Comtech EF Data SDM-300A - Manual (Page 396)

SDM-300A Satellite Modem Revision 6
Remote Control Operation MN/SLM3650.IOM
A–4
A.5 Modulator Configuration Commands
Modulator
Frequency Command:
Response:
Status:
Response: <add/MF_nnn.nnnnnn'cr'
>add/MF_nnn.nnnnnn'cr'
RF_OFF'cr''lf']
<add/MF_'cr'
>add/MF_nnn.nnnnnn'cr''lf']
Where: nnn.nnnnnn = 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: <add/RF_xxx'cr'
>add/RF_xxx'cr''lf']
<add/RF_'cr'
>add/RF_xxx'cr''lf']
Where: xxx = ON or OFF.
Modulator
Rate Preset
Assignment
(Sets the
pre-
assigned
rates) Command:
Response:
Status:
Response: <add/AMRx_nnnn_mmmm.mmm'cr'
>add/AMRx_nnnn_mmmm.mmm'cr''lf']
<add/AMRx_'cr'
>add/AMRx_nnnn_mmmm.mmm'cr''lf']
Where:
x = A, B, C, D, or V [preset designator].
For Non-Turbo nnnn = 1/2 (QPSK 1/2), [coder rate], 3/4
(QPSK 3/4), 7/8 (QPSK 7/8), BP12 (BPSK 1/2), OQ12
(OQPSK 1/2), OQ34 (OQPSK 3/4), and OQ78 (OQPSK 7/8),
OQSK (OQPSK 1/1), BPSK (BPSK 1/1), QPSK (QPSK 1/1),
and 8P23 (8PSK 2/3)
For Turbo nnnn= 8P34 (8PSK 3/4), 2144 (BPSK 21/44),
B516 (BPSK 5/16), 1/2 (QPSK 1/2), OQ12 (OQPSK 1/2), 3/4
(QPSK 3/4), and OQ34 (OQPSK 3/4)
mmmm.mmm = Data rate in kbps.
Modulator
Rate Preset
Selection
(Selects the
pre-
assigned
rates) Command:
Response:
Status:
<add/SMRx_'cr'
>add/SMRx_'cr'
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.