Comtech EF Data SLM-5650A Installation And Operation Manual page 370

SLM-5650A Satellite Modem
Appendix C
Command
Parameter (Instruction
Type Code and
Qualifier)
Rx Data Invert RDI= 1 byte, value of 0
or 1
Rx Descrambler RDS= 1 byte, value of 0
thru 6
Rx REA= 3 bytes
Reacquisition
Time
Rx Frequency N/A 5 bytes
Offset
Rx Frequency RFQ= 9 bytes
Arguments for
Command or
Response to
Query
Command or Query.
Invert Receive Data, where:
0=Normal
1=Inverted
Example: RDI=1 (selects Inverted RX Data)
Command or Query.
Rx Scrambler state, where:
0 = Off
1 = OM-73 Scrambler
2 = IESS-V.35 Scrambler
3 = Modified V.35 (Comtech EF Data Closed Network)
4 = Reed-Solomon Synchronous Scrambler
5 = IBS Overhead Synchronous Scrambler
6 = TURBO Scrambler
Depending on Modem mode, FEC type, overhead type, and RS state, not all
selections will be valid.
Example: RDS=1 (OM-73 Scrambler On)
Command or Query.
Rx reacquisition time, in seconds, ranging from 0 to 999.
Example: REA=000 (selects 0 seconds)
Query only.
Unit returns the value of the measured frequency offset of the carrier being
demodulated.
Values range from ± 0 to ± 30 kHz, 100 Hz resolution.
Returns 99999 if the demodulator is unlocked.
Example: RFO=+02.3 (selects + 2.3 kHz)
Command or Query.
Rx Frequency, 52 to 88 MHz, 104 to 176 MHz, and 950 to 2000 MHz.
Resolution = 100Hz.
Example: RFQ=0140.9872
Description of Arguments
C–18
Revision 8
MN-SLM5650A
Query
Response to (Instruction
Response to Query
Command Code and
Qualifier)
RDI = RDI? RDI=x
RDI? (see Description
RDI* of Arguments)
RDI#
RDS= RDS? RDS=x
RDS? (see Description
RDS* of Arguments)
RDS#
REA= REA? REA=xxx
REA? (see Description
REA* of Arguments)
REA#
N/A RFO? RFO=xxxxx
(see Description
of Arguments)
RFQ= RFQ? RFQ=xxxx.xxxx
RFQ? (see Description
RFQ* of Arguments)
RFQ#