Comtech EF Data CDM-625A Installation And Operation Manual page 18

CDM-625A Advanced Satellite Modem
Table of Contents
B.2 Viterbi ................................................................................................................................ B–1
B.3 Sequential .......................................................................................................................... B–2
B.4 Reed-Solomon Outer Codec ................................................................................................ B–3
B.4.1 Closed Network Modes ............................................................................................................................ B–3
B.4.2 Open Network Modes .............................................................................................................................. B–4
B.5 Trellis Coding (FAST Option) ................................................................................................ B–4
B.6 Turbo Product Codec (Hardware Option) ............................................................................. B–5
B.7 TPC and Low Density Parity Check (LDPC) coding ................................................................. B–6
B.7.1 Introduction ............................................................................................................................................... B–6
B.7.2 LDPC versus TPC ........................................................................................................................................ B–7
B.7.3 End-to-End Processing Delay ................................................................................................................ B–10
B.8.1 VersaFEC Extensions .............................................................................................................................. B–13
B.8.1.1 Extended CCM Codes........................................................................................................................ B–13
B.8.1.2 Ultra-Low-Latency (ULL) Codes ........................................................................................................ B–13
B.9 Uncoded Operation (No FEC) ............................................................................................. B–14
APPENDIX C. AUPC (AUTOMATIC UPLINK POWER CONTROL) ................................... C–1
C.1 Introduction ....................................................................................................................... C–1
C.2 Setting AUPC Parameters .................................................................................................... C–2
C.2.1 Target Eb/No ............................................................................................................................................. C–2
C.2.2 Max Range ................................................................................................................................................. C–2
C.2.3 Alarm .......................................................................................................................................................... C–3
C.2.4 Demod Unlock ........................................................................................................................................... C–3
C.3 Compensation Rate ............................................................................................................. C–3
C.4 Monitoring ......................................................................................................................... C–4
APPENDIX D. CARRIER ID (METACARRIER
D.1 Introduction ...................................................................................................................... D–1
D.2 About MetaCarrier ............................................................................................................. D–1
D.3 Functional Description ....................................................................................................... D–2
D.4 Configuring the CDM-625A for Carrier ID Operation ............................................................ D–3
D.4.1 Enabling Carrier ID Operation ................................................................................................................. D–4
D.4.1.1 Enabling Operation via the CDM-625A Front Panel and VFD ........................................................ D–4
D.4.1.2 Enabling Operation via the CDM-625A Web Server (HTTP) Interface .......................................... D–4
D.4.2 Creating the MetaCarrier Custom Message ......................................................................................... D–5
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) ................................................................. D–1
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MN-CDM625A