Comtech EF Data CDM-710L Spécifications Page 109
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
CDM-710 Broadcast Satellite Modem Revision 10
Forward Error Correction Options MN/CDM710.IOM
DVB-S2 Short FECFrame = 16,200 bits*
(QPSK 1/4, 1/3 and 2/5 are for information purposes)
Type
Inner
FEC
Code
***Es/No
At PER =
10
-7
Spectral
Efficiency
(bps/Hz)
Normalized
Symbol Rate
(= Bit Rate x)
** Occupied
BW for
10 Mbps
(25% Rolloff)
Spectral
Efficiency
(bps/Hz)
Normalized
Symbol Rate
(= Bit Rate x)
** Occupied
BW for
10 Mbps
(25% Rolloff)
Pilots Off Pilots On
QPSK 1/4 -1.55 0.365324 2.737 31.479 0.357467 2.797 32.171
QPSK 1/3 -0.44 0.629060 1.590 18.281 0.615532 1.625 18.683
QPSK 2/5 0.50 0.760928 1.314 15.113 0.744564 1.343 15.445
QPSK 1/2 1.80 0.848840 1.178 13.548 0.830585 1.204 13.846
QPSK 3/5 3.03 1.156532 0.865 9.944 1.131661 0.884 10.162
QPSK 2/3 3.90 1.288400 0.776 8.926 1.260693 0.793 9.122
QPSK 3/4 4.83 1.420269 0.704 8.097 1.389725 0.720 8.275
QPSK 4/5 5.48 1.508181 0.663 7.625 1.475747 0.678 7.793
QPSK 5/6 5.98 1.596093 0.627 7.205 1.561768 0.640 7.363
QPSK 8/9 7.00 1.727961 0.579 6.655 1.690800 0.591 6.802
QPSK 9/10 7.22 NA NA NA NA NA NA
8PSK 3/5 6.50 1.725319 0.580 6.665 1.692033 0.591 6.797
8PSK 2/3 7.62 1.922040 0.520 5.983 1.884959 0.531 6.101
8PSK 3/4 8.91 2.118761 0.472 5.428 2.077885 0.481 5.534
8PSK 5/6 10.45 2.381056 0.420 4.830 2.335120 0.428 4.925
8PSK 8/9 11.79 2.577778 0.388 4.461 2.528046 0.396 4.549
8PSK 9/10 12.08 NA NA NA NA NA NA
16APSK 2/3 10.27 2.548792 0.392 4.512 2.505223 0.399 4.590
16APSK 3/4 11.51 2.809662 0.356 4.093 2.761633 0.362 4.164
16APSK 4/5 12.33 2.983575 0.335 3.854 2.932574 0.341 3.921
16APSK 5/6 12.91 3.157488 0.317 3.642 3.103514 0.322 3.705
16APSK 8/9 14.19 3.418357 0.293 3.364 3.359924 0.298 3.423
16APSK 9/10 14.43 NA NA NA NA NA NA
32APSK 3/4 14.03 3.493093 0.286 3.292 3.419165 0.292 3.363
32APSK 4/5 14.94 3.709309 0.270 3.100 3.630805 0.275 3.167
32APSK 5/6 15.58 3.925526 0.255 2.930 3.842446 NA NA
32APSK 8/9 16.99 4.249850 0.235 2.706 4.159906 0.240 2.764
32APSK 9/10 17.35 NA NA NA NA NA NA
* Es/No for short FECFrame is about 0.3 dB higher than the standard. Values in the table are
approximate.
** Taken at the -10 dB points on the plot of power spectral density, the occupied bandwidth is
1.19 x Symbol Rate for 35% and 1.15 x Symbol Rate for 25%
*** Includes implementation loss.
Figures 7-1 through 7-7 illustrate the error performance characteristics. To convert Es/No to Eb/No
use Eb/No = Es/No - 10xLog(Spectral Efficiency).
7–5
- Broadcast Satellite Modem 1
- CDM-710 3
- Table of Contents 5
- Figures 12
- Preface 13
- Preface MN/CDM710.IOM 14
- Electrical Safety 15
- Environmental 15
- Installation 16
- International Symbols: 16
- CE Mark 16
- RoHS Compliancy 16
- Warranty Policy 18
- Limitations of Warranty 18
- Exclusive Remedies 19
- Chapter 1. INTRODUCTION 21
- Introduction MN/CDM710.IOM 22
- 1.2.2 Verification 24
- 1.3 Major Assemblies 26
- 1.4 New in this Manual 26
- Chapter 2. INSTALLATION 27
- Installation MN/CDM710.IOM 28
- PHYSICAL DESCRIPTIONS 31
- Chapter 3. FUNCTIONAL AND 31
- 3.2 Front Panel 32
- 3.3 Dimensional Envelope 33
- 4.1 External Connections 35
- Chapter 5. FRONT PANEL 41
- OPERATION 41
- 5.1.2 Front Panel Keypad 43
- 5.1.4 Menu Matrix 45
- 5.2 Opening Screen 46
- 5.3 SELECT: (Main) Menu 46
- 5.3.1 (SELECT:) CONFIG 47
- ENTER 49
- 5.3.1.2 (CONFIG:) Tx 51
- (CONFIG:) Tx Æ FEC 51
- (CONFIG:) Tx Æ Mod 52
- (CONFIG:) Tx Æ Code 54
- (CONFIG:) Tx Æ SymRate 54
- (CONFIG:) Tx Æ Mode 56
- (CONFIG:) Tx Æ Frequency 57
- (CONFIG:) Tx Æ Pwr 57
- (CONFIG:) Tx Æ Scram 58
- 5.3.1.3 (CONFIG:) Rx 59
- (CONFIG:) Rx Æ FEC 59
- (CONFIG:) Rx Æ Dem (Demod) 59
- (CONFIG:) Rx Æ Code 62
- (CONFIG:) Rx Æ SymRate 62
- (CONFIG:) Rx Æ Mode 63
- (CONFIG:) Rx Æ Freq 63
- (CONFIG:) Rx Æ Eb/No 63
- (CONFIG:) Rx Æ PLL 64
- (CONFIG:) Intfc1 ASI: Æ Tx 64
- (CONFIG:) Intfc1 ASI: Æ Rx 65
- (CONFIG:) Intfc1 HSSI: Æ Tx 67
- (CONFIG:) Intfc1 HSSI: Æ Rx 68
- For this discussion: 71
- 5.3.1.7 (CONFIG:) Ref 80
- 5.3.1.8 (CONFIG:) Aux 80
- 5.3.1.9 (CONFIG:) Alarms 81
- 5.3.2 (SELECT:) Monitor 82
- RX Traffic: 83
- Demod Unlocked (E) 83
- Unit Fault: No Errors 83
- (E) 83
- For DVB-S and DVB-DSNG only: 84
- Stored Events: View 85
- Clear-All (E) 85
- Log015 23/05/06 09:27:15 85
- Fault – No PHY Link (cb) 85
- 5.3.3 (SELECT:) Test 87
- (SELECT:) Test: Æ Mode 88
- (Available Some Interfaces) 89
- 5.3.4 (SELECT:) INFO 90
- (SELECT:) INFO: Æ Rem 90
- (SELECT:) INFO: Æ Tx 90
- (SELECT:) INFO: Æ Rx 91
- 5.3.5 (SELECT:) Save/Load 92
- (SELECT:) Save/Load: Æ Save 92
- (SELECT:) Save/Load: Æ Load 93
- (UTIL:) Firmware Æ Info 96
- (UTIL:) Firmware Æ Select 98
- (UTIL:) FAST ÆConfiguration 98
- (UTIL:) FAST Æ View 99
- Chapter 6. FLASH UPGRADING 101
- IMPORTANT 104
- Chapter 7. FORWARD ERROR 105
- CORRECTION OPTIONS 105
- 7.3.1 Range of Data Rates 106
- Eb/No (dB) 110
- DVB-S: QPSK BER vs Eb/No 110
- Es/No (dB) 113
- DVB-S2: 8-PSK PER vs Es/No 114
- DVB-S2: 16-APSK PER vs Es/No 115
- Chapter 8. SUMMARY OF 117
- SPECIFICATIONS 117
- 8.3 70/140 MHz Modulator 119
- 8.4 L-Band Modulator 120
- Relative power (dB) 121
- 8.5 70/140 MHz Demodulator 122
- 8.6 L-Band Demodulator 122
- Maximum Level 123
- Minimum Level 123
- 8.7 Test Functions 125
- 8.8 Monitor Functions 125
- 8.9 Remote Port Operation 126
- 8.10 Data Rate Range 126
- Chapter 9. SNMP INTERFACE 129
- 9.3 SNMP Community Strings 131
- 9.4 SNMP Traps 131
- 9.5 Common Private MIB 131
- 9.5.2 Remote Serial Group 131
- Chapter 10. CDI-40 ASI 135
- Data Interface 135
- 10.2 General Specifications 138
- 10.3.1 MPEG-2 Null Packet 139
- 10.4 Connector Pinouts 140
- 10.4.1 ASI Connector Pinout 140
- 10.5 ASI Interface Defaults 140
- (GbE) INTERFACE 141
- 11.2 Physical Description 142
- 11.3 General Specifications 142
- 11.4 Connector Pinout 145
- 12.1 Introduction 151
- 12.2 Physical Description 152
- 12.3 General Specifications 153
- Continuous Clock 154
- Gap Clock 154
- Chapter 13. WEB SERVER 155
- 13.2 Web Server Login 156
- 13.2.2 Login Prompt 157
- 13.3 Home Pages 158
- 13.3.1 Home Page 158
- 13.3.2 Contact Information 159
- 13.3.3 Support 160
- NOTE 161
- Appendix A. REMOTE CONTROL 163
- A.3 RS-232 164
- A.4 Basic Protocol 164
- A.5 Packet Structure 164
- A.5.1 Start Of Packet 165
- A.5.2 Address 165
- A.5.3 Instruction Code 165
- A.5.5 Message Arguments 167
- A.5.6 End Of Packet 167
- A.6.1 Modulator 171
- P= Reserved 182
- R= Reserved 182
- A.6.2 Demodulator 190
- N/A 5 bytes Query only 192
- A.6.3 Modem 210
- A.6.4 Priority System 217
- 1xxxxxxxxxx1250.0000101.00 240
- Appendix B. Eb/No 245
- MEASUREMENT 245
- METRIC CONVERSIONS 251
- Units of Length 251
- Temperature Conversions 251
- Units of Weight 251
- • 333 • 2200 PHONE 252
- • 333 • 2161 FAX 252
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