> Latched Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Fault (0 = Pass, 1 = Fail) <1> Latched Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Latched Common Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignore <4> Error Counter Unsigned Binary Value <4> Test 2047 Error Counter Unsigned Binary Value <2> Raw BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Raw BER <2> Corrected BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Corrected BER <2> EbNo Unsigned Binary Value, 2 Decimal Places Implied <4> Offset Frequency Unsigned Binary Value in Hz, Pos/Neg Indicated Below 4-24 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces <2> Test 2047 BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Test 2047 BER <1> Raw BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Corrected BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Test 2047 BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Offset Frequency Sign 0 = Offset Frequency Pos, 1 = Offset Frequency Neg <1> BER/EbNo Status Bit 0 = Raw BER and Corrected BER Status (1 = Valid) Bit 1 = Test 2047 BER Status (1 = Valid) Bits 2 - 3 = EbNo Status (0 = EbNo is Invalid, 1 = EbNo is Valid, 2 = EbNo is Smaller Than Indicated Value, 3 = EbNo is Greater Than Indicated Value) Bit 4 = Raw BER Counter Overflow (1 = overflow condition) Bit 5 = Test 2047 BER Counter Overflow (1 = overflow condition) Bits 6 & 7 = Spares <1> Buffer Percent Full Unsigned Binary Value Representing % Buffer Full (0 - 100 in 1% steps) <1> Input Level Unsigned Binary Value in -1 dB Steps, Negative Sign Implied <1> Input Level State Signed Binary (0 = Equal to, 1 = Greater Than, -1 = Less Than Value in -1 dB Steps, Negative Sign Implied) *<1> Alarm 5 Bit 0 = IBS/IDR Satellite Multiframe Sync Loss Bit 1 = IBS/IDR Satellite Frame Sync Loss Bit 2 = Spare Bit 3 = IBS BER Alarm Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> Backward Alarms Bit 0 = IBS Backward Alarm or IDR Backward Alarm 1 Bit 1 = IDR Backward Alarm 2 Bit 2 = IDR Backward Alarm 3 Bit 3 = IDR Backward Alarm 4 Bits 4 - 7 = Spares (0 = Pass, 1 = Fail) *<1> Latched Alarm 5 Bit 0 = IBS/IDR Satellite Multiframe Sync Loss Bit 1 = IBS/IDR Satellite Frame Sync Loss Bit 2 = Spare Bit 3 = IBS BER Alarm Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare MN-VME2401 – Rev. B 4-25 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual (0 = Pass, 1 = Fail) <1> Control Mode 0 = Front Panel, 1 = Terminal, 2 = Computer RLLP *<1> Insert Alarms Bit 0 = Frame Lock Fault Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Pass, 1 = Fail) *<1> Insert Back Alarm <1> AGC Voltage <4> Symbol Rate Bit 0 = Backward Alarm Received from Satellite Bits 1 – 7 = Spares (0 = Pass, 1 = Fail) In Hex, decimal point implied. Binary value, 1 sps steps Opcode: <2406h> Query a Demodulator’s Latched Alarms Query response Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Latched Alarm 1 <1> Latched Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 -7 = Spares (0 = Pass, 1 = Fail) <1> Latched Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Fault (0 = Pass, 1 = Fail) <1> Latched Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault 4-26 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Latched Comm. Alarm 1 Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> Latched Alarm 5 Bit 0 = IBS/IDR Satellite Multiframe Sync Loss Bit 1 = IBS/IDR Satellite Frame Sync Loss Bit 2 = Spare Bit 3 = IBS BER Alarm Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Pass, 1 = Fail) Opcode: <2409h> Query a Demodulator’s Current Alarms Query response Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC/Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Alarm 1 <1> Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 Spares (0 = Pass, 1 = Fail) <1> Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync Fault MN-VME2401 – Rev. B 4-27 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual (0 = Pass, 1 = Fail) <1> Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Common Alarm 1 Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> Alarm 5 Bit 0 = IBS/IDR Satellite Multiframe Sync Loss Bit 1 = IBS/IDR Satellite Frame Sync Loss Bit 2 = Spare Bit 3 = IBS BER Alarm Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> Insert Alarms Bit 0 = Frame Lock Fault Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Pass, 1 = Fail) Opcode: <240Dh> Query a Demodulator’s Eb/No, BER, Level, and AGC Voltage Query response Bytes 1 - 2 = Unsigned Binary Value Raw BER <2> Raw BER Mantissa <2> Corrected BER Mantissa Bytes 1 - 2 = Unsigned Binary Value Corrected BER <2> EbNo Unsigned Binary Value, 2 Decimal Places Implied <1> Raw BER Exponent Byte 3 = Unsigned Binary Value Exponent <1> Corrected BER Byte 3 = Unsigned Binary Value Exponent 4-28 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Exponent <1> BER/EbNo Status Bit 0 = Raw BER and Corrected BER Status (1 = Valid) Bit 1 = Test 2047 BER Status (1 = Valid) Bits 2 - 3 = EbNo Status (0 = EbNo is Invalid, 1 = EbNo is Valid, 2 = EbNo is Smaller Than Indicated Value, 3 = EbNo is Greater Than Indicated Value) Bit 4 = Raw BER Counter Overflow (1 = overflow condition) Bit 5 = Test 2047 BER Counter Overflow (1 = overflow condition) Bits 6 & 7 = Spares <1> Input Level Binary Value in -1 dB Steps, Negative Sign Implied <1> Input Level State Signed Binary (0 = Equal to, 1 = Greater Than, -1 = Less Than Value in -1 dB Steps, Negative Sign Implied) <1> AGC Voltage In Hex, decimal point implied. Opcode: <2437h> <1> Query a Demodulator’s Lock Status Query response Bit 0 = Demod Chipset Lock (0 = Unlocked, 1 = Locked) Bit 1 = Viterbi Lock (0 = Unlocked, 1 = Locked) Bit 2 = Reed-Solomon Lock (0 = Unlocked, 1 = Locked) Bit 3 = Sequential Lock (0 = Unlocked, 1 = Locked) Bits 4 – 7 = Spares (Decoders not in use default to locked state) Lock Status Opcode: <2A00h> Command a Demodulator’s Configuration <4> Frequency Binary Value, 1 Hz Steps <4> Data Rate Binary Value, 1 BPS Steps <1> Sweep Boundary Sweep Limits, Max of ± 42 kHz <4> External Reference Unsigned Binary Value in Hz <1> Freq. Reference Source 0 = Internal, 1 = External <1> Input Level Limit Lower Level Limit, Binary Value, 1 dB Steps, Negative Sign Implied <1> Demodulation Type 0 = QPSK, 1 = BPSK, 2 = 8PSK, 4 = OQPSK <1> Convolutional Decoder 0 = None, 1 = Viterbi 1/2 Rate, 3 = Viterbi 3/4 Rate, 5 = Viterbi 7/8 Rate, 7 = Sequential 1/2 Rate, 9 = Sequential 3/4 Rate, 11 = Sequential 7/8 Rate, 14 = Trellis 2/3, 20 = TPC 0.793 2D, 21 = TPC 0.495 3D, 23 = TPC ½, 24 = TPC ¾, 25 = TPC 7/8, 26 = TPC 21/44 <1> Reed-Solomon 0 = Disable, 1 = Enable <1> Reed-Solomon N Unsigned Binary <1> Reed-Solomon K Unsigned Binary MN-VME2401 – Rev. B 4-29 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual <1> Reed-Solomon T Note: Always set to Zero; as the T value is calculated from N and K. <1> RS Interleaver Depth Unsigned Binary, 4 or 8 <1> Differential Decoder 0 = Off, 1 = On <1> Descrambler Control 0 = Disable, 1 = Enable <1> Descrambler Type 0 = None, 1 = IBS Scrambler, 2 = V35_IESS, 3 = V35_CCITT, 4 = V35_EFDATA, 6 = OM73, 7 = Reed Solomon Scrambler, 8 = V35_EFRS, 9 = TPC Scrambler <1> Spectrum 0 = Normal, 1 = Inverted <4> Buffer Size Byte 1 – 2 = Buffer Size in ms Byte 3 - 4 = Buffer Size in Bytes <1> Buffer Clock 0 = External, 1 = Internal, 2 = EXC, 3 = RX SAT <1> Buffer Clock Polarity 0 = Normal, 1 = Inverted <1> Operating Mode 0 = Normal, 1 = 2047 Test <1> Alarm 1 Mask Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Mask, 1 = Allow) <1> Alarm 2 Mask Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Fault Bit 5 = Rx LNB Fault, LBST Only Bit 6 - 7 = Spares (0 = Mask, 1 = Allow) <1> Alarm 3 Mask Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync Fault (0 = Mask, 1 = Allow) 4-30 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces <1> Alarm 4 Mask Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Mask, 1 = Allow) <1> Common Alarm 1 Mask Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V alarm Bit 3 = Temperature Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Mask, 1 = Allow) <1> Reserved Set to Zero <1> BER Measure Period Unsigned Binary Number of Bits in Measurement Period in Powers of 6 Ten (ex: 6 = 10 Bits) <24> Rx Circuit ID 24 ASCII Characters <1> Rx Terrestrial Loopback 0 = Disabled, 1 = Enabled <1> Rx Baseband Loopback 0 = Disabled, 1 = Enabled *<1> Rx IF Loopback 0 = Disabled, 1 = Enabled <1> Reserved Set to Zero <1> Data Invert 0 = Normal, 1 = Invert Note: The following byte applies only if an Asynchronous, IDR or IBS Interface is installed. If not, set to zero. *<1> Framing 0 = No Framing, 1 = 1/16 Async, 2 = 1/16 IBS, 3 = 96 Kbit IDR Note: The following byte applies only if an asynchronous interface card is installed. If not, set to zero. *<1> Async Baud Rate 0 = 1200, 1 = 2400, 2 = 4800, 3 = 9600, 4 = 19200, 5 = 50, 6 = 110, 7 = 300, 8 = 600 Note: The following byte applies only if an asynchronous interface card is installed. If not, set to zero. *<1> Async Port Type 0 = RS-232, 1 = RS-485 Note: The following byte applies only if an asynchronous MN-VME2401 – Rev. B 4-31 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual interface card is installed. If not, set to zero. *<1> Async Terrestrial Interface Type 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following byte applies only if a synchronous Multiprotocol interface card is installed. If not, set to zero. *<1> Multiprotocol Interface Card Interface Type 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following byte applies only if a symmetric G.703 interface card is installed. If not, set to zero. *<1> G.703 Interface Type 0 = G703T1AMI, 1 = G703T1B8ZS, 2 = G703BE1, 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type <1> BPSK Symbol Pairing 0 = Normal, 1 = Swapped Note: The following byte applies only if an IDR OR IBS interface card is installed. If not, set to zero. <1> Receive Mode 0 = Closed Net Mode, 1 = IDR Mode, 2 = IBS Mode, 3 = Drop & Insert Mode Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, set to zero. *<1> T1/E1 Frame Source 0 = Internal, 1 = External Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, set to zero. *<1> Receive IDR Overhead Mode 0 = Voice, 1 = 64 K data *<1> Receive IDR / IBS Backward Alarms Mask Bit 0 = IDR Backward Alarm 1 / IBS Backward Alarm Bit 1 = IDR Backward Alarm 2 Bit 2 = IDR Backward Alarm 3 Bit 3 = IDR Backward Alarm 4 Bits 4 - 7 = Spares (0 = Mask, 1 = Allow) Note: The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, set to zero. *<1> 4-32 Interface Type If G.703 daughter card installed: MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces 0 = G.703 Unbalanced E1, 1 = G.703 Balanced E1, 2 = G.703 T1, B8ZS If synchronous Multiprotocol daughter card is installed: 0 = V.35, 1 = RS-422, 2 = RS-232 Note: The following two bytes apply only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, set to zero. *<2> Receive ESC Audio #1 Volume -20 to +10, Signed Binary Value in dB Note: The following two bytes apply only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode. If not, set to zero. *<2> Receive ESC Audio #2 Volume -20 to +10, Signed Binary Value in dB *<1> Alarm 5 Mask Bit 0 = IBS Satellite Multiframe Fault Bit 1 = IBS Satellite Frame Fault Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10-03 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bit 6 = Turbo Codec Lock Fault Bit 7 = Spare (0 = Mask, 1 = Allow) *<1> Insert Mode 0 = Disable, 1 = T1-D4, 2 = T1-ESF, 3 = PCM-30, 4 = PCM-30C, 5 = PCM-31, 6 = PCM-31C, 7 = T1-SLC96, 8 = T1-D4-S, 9 = T1-ESF-S *<30> Insert Map Mapping of Satellite Channels to Insert Terrestrial Timeslots *<1> Insert Alarm Mask Bit 0 = Frame Lock Fault Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Mask, 1 = Allow) *<1> Insert Back Alarm Mask Bit 0 = Backward Alarm Received from Satellite Bits 1 – 7 = Spares (0 = Mask, 1 = Allow) *<1> Force Terrestrial Back Alarm Force D&I Terrestrial Backward Alarm to be Trans (0 = Not Forced, 1 = Forced) *<30> Insert Edit Map *<1> Rx Impedance <1> TPC Interleaver MN-VME2401 – Rev. B 1 0 = 75 Ohms, 1 = 50 Ohms 0 = Disable Interleaver, 1 = Enable Interleaver 4-33 User Interfaces Opcode: <2A01h> <4> Command a Demodulator’s Sweep Boundary Set in 1 kHz Steps (Max of 42 kHz) Command a Demodulator’s Demodulation Type 0 = QPSK, 1 = BPSK, 2 = 8PSK, 4 = OQPSK Command a Demodulator’s Convolutional Decoder Convolutional Decoder Opcode: <2A09h> <1> Unsigned Binary Value in BPS Demodulation Type Opcode: <2A08h> <1> Command a Demodulator’s Data Rate Sweep Boundary Opcode: <2A07h> <1> Unsigned Binary Value in Hz Data Rate Opcode: <2A04h> <1> Command a Demodulator’s Frequency Frequency Opcode: <2A02h> <4> DD2401 VME L-Band Demodulator Card Installation & Operational Manual 0 = None, 1 = Viterbi 1/2 Rate, 3 = Viterbi 3/4 Rate, 5 = Viterbi 7/8 Rate, 7 = Sequential 1/2 Rate, 9 = Sequential 3/4 Rate, 11 = Sequential 7/8 Rate, 14 = Trellis 2/3, 20 = TPC 0.793 2D, 21 = TPC 0.495 3D, 23 = TPC ½, 24 = TPC ¾, 25 = TPC 7/8, 26 = TPC 21/44 Command a Demodulator’s Differential Decoder Differential Decoder Opcode: <2A0Ah> 0 = Off, 1 = On Command a Demodulator’s Reed-Solomon <1> Reed-Solomon 0 = Disable, 1 = Enable <1> Reed-Solomon N Unsigned Binary <1> Reed-Solomon K Unsigned Binary <1> Reed-Solomon T Note: Always set to Zero; as the T value is calculated from N and K. <1> RS Interleaver Depth Unsigned Binary, 4 or 8 Opcode: <2A0Dh> <1> Descrambler Control Opcode: <2A0Eh> <1> 0 = Disable, 1 = Enable Command a Demodulator’s Descrambler Type Descrambler Type Opcode: <2A0Fh> 4-34 Command a Demodulator’s Descrambler Control 0 = None, 1 = IBS Scrambler, 2 = V35_IESS, 3 = V35_CCITT, 4 = V35_EFDATA, 6 = OM73, 7 = Reed-Solomon Scrambler, 8 = V35_EFRS, 9 = TPC Scrambler Command a Demodulator’s Spectrum MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual <1> Spectrum Opcode: <2A11h> <1> Buffer Clock Opcode: <2A12h> <1> Buffer Clock Polarity Opcode: <2A17h> <1> Operating Mode Opcode: <2A1Ah> <1> BER Measure Period Opcode: <2A1Ch> <1> Rx Terrestrial Loopback Opcode: <2A1Dh> <1> Rx Baseband Loopback 0 = Normal, 1 = Inverted Command a Demodulator’s Buffer Clock 0 = External, 1 = Internal, 2 = EXC, 3 = RX SAT Command a Demodulator’s Buffer Clock Polarity 0 = Normal, 1 = Inverted Command a Demodulator’s Operating Mode 0 = Stop, 1 = 2047 Test Command a Demodulator’s BER Exponent Number of Bits in Measurement Period in Powers of Ten (ex: 6 = 10 Bits) 0 = Disabled, 1 = Enabled Command a Demodulator’s Baseband Loopback 0 = Disabled, 1 = Enabled Command Center Buffer (No Parameters) Opcode: <2A21h> Command a Demodulator’s Data Invert Data Invert Opcode: <2A31h> <4> Buffer Size 4.4.12.2 0 = Normal, 1 = Inverted Command a Demodulator’s Buffer Size Byte 1 - 2 = buffer size in ms OR Byte 3 - 4 = buffer size in bytes (Either ms or bytes must be specified - the other field should be 0xFFFF) Module Queries & Commands Opcode: <2403h> <1> 6 Command a Demodulator’s Terrestrial Loopback Opcode: <2A20h> <1> User Interfaces Modem ID Opcode: <240Eh> Query a Module’s Identification Query response DD2401/DD2401L Demodulator = 27 Query Time Query response <1> Hour 0 – 23 <1> Minute 0 – 59 <1> Second 0 – 59 MN-VME2401 – Rev. B 4-35 User Interfaces Opcode: <240Fh> DD2401 VME L-Band Demodulator Card Installation & Operational Manual Query Date Query response <1> Year 0 – 99 <1> Month 0 – 11 <1> Day 0 – 30 Opcode: <2410h> Query Time and Date Query response <1> Year 0 – 99 <1> Month 0 – 11 <1> Day 0 – 30 <1> Hour 0 – 23 <1> Minute 0 – 59 <1> Second 0 – 59 Opcode: <240Ah> Query Module Current Alarms Query response Bit 0 = Transmit Processor Fault Bit 1 = Transmit Output Power Level Fault Bit 2 = Transmit Oversample PLL Lock Fault Bit 3 = Composite Clock PLL Lock Fault Bit 4 = IF Synthesizer Lock Fault Bit 5 = Transmit FPGA Configuration Alarm Fault Bit 6 = Transmit Forced Alarm Bit 7 = External Reference PLL Lock Fault (0 = Pass, 1 = Fail) *<1> Modulator Alarm 1 Major Alarm *<1> Modulator Alarm 2 Minor Alarm Bit 0 = Terrestrial Clock Activity Detect Fault Bit 1 = Internal Clock Activity Detect Fault Bit 2 = Tx Sat Clock Activity Detect Fault Bit 3 = Tx Data Activity Detect Fault Bit 4 = Terrestrial AIS (Tx Data AIS Detect Fault) Bit 5 = Transmit Ext BNC Clock Activity Detect Fault Bit 6 = Transmit Reed-Solomon Fault Bit 7 = Tx Calibration Fault (0 = Pass, 1 = Fail) <1> Reserved Ignored <1> Demodulator Alarm 1 Bit 0 = Receive Processor Fault Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC/Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault 4-36 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Bit 7 = External Reference PLL Lock Fault (0 = Pass, 1 = Fail) <1> Demodulator Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Pass, 1 = Fail) <1> Demodulator Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 6 = External Reference PLL Lock Fault Bit 7 = Frame Sync Fault (0 = Pass, 1 = Fail) <1> Demodulator Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault Bit 1 = External BNC Activity Detect Fault Bit 2 = Rx Satellite Clock Activity Detect Fault Bit 3 = External Reference PLL Activity Fault Bit 4 = High Stability Activity Detect Fault Bit 5 = High Stability PLL Fault Bit 6 = Eb/No Threshold Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignored <1> Common Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1> Reserved Ignored *<1> Drop Alarm Status Bit 0 = Terrestrial Frame Lock Fault (all modes) Bit 1 = Terrestrial Multiframe Lock Fault (PCM-30 and PCM-30C only) Bit 2 = Terrestrial CRC Lock Fault (PCM-30C and PCM-31C only) Bit 3 = Terrestrial Yellow Alarm Received (T1 only) Bit 4 = Terrestrial FAS Alarm Received (E1 only) Bit 5 = Terrestrial MFAS Alarm Received (PCM-30 and PCM-30C only) Bit 6 = Loss of Terrestrial Signaling (reported by DSP) Bit 7 = Spare (0 = Pass, 1 = Fail) *<1> MN-VME2401 – Rev. B 4-37 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual Insert Alarms Opcode: <2600h> <1> 0 = Front Panel, 1 = Terminal, 2 = Computer Command a Module’s External Reference Source External Ref. Source Opcode: <261Bh> <4> Command a Modem’s Control Mode Modem Control Mode Opcode: <2616h> <1> Bit 0 = Frame Lock Fault Bit 1 = Multiframe Lock Fault Bit 2 = CRC Lock Fault. Valid only in T1-ESF and E1 – CRC enabled Bit 3 = T1 Yellow Alarm Received Bit 4 = E1 FAS Alarm Received Bit 5 = E1 MFAS Alarm Received Bit 6 = E1 CRC Alarm Received Bit 7 = CRC Calculation Fault (0 = Pass, 1 = Fail) 0 = Internal, 1 = External Command a Module’s External Reference Frequency External Ref. Freq. Unsigned Binary Value in Hz Opcode: <2C03h> Command Clear all Latched Alarms (No Parameters) Opcode: <2C04h> Command Set Time <1> Hour 0 - 23 <1> Minute 0 – 59 <1> Second 0 – 59 Opcode: <2C05h> Command Set Date <1> Year 0 – 99 <1> Month 0 – 11 <1> Day 0 - 30 Opcode: <2C06h> Command Set Time and Date <1> Year 0 – 99 <1> Month 0 – 11 <1> Day 0 – 30 <1> Hour 0 – 23 <1> Minute 0 – 59 <1> Second 0 – 59 4-38 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces Opcode: <2C07h> Command soft reset the modem to the power-up state (no parameters). Opcode: <2C08h> Commend Eb/No Threshold <1> Eb/No Threshold Opcode: <2C30h> 4.4.12.3 Unsigned Binary Value, 0-99, Implied Decimal Point 0.0 through 9.9 dB Command Module Set Default Configuration (No Parameters) Default Values Demodulator Opcode: <2A00h> Command a Demodulator’s Configuration <4> Frequency 70,000,000 Hz 140,000,000 Hz (**) 950,000,000 Hz (Hardware dependant) **Legacy 100-180 MHz only <04> <2C> <1D> <80> <08> <58> <3B> <00> 2,048,000 BPS <00> <1F> <40> <00> <38> <9F> <80> <4> Data Rate <1> Sweep Boundary 25 kHz <19> <4> External Reference 10,000,000 Hz <00> <98> <96> <80> Ext Reference Source 0 = Internal <1> <1> <1> <1> <1> <1> <1> <1> <1> Input Level Limit Demodulation Type Convolutional Decoder <5A> -90 dBm <00> 0 = QPSK <01> 1 = Viterbi ½ Rate Reed-Solomon <00> Reed-Solomon N 0 = Disable Reed-Solomon K 126 <70> Reed-Solomon T 112 <07> RS Interleaver Depth 7 <04> <1> <1> Differential Decoder <01> 1 = On 1 = Enable <1> Descrambler Type <4> Spectrum 2 = V35_IESS Buffer Size MN-VME2401 – Rev. B <7E> 4 Descrambler Control <1> <00> <01> <02> <00> <00> <01> 4-39 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual 0 = Normal <1> <00> <04> <1> Buffer Clock <1> Buffer Clock Polarity <1> Operating Mode 1 msec 4 Bytes <00> <00> 0 = SCTE 0 = Normal <00> <1> Alarm 1 Mask <1> Alarm 2 Mask 0 = Normal <1> Alarm 3 Mask No Alarms Masked <1> Alarm 4 Mask No Alarms Masked <1> Common Alarm 1 No Alarms Masked <1> Reserved No Alarms Masked <24> BER Measure Period No Alarms Masked <05> Rx Circuit ID No Alarms Masked 10 Bits <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> 24 ASCII Spaces <00> 5 <1> <1> Rx Terrestrial Loopback <1> Rx Baseband Loopback <1> Rx IF Loopback <00> 0 = Disabled <1> <00> Reserved <1> Data Invert 0 = Disabled <1> Async Mode <1> <00> 0 = Disabled <00> <00> <03> Async Baud Rate <1> <00> Async Port Type 0 = Normal <1> Async Terrestrial Interface Type <1> Multiprotocol Interface Type <1> G.703 Interface Type <1> <1> BPSK Symbol Pairing Receive Mode 4-40 <00> 0 = Async Off 3 = 9600 0 = RS-232 <00> <00> 0 = V.35 <00> 0 = V.35 <00> MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual User Interfaces <1> <1> <1> T1/E1 Frame Source 0 = G703T1AMI <00> Receive IDR Overhead Mode 0 = Normal <00> Receive IDR / IBS Backward Alarm Mask 0 = Closed Net <00> 0 = Internal <00> Interface Type 0 = Voice <2> <2> <1> <1> <0000> Receive ESC #1 Volume Receive ESC #2 Volume <30> Alarm 5 Mask Insert Mode 0 = G.703 balanced E1 (G.703 Daughter Card or Universal Daughter Card Installed) or V.35 (Synchronous Multiprotocol Daughter Card Installed) Insert Map 0 dB <1> 0 dB <1> <0000> <00> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> Insert Alarm Mask <1> Insert Backward Alarm Mask No Alarms Masked 0 = Disable <30> <00> Force Terrestrial Backward Alarm <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> <01> Insert Edit Map <1> No Alarms Masked <1> Rx Impedance TPC Interleaver No Alarms Masked <00> <01> 0 = Not Forced MN-VME2401 – Rev. B 4-41 User Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual 0 = 75 Ohms 1 = Enable Interleaver 4-42 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B User Interfaces 4-43 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Rear Panel Interfaces Rear Panel Interfaces 5.0 5 DD2401 VME Demodulator Card Connections All DD2401 VME Demodulator Card connections are made to labeled connectors, and to any optional interfaces installed in slots located on the rear of the unintentional interfacing to the DD2401 VME Demodulator Card must be the appropriate mating connector. Refer to Figure 5-1 for connector locations. Shielded cables with the shield terminated to conductive backshells are required in order to meet EMC Directives. Cables with insulation flammability ratings of 94 VO or better are required in order to meet Low Voltage Directives. P2 P1 Figure 5-1. DD2401 VME Demodulator Card Connectors MN-VME2401 – Rev. B 5-1 Rear Panel Interfaces 5.1 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Power Table 5-1. Power (P1) – DIN 96 Male Pin No. Signal Name Description Direction A32,B32, C32 +5V +5V In A31 -12V -12V In C31 +12V +12V In A9, C9, A11, A15, A17, A19, B20, B23 GND Ground ----- 5.1.1 Diagnostic LED’s Table 5-2. Diagnostic LED’s 5-2 Pin No. Description D10 Receiver Fault D11 Receiver on – Carrier Detect D7 Sequential Xilinx Configuration D8 Reed Solomon Xilinx Configuration D9 RX Buffer Xilinx Configuration D3 Viterbi D4 Sequential Lock D5 Demod Lock D6 Reed Solomon Lock MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual 5.2 Rear Panel Interfaces Terrestrial Data & Terminal Control Interface (J1) The J1 Interface supports RS-422 synchrounous Terrestrial Data and RS-232 Remote Terminal Communications. It is a Female 25-Pin D-Sub Connector. Refer to Table 5-1 for connector pinouts and Section 4.2 terminal setup and menu descriptions. Radyne supplies an interfacing Y cables that standardize the terrestrial interface to RS-530 or RS-449 connection. The Y cable includes a DB 9 connector for Terminal communications that allows the user to connect to a computer or terminal interface. • • RS530 Y cable is CAR5941 RS449 Y cable is CA/4263 Table 5-1A. Terrestrial Data Interface Port (J1) - 25-Pin ‘D’ Female Pin No. Signal Name Description Direction 1 Shield 3 RXD-A Receive Data Output 6 DSR Data Set Ready (Always True) Output 7 GND 8 CD-A Demod is Phase Locked Output 9 RXC-B Receive Clock Output 10 CD-B Demod is Phase Locked Output 16 RXD-B Receive Data Output 17 RXC-A Receive Clock Output --- --- Table 5-1B. Terminal Interface Port (J1) - 25-Pin ‘D’ Female Pin No. Signal Name Description Direction 18 TX-232 RS-232 (Terminal) Input 20 Unused 21 RX-232 22 Unused --- 23 GND --- 25 Unused --- MN-VME2401 – Rev. B --RS-232 (Terminal) Output 5-3 Rear Panel Interfaces 5.3 DD2401 VME L-Band Demodulator Card Installation & Operational Manual EXT REF The External Reference Input (J2) is supplied to allow the customer to phase-lock the demodulator’s internal oscillator to an external reference. All internally generated frequencies within the modem will attain the stability of the applied external reference. This female BNC Connector accepts a 1.5 – 5 Vp-p @ 50Ω. The frequency range of the external reference is 1 – 10 MHz in 8 kHz steps. 5.4 SERIAL CONTROL & AGC Monitor (J3) The Serial Control Interface Port (J3) is used for remote monitor and control utilizing Radyne's RLLP Protocol. It offers a direct single connection to the individual demodulator. It is a Female 25-Pin D-Sub Connector supporting RS-232 or RS-485. Refer to Table 5-2A for Remote interface pinouts and Table 5-2B for AGC Monitor pinouts. For multi-drop communications, it is recommended that the J5 be used. The J5 connector multidrops all Remote ports connections allowing the user to connect to a single port. Refer to section 5.6 for additional information. Table 5-4. Serial Control Interface Port (J3) - 25-Pin ‘D’ Female P2 No. Pin No. RS-232 Signal Name RS-485 Signal Name Direction A6 9 TXD TXD-B Output A7 10 TXD-A Output A8 16 RXD-B Input A9 3 RXD-A Input A17 7 GND --- RXD GND Table 5-2B. AGC Monitor (J3) - 25-Pin ‘D’ Female Pin # Signal Description Direction 5 AGC AGC Out Output 7 GND Ground --- 5.5 RX IN 5.5.1 L-Band The Receive Input (J4) is the 950 – 1750 MHz Demodulator IF Input. It is a SMA (1) Connector. 5.6 Remote Port The Remote Port (J5) is an RS-485 used for remote monitor and control of all demodulators. It is a female 9-pin D-Sub connector. Refer to Table 5-5 for connector pinouts. 5-4 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Rear Panel Interfaces Table 5-5. RS-485 Remote Port – 9-Pin Female D-Sub Connector (J5) Pin # Signal Description Direction 1 TX-485B Transmit Data RS-485 (+) Output 5 GND Ground --- 6 TX-485A Transmit Data RS-485 (-) Output 8 RX-485B Receive Data RS-485 (+) Input 9 RX-485A Receive Data RS-485 (-) Input The user must set demodulator addresses prior to connecting to remote port. Refer to Section 5.7, “Remote Addresses”. 5.7 Remote Addresses The demodulator supports up to 16 different remote addresses. Refer to Tables 5-6 and 5-7 for S1 DIP Switch settings. The S1 DIP switch is located on the main board. Table 5-6. S1 DIP Switch Position 1 Position 2 Position 3 Position 4 Address in Decimal off off off off 32 (default) on off off off 33 off on off off 34 on on off off 35 off off on off 36 on off on off 37 off on on off 38 on on on off 39 off off off on 40 MN-VME2401 – Rev. B 5-5 Rear Panel Interfaces DD2401 VME L-Band Demodulator Card Installation & Operational Manual on off off on 41 off on off on 42 on on off on 43 off off on on 44 on off on on 45 off on on on 46 on on on on 47 Table 5-7. S1 DIP Switches Position 5 Control Type off RS-485 (default) on RS-232 Figure 5-3. S1 DIP Swithes S1 Dip Switch Addressable Settings 5-6 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B Rear Panel Interfaces 5-7 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Maintenance & Troubleshooting Maintenance and Troubleshooting 6 6.0 Periodic Maintenance The DD2401 VME L-Band Demodulator Card requires no periodic field maintenance procedures. Should a unit be suspected of a defect in field operations after all interface signals are verified, the correct procedure is to replace the unit with another known working DD2401 VME Demodulator card. If this does not cure the problem, wiring or power should be suspect. There is no external fuse on the DD2401 VME Demodulator Card. The fuse should be located at the external power supply. MN-VME2401 – Rev. B 6-1 Maintenance & Troubleshooting DD2401 VME L-Band Demodulator Card Installation & Operational Manual 6-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Technical Specifications Technical Specifications 7 7.0 Introduction This section defines the technical performance parameters and specifications for the DD2401 VME L-Band Demodulator Card . 7.1 Receive Data Rates (Optional) Data Rate Setting: BPSK: BPSK: BPSK: QPSK: QPSK: QPSK: OQPSK: OQPSK: OQPSK: 8PSK: 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 2/3 Rate 2.4 to 1200 Kbps 2.4 to 1800 Kbps 2.4 to 2100 Kbps 9.6 to 2500 Kbps 14.4 to 3750 Kbps 16.8 to 4375 Kbps 9.6 Kbps to 2500 Kbps 14.4 Kbps to 3750 Kbps 16.8 Kbps to 4375 Kbps 64 Kbps to 5000 Kbps Selectable in 1 bps steps 7.2 Demodulator Specifications Frequency Range: Input Carrier Level: Acquisition/Tracking: Reacquisition range: IF Input Impedance: Return Loss: FEC: Descrambler: Data Buffering: Terrestrial Interfaces: 7.3 Options Concatenated Codec: Turbo Codec: 7.4 950 – 1750 MHz, in 1 Hz steps -65 to -40 dBm (Symbol Rate < 64kHz) -50 to -30 dBm (Symbol Rate > 640kHz) ±1 kHz to ± 42 kHz, 1 kHz steps ±1 kHz to ± 42 kHz, 1 kHz steps 50 Ohm SMA 14 dB (minimum) Viterbi - 1/2, 3/4, and 7/8 Rate Viterbi, K = 7 8PSK - 2/3 Trellis Legacy Turbo - 0.495, 0.793 Rate Standard Turbo – 21/44 (BPSK Only), 1/2, 3/4, 7/8 Rate Intelsat V.35, IBS(VSAT), Turbo(Optional) 8 bits to 262,144 bits, in 8-bit steps RS-422 (RS-449 or RS-530 via cable adapters) A Reed-Solomon codec Intelsat. Turbo Codec per IESS 315 Environmental Prime Power: Operating Temperature: Storage Temperature: MN-VME2401 – Rev. B +5VDC, +12VDC, -12VDC 0 to 50° C, 95% Humidity, Noncondensing -20 to 70° C, 99% Humidity, Noncondensing 7-1 Technical Specifications 7.5 Size: Weight: 7-2 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Physical 9.2” W x 8.6” D (23.36cm x 21.84 cm) 1 pound (0.45 Kg) MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual 7.6 Technical Specifications VME2401 BER Charts 7.6.1 BER Performance (Viterbi) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Viterbi Decoder Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 1/2 Rate 1E-7 Specification 3/4 Rate 1E-8 Specification 7/8 Rate 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-1 - MD2401 B/O/QPSK BER Performance (Viterbi) Note: Eb/No values include the effect of using differential decoding and v.35 descrambling. MN-VME2401 – Rev. B 7-3 Technical Specifications DD2401 VME L-Band Demodulator Card Installation & Operational Manual 7.6.2 BER Performance (Viterbi - w/Reed-Solomon) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Typical Performance Viterbi Decoder Reed Solomon 1E-3 BER 1E-4 1E-5 Specification 1/2 Rate 1E-6 Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-2 - MD2401 B/O/QPSK BER Performance (Viterbi - w/RS) Note: Eb/No values include the effect of using differential decoding. 7-4 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Technical Specifications 7.6.3 BER Performance (Turbo) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification Turbo 0.495 1E-7 Specification Turbo 0.793 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-3 - MD2401 B/O/QPSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-VME2401 – Rev. B 7-5 Technical Specifications DD2401 VME L-Band Demodulator Card Installation & Operational Manual 7.6.4 BER Performance (8PSK Trellis) 1E-1 8PSK Uncoded Theory Trellis Decoder 1E-2 Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 2/3 Rate 1E-7 Specification 2/3 Rate w/RS 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-4 - MD2401 8PSK BER Performance (Trellis) Note: Eb/No values include the effect of using differential decoding and v.35 descrambling. 7-6 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Technical Specifications 7.6.5 BER Performance (8PSK Turbo) 1E-1 8PSK Uncoded Theory Turbo Decoder 1E-2 Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 1E-7 1E-8 Specification Turbo 0.793 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-5 - MD2401 8PSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-VME2401 – Rev. B 7-7 Technical Specifications DD2401 VME L-Band Demodulator Card Installation & Operational Manual 7.6.6 BER Performance ((O)QPSK Turbo) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 1E-4 BER Specification 1/2 Rate Specification 7/8 Rate 1E-5 1E-6 1E-7 Typical Performance 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-6 - MD2401 (O)QPSK BER Performance (Turbo) 7-8 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Technical Specifications 7.6.7 BER Performance (8PSK Turbo) 1E-1 8PSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 Specification 7/8 Rate 1E-4 BER Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 7-7 - MD2401 8PSK BER Performance (Turbo) MN-VME2401 – Rev. B 7-9 Technical Specifications BER 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 1E-9 1E-10 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Table 7-1 - B/O/QPSK BER Performance (Viterbi) Typical Specification 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 4.2 dB 5.3 dB 6.2 dB 3.9 dB 4.9 dB 4.8 dB 6.1 dB 7.1 dB 4.5 dB 5.6 dB 5.5 dB 6.8 dB 7.9 dB 5.1 dB 6.3 dB 6.1 dB 7.6 dB 8.6 dB 5.7 dB 7 dB 6.7 dB 8.3 dB 9.3 dB 6.2 dB 7.7 dB 7.4 dB 8.9 dB 10.2 dB 6.8 dB 8.4 dB 8.2 dB 9.7 dB 11 dB 7.4 dB 9.1 dB 9 dB 10.3 dB 11.7 dB 8.1 dB 9.8 dB 7/8 Rate 5.8 dB 6.5 dB 7.2 dB 7.9 dB 8.6 dB 9.4 dB 10.1 dB 10.5 dB Table 7-2 - B/O/QPSK BER Performance (Viterbi - w/RS) BER Specification Typical 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 1E-3 3.3 dB 5.1 dB 3 dB 4.3 dB 5.3 dB 1E-4 3.5 dB 5.3 dB 3.2 dB 4.5 dB 5.7 dB 1E-5 3.8 dB 5.4 dB 6.5 dB 3.4 dB 4.7 dB 6 dB 1E-6 4.1 dB 5.6 dB 6.7 dB 3.6 dB 4.9 dB 6.4 dB 1E-7 4.2 dB 5.8 dB 6.9 dB 3.8 dB 5.1 dB 6.7 dB 1E-8 4.4 dB 6 dB 7.2 dB 4 dB 5.3 dB 7.1 dB 1E-9 4.7 dB 6.1 dB 7.5 dB 4.2 dB 5.4 dB 7.4 dB 1E-10 5 dB 6.3 dB 7.8 dB 4.4 dB 5.6 dB 7.7 dB Table 7-3 - B/O/QPSK BER Performance (Turbo) Specification Typical Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0.793 1E-3 2.5 dB 3.3 dB 2.2 dB 3 dB 1E-4 2.7 dB 3.7 dB 2.3 dB 3.2 dB 1E-5 3 dB 4.1 dB 2.5 dB 3.4 dB 1E-6 3.2 dB 4.4 dB 2.6 dB 3.6 dB 1E-7 3.5 dB 4.8 dB 2.7 dB 3.8 dB 1E-8 3.7 dB 5.2 dB 2.9 dB 4 dB 1E-9 4 dB 5.6 dB 3 dB 4.2 dB 1E-10 4.2 dB 5.9 dB 3.2 dB 4.4 dB BER 7-10 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual BER 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 1E-9 1E-10 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 1E-9 1E-10 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 Table 7-4 - 8PSK BER Performance (Trellis) Specification Typical 2/3 Rate 2/3 Rate w/RS 2/3 Rate 2/3 Rate w/RS 6.3 dB 5.8 dB 4.8 dB 4.9 dB 7.3 dB 6.1 dB 5.6 dB 5.1 dB 8.2 dB 6.3 dB 6.4 dB 5.4 dB 9 dB 6.5 dB 7.2 dB 5.6 dB 9.8 dB 6.7 dB 8.1 dB 5.8 dB 10.4 dB 6.9 dB 8.9 dB 6.1 dB 11.1 dB 7.1 dB 9.7 dB 6.3 dB 11.9 dB 7.3 dB 10.5 dB 6.6 dB Table 7-5 - 8PSK BER Performance (Turbo) Specification Typical Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0.793 7 dB 4.2 dB 5.4 dB 7.3 dB 4.3 dB 5.6 dB 7.7 dB 4.5 dB 5.9 dB 8 dB 4.6 dB 6.2 dB 8.4 dB 4.7 dB 6.4 dB 8.7 dB 4.9 dB 6.7 dB 9.1 dB 5 dB 7 dB 9.5 dB 5.2 dB 7.3 dB BER BER Technical Specifications Table 7-6 - (O)QPSK BER Performance (Turbo) Specification Typical 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 3.2 dB 4 dB 2.8 dB 3.4 dB 4.1 dB 3 dB 2.7 dB 3.6 dB 4.2 dB 2.4 dB 3.2 dB 2.9 dB 3.8 dB 4.3 dB 2.6 dB 3.4 dB 3.1 dB 4.1 dB 4.4 dB 2.8 dB 3.7 dB 3.3 dB 4.4 dB 4.5 dB 3 dB 4 dB 7/8 Rate 3.7 dB 3.8 dB 3.9 dB 4 dB 4.1 dB 4.2 dB Table 7-7 - 8PSK BER Performance (Turbo) BER Specification Typical 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate 1E-3 5.6 dB 6.7 dB 5.4 dB 6.3 dB 1E-4 5.8 dB 6.8 dB 5.6 dB 6.4 dB 1E-5 6 dB 6.9 dB 5.8 dB 6.5 dB 1E-6 6.2 dB 7 dB 6 dB 6.6 dB 1E-7 6.4 dB 7.1 dB 6.2 dB 6.7 dB 1E-8 6.8 dB 7.2 dB 6.6 dB 6.8 dB MN-VME2401 – Rev. B 7-11 Technical Specifications DD2401 VME L-Band Demodulator Card Installation & Operational Manual 7.7 AGC Curve Figure 7-8. AGC Curve 7-12 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual MN-VME2401 – Rev. B Technical Specifications 7-13 DD2401 VME L-Band Demodulator Card Installation & Operational Manual Glossary Glossary G A A Ampere AC Alternating Current ADC Analog to Digital Converter AGC Automatic Gain Control AIS Alarm Indication System. A signal comprised of all binary 1s. AMSL Above Mean Sea Level ANSI American National Standards Institute ASCII American Standard Code for Information Interchange ASIC Application Specific Integrated Circuit ATE Automatic Test Equipment B BER Bit Error Rate BERT Bit Error Rate Test Bit/BIT Binary Digit or Built-In Test BITE Built-In Test Equipment bps Bits Per Second BPSK Binary Phase Shift Keying BUC Block Upconverter Byte 8 Binary Digits MN-VME2401 – Rev. B G-1 Glossary DD2401 VME L-Band Demodulator Card Installation & Operational Manual C C Celsius CATS Computer Aided Test Software CA/xxxx Cable Assembly CD-ROM Compact Disk – Read Only Memory CLK Clock cm Centimeter COM Common CPU Central Processing Unit CRC Cyclic Redundancy Check. A system of error checking performed at the transmitting and receiving stations. CW Continuous Wave C/N Carrier to Noise Ratio D DAC Digital to Analog Converter dB Decibels dBc Decibels Referred to Carrier dBm Decibels Referred to 1.0 milliwatt DC Direct Current Demod Demodulator or Demodulated DPLL Digital Phase Locked Loop DVB Digital Video Broadcast D&I Drop and Insert E Eb/N0 Ratio of Energy per bit to Noise Power Density in a 1 Hz Bandwidth. EEPROM Electrically Erasable Programmable Read Only Memory EIA Electronic Industries Association EMI Electromagnetic Interference ESC Engineering Service Circuits ES-ES Earth Station to Earth Station Communication ET Earth Terminal G-2 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Glossary F F Fahrenheit FAS Frame Acquisition Sync. A repeating series bits, which allow acquisition of a frame. FCC Federal Communications Commission FEC Forward Error Correction FIFO First In, First Out FPGA Field Programmable Gate Arrays FW Firmware G g Force of Gravity GHz Gigahertz GND Ground H HSSI High-Speed Serial Interface HW Hardware Hz Hertz (Unit of Frequency) I IBS Intelsat Business Services IDR Intermediate Data Rate I/O Input/Output IEEE International Electrical and Electronic Engineers IESS INTELSAT Earth Station Standards IF Intermediate Frequency INTELSAT International Telecommunication Satellite Organization ISO International Standards Organization I&Q Analog In-Phase (I) and Quadrature Signals (Q) J J Joule MN-VME2401 – Rev. B G-3 Glossary DD2401 VME L-Band Demodulator Card Installation & Operational Manual K Kbps Kilobits per Second Kbps Kilobytes per Second kg Kilogram kHz Kilohertz Ksps Kilosymbols per Second L LCD Liquid Crystal Display LED Light Emitting Diode LO Local Oscillator M mA Milliampere Mbps Megabits per Second MFAS Multi-Frame Acquisition Sync. See FAS. MHz Megahertz MIB Management Information Base Mod Modulator or Modulated ms or msec Millisecond M&C Monitor and Control N NC Normally Closed NO Normally Open ns Nanoseconds NVRAM Non-Volatile Random Access Memory N/C No Connection or Not Connected O OQPSK Offset Quadrature Phase Shift Keying P PC Personal Computer PD Buffer Plesiochronous/ Doppler Buffer PLL Phase Locked Loop ppb Parts per Billion ppm Parts per Million P/N Part Number G-4 MN-VME2401 – Rev. B DD2401 VME L-Band Demodulator Card Installation & Operational Manual Glossary Q QAM Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying R RAM Random Access Memory RF Radio Frequency ROM Read Only Memory rms Root Mean Square RU Rack Unit. 1 RU = 1.75”/4.45 cm Rx Receive (Receiver) RxD Receive Data R-S Reed-Solomon Coding. Reed-Solomon codes are block-based error correcting codes with a wide range of applications in digital communications and storage. S SCC Satellite Control Channel. A Comtech EF Data satellite format. SEQ Sequential SYNC Synchronize T TBD To Be Designed or To Be Determined TM Technical Manual TPC Turbo Product Codes TRE Trellis TT Terminal Timing Tx Transmit (Transmitter) TxD Transmit Data U UART Universal Asynchronous Receiver/Transmitter UUT Unit Under Test V V Volts VAC Volts, Alternating Current VCO Voltage Controlled Oscillator VDC Volts, Direct Current VIT Viterbi Decoding MN-VME2401 – Rev. B G-5 Glossary DD2401 VME L-Band Demodulator Card Installation & Operational Manual WXYZ W Watt Misc. µs Microsecond 8PSK 8 Phase Shift Keying G-6 MN-VME2401 – Rev. B