Comtech EF Data CDM-710, Installation And Operation Manual

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CDM-710 Broadcast Satellite Modem Revision 11
Appendix A MN/CDM710.IOM
A–29
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
Redundancy
State
RED= 1 byte Command or Query.
Unit returns the redundancy state of the unit in the form x, where:
0 = Offline
1 = Online
Notes:
1. This command can be used to force the unit offline, this is done by sending
RED=0. This is only valid if redundancy mode is enabled – if redundancy is not
enabled, then RED=0 will return an error. The unit cannot be forced online.
2. If the unit is not in redundancy mode, then the unit will always be online.
Example: RED=0 (force unit offline)
RED=
RED?
RED*
RED# RED? RED=x
(See Description of
Arguments)
Rx Frequency
Offset
N/A 5 bytes Query only.
Unit returns the value of the measured frequency offset of the carrier being
demodulated in the form sxxx.x. Values range from
±
0 to
±
100 kHz, 100 Hz
resolution.
Returns 999999 if the demodulator is unlocked.
Example: RFO=+002.3 (which is + 2.3 kHz)
RFO?
RFO*
RFO# RFO? RFO=sxxx.x
Rx Frequency
RFQ= 9 bytes Command or Query.
Rx Frequency (in MHz) in the form xxxx.xxxx:
52 to 88 MHz, and 104 to 176 MHz (70/140 Modulator)
950 to 1950 MHz (L-Band Modulator)
Resolution=100Hz.
Example: RFQ=0950.0000
RFQ=
RFQ?
RFQ*
RFQ#
RFQ? RFQ=xxxx.xxxx
Rx Frame Size
N/A 1 byte Query only.
Rx Frame Size Long/Short selection in the form x, where:
0=Short,
1=Long
Example: RFS =0 (which is Short Frame Size)
Note: Valid only in DVB-S2 mode. If the unit is not locked, the query returns ‘x’.
RFS?
RFS *
RFS # RFS? RFS =x
Rx FEC Type
N/A 1 byte Query only.
Rx FEC coding type in the form x, where:
0=V Reed-Solomon
1=LDPC
Note: FEC is dependent on the RX Mode Type.
Example: RFT=1 (which is LDPC coding)
RFT?
RFT*
RFT# RFT? RFT=x
Rx Gold Code
Sequence
Index
RGS= 6 bytes Command or Query.
Rx Gold Code Sequence Index:
xxxxxx = Gold Code Sequence index ( 0 to 262141 )
Example: RGS=189063
Note: Valid only in DVB-S2 mode.
RGS=
RGS?
RGS*
RGS# RGS? RGS=xxxxxx