Priority System Commands And Queries - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710/L Broadcast Satellite Modem
Serial Interface Operation

9.4.4 Priority System Commands and Queries

Priority System = (Highest to lowest priority) RMM>RMD>RCR>RSR. Any change to a higher priority parameter can
override any of the parameters of lower priority.
Controller-to-Target
Instruction Code & Qualifier
Parameter
Type
Command Query
Rx Mode RMM= RMM?
Rx N/A RMD?
Modulation
Type
Number of
Arguments for
Command or
(Note that all arguments are ASCII numeric codes from 48 and 57)
Response to
Query
1 byte Command or Query.
Sets or returns the Rx Mode in the form x where:
0=DVB-S
1=DVB-S2
2=DVB-DSNG
NOTE: See Chapter 2. SPECIFICATIONS for available code rates, demodulation
types, and symbol rates for each mode.
COMMAND EXAMPLE: <0001/RMM=0{CR} (sets DVB-S Mode)
1 byte Command or Query.
Sets or returns the Rx Modulation type in the form x where:
0=QPSK
1=8PSK
2=16QAM
3=16APSK
4=32APSK
NOTES:
1) See Chapter 2. SPECIFICATIONS for available code rates, demodulation
types, and symbol rates for each mode.
2) If the demodulator is set to DVB-S2 mode, RMD functions as query-only
because the demodulation type is automatically detected
3) If the unit is not locked, the query returns 'x'.
COMMAND EXAMPLE: <0001/RMD=1{CR} (sets 8PSK)
9–50
Description of Arguments
MN/CDM710.IOM
Revision 12
Target-to-Controller
(See Description of Arguments)
Response to Response to
Command Query
RMM= RMM=x
RMM?
RMM*
RMM#
RMD? RMD=x
RMD*
RMD#