Comtech EF Data CDM-570A - Manual (Page 258)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Serial-based Remote Product Management Revision 2
8–18
8.3.3 Receive (Rx) Parameter Commands and Queries
Rx Priority System = RFT (Highest priority), RMD, RCR, RDR, and RSR (Lowest Priority), indicated by shading. Any change to a higher
priority parameter will override any of the lower priority parameters.
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
Rx FEC Type RFT= 1 byte,
value of 0 thru 6
Command or Query.
Sets or returns Rx FEC Type in the form x, where:
0 = None (uncoded – no FEC) with differential encoding ON
1 = Viterbi
2 = Viterbi + Reed-Solomon
3 = Reserved – do not use
4 = Reserved – do not use
5 = TCM + Reed-Solomon
6 = Turbo
7 = Reserved
8 = VersaFEC CCM or ACM (fixed in IP-ACM) (see note)
9 = VersaFEC ULL (see note)
Note: Entries 8 and 9 are valid only in CDM-570A Compatible Mode (CMO=1).
Example: <0/RFT=1 (Viterbi only)
RFT=
RFT?
RFT*
RFT#
RFT+
RFT? RFT=x
(same format
as command
argument)
Rx Demod type RMD= 1 byte,
value of 0 thru 5
Command or Query.
Sets or returns Rx Demodulation in the form x, where:
0 = BPSK
1 = QPSK
2 = OQPSK
3 = 8PSK
4 = 16QAM
5 = 8-QAM
Note: Selection availability depends on the active FEC type.
Example: <0/RMD=2 (OQPSK)
RMD=
RMD?
RMD*
RMD#
RMD+
RMD? RMD=x
(see Description
of Arguments)