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Comtech EF Data SDM-300A Operating instructions

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Part Number MN/SDM300A.IOM Revision 4
SDM-300A
Satellite Modem
Installation and O
p
eration Manual
Copyright © Comtech EFData, 2000. All rights reserved. Printed in the USA.
Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, (480) 333-2200, FAX: (480) 333-2161.
SDM-300A
Satellite Modem
Installation and Operation Manual
Part Number MN/SDM300A.IOM
Revision 0
June 15, 2000
Comtech EFData is an ISO 9001
Registered Company.
Customer Support
Contact the Comtech EFData Customer Support Department for:
• Product support or training
• Information on upgrading or returning a product
• Reporting comments or suggestions concerning manuals
A Customer Support representative may be reached at:
Comtech EFData
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
(480) 333-2200 (Main Comtech EFData Number)
(480) 333-4357 (Customer Support Desk)
(480) 333-2161 FAX
or, E-Mail can be sent to the Customer Support Department at:
service@comtechefdata.com
Contact us via the web at www.comtechefdata.com.
To return a Comtech EFData product (in-warranty and out-of-warranty) for repair or
replacement:
1. Request a Return Material Authorization (RMA) number from the Comtech
EFData Customer Support Department.
Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.
2. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
3. Ship the product back to Comtech EFData. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. xvii.
Rev. 4 ii
Table of Contents
Customer Support........................................................................................................................................................i
Overview of Revisions..............................................................................................................................................xiv
About this Manual ...................................................................................................................................................xiv
Related Documents................................................................................................................................................ xiv
Conventions and References................................................................................................................................... xv
Cautions and Warnings ...................................................................................................................................... xv
Metric Conversion.............................................................................................................................................. xv
Recommended Standard Designations............................................................................................................... xv
Trademarks......................................................................................................................................................... xv
Reporting Comments or Suggestions Concerning this Manual.............................................................................. xv
European EMC Directive........................................................................................................................................xvi
Warranty Policy......................................................................................................................................................xvii
Limitations of Warranty .......................................................................................................................................xvii
Exclusive Remedies..............................................................................................................................................xvii
Disclaimer................................................................................................................................................................xvii
CHAPTER 1. INTRODUCTION...................................................................................1–1
1.1 Overview.....................................................................................................................................................1–2
1.1.1 Additional Features............................................................................................................................. 1–3
1.1.2 Modes of Operation.............................................................................................................................1–3
1.1.3 Modem Construction........................................................................................................................... 1–5
1.2 Options........................................................................................................................................................1–7
1.2.1 FAST Options..................................................................................................................................... 1–8
1.2.2 Factory Options................................................................................................................................... 1–9
1.2.2.1 Factory-Installed Options........................................................................................................... 1–9
1.2.2.2 Factory- or User-Installed Options............................................................................................. 1–9
1.2.3 Breakout Panel.................................................................................................................................. 1–10
1.2.3.1 UB-300 Universal Breakout Panel........................................................................................... 1–10
1.2.3.2 UB-530 Breakout Panel............................................................................................................1–10
SDM-300A Preface
Rev. 4 iii
1.2.3.3 UB-54 Breakout Panel..............................................................................................................1–10
1.3 Modem Assemblies...................................................................................................................................1–11
1.4 Typical Spectral Occupancy ................................................................................................................... 1–13
1.5 Dimensional Envelope .............................................................................................................................1–14
CHAPTER 2. INSTALLATION....................................................................................2–1
2.1 Unpacking...................................................................................................................................................2–1
2.2 Installation..................................................................................................................................................2–2
2.3 External Modem Connections...................................................................................................................2–4
2.3.1 Remote Connector and Pinouts (J6)....................................................................................................2–6
2.3.2 Fault Connector and Pinouts (J7)........................................................................................................2–7
2.3.3 Data I/O Interface Connector (J8)....................................................................................................... 2–8
2.3.3.1 Data I/O Interface Connector (J8) Removal/Installation..........................................................2–14
2.3.3.1.1 Data I/O Connector (J8) Removal.........................................................................................2–15
2.3.3.1.2 Data I/O Connector (J8) Installation..................................................................................... 2–16
2.3.4 Auxiliary 1 Connector and Pinouts (J9)............................................................................................ 2–18
2.3.5 Alarms Connector and Pinouts (J10)................................................................................................. 2–19
2.3.6 RF Output Connector (CP1).............................................................................................................. 2–19
2.3.7 RF Input Connector (CP2) ................................................................................................................ 2–19
2.3.8 External Reference (CP3).................................................................................................................. 2–20
2.3.9 Power Entry.......................................................................................................................................2–20
2.3.9.1 AC Power Connector................................................................................................................ 2–20
2.3.9.2 48VDC Option .........................................................................................................................2–20
2.3.10 Ground Connector (GND) ............................................................................................................ 2–20
CHAPTER 3. OPERATION.........................................................................................3–1
3.1 Front Panel.................................................................................................................................................3–1
3.1.1 LED Indicators.................................................................................................................................... 3–2
3.1.2 Front Panel Keypad............................................................................................................................. 3–3
3.2 Menu System.............................................................................................................................................. 3–5
3.3 Front Panel Menu...................................................................................................................................... 3–7
3.3.1 Configuration Modulator.....................................................................................................................3–9
3.3.2 Configuration Demodulator ..............................................................................................................3–13
3.3.3 Configuration Interface..................................................................................................................... 3–18
3.3.4 Configuration Local AUPC............................................................................................................... 3–27
3.3.5 Configuration MUX.......................................................................................................................... 3–29
3.3.6 Configuration Flex Mux....................................................................................................................3–32
3.3.7 Configuration Save............................................................................................................................ 3–35
3.3.8 Configuration Recall......................................................................................................................... 3–35
3.3.9 Monitor..............................................................................................................................................3–37
3.3.10 Faults/Alarms................................................................................................................................3–39
3.3.10.1 Modulator Faults ...................................................................................................................... 3–40
3.3.10.2 Demodulator Faults.................................................................................................................. 3–40
3.3.10.3 Transmit Interface Faults.......................................................................................................... 3–40
Preface SDM-300A
iv Rev. 4
3.3.10.4 Receive Interface Faults........................................................................................................... 3–41
3.3.10.5 Common Equipment Faults...................................................................................................... 3–42
3.3.10.6 Backward Alarms..................................................................................................................... 3–42
3.3.11 Stored Faults/Alarms .................................................................................................................... 3–45
3.3.11.1 Unavailable Seconds Fault....................................................................................................... 3–45
3.3.12 Remote AUPC .............................................................................................................................. 3–47
3.3.12.1 Remote AUPC Configuration................................................................................................... 3–47
3.3.12.2 Remote AUPC Monitor............................................................................................................ 3–47
3.3.13 Utility............................................................................................................................................ 3–49
3.3.13.1 Utility Modulator...................................................................................................................... 3–51
3.3.13.2 Utility Demodulator ................................................................................................................. 3–54
3.3.13.3 Utility Interface ........................................................................................................................ 3–58
3.3.13.4 Utility System........................................................................................................................... 3–62
3.3.13.5 Utility Modem Type Functions ................................................................................................ 3–68
3.3.13.6 Utility Factory Setup ................................................................................................................ 3–71
3.3.14 SDM-300A Custom Modem Defaults .......................................................................................... 3–74
3.4 Software Configuration...........................................................................................................................3–76
3.4.1 Modem Types.................................................................................................................................... 3–76
3.4.2 Operation........................................................................................................................................... 3–77
3.4.2.1 IDR Operation.......................................................................................................................... 3–77
3.4.2.2 IBS Operation........................................................................................................................... 3–78
3.4.2.3 D&I Operation.......................................................................................................................... 3–79
3.4.2.4 ASYNC/AUPC Operation........................................................................................................3–80
3.4.2.5 EFD Closed Network Operation...............................................................................................3–81
3.4.2.6 Custom Operation.....................................................................................................................3–82
3.4.2.7 SDM-100 Emulation Operation................................................................................................3–83
3.4.2.8 SDM-6000 Emulation Operation..............................................................................................3–84
3.4.2.9 Revision Emulation Operation ................................................................................................. 3–85
3.5 Clocking Options...................................................................................................................................... 3–86
3.5.1 EIA-232, EIA-422, or V.35 Master/Master.......................................................................................3–86
3.5.2 EIA-232, EIA-422, or V.35 Master/Slave......................................................................................... 3–86
3.5.3 IDR/IBS G.703 Master/Master .........................................................................................................3–87
3.5.4 IDR/IBS G.703 Master/Slave............................................................................................................3–87
3.5.5 D&I G.703 Master/Master ................................................................................................................ 3–93
3.6 Buffering................................................................................................................................................... 3–93
3.6.1....................................................................................................................................................................3–96
3.6.1 Buffer Size ........................................................................................................................................ 3–96
3.6.1.1 Doppler..................................................................................................................................... 3–96
3.6.1.2 Plesiochronous..........................................................................................................................3–97
3.6.1.3 Frame/Multiframe Length ........................................................................................................3–98
3.6.1.4 Multiples of the Frame Length................................................................................................. 3–98
3.6.1.5 Total Buffer Length..................................................................................................................3–98
3.6.2 Converting Between Bits and Seconds..............................................................................................3–98
3.6.2.1 Bits to Seconds.........................................................................................................................3–98
3.6.2.2 Seconds to Bits.........................................................................................................................3–98
CHAPTER 4. THEORY OF OPERATION...................................................................4–1
4.1 Monitor and Control (M&C).................................................................................................................... 4–1
4.1.1 Theory of Operation............................................................................................................................ 4–2
4.1.2 Remote Baud Rate............................................................................................................................... 4–4
SDM-300A Preface
Rev. 4 v
4.1.3 Remote Address.................................................................................................................................. 4–4
4.2 Modulator...................................................................................................................................................4–5
4.2.1 Modulator Specifications.................................................................................................................... 4–6
4.2.2 Theory of Operation............................................................................................................................ 4–6
4.2.3 Theory of Modulation Types............................................................................................................... 4–8
4.3 Demodulator...............................................................................................................................................4–9
4.3.1 Demodulator Specifications..............................................................................................................4–10
4.3.2 Theory of Operation.......................................................................................................................... 4–10
4.4 Decoder..................................................................................................................................................... 4–12
4.5 Interface....................................................................................................................................................4–13
4.5.1 Interface Specifications..................................................................................................................... 4–15
4.5.2 Plesiochronous/Doppler/Buffer......................................................................................................... 4–15
4.5.3 Closed Network................................................................................................................................. 4–16
4.5.4 Open Network................................................................................................................................... 4–16
4.6 Backward Alarm Theory and Connections...........................................................................................4–17
CHAPTER 5. MAINTENANCE....................................................................................5–1
5.1 System Checkout........................................................................................................................................5–1
5.1.1 Interface Checkout .............................................................................................................................. 5–2
5.1.2 Modulator Checkout............................................................................................................................ 5–3
5.1.3 Demodulator Checkout ....................................................................................................................... 5–6
5.2 Fault Isolation ............................................................................................................................................5–8
5.2.1 System Faults/Alarms ......................................................................................................................... 5–8
5.2.2 Faults/Alarms Display....................................................................................................................... 5–12
5.2.3 Faults/Alarms Analysis..................................................................................................................... 5–12
5.2.3.1 Modulator Faults ...................................................................................................................... 5–13
5.2.3.2 Demodulator Faults.................................................................................................................. 5–14
5.2.3.3 Transmit Interface Faults.......................................................................................................... 5–15
5.2.3.4 Receive Interface Faults...........................................................................................................5–16
5.2.3.5 Common Equipment Faults......................................................................................................5–18
5.2.3.6 Backward Alarms Faults .......................................................................................................... 5–19
APPENDIX A. OPTIONS ........................................................................................... A–1
A.1 FAST Accessible Options..................................................................................................................... A–2
A.1.1 FAST System Theory......................................................................................................................... A–3
A.1.2 Implementation .................................................................................................................................. A–3
A.1.2.1 Activation Procedure................................................................................................................. A–3
A.1.3 D&I .................................................................................................................................................... A–7
A.1.3.1 D&I Specifications.................................................................................................................... A–8
A.1.3.2 Theory of Operation................................................................................................................ A–12
A.1.3.2.1 Data Interference................................................................................................................. A–12
A.1.3.2.2 Transmitted MUX............................................................................................................... A–12
A.1.3.2.3 Receive DEMUX................................................................................................................ A–13
A.1.3.2.4 Plesiochronous Buffer......................................................................................................... A–13
A.1.3.2.5 Engineering Service Channel (ESC)................................................................................... A–14
Preface SDM-300A
vi Rev. 4
A.1.3.2.6 Backward Alarm................................................................................................................. A–14
A.1.3.3 D&I Framing Formats............................................................................................................. A–15
A.1.3.4 D&I Modem Defaults.............................................................................................................. A–18
A.1.4 Asynchronous Interface/AUPC........................................................................................................ A–19
A.1.4.1 AUPC...................................................................................................................................... A–21
A.1.4.1.1 Self-Monitoring Local Modem AUPC Control................................................................... A–22
A.1.4.2 Remote AUPC......................................................................................................................... A–23
A.1.4.3 Theory of Operation................................................................................................................ A–23
A.1.4.3.1 Terrestrial Data Interfaces................................................................................................... A–23
A.1.4.3.2 ASYNC Data Interfaces...................................................................................................... A–23
A.1.4.3.3 MUX Operation .................................................................................................................. A–24
A.1.4.3.4 DEMUX Operation............................................................................................................. A–24
A.1.4.3.5 Buffer Operation................................................................................................................. A–24
A.1.4.3.6 Loop Timing Operation....................................................................................................... A–25
A.1.4.3.7 Baseband Loopback Operation........................................................................................... A–25
A.1.4.3.8 Non-ASYNC Operation...................................................................................................... A–26
A.1.4.3.9 ASYNC Channel EIA-485 2- and 4-Wire Operation.......................................................... A–26
A.1.4.3.10 Valid ASYNC Baud Rates................................................................................................ A–27
A.1.4.4 Front Panel Operation.............................................................................................................. A–27
A.1.4.5 ASYNC Remote Operation..................................................................................................... A–28
A.1.4.5.1 Configuration #1 (Local EIA-232 to Remote EIA-232) ..................................................... A–30
A.1.4.5.2 Configuration #2 (Local EIA-232 to Remote EIA-485 [4-Wire]) ...................................... A–31
A.1.4.5.3 Configuration #3 (Local EIA-232 to Remote EIA-485 [2-Wire]) ...................................... A–32
A.1.4.5.4 Configuration #4 (Local EIA-485 [4-Wire] to Remote EIA-232) ...................................... A–33
A.1.4.5.5 Configuration #5 (Local EIA-485 [4-Wire] to Remote EIA-485 [4-Wire])....................... A–34
A.1.4.5.6 Configuration #6 (Local EIA-485 [4-Wire] to Remote EIA-485 [2-Wire])........................ A–35
A.1.4.5.7 Configuration #7 (Local EIA-485 [2-Wire] to Remote EIA-232) ...................................... A–36
A.1.4.5.8 Configuration #8 (Local EIA-485 [2-Wire] to Remote EIA-485 [4-Wire])........................ A–38
A.1.4.6 ASYNC/AUPC Modem Defaults............................................................................................ A–40
A.1.4.7 Sequential Decoder.................................................................................................................. A–41
A.1.4.7.1 Theory of Operation............................................................................................................ A–42
A.1.4.8 Viterbi Decoder....................................................................................................................... A–43
A.1.4.8.1 Specifications...................................................................................................................... A–44
A.1.4.8.2 Theory of Operation............................................................................................................ A–44
A.1.4.9 Reed-Solomon Decoder........................................................................................................... A–45
A.1.5 IDR................................................................................................................................................... A–46
A.1.5.1 IDR Specifications................................................................................................................... A–49
A.1.5.2 IDR Modem Defaults.............................................................................................................. A–50
A.1.5.3 IBS Specification s.................................................................................................................. A–53
A.1.5.4 IBS Modem Defaults............................................................................................................... A–54
A.1.6 Asymmetrical Loop Timing............................................................................................................. A–55
A.1.7 G.703................................................................................................................................................ A–58
A.1.7.1 G.703 Specifications................................................................................................................ A–59
A.1.8 Variable Data Rates.......................................................................................................................... A–59
A.2 Conventional Options......................................................................................................................... A–60
A.2.1 Reed-Solomon Codec....................................................................................................................... A–60
A.2.1.1 Specifications .......................................................................................................................... A–61
A.2.1.2 Theory of Operation................................................................................................................ A–62
A.2.1.3 Reed-Solomon Encoder........................................................................................................... A–62
A.2.1.4 Reed-Solomon Decoder........................................................................................................... A–65
A.2.1.5 Unpacking ............................................................................................................................... A–67
A.2.1.6 Installation............................................................................................................................... A–67
A.3 Software and Hardware Installation/Upgrades............................................................................... A–69
SDM-300A Preface
Rev. 4 vii
A.3.1 Overhead Interface PCB Installation................................................................................................ A–69
A.3.1.1 Installation............................................................................................................................... A–70
A.3.2 Hardware Upgrades.......................................................................................................................... A–72
A.3.2.1 Main PCB................................................................................................................................ A–72
A.3.2.2 Overhead Interface PCB.......................................................................................................... A–73
A.3.3 8-Channel Multiplexer Option......................................................................................................... A–74
A.3.3.1 Installation............................................................................................................................... A–75
A.3.3.2 Specifications Summary.......................................................................................................... A–77
A.3.4 Flex Mux.......................................................................................................................................... A–79
A.3.4.1 Installation............................................................................................................................... A–83
A.3.4.2 Pin Assignment........................................................................................................................ A–85
APPENDIX B. REMOTE CONTROL OPERATION ................................................... B–1
B.1 General...................................................................................................................................................B–1
B.2 Message Structure.................................................................................................................................B–2
B.2.1 Start Character.....................................................................................................................................B–2
B.2.2 Device Address ...................................................................................................................................B–2
B.2.3 Command/Response............................................................................................................................B–4
B.2.4 End Character......................................................................................................................................B–4
B.3 Configuration Commands/Responses..................................................................................................B–5
B.3.1 Modulator Configuration Commands .................................................................................................B–5
B.3.2 Demodulator Configuration Commands.............................................................................................B–7
B.3.3 Interface Configuration Commands....................................................................................................B–9
B.3.4 System Configuration Commands.....................................................................................................B–15
B.3.5 Automatic Uplink Power Control (AUPC) .......................................................................................B–16
B.3.6 MUX PCB Configuration Commands (MUX PCB Installed Only)..................................................B–18
B.3.7 Flex Mux Configuration Commands (Flex Mux PCB Installaed Only)............................................B–19
B.4 Status Commands/Responses .............................................................................................................B–22
B.4.1 Modulator Configuration Status........................................................................................................B–22
B.4.2 Demodulator Configuration Status....................................................................................................B–26
B.4.3 Error Performance.............................................................................................................................B–33
B.5 Stored Faults........................................................................................................................................B–36
B.6 Flex Mux Configuration Commands (Flex Mux PCB Installed Only) ...........................................B–54
APPENDIX C. SPECIFICATIONS.............................................................................. C–1
C.1 Specifications......................................................................................................................................... C–1
C.1.1 General Specifications.........................................................................................................................C–1
C.2 Modulator Specifications..................................................................................................................... C–4
C.2.1 Digital Data Rate.................................................................................................................................C–4
C.2.2 Modulation and Encoding Types ........................................................................................................C–6
C.2.3 Scrambling Types................................................................................................................................C–7
C.2.4 Differential Encoder............................................................................................................................C–7
C.2.5 BPSK Bit Ordering .............................................................................................................................C–7
C.2.6 Interleaver (Reed-Solomon Codec).....................................................................................................C–7
C.2.7 Transmit Frequency (IF) .....................................................................................................................C–8
Preface SDM-300A
viii Rev. 4
C.2.8 Frequency Reference...........................................................................................................................C–8
C.2.9 Transmit Frequency Change Time......................................................................................................C–8
C.2.10 Phase Noise.....................................................................................................................................C–8
C.2.11 Transmit IF Output Switch.............................................................................................................C–9
C.2.12 Transmit IF Power..........................................................................................................................C–9
C.2.13 Modulator Power Offset .................................................................................................................C–9
C.2.14 Modulated IF Output Shape............................................................................................................C–9
C.2.15 Spurious Emissions.........................................................................................................................C–9
C.2.16 Modulator Phase Error..................................................................................................................C–10
C.2.17 Transmit IF Test Modes................................................................................................................C–10
C.2.18 Modulator Spectrum Rotation The operator can select Normal or Inverted spectrum of the of the
Modulator Output...............................................................................................................................................C–10
C.2.19 Encoding.......................................................................................................................................C–10
C.2.19.1 BPSK Encoding........................................................................................................................C–10
C.2.19.2 QPSK Encoding .......................................................................................................................C–10
C.2.19.3 OQPSK Encoding.....................................................................................................................C–11
C.2.19.4 8PSK Encoding ........................................................................................................................C–11
C.3 Demodulator Specifications............................................................................................................... C–12
C.3.1 Digital Data Rate...............................................................................................................................C–12
C.3.2 Demodulation and FEC Decoding Types..........................................................................................C–13
C.3.3 Descrambling Types..........................................................................................................................C–14
C.3.4 Differential Decoder..........................................................................................................................C–14
C.3.5 BPSK Bit Ordering ...........................................................................................................................C–14
C.3.6 Decoding...........................................................................................................................................C–14
C.3.6.1 BPSK Encoding........................................................................................................................C–14
C.3.6.2 QPSK Encoding .......................................................................................................................C–15
C.3.6.3 OQPSK Encoding.....................................................................................................................C–15
C.3.6.4 8PSK Encoding ........................................................................................................................C–15
C.3.7 Demodulator (Reed-Solomon Codec)...............................................................................................C–16
C.3.8 Demodulator Spectrum Rotation.......................................................................................................C–16
C.3.9 Receive Frequency (IF).....................................................................................................................C–16
C.3.10 Receive Input Power (Desired Carrier).........................................................................................C–16
C.3.11 Receive Input Power (Composite)................................................................................................C–16
C.3.12 IF Input Overload .........................................................................................................................C–16
C.3.13 Demodulator IF Input Shape.........................................................................................................C–17
C.3.14 Channel Spacing/Adjacent Carrier Performance ..........................................................................C–17
C.4 BER Performance Specifications...................................................................................................... C–18
C.4.1 Performance with Noise, Viterbi Decoder, and Open Network Mode..............................................C–19
C.4.2 Performance with Noise, Viterbi Decoder, and Closed Network......................................................C–21
C.4.3 Performance with Noise, Viterbi Decoder, and Reed-Solomon (Optional) ......................................C–23
C.4.4 Performance with Noise, 56 kbit/s and Sequential Decoder (Optional)............................................C–25
C.4.5 Performance with Noise, 1544 kbit/s and Sequential Decoder (Optional)........................................C–27
C.4.6 Performance with Noise at 1544 kbit/s, Sequential Decoder, and Reed-Solomon (Optional)..........C–29
C.4.7 8PSK Performance with Noise and With/Without Reed-Solomon...................................................C–31
C.4.8 Performance with Noise, Viterbi Decoder, and OQPSK...................................................................C–33
C.4.9 Performance with Noise, Uncoded (1/1) BPSK, QPSK, and OQPSK..............................................C–35
C.4.10 BER Threshold .............................................................................................................................C–35
C.5 Acquisition Time................................................................................................................................. C–37
C.5.1 Receive IF Carrier Acquisition Range ..............................................................................................C–37
C.5.2 Receive IF Carrier Reacquisition......................................................................................................C–37
C.5.3 AGC Output......................................................................................................................................C–38
SDM-300A Preface
Rev. 4 ix
C.6 Interface Specifications...................................................................................................................... C–38
C.6.1 Interface General...............................................................................................................................C–38
C.6.2 Transmit Clock Source......................................................................................................................C–38
C.6.3 Send Clock Timing Source ...............................................................................................................C–38
C.6.3.1 Transmit Clock Switching Due to Failure of Selected Clock...................................................C–39
C.6.3.2 Transmit Clock Phase Adjustment...........................................................................................C–39
C.6.3.3 Transmit Data Phase Adjustment .............................................................................................C–39
C.6.3.4 Transmit Data Stable Condition...............................................................................................C–39
C.6.3.5 Doppler/Plesiochronous Buffer Clock Source..........................................................................C–39
C.6.3.6 Receive Clock Switching Due to Failure of Selected Clock ....................................................C–39
C.6.3.7 Receive Clock Phase Adjustment.............................................................................................C–39
C.6.3.8 Receive Clock Jitter..................................................................................................................C–40
C.6.3.9 Receive Data Phase Adjustment...............................................................................................C–40
C.6.3.10 Receive Data Stable Condition.................................................................................................C–40
C.6.3.11 Receive Doppler/Plesiochronous Buffer Size...........................................................................C–40
C.6.3.12 Buffer Centering.......................................................................................................................C–40
C.6.3.13 Switch Faults............................................................................................................................C–40
C.7 Terrestrial Interface Types................................................................................................................ C–41
C.7.1 Universal...........................................................................................................................................C–41
C.7.2 Specifications....................................................................................................................................C–42
C.7.2.1 EIA-232 Specification..............................................................................................................C–42
C.7.2.2 V.35 Specification V.10, V.11 Specification, Circuit Supported.............................................C–43
C.7.2.3 EIA-449/EIA-422 Mil-188-114A Specification.......................................................................C–44
C.7.2.4 G.703 (Optional with Overhead Card).....................................................................................C–44
C.8 Asynchronous Overhead Specification (Optional) .......................................................................... C–45
C.8.1 Asynchronous Baud Rates ................................................................................................................C–46
C.8.2 Asynchronous Overhead Data Format ..............................................................................................C–46
C.8.3 Local Automatic Uplink Power Control (AUPC) .............................................................................C–46
C.8.4 AUPC Power Levels.........................................................................................................................C–46
C.8.5 AUPC Target Noise Level ................................................................................................................C–46
C.8.6 AUPC Tracking Rate ........................................................................................................................C–46
C.8.7 AUPC Carrier Loss Action ...............................................................................................................C–47
C.8.8 Remote AUPC...................................................................................................................................C–47
C.9 Intelsat Business System .................................................................................................................... C–48
C.9.1 IBS (Optional with Overhead Card)..................................................................................................C–48
C.9.2 IBS Primary Data Interfaces..............................................................................................................C–48
C.9.3 IBS Clock and Dejitter......................................................................................................................C–48
C.9.4 IBS Framing......................................................................................................................................C–49
C.9.5 IBS Engineering Service Channel.....................................................................................................C–49
C.9.6 IBS Scrambling.................................................................................................................................C–49
C.10 Drop and Insert................................................................................................................................... C–50
C.10.1 D&I (Optional with Overhead Card)............................................................................................C–50
C.10.2 D&I Primary Data Interfaces........................................................................................................C–51
C.10.3 D&I Framing ................................................................................................................................C–51
C.11 Intermediate Data Rate...................................................................................................................... C–52
C.11.1 IDR (Optional with Overhead Card).............................................................................................C–52
C.11.2 IDR Primary Data Interfaces ........................................................................................................C–52
C.11.3 IDR Framing.................................................................................................................................C–53
C.11.4 IDR Engineering Service Channel................................................................................................C–53
Preface SDM-300A
x Rev. 4
C.12 System Specifications ......................................................................................................................... C–54
C.12.1 Loopback Modes ..........................................................................................................................C–54
C.12.2 Test Modes ...................................................................................................................................C–54
C.12.3 Remote Control.............................................................................................................................C–55
C.12.4 Modem Remote Address...............................................................................................................C–55
C.12.5 Monitored Signals.........................................................................................................................C–55
C.12.6 Master Reset .................................................................................................................................C–56
C.12.7 Modem Emulation Modes.............................................................................................................C–56
C.13 Doppler................................................................................................................................................ C–57
GLOSSARY ................................................................................................................g–1
INDEX ..................................................................................................................i–1
Figures
Figure 1-1. SDM-300A............................................................................................................................................1–1
Figure 1-2. Modular Design.....................................................................................................................................1–5
Figure 1-3. Block Diagram ...................................................................................................................................... 1–6
Figure 1-4. Typical Spectral Occupancy................................................................................................................1–12
Figure 1-5. Dimensional Envelope ........................................................................................................................ 1–13
Figure 2-1. Installation of the Mounting Bracket..................................................................................................... 2–3
Figure 2-2. Basic Modem, 25-Pin D Connector....................................................................................................... 2–5
Figure 2-3. (V.35) 34-Pin Winchester Connector.................................................................................................... 2–5
Figure 2-4. EIA-422/449, 37-Pin D Connector........................................................................................................2–5
Figure 2-5. Overhead Option, 50-Pin D Connector................................................................................................... 2–5
Figure 2-6. 8-Channel, 100-Pin MUX Connector.................................................................................................... 2–5
Figure 2-7. Data I/O Connector (J8) Removal/Installation.................................................................................... 2–17
Figure 3-1. Front Panel View...................................................................................................................................3–1
Figure 3-2. Keypad .................................................................................................................................................. 3–3
Figure 3-3. Main Menu............................................................................................................................................ 3–7
Figure 3-4. Configuration Modulator Menu ............................................................................................................ 3–8
Figure 3-5. Configuration Demodulator Menu ...................................................................................................... 3–12
Figure 3-6. Configuration Interface Menu.............................................................................................................3–16
Figure 3-7. Configuration Local AUPC Menu.......................................................................................................3–26
Figure 3-8. Configuration MUX............................................................................................................................ 3–28
Figure 3-9. Configuration Flex Mux...................................................................................................................... 3–30
Figure 3-10. Configuration Save Menu..................................................................................................................3–34
Figure 3-11. Configuration Recall Menu............................................................................................................... 3–34
Figure 3-12. Monitor Menu.................................................................................................................................... 3–36
Figure 3-13. Faults/Alarms Menu..........................................................................................................................3–38
Figure 3-14. Stored Faults/Alarms Menu............................................................................................................... 3–44
Figure 3-15. Remote AUPC Configuration Menu ................................................................................................. 3–46
Figure 3-16. Remote AUPC Monitor Menu...........................................................................................................3–46
Figure 3-17. Utility Modulator Menu .................................................................................................................... 3–50
Figure 3-18. Utility Demodulator Menu................................................................................................................ 3–53
Figure 3-19. Utility Interface Menu.......................................................................................................................3–56
SDM-300A Preface
Rev. 4 xi
Figure 3-20. Utility System Menu .........................................................................................................................3–60
Figure 3-21. Utility Modem Type Menu................................................................................................................ 3–66
Figure 3-22. Utility Factory Setup Menu............................................................................................................... 3–71
Figure 3-23. RF Loopback..................................................................................................................................... 3–72
Figure 3-24. IF Loopback...................................................................................................................................... 3–72
Figure 3-25. Baseband Loopback .......................................................................................................................... 3–73
Figure 3-26. Interface Loopback............................................................................................................................3–73
Figure 3-27. EIA-422, EIA-232, or V.35 Master/Master Clocking Diagram ........................................................ 3–88
Figure 3-28. EIA-422, EIA-232, or V.35 Master/Slave Clocking Diagram...........................................................3–89
Figure 3-29. IDR/IBS G.703 Master/Master Clocking Diagram...........................................................................3–90
Figure 3-30. IDR/IBS G.703 Master/Slave Clocking Diagram..............................................................................3–91
Figure 3-31. D&I G.703 Master/Master Clocking Diagram.................................................................................. 3–92
Figure 3-32. Clock Slip.......................................................................................................................................... 3–94
Figure 3-33. Doppler Shift.....................................................................................................................................3–95
Figure 4-1. M&C Block Diagram............................................................................................................................ 4–2
Figure 4-2. Modulator Block Diagram.....................................................................................................................4–5
Figure 4-3. Demodulator Block Diagram.................................................................................................................4–8
Figure 4-4. Interface Block Diagram..................................................................................................................... 4–13
Figure 5-1. Fault Isolation Test Setup...................................................................................................................... 5–2
Figure 5-2. Typical Output Spectrum (with Noise) ................................................................................................. 5–5
Figure 5-3. Typical Output Spectrum (without Noise) ............................................................................................ 5–5
Figure 5-4. Typical Eye Constellations.................................................................................................................... 5–7
Figure A-1. D&I with Asynchronous Overhead Block Diagram.......................................................................... A–10
Figure A-2. D&I with Asynchronous Overhead Data Flow.................................................................................. A–11
Figure A-3. E1 Framing Formats.......................................................................................................................... A–16
Figure A-4. T1 Framing Formats.......................................................................................................................... A–17
Figure A-5. ASYNC/AUPC Block Diagram ........................................................................................................ A–20
Figure A-6. Remote ASYNC Connection Diagram for Y Cable.......................................................................... A–29
Figure A-7. Remote ASYNC Connection Diagram for Breakout Panel............................................................... A–29
Figure A-8. Sequential Decoder Block Diagram .................................................................................................. A–41
Figure A-9. Viterbi Decoder Block Diagram........................................................................................................ A–43
Figure A-10. IDR Interface Block Diagram.......................................................................................................... A–48
Figure A-11. IBS Interface Block Diagram.......................................................................................................... A–52
Figure A-12. Transmit Section of the Asymmetrical Loop Timing Block Diagram............................................. A–56
Figure A-13. Receive Section of the Asymmetrical Loop Timing Block Diagram.............................................. A–57
Figure A-14. Reed-Solomon PCB (AS/5304-1) ................................................................................................... A–60
Figure A-15. Reed-Solomon Codec Block Diagram............................................................................................. A–61
Figure A-16. Reed-Solomon Encoder Section Block Diagram............................................................................. A–62
Figure A-17. Reed-Solomon Code Page Format................................................................................................... A–64
Figure A-18. Reed-Solomon Decoder Section Block Diagram ............................................................................ A–65
Figure A-19. Reed-Solomon Codec Installation................................................................................................... A–68
Figure A-20. Overhead Interface PCB Installation............................................................................................... A–71
Figure A-21. Main Board Field-Changeable Chips .............................................................................................. A–72
Figure A-22. Overhead Board Field-Changeable Chips....................................................................................... A–73
Figure A-23. 8-Channel Multiplexer PCB (AS/5985) .......................................................................................... A–74
Figure A-24. 8-Channel Multiplexer Installation.................................................................................................. A–76
Figure A-25. Flex Mux (AS/6450)........................................................................................................................ A–80
Figure A-26. Flex Mux Multiplexer Installation................................................................................................... A–84
Figure C-1. Viterbi BER Performance Curves.......................................................................................................C–20
Figure C-2. Viterbi with Reed-Solomon BER Performance Curves......................................................................C–22
Figure C-3. Noise, Viterbi, and Reed-Solomon (Optional) BER Performance Curves .........................................C–24
Figure C-4. Sequential BER Performance Curves (56 kbit/s)................................................................................C–26
Figure C-5. Sequential Decoder BER Performance Curves (1544 kbit/s) .............................................................C–28
Figure C-6. Sequential BER Curves at 1544 kbit/s and Reed-Solomon ................................................................C–30
Figure C-7. 8PSK BER Specification Curves (1544 kbit/s)...................................................................................C–32
Preface SDM-300A
xii Rev. 4
Figure C-8. Viterbi Decoder and OQPSK..............................................................................................................C–34
Figure C-9. Uncoded (1/1) BPSK, QPSK, and OQPSK........................................................................................C–36
Tables
Table 1-1. Options ...................................................................................................................................................1–7
Table 1-2. FAST Options and Required Configurations..........................................................................................1–8
Table 1-3. EFData Part Numbers for Various Modules......................................................................................... 1–11
Table 2-1. Modem Rear Panel Connectors .............................................................................................................. 2–4
Table 2-2. Remote Connector and Pinouts (J6) ....................................................................................................... 2–6
Table 2-3. Fault Connector and Pinouts (J7)............................................................................................................ 2–7
Table 2-4. 25-Pin D Connector Pinouts................................................................................................................... 2–9
Table 2-5. 34-Pin Winchester Connector Pinouts (V.35) ...................................................................................... 2–10
Table 2-6. 37-Pin Connector Pinouts (Optional)....................................................................................................2–11
Table 2-7. 50-Pin Connector Pinouts..................................................................................................................... 2–12
Table 2-8. Connector (J8) Matrix...........................................................................................................................2–14
Table 2-9. AUX 1 Connector and Pinouts (J9)...................................................................................................... 2–18
Table 2-10. Alarms Connector and Pinouts (J10).................................................................................................. 2–19
Table 3-1. LED Indicators .......................................................................................................................................3–2
Table 3-2. SDM-300A Custom Modem Defaults..................................................................................................3–74
Table 3-3. Modem Types....................................................................................................................................... 3–76
Table 3-4. IDR Parameter Settings ........................................................................................................................ 3–77
Table 3-5. IBS Parameter Settings......................................................................................................................... 3–78
Table 3-6. D&I Parameter Settings........................................................................................................................3–79
Table 3-7. N x 64 Chart .........................................................................................................................................3–79
Table 3-8. Asynchronous Parameter Settings ........................................................................................................ 3–80
Table 3-9. EFD Closed Network Parameter Settings............................................................................................. 3–82
Table 3-10. SDM-100 Emulation Parameter Settings............................................................................................3–83
Table 3-11. SDM-6000 Emulation Parameter Settings..........................................................................................3–84
Table 3-12. SDM-300A Revision Emulation.........................................................................................................3–85
Table 5-1. Conversion to S/N and E
b
/N
0
Chart....................................................................................................... 5–4
Table 5-2. SDM-300A Fault Tree............................................................................................................................ 5–9
Table A-1. FAST Options and Required Configurations........................................................................................ A–2
Table A-2. D&I Specifications................................................................................................................................ A–8
Table A-3. D&I Modem Defaults......................................................................................................................... A–18
Table A-4. ASYNC Remote Operation................................................................................................................. A–28
Table A-5. Local EIA-232 to Remote EIA-232.................................................................................................... A–30
Table A-6. Local EIA-232 to Remote EIA-485 (4-Wire)..................................................................................... A–31
Table A-7. Local EIA-232 to Remote EIA-485 (2-Wire)..................................................................................... A–32
Table A-8. Local EIA-485 (4-Wire) to Remote EIA-232..................................................................................... A–33
Table A-9. Local EIA-485 (4-Wire) to Remote EIA-485 (4-Wire)...................................................................... A–34
Table A-10. Local EIA-485 (4-Wire) to Remote EIA-485 (2-Wire).................................................................... A–35
Table A-11. Local EIA-485 (2-Wire) to Remote EIA-232................................................................................... A–36
Table A-12. Local EIA-485 (2-Wire) to Remote EIA-485 (4-Wire).................................................................... A–38
Table A-13. ASYNC/AUPC Modem Defaults..................................................................................................... A–40
Table A-14. Viterbi Specification......................................................................................................................... A–44
Table A-15. IDR Specification ............................................................................................................................. A–49
Table A-16. IDR Modem Defaults........................................................................................................................ A–50
Table A-17. IBS Specifications............................................................................................................................. A–53
Table A-18. IBS Modem Defaults........................................................................................................................ A–54
Table A-19. G.703 Specifications......................................................................................................................... A–59
Table A-20. Specifications.................................................................................................................................... A–61
SDM-300A Preface
Rev. 4 xiii
Table A-21. Specification Summary..................................................................................................................... A–77
Table A-22. MUX Data 100-Pin Connector (J10)................................................................................................ A–78
Table A-23. System Specification......................................................................................................................... A–80
Table A-24. Multiplexer Specification.................................................................................................................. A–81
Table A-25. Demultiplexer Specific Specifications.............................................................................................. A–82
Table A-26. 50-Pin Connector Pin Assignments .................................................................................................. A–85
Table C-1. General Specifications ...........................................................................................................................C–1
Table C-2. Modulator Digital Data Rate..................................................................................................................C–4
Table C-3. Modulation and Encoding Types ...........................................................................................................C–6
Table C-4. Demodulator Digital Data Rated..........................................................................................................C–12
Table C-5. Demodulation FEC Decoding..............................................................................................................C–13
Table C-6. BER Performance Reference Tables....................................................................................................C–18
Table C-7. Viterbi Decoder with Open Network BER Data..................................................................................C–19
Table C-8. Viterbi Decoder with Closed Network BER Data................................................................................C–21
Table C-9. Viterbi Decoder with Reed-Solomon...................................................................................................C–23
Table C-10. Sequential BER Data (56 kbit/s)........................................................................................................C–25
Table C-11. Sequential Decoder BER Data (1544 kbit/s)......................................................................................C–27
Table C-12. Sequential Decoder BER Curves (Reed-Solomon)...........................................................................C–29
Table C-13. 8PSK Specification............................................................................................................................C–31
Table C-14. Viterbi Decoder and OQPSK.............................................................................................................C–33
Table C-15. Uncoded (1/1) BPSK, QPSK, and OQPSK........................................................................................C–35
Table C-16. Acquisition Time................................................................................................................................C–37
Table C-17. IBS Specifications..............................................................................................................................C–48
Table C-18. D&I Specifications.............................................................................................................................C–50
Table C-19. IDR Specifications.............................................................................................................................C–52
Table C-20. Test Modes.........................................................................................................................................C–54
Table C-21. Minimum Doppler/Plesiochronous Buffer Capacity Requirements...................................................C–57
Preface SDM-300A
xiv Rev. 4
Overview of Revisions
This revision supersedes part number MN/SDM8000 Rev. 7 dated November 7, 1995.
A summary of the changes made for Rev. 7 includes:
Chapter 1 Revised Table 1-3 EFData Part Numbers for Various Modules
Chapter 3 Revised Menus to reflect Version 5.1.3
Incorporated Errata B
Revised Modem Type
Revised Table 3-2 and Table 3-12 to reflect software change
Appendix A Incorporated Errata A to Table A-16 IDR Modem Defaults
Appendix B Revised Remote Control Specification to version FW/6535-1G
Appendix C Revised pin matrix, J8 matrix, and the general table
Incorporated Errata C to add TX and RX data stable conditions
Added Doppler paragraph as C-13.
About this Manual
This manual provides installation and operation information for the Comtech EFData
SDM-300A satellite modem. This is a technical document intended for earth station
engineers, technicians, and operators responsible for the operation and maintenance of
the SDM-300A.
Related Documents
The following documents are referenced in this manual:
•
EFData UB-300 Universal Breakout Panel Installation and Operation Manual
•
EFData UB-54 Universal Breakout Panel Installation and Operation Manual
•
EFData SDR-54 Satellite Demodulator Installation and Operation Manual
•
EFData Space Link Remote System User’s Guide
•
INTELSAT Earth Station Standards 308, 309, and 310
•
International Telephone and Telegraph Consultative Committee V.335 and
G.721
SDM-300A Preface
Rev. 4 xv
Conventions and References
Cautions and Warnings
CAUTION
CAUTION 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.
WARNING
WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.
Recommended Standard Designations
Recommended Standard (RS) Designations have been superseded by the new designation
of the Electronic Industries Association (EIA). References to the old designations are
shown only when depicting actual text displayed on the screen of the unit (RS-232, RS-
485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.
Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies and are hereby acknowledged.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EFData Customer Support
Department.
Preface SDM-300A
xvi Rev. 4
European EMC Directive
In order to meet the European Electro-Magnetic Compatibility (EMC) Directive
(EN55022, EN50082-1), properly shielded cables for DATA I/O are required. More
specifically, these cables must be shielded from end-to-end, ensuring a continuous
ground shield.
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR> Type of power cord required for use in the European Community.
!
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
International Symbols:
Alternating Current.
Fuse.
Safety Ground.
Chassis Ground.
SDM-300A Preface
Rev. 4 xvii
Warranty Policy
This Comtech EFData product is warranted against defects in material and workmanship
for a period of one year from the date of shipment. During the warranty period, Comtech
EFData will, at its option, repair or replace products that prove to be defective.
For equipment under warranty, the customer is responsible for freight to Comtech
EFData and all related custom, taxes, tariffs, insurance, etc. Comtech EFData is
responsible for the freight charges
only
for return of the equipment from the factory to
the customer. Comtech EFData will return the equipment by the same method (i.e., Air,
Express, Surface) as the equipment was sent to Comtech EFData.
Limitations of Warranty
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repackaging of
equipment for return to Comtech EFData.
No other warranty is expressed or implied. Comtech EFData specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
Exclusive Remedies
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech
EFData shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
Disclaimer
Comtech EFData has reviewed this manual thoroughly in order that it will be an easy-to-
use guide to your equipment. All statements, technical information, and
recommendations in this manual 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. Further, Comtech EFData reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EFData Customer Support Department.
Rev. 4 1–1
1
Chapter 1.
INTRODUCTION
This chapter provides an overview of the SDM-300A satellite modem, referred to in this
manual as “the modem” (Figure 1-1).
Figure 1-1. SDM-300A
/