Comtech EF Data SLM-5650B - Page 355

SLM-5650B Satellite Modem
Revision 2
Appendix C C–27 MN-SLM-5650B
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 Descrambler RDS= 1 byte 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)
RDS=
RDS?
RDS*
RDS#
RDS? RDS=x
(see Description
of Arguments)
Rx Frequency
Offset
N/A
9 bytes
Query only.
Unit returns the value of the measured frequency offset of the carrier
being demodulated, where e = ‘<’, ‘>’, or ‘=’ and s = ‘+’ or ‘-‘.
Returns >+9999999 if offset is > 9.999999 MHz
Returns <-9999999 if offset is < -9.999999 MHz
Returns =+0000200 if offset = 200 Hz
Example: RFO = +0000200
N/A
RFO?
RFO=
esyyyyyyy
(see Description
of Arguments)
Rx Frequency RFQ= 9 bytes Command or Query.
Rx Frequency, 52 to 88 MHz, 104 to 176 MHz, and 950 to 2000 MHz.
Resolution = 100Hz.
Example: RFQ = 0140.9872
RFQ=
RFQ?
RFQ*
RFQ#
RFQ? RFQ=xxxx.xxxx
(see Description
of Arguments)