Comtech-ef-data CDM-740 User Manual Page 61
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CDM-740 Advanced Satellite Modem Revision 0
Front Panel Operation MN-CDM740
5–9
5.4.2 CONFIG: Rx
Rx-IF Freq FEC Demod Data Descram Pilot
(Data 9980.000kbps, 2851.429ksym) (◄►)
Select IF, Freq, FEC, Demod, Data, Descram, or Pilot using the ◄ ► arrow keys, then press
ENTER.
5.4.2.1 (CONFIG:) Rx Æ IF
Alpha Rolloff: .20 (.20,.25,.35)
Spectrum Invert: (◄►E)
When in DVB-S2 mode only: To set the expected filter Rx Alpha Rolloff (α) of the carrier, on
the top line select .20 (20%), .25 (25%), or .35 (35%) using the
▲ ▼ arrow keys. The default
selection is 0.20 (20%).
The Rx Alpha Rolloff (α) dictates how fast the spectral edges of the carrier are attenuated beyond
the 3 dB bandwidth. With 20% rolloff the edge falls off more quickly than with 25% and 35%.
Note: This menu is not valid in DVB-S mode, where the Rx Alpha Rolloff (α) is fixed at 35%.
To set Rx Spectrum Inversion, use the the ◄ ► arrow keys to move to the Spectrum Invert
operation on the bottom line, then set operation as On or Off using the
▲ ▼ arrow keys.
Once the Alpha Rolloff and Rx Spectrum Inversion settings are made, press ENTER.
5.4.2.2 (CONFIG:) Rx ÆFreq (Frequency)
Rx-IF Frequency: 0050.0000 MHz
(◄►E)
To edit the Rx-If Frequency, select each digit to be edited using the ◄ ► arrow keys, then edit the
value of that digit using the
▲ ▼ arrow keys. Press ENTER when done.
The available frequency ranges are 0050.0000 to 0180.0000 (50-180) MHz, and 0950.0000 to
2150.0000 (950-2150) MHz (L-Band). The resolution is 100Hz.
5.4.2.3 (CONFIG:) Rx Æ FEC
Rx FEC: LDPC+BCH
This is a ‘status only’ message. The CDM-740 features LDPC+BCH (Low-Density Parity Check
+ Bose, Chaudhuri, and Hocquengham) FEC as its sole available Rx FEC type.
- Advanced Satellite Modem 1
- Errata A 3
- Errata Page 2 of 4 4
- Errata Page 3 of 4 5
- Errata Page 4 of 4 6
- CDM-740 7
- Table of Contents 9
- Table of Contents MN-CDM740 10
- Figures 15
- PREFACE 17
- Preface MN-CDM740 18
- Low Voltage Directive (LVD) 19
- Installation 19
- Environmental 19
- CE Mark 20
- RoHS Compliance 20
- Warranty Policy 21
- Limitations of Warranty 21
- Exclusive Remedies 22
- Customer Support 23
- Online Customer Support 23
- Chapter 1. INTRODUCTION 25
- 1.2 Functional Description 26
- Introduction MN-CDM740 27
- 1.3 Features 28
- 1.3.1 Physical Description 28
- 1.3.2 Compatibility 28
- 1.3.3 Major Assemblies 28
- 1.3.4 Dimensional Envelope 29
- 1.3.5 Physical Features 30
- 1.3.5.1 Front Panel 30
- 1.3.6 Rear Panel 31
- 1.3.7 Data Interfaces 31
- 1.3.8 Verification 31
- FAST System Theory 32
- FAST Implementation 32
- FAST Accessible Options 32
- 1:1 Redundancy Applications 33
- 1.4 New in this Release 33
- 1.5.1 Transmit / Modulator 34
- 1.5.3 Data Interfaces 36
- 1.5.4 Data Rate Ranges 36
- 1.5.5 Miscellaneous 37
- 1.5.6 Approvals 37
- Chapter 2. INSTALLATION 39
- 2.2 Mounting 40
- Installation MN-CDM740 41
- Chapter 3. REAR PANEL 43
- CONNECTOR PINOUTS 43
- CA UTION 45
- 3.4 Utility Connections 46
- 3.4.1 TERM Connector, RJ-12 46
- Chapter 4. FLASH UPGRADING 49
- Flash Upgrading MN-CDM740 50
- ... Please wait 51
- SELECT: 52
- Utility Æ Firmware Æ Select 52
- Chapter 5. FRONT PANEL 53
- OPERATION 53
- 5.1.2 Front Panel Keypad 54
- 5.2.1 Opening Screen 55
- 5.2 Front Panel Menu 55
- 5.3 SELECT: (Main) Menu 57
- 5.4 SELECT: Configuration 58
- 5.4.1 CONFIG: Tx 58
- 5.4.1.1 (CONFIG:) Tx Æ IF 58
- 5.4.1.4 (CONFIG:) Tx Æ FEC 59
- 5.4.1.6 (CONFIG:) Tx Æ Data 60
- 5.4.2 CONFIG: Rx 61
- 5.4.2.1 (CONFIG:) Rx Æ IF 61
- 5.4.2.3 (CONFIG:) Rx Æ FEC 61
- 5.4.2.5 (CONFIG:) Rx Æ Data 62
- Rx Descrambling Index: 63
- Rx Demod Pilot: Off On 63
- (◄►E) 63
- 5.4.3 CONFIG: Clocks 66
- 5.4.4 CONFIG: Remote 67
- 5.4.5 CONFIG: IP 67
- 5.4.6 CONFIG: Misc 70
- 5.5 SELECT: Test 71
- 5.5.1 TEST: Mode 71
- 5.5.2 TEST: BERT 71
- 5.5.2.1 TEST: Pattern 71
- 5.6 SELECT: Monitor 72
- 5.6.1 Monitor: Live-Alarms 72
- 5.6.3 Monitor: Rx-Params 73
- 5.6.4 Monitor: IP-Stats 74
- 5.7 SELECT: Store/Ld 75
- (Store/Load:) Override 75
- 5.8 SELECT: Utility 76
- 5.8.1 Utilities: Set-RTC 76
- 5.8.3 Utilities: 1:1 76
- 5.8.5 Utilities: Circuit-ID 77
- 5.8.6 Utilities: Firmware 78
- 5.9 SELECT: ODU 79
- 5.9.1 ODU: (BUC:) BUC_LO 79
- 5.9.1.1 ODU: (BUC:) Power 80
- 5.9.1.2 ODU: (BUC:) 10M-Ref 80
- 5.9.1.3 ODU: (BUC) Alarm 80
- 5.9.1.4 ODU: (BUC) Monitor 80
- 5.9.1.5 ODU: (LNB) LNB_LO 80
- 5.9.1.6 ODU: (LNB) 22K-Tone 81
- 5.9.1.7 ODU: (LNB) Polarity 81
- 5.10 SELECT: FAST 82
- 5.10.1 FAST: Options 82
- 5.10.2 FAST: Configure 82
- 5.10.3 FAST: Demo-Mode 83
- Chapter 6. ETHERNET 85
- MANAGEMENT 85
- 6.4 Telnet Interface 87
- 6.5.2 Web Server Menu Tree 88
- 6.5.3 User Login 89
- 6.5.4.1 Home (Splash) Page 90
- 6.5.4.2 Management Pages 91
- Slot Information 95
- Firmware Configuration 95
- 6.5.4.3 Network Pages 97
- Negotiated Link Mode 98
- Management Gateway Port 98
- LNB Freq (MHz) 100
- Rx Freq (MHz) 100
- Symbol Rate (ksps) 100
- Data Rate (kbps) read-only 100
- Current Routes – Tuner 1 102
- Add PID 103
- Tx Freq (MHz) 104
- Tx Interface Type 104
- Tx FEC Type 104
- Tx Modulation Type 104
- Modulator Section 104
- 6.5.4.7 Statistics Pages 107
- 6.5.4.8 Monitor Page 111
- 6.5.4.9 Utility Page 112
- Tuner 1 Constellation 113
- Appendix A. REMOTE CONTROL 115
- A.4 Packet Structure 116
- A.4.1 Start of Packet 116
- A.4.2 Target Address 116
- A.4.3 Address Delimiter 116
- A.4.4 Instruction Code 116
- A.4.7 End of Packet 118
- A.5.1 Tx Parameters 120
- Remote Control MN-CDM740 121
- A.5.2 Rx Parameters 123
- A.5.3 Unit Parameters 126
- A.5.5 Modem Information 133
- Appendix B. FAST Activation 139
- Procedure 139
- B.2.1 Serial Number 140
- B.2.3 Enter Access Codes 140
- Appendix C. 1:1 Redundancy 141
- C.2 Introduction 142
- IMPOR TANT 143
- 1:1 Redundancy MN-CDM740 144
- METRIC CONVERSIONS 149
- Units of Length 149
- Temperature Conversions 149
- Units of Weight 149
- 480 • 333 • 2200 PHONE 150
- • 333 • 2161 FAX 150
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