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User Interfaces DD240XR High-Speed Digital Demodulator
4-6 MN-DD240XR – Rev. E
SAT FRAMING FECFRAME
Select NORMAL n_ldpc = 64,800 or
SHORT n_ldpc = 16,200
DATA RATE (bps): Terrestrial Data Rate:
Enter in 1 bps increments from 2,000,000 to 160,000,000
BPS.
SYMB RATE (sps): Output Symbol Rate:
Enter in 1 sps increments from 2,000,000 to 45,000,000
sps.
SPECTRUM: {AUTO DETECT}
This is the commanded spectrum detection. Select
NORMAL or INVERTED. This display is not user
selectable for DVBS 8PSK or 16QAM, where it is fixed
as AUTO DETECT.
ROLL OFF: DVB-S: {0.20, 0.35} for QPSK/8PSK/16QAM.
DVB-S2 {20, .25, .35} for QPSK/8PSK/16APSK
PILOT SYMBOLS: {ON, OFF}
Used to enable pilot symbol for DVB-S2 only
GOLD SEQ N: {012345}
Gold code sequence number for DVB-S2 only
LAST RATE CTRL: {SYMBOL RATE, DATA RATE, AUTO}
Indicates the rate (symbol or data) which is maintained
when associated parameters (i.e. Modulation, Inner FEC
Code Rate, Terr Framing) are changed. For example, if
the Last Rate Control is set to “Symbol Rate” and the
modulation is subsequently changed, the system will
attempt to maintain the same symbol rate by adjusting
the data rate. If the Last Rate Control is set to “Data
Rate” and the modulation is subsequently changed, the
system will attempt to maintain the same data rate by
adjusting the symbol rate.
- DD240XR 1
- Warranty Policy 3
- Comtech EF Data Corporation 4
- Preface 5
- Table of Contents 7
- MN-DD240XR – Rev. E ix 9
- Introduction 11
- 1-2 MN-DD240XR – Rev. E 12
- Installation 13
- chassis under any 13
- 2.1 Unpacking 14
- 2.2 Removal and Assembly 14
- 2.4 Demodulator Checkout 15
- 2.4.1 Initial Power-Up 15
- 2-4 MN-DD240XR – Rev. E 17
- Theory of Operation 19
- 3-2 MN-DD240XR – Rev. E 20
- User Interfaces 21
- 4.1.3 Front Panel Keypad 22
- 4.1.5 Parameter Setup 23
- 4-4 MN-DD240XR – Rev. E 24
- 4.2.1 Main Menus 25
- 4-6 MN-DD240XR – Rev. E 26
- MN-DD240XR – Rev. E 4-7 27
- 4-8 MN-DD240XR – Rev. E 28
- MN-DD240XR – Rev. E 4-9 29
- 4-10 MN-DD240XR – Rev. E 30
- MN-DD240XR – Rev. E 4-11 31
- 4-12 MN-DD240XR – Rev. E 32
- MN-DD240XR – Rev. E 4-13 33
- 4-14 MN-DD240XR – Rev. E 34
- MN-DD240XR – Rev. E 4-15 35
- 4-16 MN-DD240XR – Rev. E 36
- MN-DD240XR – Rev. E 4-17 37
- 4-18 MN-DD240XR – Rev. E 38
- MN-DD240XR – Rev. E 4-19 39
- 4-20 MN-DD240XR – Rev. E 40
- MN-DD240XR – Rev. E 4-21 41
- 4-22 MN-DD240XR – Rev. E 42
- MN-DD240XR – Rev. E 4-23 43
- 4-24 MN-DD240XR – Rev. E 44
- MN-DD240XR – Rev. E 4-25 45
- 4-26 MN-DD240XR – Rev. E 46
- {XXXXXXXXXXXX} 47
- 4.3.1 Protocol Structure 48
- 4.3.2 Protocol Wrapper 48
- MN-DD240XR – Rev. E 4-29 49
- 4-30 MN-DD240XR – Rev. E 50
- 4.3.5 Collision Avoidance 51
- 4-32 MN-DD240XR – Rev. E 52
- 4.3.7 RLLP Summary 53
- 4-34 MN-DD240XR – Rev. E 54
- MN-DD240XR – Rev. E 4-35 55
- 4-36 MN-DD240XR – Rev. E 56
- MN-DD240XR – Rev. E 4-37 57
- 4-38 MN-DD240XR – Rev. E 58
- MN-DD240XR – Rev. E 4-39 59
- 4-40 MN-DD240XR – Rev. E 60
- MN-DD240XR – Rev. E 4-41 61
- 4-42 MN-DD240XR – Rev. E 62
- MN-DD240XR – Rev. E 4-43 63
- 4-44 MN-DD240XR – Rev. E 64
- MN-DD240XR – Rev. E 4-45 65
- 4-46 MN-DD240XR – Rev. E 66
- MN-DD240XR – Rev. E 4-47 67
- 4-48 MN-DD240XR – Rev. E 68
- MN-DD240XR – Rev. E 4-49 69
- 4-50 MN-DD240XR – Rev. E 70
- MN-DD240XR – Rev. E 4-51 71
- 4-52 MN-DD240XR – Rev. E 72
- MN-DD240XR – Rev. E 4-53 73
- 4-54 MN-DD240XR – Rev. E 74
- MN-DD240XR – Rev. E 4-55 75
- 4-56 MN-DD240XR – Rev. E 76
- MN-DD240XR – Rev. E 4-57 77
- 4-58 MN-DD240XR – Rev. E 78
- MN-DD240XR – Rev. E 4-59 79
- 4-60 MN-DD240XR – Rev. E 80
- MN-DD240XR – Rev. E 4-61 81
- 4-62 MN-DD240XR – Rev. E 82
- MN-DD240XR – Rev. E 4-63 83
- 4-64 MN-DD240XR – Rev. E 84
- MN-DD240XR – Rev. E 4-65 85
- 4-66 MN-DD240XR – Rev. E 86
- MN-DD240XR – Rev. E 4-67 87
- 4-68 MN-DD240XR – Rev. E 88
- Electrical Interfaces 89
- 5.1 AC Power 90
- 5.2 PCMCIA Interface (J1) 90
- 5.2.1 Feature Upgrade 90
- 5.2.2 Firmware Update 91
- 5.4 Alarm Port (J3) 91
- 5.5 Remote Port (J4) 92
- 5.6 Terminal Port (J5) 92
- 5.8 RX IF IN (J7) 92
- 5.9 J8 Ports 93
- 5-6 MN-DD240XR – Rev. E 94
- 5.13 ECL Interface 95
- 5.13.1 ECL Balanced (J8) 95
- 5-8 MN-DD240XR – Rev. E 96
- MN-DD240XR – Rev. E 5-9 97
- 5-10 MN-DD240XR – Rev. E 98
- MN-DD240XR – Rev. E 5-11 99
- 5-12 MN-DD240XR – Rev. E 100
- MN-DD240XR – Rev. E 5-13 101
- 5-14 MN-DD240XR – Rev. E 102
- Maintenance 104
- 6-2 TM115 – Rev. 1.2 105
- Technical Specifications 107
- 7.3.1 DVB-S2-CCM 108
- 7.6 Monitor and Control 109
- 7.7 Environmental 110
- 7.8 Physical 110
- 7.9 Options 110
- MN-DD240XR – Rev. E 7-5 111
- 7-6 MN-DD240XR – Rev. E 112
- MN-DD240XR – Rev. E 7-7 113
- 7-8 MN-DD240XR – Rev. E 114
- MN-DD240XR – Rev. E 7-9 115
- 7-10 MN-DD240XR – Rev. E 116
- Glossary 117
- G-2 MN-DD240XR – Rev. E 118
- MN-DD240XR – Rev. E G-3 119
- G-4 MN-DD240XR – Rev. E 120
- MN-DD240XR – Rev. E G-5 121
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