Comtech EF Data SDM-300A Operating instructions

Brand: Comtech EF Data

Model: SDM-300A

Type: Operating instructions

Part Number MN/SDM300A.IOM Revision 4

SDM-300A

Satellite Modem

Installation and O

eration Manual

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

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

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