Configuration commands/responses, Modulator – Comtech EF Data SNM-1002 User Manual
Page 130
SNM-1002 LinkSync
Modem
Revision 2
Remote Control Operation
MN/SNM1002.OM
A–4
A.3 Configuration
Commands/Responses
A.3.1 Modulator
Modulator
Frequency
Command:
Response:
Status:
Response:
RF_OFF'cr''lf']
Where: nnn.nnnn = Frequency in MHz,
50.000000 to 180.000000 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:
Where: xxx = ON or OFF.
Modulator
Rate Preset
Assignment
Command:
Response:
Status:
Response:
Where:
x = A, B, C, D, or V [preset designator].
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).
mmmm.mmm = Data rate in kHz.
Modulator
Rate Preset
Selection
Command:
Response:
Status:
RF_OFF'cr''lf']
See MR command.
Where: x = A, B, C, D, or V (preset
designator).
Note: Setting the modulator rate turns off the
RF transmitter.
Modulator
Rate Variable
Assignment &
Selection
Command:
Response:
Status:
RF_OFF'cr''lf']
See MR command.
Where:
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).
mmmm.mmm = Data rate in kHz.
Note: Setting the modulator turns off the RF
transmitter.
Set Modulator
Power Offset
Command:
Response:
Status:
Response:
Where: snn.n = +99.0 to -99.0, in 0.1 dB
increments.
Note: The modulator power offset is added to
the nominal power level to adjust the transmit
power range.