Comtech EF Data CDM-570AL - Page 277

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Serial-based Remote Product Management 8–11 MN-CDM570A
Parameter
Type
Command
(Instruction
Code and
Qualifier)
Arguments for
Command or
Response to
Query
Description of Arguments
Response to
Command
Query
(Instruction Code
and Qualifier)
Response to
Query
Tx FEC Type
TFT=
1 byte,
value of 0 thru 9,
A to B
Command or Query.
Sets or returns Tx FEC coding type in the form x, where:
0 = None (uncoded – no FEC) (forces TCR=7 Rate 1/1) with differential encoding
ON
1 = Viterbi
2 = Viterbi + Reed-Solomon
3 = Reserved – do not use
4 = Reserved – do not use
5 = TCM + Reed-Solomon (Forces TCR=3 Rate 2/3)
6 = Turbo
7 = Reserved
8 = VersaFEC CCM or ACM (fixed in IP-ACM) (see note)
9 = VersaFEC ULL (see note)
A = VersaFEC-2 Long (see note)
B = VersaFEC-2 Short (see note)
Note: Entries 8 through B are valid only in CDM-570A Compatible Mode (CMO=1).
Example: <0/TFT=1 (Viterbi coding)
TFT=
TFT?
TFT*
TFT#
TFT+
TFT?
TFT=x
(see Description
of Arguments)
Tx Modulation
Type
TMD=
1 byte,
value of 0 thru 8
Command or Query.
Sets or returns Tx Modulation type in the form x, where:
0 = BPSK
1 = QPSK
2 = OQPSK
3 = 8PSK
4 = 16-QAM
5 = 8-QAM (TPC/LDPC only) (Need Codec & FAST option)
6 = 8-ARY (VersaFEC-2 only)
7 = 16-ARY (VersaFEC-2 only)
8 = 32-ARY (VersaFEC-2 only)
Note: Selection availability depends on the active FEC type.
Example: <0/TMD=2 (OQPSK)
TMD=
TMD?
TMD*
TMD#
TMD+
TMD?
TMD=x
(see Description
of Arguments)