Comtech EF Data SLM-5650A - Manual (Page 370)

SLM-5650A Satellite Modem Revision 8
Appendix C MN-SLM5650A
C–18
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 Data Invert RDI= 1 byte, value of 0
or 1
Command or Query.
Invert Receive Data, where:
0=Normal
1=Inverted
Example: RDI=1 (selects Inverted RX Data)
RDI =
RDI?
RDI*
RDI#
RDI? RDI=x
(see Description
of Arguments)
Rx Descrambler RDS= 1 byte, value of 0
thru 6
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
Reacquisition
Time
REA= 3 bytes Command or Query.
Rx reacquisition time, in seconds, ranging from 0 to 999.
Example: REA=000 (selects 0 seconds) REA=
REA?
REA*
REA#
REA? REA=xxx
(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.
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)
N/A RFO? RFO=xxxxx
(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)