Configuration commands/responses, Modulator configuration commands – Comtech EF Data SNM-1001L User Manual
Page 279
SNM-1001L Satellite Modem
Revision 1
Remote Control Operation MN/SNM1001L.IOM
B–5
B.3
Configuration Commands/Responses
B.3.1
Modulator Configuration Commands
Modulator
Frequency
Command:
Response:
Status:
Response:
RF_OFF'cr''lf']
Where: nnnnn.nnnn = Frequency in MHz, 950.0000 to
1750.0000 in 100 Hz steps for non-terminal frequency
display.
For terminal frequency mode, the range will be
determined by the LO frequency and high/low Mix of the
ODU.
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 ½ Turbo and non-Turbo), [coder
rate], 3/4 (QPSK 3/4 Turbo and non-Turbo), 7/8
(QPSK 7/8), BP12 (BPSK ½), 8P23 (8PSK 2/3), OQ12
(OQPSK 1/2Turbo and non-Turbo), OQ34 (OQPSK
3/4 Turbo and non-Turbo), OQ78 (OQPSK 7/8), BPSK
(BPSK1/1 Turbo and non-Turbo), QPSK (QPSK 1/1
Turbo and non-Turbo), OQSK (OQPSK 1/1 Turbo,
and non-Turbo), 2144 (BPSK 21/44 Turbo Only),
B516 (BPSK 5/16 Turbo Only), and 8P34 (8PSK 3/4
Turbo Only).
mmmm.mmm = Data rate in kHz.
Burst Mode = nnnn= 1/2
mmmm.nnn = 19.2 or 57.6 kbps
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: mmmm.mmm = Data rate in kHz.
nnnn = 1/2 (QPSK ½ Turbo and non-Turbo), [coder
rate], 3/4 (QPSK 3/4 Turbo and non-Turbo), 7/8
(QPSK 7/8), BP12 (BPSK 1/2), 8P23 (8PSK 2/3),
OQ12 (OQPSK 1/2 Turbo and non-Turbo), OQ34
(OQPSK 3/4Turbo and non-Turbo), OQ78 (OQPSK
7/8), BPSK (BPSK1/1 Turbo and non-Turbo), QPSK
(QPSK 1/1 Turbo and non-Turbo), OQSK (OQPSK 1/1
Turbo, and non-Turbo), 2144 (BPSK 21/44 Turbo
Only), B516 (BPSK 5/16 Turbo Only), and 8P34
(8PSK 3/4 Turbo Only).
mmmm.mmm = Data rate in kHz.
Burst Mode = nnnn= 1/2
mmmm.nnn = 19.2 or 57.6 kbps
Note: Setting the modulator turns off the RF transmitter.