Mocomtech CDM-570 User Manual
Page 84
CDM-570/570L Satellite Modem with Optional IP Module
Revision 4
Preface
MN/CDM570L.IOM
vi
6.15
TEST ........................................................................................................................6–50
6.16
INFO (INFORMATION) ............................................................................................6–52
6.16.1
(INFO) ALL...........................................................................................................6–52
6.16.2
(INFO) TX (Transmit information) ........................................................................6–52
6.16.3
(INFO) RX (Receive information).........................................................................6–53
6.16.4
(INFO) BUFF (Buffer information)........................................................................6–53
6.16.5
(INFO) FRAME (Framing and EDMAC information) ............................................6–54
6.16.6
(INFO) INTFC (Interface information) ..................................................................6–54
6.16.7
(INFO) REMCONT (Remote Control information) ...............................................6–55
6.16.8
(INFO) MASK (Alarm mask information)..............................................................6–55
6.16.9
(INFO) REF (Frequency Reference)....................................................................6–55
6.16.10
(INFO) ID (Circuit ID) ...........................................................................................6–56
6.16.11
(INFO) 1:1 (1:1 Redundancy information)............................................................6–56
6.17
SAVE/LOAD .............................................................................................................6–56
6.17.1
(SAVE/LOAD) SAVE............................................................................................6–56
6.17.2
(SAVE/LOAD) LOAD ...........................................................................................6–57
6.18
UTILITY ....................................................................................................................6–58
6.18.1
(UTIL) BUFFER (Buffer re-center) .......................................................................6–58
6.18.2
(UTIL) CLOCK (Set real-time clock) ....................................................................6–58
6.18.3
(UTIL) REF (Reference).......................................................................................6–59
6.18.4
(UTIL) ID (Circuit ID) ............................................................................................6–61
6.18.5
(UTIL) 1:1 (Manual 1:1 switchover)......................................................................6–61
6.18.6
(UTIL) VFD (VFD Display brightness)..................................................................6–61
6.18.7
(UTIL) FIRMWARE ..............................................................................................6–62
6.18.8
(UTIL) FAST (FAST code options).......................................................................6–63
Chapter 7.
FORWARD ERROR CORRECTION OPTIONS ................................................7–1
7.1
INTRODUCTION............................................................................................................7–1
7.2
VITERBI .........................................................................................................................7–2
7.3
REED-SOLOMON OUTER CODEC (HARDWARE OPTION) .......................................7–2
7.4
TRELLIS CODING (REQUIRES 8-PSK/8-QAM FAST OPTION) ..................................7–4
7.5
TURBO PRODUCT CODEC (HARDWARE OPTION)...................................................7–5
7.5.1
Introduction .............................................................................................................7–5
7.5.2
TPC modes available in the CDM-570/570L...........................................................7–5
7.5.3
8-QAM Modulation ..................................................................................................7–6
7.5.4
End-to-End Processing Delay.................................................................................7–6
7.5.5
Comparison of all TPC Modes ................................................................................7–7
7.6
UNCODED OPERATION (NO FEC)..............................................................................7–8
7.7
RATES ABOVE 2.5 MSYMBOLS/SEC ..........................................................................7–9
Chapter 8.
OFFSET QPSK OPERATION.............................................................................8–1