Modulator commands/responses, A.3 modulator commands/responses – Comtech EF Data SNM-1010L User Manual
Page 201
SNM-1010L Data/Control Modem
Revision 0
Remote Control Channel Commands/Responses
MN/SNM1010L.OM
A.3 Modulator
Commands/Responses
Modulator Frequency
Command:
Response:
Status:
Response:
MC MF_nnn.nnnn'cr'
MF_nnn.nnnn'cr'
RF_OFF'cr''lf']
MC MF_'cr'
MF_nnn.nnnn'cr''lf']
Where: nnn.nnnn = Frequency in MHz, 950.0000 to
1750.0000, in 1 Hz steps.
Note: When the modulator frequency is programmed,
the RF output is switched OFF.
RF Output (IF Output)
Command:
Response:
Status:
Response:
MC RF_xxx'cr'
RF_xxx'cr''lf']
MC RF_'cr'
RF_xxx'cr''lf']
Where: xxx = ON or OFF.
Modulator Rate Preset
Assignment
Command:
Response:
Status:
Response:
MC AMRx_nnnn_mmm.mmm'cr'
AMRx_nnnn_mmm.mmm'cr''lf']
MC AMRx_'cr'
AMRx_nnnn_mmm.mmm'cr''lf']
See Warning in Section A.1.
Where:
x = A, B, C, D or V (Preset designator).
In TX Burst mode,
nnnn = 1/2, or 3/4 (Coder rate).
In TX continuous mode,
nnnn = 1/2 (QPSK 1/2), [coder rate], 3/4 (QPSK 3/4),
7/8 (QPSK 7/8), BP12 (BPSK 1/2), 8P23 (8PSK 2/3),
OQ12 (OQPSK 1/2), OQ34 (OQPSK 3/4), OQ78
(OQPSK 7/8), OQSK (OQPSK 1/1), BPSK (BPSK
1/1) (QPSK (QPSK 1/1),
2144 (BPSK 21/44), B516 (BPSK 5/16), 8P34 (8PSK
3/4).
mmm.mmm = Data rate in kHz.
Modulator Rate Preset
Selection
Command:
Response:
Status:
MC SMRx_'cr'
SMRx_'cr'
RF_OFF'cr''lf']
(See MR command.)
See Warning in Section A.1.
Where: x = A, B, C, D, or V (Preset designator).
Note: Setting the modulator rate turns the RF
transmitter OFF.
Modulator Rate Variable
Assignment and
Selection
Command:
Response:
Status:
MC SMRV_nnnn_mmm.mmm'cr'
SMRV_nnnn_mmm.mmm'cr'
RF_OFF'cr''lf']
(See MR command.)
See Warning in Section 9.0.
Where:
In TX Burst mode,
nnnn = 1/2 or 3/4 (Coder rate).
In TX Continuous mode,
nnnn = 1/2 (QPSK 1/2), [coder rate], 3/4 (QPSK 3/4),
7/8 (QPSK 7/8), BP12 (BPSK 1/2), 8P23 (8PSK 2/3),
OQ12 (OQPSK 1/2), OQ34 (OQPSK 3/4), OQ78
(OQPSK 7/8), OQSK (OQPSK 1/1), BPSK (BPSK
1/1) (QPSK (QPSK 1/1),
2144 (BPSK 21/44), B516 (BPSK 5/16), 8P34 (8PSK
3/4).
mmm.mmm = Data rate in kHz.
Note: Setting the modulator turns the RF transmitter
OFF.
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