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CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Introduction MN/CDMQx.IOM
1–8
Table 1-1. CDM-Qx/QxL Rear Panel Connectors – Base Chassis
Connector Group Connector Name
Connector Type
Function
Power (Sect. 3.2.1)
A
C See Sect. 3.5.1
Chassis power
DC (optional, CDM-QxL only)
See Sect. 3.5.2
Ground (Sect. 3.2.2) #10-32 stud
Common Chassis Ground
Utility
(Sects. 3.2.3, 3.2.4,
3.2.6, 3.3.1)
M&C 10/100 (Sect. 3.2.3) RJ-45
10/100 BaseT Remote Interface
485/232 (Sect 3.2.4) 9-pin Type ‘D’ female
EIA Remote Interface
Ref (Sect 3.2.6) BNC 50Ω female
External reference for modem synthesizers
A
larms (not p/o base chassis
–
typical
for each data interface) (Sect. 3.3.1)
15-pin Type ‘D’ male Form C Alarms (relay closures)
IF (Sect. 3.2.5)
Rx
CDM
-
Q
x
:
BNC female (70/140MHz band)
IF Input
CDM
-
Qx
L
:
Type ’N’ female (L
-
Band)
Tx
CDM
-
Q
x
:
BNC female (70/140MHz band)
IF Output
CDM
-
Qx
L
:
Type ’N’ female (L
-
Band)
Terrestrial Data
(Sect. 3.3)
Connectors vary dependant on the installed data interface (G.703 Bal, G.703 Unbal, EIA-530, Quad E1, or HSSI) module.
See Sect. 3.3.x for complete information about the connectors associated with these interfaces.
Note: The European EMC Directive (EN55022, EN50082-1) requires using properly shielded cables for DATA
I/O. These cables must be double-shielded from end-to-end, ensuring a continuous ground shield.
1.3.6 Hardware Options
1.3.6.1 CDM-Qx/QxL Hardware Options
There are four hardware options available:
• The first hardware option, Comtech EF Data’s Turbo Product Codec (TPC), represents
a very significant development in the area of Forward Error Correction (FEC). It provides
one of the best FEC technologies currently available, and is now offered with a sufficient
range of code rates and modulation types to optimize link performance under any
conditions.
Turbo Product Codec consists of a plug-in daughter card (SIMM module) that is field
upgradeable. The TPC option provides data rate capability up to 20 Mbps, with the
following code rates:
o Rate 5/16 (BPSK)
o Rate 21/44 (BPSK, QPSK)
o Rate 3/4 (QPSK, 8-PSK, and 16-QAM)
o Rate 7/8 (QPSK, 8-PSK, and 16-QAM)
o Rate 17/18 (QPSK, 8-PSK)
• The second hardware option is the Internal Reference Stability. The high stability
option includes a 6 x 10
-8
10 MHz reference oscillator on the IF Backplane board, while
the low stability option has a 1 x 10
-6
10 MHz reference on the IF Backplane board. This
option must be configured in the factory at the time of order.
• The third hardware option is the IF Impedance and Connectors. The IF may be
configured with either BNC female connectors at 75Ω impedance, BNC female
- Table of Contents 5
- Figures 14
- 15
- PREFACE 17
- Cautions and Warnings 18
- Trademarks 18
- Electrical Safety 18
- Environmental 19
- Installation 19
- CE Mark 20
- RoHS Compliancy 20
- Warranty Policy 22
- Limitations of Warranty 22
- Exclusive Remedies 23
- Customer Support 24
- Online Customer Support 24
- Chapter 1. INTRODUCTION 25
- 1.1.3 Turbo Product Coding 26
- 1.2 Functional Description 27
- Introduction MN/CDMQx.IOM 28
- 1.3 Features 29
- 1.3.1 Physical Description 29
- 1.3.2 Compatibility 29
- 1.3.3 Major Assemblies 29
- 1.3.4 Dimensional Envelope 30
- 1.3.5 Physical Features 30
- 1.3.5.1 Front Panel 30
- 1.3.5.2 Rear Panel 31
- 1.3.6 Hardware Options 32
- 1.3.6.2 CDM-QxL L-Band 33
- 1.3.7 Data Interfaces 33
- 1.3.8 Verification 33
- 1.3.9 AUPC 33
- 1.3.10 EDMAC 34
- FAST System Theory 35
- FAST Implementation 35
- FAST Accessible Options 35
- Redundancy Applications 36
- 1.4 New in this Release 37
- 1.5.1 Modulator 38
- 1.5.2 Demodulator 39
- 1.5.3 Data Interfaces 42
- 1.5.5 Data Rate Ranges 43
- 1.5.7 Miscellaneous 44
- 1.5.8 Approvals 44
- Chapter 2. INSTALLATION 45
- 2.2 Mounting 46
- Installation MN/CDMQX.IOM 47
- 2.3 Configuration 48
- Chapter 3. REAR PANEL 51
- CONNECTORS 51
- 3.2.1 Power Connector 54
- 3.2.1.1 AC Power Connector 54
- 3.2.2 Ground Connector 54
- CA UTION 55
- HSSI Interface 60
- Chapter 4. FLASH UPGRADING 63
- Chapter 5. FRONT PANEL 67
- OPERATION 67
- 5.1.3 Keypad 69
- ENTER 70
- 5.1.4.1.1 Modems 71
- 5.1.4.1.2 Redundancy 71
- 5.1.4.1.3 Spectrum Analyzer 72
- 5.3 MAIN MENU Screen 74
- 5.4.2.1 CONFIG: Tx Æ FEC 80
- 5.4.2.2 CONFIG: Tx Æ Mod 80
- 5.4.2.3 CONFIG: Tx Æ Code 81
- 5.4.2.4 CONFIG: Tx Æ Data 81
- 5.4.2.5 CONFIG: Tx Æ Freq 82
- 5.4.2.8 CONFIG: Tx Æ Scram 85
- 5.4.2.9 CONFIG: Tx Æ Clk 85
- 5.4.2.10 CONFIG: Tx Æ Inv 86
- CONFIG: Tx Æ Inv Æ Spectrum 86
- CONFIG: Tx Æ Inv Æ Data 86
- CONFIG: Tx Æ Inv Æ Clock 86
- 5.4.2.11 CONFIG: Tx Æ Txα 86
- 5.4.3.1 CONFIG: Rx Æ FEC 88
- 5.4.3.2 CONFIG: Rx Æ Demod 88
- 5.4.3.3 CONFIG: Rx Æ Code 89
- 5.4.3.4 CONFIG: Rx Æ Data 89
- 5.4.3.5 CONFIG: Rx Æ Freq 90
- 5.4.3.6 CONFIG: Rx Æ Acq 91
- 5.4.3.8 CONFIG: Rx Æ Buf 92
- CONFIG: Rx Æ CnC Æ Mode 94
- CONFIG: Rx Æ CnC Æ FrqOffs 94
- CONFIG: Rx Æ CnC Æ SrchDelay 95
- CONFIG: Rx Æ CnC Æ ReAcq 95
- 5.4.4 CONFIG: Group 95
- 5.4.5 CONFIG: Frame 97
- Drp-CH/TS 98
- Displays the Tx Data Rate 98
- Ins-CH/TS 98
- Displays the Rx Data Rate 98
- 5.4.6 CONFIG: Interface 99
- 5.4.7 CONFIG: Ref 102
- 5.4.8 CONFIG: Mask 103
- CONFIG: Mask Æ Receive Æ AGC 103
- IMPORTANT 104
- CONFIG: ODU Æ BUC Æ DC-Pwr 105
- CONFIG: ODU Æ BUC Æ Mix 107
- 5.4.9.2 CONFIG: ODU Æ LNB 107
- CONFIG: ODU Æ LNB Æ 10MHz 107
- CONFIG: ODU Æ LNB Æ Alarm 107
- CONFIG: ODU Æ LNB Æ LO 108
- CONFIG: ODU Æ LNB Æ Mix 108
- 5.5.2 MONITOR: Rx-Params 110
- 5.5.3 MONITOR: Event-Log 110
- 5.5.4 MONITOR: Stats 112
- 5.6 (MAIN MENU:) Test 116
- 5.6.1 TEST: Mode 116
- IF LOOPBACK 117
- 5.6.3 TEST: Spec-Analyzer 118
- TEST: Spec-Analyzer Æ Mode 118
- TEST: Spec-Analyzer Æ Config 118
- TEST: Spec-Analyzer Æ Span 119
- 5.7.1 INFO: Rem 119
- 5.7.2 INFO: Tx 120
- 5.7.3 INFO: Rx 121
- 5.7.4 INFO: Buffer 121
- 5.7.5 INFO: Frame 122
- 5.7.6 INFO: Interface 122
- 5.7.7 INFO: Mask 122
- 5.7.8 INFO: Ref 122
- 5.7.9 INFO: ID 122
- 5.8 (MAIN MENU:) Save/Load 123
- 5.9 (MAIN MENU:) Utility 124
- 5.9.1 UTILITY: RxBuffer 124
- 5.9.2 UTILITY: Clock 124
- 5.9.3 UTILITY: Ref 125
- 5.9.4 UTILITY: ID 125
- 5.9.5 UTILITY: Display 125
- 5.9.6 UTILITY: Firmware 126
- 5.9.7 UTILITY: FAST 128
- UTILITY: FAST Æ Base 128
- UTILITY: FAST Æ Base Æ View 129
- UTILITY: FAST Æ Slot# 129
- Chapter 6. ETHERNET 131
- MANAGEMENT 131
- 6.3.3 SNMP Traps 132
- 6.4 Telnet Interface 134
- 6.5.2 Web Server Menu Tree 136
- 6.5.3 User Login 137
- 6.5.4.1 Home Page 138
- 6.5.4.1.1 Home 138
- IMPOR TANT 140
- 6.5.4.2 Admin Pages 141
- Host Access List 142
- Modem Group 148
- Internal Redundancy 148
- Redundancy Mode 148
- Frequency Reference 148
- Interface / Framing 148
- Modulator Parameters 149
- Demodulator Parameters 149
- Status Page – ‘Tx’ Selected 150
- Events Log 152
- Alarm Mask 152
- Statistics Log 153
- Test Mode 156
- BERT Results 156
- Spectrum Analyzer Knobs 157
- Real-Time Clock 160
- Firmware Image Selection 160
- Modem Configuration 160
- (View) FAST/HW Options 161
- Rx Buffer 161
- BUC Configuration 164
- BUC Status 164
- LNB Control 165
- LNB Status 165
- Chapter 7. FORWARD ERROR 167
- CORRECTION OPTIONS 167
- 7.3.1 Closed Network Modes 169
- 7.4 Trellis Coding 169
- 7.5.1 Introduction 170
- FOR AGAINST 173
- Decoding 174
- Viterbi with 175
- RS 220,200 175
- Outer Code 175
- 8-PSK/TCM Rate 2/3 176
- Decoding, with and 176
- Rate 3/4 QPSK, 8-PSK 177
- Comtech Turbo Product Codec 177
- Rate 21/44 BPSK 180
- Rate 5/16 BPSK 180
- POWER CONTROL (AUPC) 183
- Chapter 8. AUTOMATIC UPLINK 183
- 8.3 Compensation Rate 185
- 8.4 Monitoring 185
- Chapter 9. DoubleTalk 187
- Carrier-in-Carrier 187
- 9.3 System Functionality 188
- Figure 9-4 through 191
- 9.4.3 Carrier-in-Carrier 194
- Ratio (CnC Ratio) 194
- 9.4.4 Symbol Rate Ratio 195
- Carrier(s) 196
- 9.4.7 2 198
- 9.4.8 3 199
- 9.5 Conclusion 200
- Chapter 10. EDMAC CHANNEL 201
- 10.2 M&C Connection 202
- 10.3 Setup Summary 203
- EDMAC Channel MN/CDMQX.IOM 204
- Chapter 11. REDUNDANCY 205
- Redundancy MN/CDMQX.IOM 206
- Appendix A. CABLE DRAWINGS 207
- User data 208
- Appendix A MN/CDMQX.IOM 209
- Appendix B. FAST ACTIVATION 213
- PROCEDURE 213
- Appendix B MN/CDMQX.IOM 214
- B.2.3 Acquire FAST Code 217
- B.2.4 Enter FAST Codes 217
- Appendix C. REMOTE CONTROL 219
- C.3 EIA-232 220
- C.4 Basic Protocol 220
- C.5 Packet Structure 220
- C.5.7 End of Packet 223
- Appendix C MN/CDMQX.IOM 225
- Command or Query 229
- C.6.4 Queries 242
- N/A 6 bytes Query only 246
- METRIC CONVERSIONS 259
- Units of Length 259
- Temperature Conversions 259
- Units of Weight 259
- 480 • 333 • 2200 PHONE 260
- • 333 • 2161 FAX 260
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