Radyne DMDVB20 LBST Betriebsanleitung Seite 47
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DMDVB20 LBST Satellite Modem User Interfaces
TM138 – Rev. 1.0 4-11
SWEEP RANGE (kHz) {+/- 0.10 * Symbol Rate up to 7.5 MHz}
Allows the user to set the acquisition range for the
demodulator
INPUT LVL THRESH {-30 to 90 dbm}
Allows the user to adjust the low level threshold limit for
input power. Input power level below the threshold limit
will trigger a major alarm on the demodulator.
EB/NO ALARM {0.0 to 9.90 db}
Allows the user to set the desired E
b
/N
o
for the local
receiver. This setting is compared against the receive
E
b
/N
o
and commands to the remote modem to increase
or decrease Transmit Power accordingly are sent.
DATA (menu)
DATA RATE (bps) {Refer to Technical Specs for Data Rates}
Allows the user to set the Data Rate in bps steps via the
Front Panel Arrows or Keypad.
SYMB RATE (sps) Allows the user to view the Symbol Rate.
Maximum SR is 10 MSps
INNER FEC DVB-S2:
Normal Block Size: Viterbi {1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10}
8PSK {3/5, 2/3, 3/4, 5/6, 8/9, 9/10}
16APSK {2/3, 3/4, 4/5, 5/6, 8/9, 9/10}
Short Block Size: Viterbi {1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9}
8PSK {3/5, 2/3, 3/4, 5/6, 8/9}
16APSK {2/3, 3/4, 4/5, 5/6, 8/9}
Allows the user to select the Rx Code Rate and Type
SAT FRAMING {DVB-S2 NORMAL, DVB-S2 SHORT}
Allows the user to select the LDPC decoder frame size.
Default is DVB-S2 NORMAL.
TERR FRAMING {NONE, 188, 204}, when using DVB Network Spec
DATA POLARITY { NONE, INV. BASEBAND, INV.TERR DATA, INV.
TERR & BASE,}
Allows the user to invert the Rx Data polarity.
PILOT SYMBOLS {DISABLED, ENABLED}
Allows the user to turn on or off pilot symbol insertion.
Default is off.
- DMDVB20 LBST 1
- Warranty Policy 2
- Preface 4
- Trademarks 5
- Copyright 5
- Disclaimer 5
- Record of Revisions 5
- Table of Contents 6
- TM138 – Rev. 1.0 ix 8
- TM138 – Rev. 1.0 xi 10
- Introduction 12
- 1.1.1 Feature Upgrades 13
- 1.1.3 Hardware Options 13
- 1.2 Function Accessibility 13
- TM138 – Rev. 1.0 1-3 14
- Installation 15
- 2.1 Unpacking 16
- 2.2 Removal and Assembly 16
- 2.3 Mounting Considerations 17
- 2-4 TM138 – Rev. 1.0 18
- 2.5 Modulator Checkout 19
- 2.5.1 Initial Power-Up 19
- 2.6 Storage 19
- 2-6 TM138 – Rev. 1.0 20
- Theory of Operation 21
- 3-2 TM138 – Rev. 1.0 22
- 3.1.1 Front Panel 24
- 3.1.2 Baseband Processing 24
- TM138 – Rev. 1.0 3-5 25
- 3-6 TM138 – Rev. 1.0 26
- 3.3 Internal Clock 27
- TM138 – Rev. 1.0 3-9 29
- 3.5 Clocking Options 30
- 3.5.1 TX Clock Options 30
- 3.5.2.1 RX SAT Clock 32
- 3.7.3 Interleaving 33
- 3-14 TM138 – Rev. 1.0 34
- TM138 – Rev. 1.0 3-15 35
- 3-16 TM138 – Rev. 1.0 36
- User Interfaces 37
- 4.1.3 Numeric Keypad 38
- 4.2 Parameter Setup 40
- 4.3.1 Main Menus 40
- TM138 – Rev. 1.0 4-5 41
- 4-6 TM138 – Rev. 1.0 42
- TM138 – Rev. 1.0 4-7 43
- 4-8 TM138 – Rev. 1.0 44
- TM138 – Rev. 1.0 4-9 45
- 4-10 TM138 – Rev. 1.0 46
- TM138 – Rev. 1.0 4-11 47
- 4-12 TM138 – Rev. 1.0 48
- TM138 – Rev. 1.0 4-13 49
- 4-14 TM138 – Rev. 1.0 50
- TM138 – Rev. 1.0 4-15 51
- 4-16 TM138 – Rev. 1.0 52
- TM138 – Rev. 1.0 4-17 53
- 4-18 TM138 – Rev. 1.0 54
- TM138 – Rev. 1.0 4-19 55
- 4-20 TM138 – Rev. 1.0 56
- TM138 – Rev. 1.0 4-21 57
- 4-22 TM138 – Rev. 1.0 58
- TM138 – Rev. 1.0 4-23 59
- 4-24 TM138 – Rev. 1.0 60
- TM138 – Rev. 1.0 4-25 61
- 4-26 TM138 – Rev. 1.0 62
- TM138 – Rev. 1.0 4-27 63
- 4-28 TM138 – Rev. 1.0 64
- 4.4 Terminal Mode Control 65
- 4.6 Connecting the Terminal 66
- 4.7 Terminal Screens 66
- TM138 – Rev. 1.0 4-31 67
- Rear Panel Interfaces 68
- 5-2 TM138 – Rev. 1.0 69
- 5.3.5 EXT CLK (J16) 70
- 5.3.7 (J18) 70
- 5.3.8 EIA-530 (J19) 71
- 5.3.9 REMOTE (J20) 72
- 5-6 TM138 – Rev. 1.0 73
- 6.0 Periodic Maintenance 74
- 6.0.1 Clock Adjustment 74
- 6.1 Troubleshooting 74
- 6.1.1 Alarm Faults 75
- 6.1.1.1 Major Tx Alarms 75
- 6.1.1.2 Major Rx Alarms 76
- 6.1.1.3 Minor Tx Alarms 76
- 6.1.1.4 Minor Rx Alarms 77
- 6.1.1.5 Common Major Alarms 77
- TM138 – Rev. 1.0 6-5 78
- 6-6 TM138 – Rev. 1.0 79
- Technical Specifications 80
- 7.2 Demodulator 81
- 7.3 Monitor and Control 81
- TM138 – Rev. 1.0 7-3 82
- 7-4 TM138 – Rev. 1.0 83
- 7.8.2 DVB 84
- 7-6 TM138 – Rev. 1.0 85
- TM138 – Rev. 1.0 7-7 86
- 7-8 TM138 – Rev. 1.0 87
- TM138 – Rev. 1.0 7-9 88
- Product Options 89
- A-2 TM138 – Rev. 1.0 90
- B.0 Introduction 91
- B.1 Required Equipment 91
- B.2 Upgrade Procedure 91
- B-2 TM138 – Rev. 1.0 92
- B.3 Demonstration Procedure 93
- B-4 TM138 – Rev. 1.0 94
- TM138 – Rev. 1.0 95
- B-6 TM138 – Rev. 1.0 96
- Carrier Control 98
- C.5 Carrier RTS 99
- TM138 – Rev. 1.0 C-3 100
- Strap Codes 101
- D.1 Sample Applications 104
- TM138 – Rev. 1.0 D-5 105
- D-6 TM138 – Rev. 1.0 106
- TM138 – Rev. 1.0 D-7 107
- Glossary 108
- G-2 TM138 – Rev. 1.0 109
- TM138 – Rev. 1.0 G-3 110
- G-4 TM138 – Rev. 1.0 111
- TM138 – Rev. 1.0 G-5 112
- G-6 TM138 – Rev. 1.0 113
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