Comtech EF Data SDM-300A User Manual
Page 398
 
SDM-300A Satellite Modem
Revision 6
Remote Control Operation
MN/SLM3650.IOM
A–6
Modulator 
Encoder 
Type 
Command: 
Response: 
 
Status: 
Response: 
<add/MET_xxx’cr’ 
>add/MET_xxx’cr’’lf’] 
 
<add/MET_xxx’cr’ 
>add/MET_xxx’cr’’lf’] 
 
Where: xxx = VIT (K-7 VITERBI ENCODER), SEQ 
(SEQUENTIAL ENCODER), TUR (TURBO ENCODER) 
 
 
Modem 
Reference 
Clock 
Command: 
Response: 
 
Status: 
Response: 
<add/MRC_xxxxx’cr’ 
>add/MRC_xxxxx’cr’’lf’] 
 
<add/MRC_’cr’ 
>add/MRC_xxxxx’cr’’lf’] 
 
Where: xxxxx = INT (INTERNAL), EXT1 (EXTERNAL 1 
MHz), EXT5 (EXTERNAL 5 MHz), EXT10 (EXTERNAL 10 
MHz), EXT20 (EXTERNAL 20 MHz), OUT10 (OUTPUT 10 
MHz). 
 
Note: Must have High Stability option installed to select OUT 
10 (OUTPUT 10 MHz) 
Modulator 
Spectrum 
Rotation 
Command: 
Response: 
 
Status: 
Response: 
<add/MSR_xxx’cr’ 
>add/MSR_xxx’cr’’lf’] 
 
<add/MSR_’cr’ 
>add/MSR_xxx’cr’’lf’] 
 
Where: xxx = NRM (normal spectrum), INV (inverted 
spectrum). 
Reed-
Solomon 
Encoder 
Enable 
Command: 
Response: 
 
Status: 
Response: 
<add/RSEN_xxx’cr’ 
>add/RSEN_xxx’cr’’lf’] 
 
<add/RSEN_’cr’ 
>add/RSEN_xxx’cr’’lf’] 
 
Where: xxx = ON or OFF. 
 
Note: Always Off in Turbo mode. 
Transmit 
BPSK Data 
Ordering 
Command: 
Response: 
 
Status: 
Response: 
<add/TDA_xxx’cr’ 
>add/TDA_xxx’cr’’lf’] 
 
<add/TDA_xxx’cr’ 
>add/TDA_xxx’cr’’lf’] 
 
Where: xxx = NRM (STANDARD), INV (NON-STANDARD).
Carrier 
Only Mode 
Command: 
Response: 
 
Status: 
Response: 
<add/COM_xxxxxx’cr’ 
>add/COM_xxxxxx’cr’’lf’] 
 
<add/COM_xxxxxx’cr’ 
>add/COM_xxxxxx’cr’’lf’] 
 
Where: xxxxxx = OFF (NORMAL-MODULATED), DUAL 
(DUAL-CW), OFFSET (OFFSET-CW), CENTER (CENTER-
CW). 
TX Reed-
Solomon 
Interleave 
Value 
Command: 
Response: 
 
Status: 
Response: 
<add/TRSI_xx’cr’ 
>add/TRSI_xx’cr’’lf’] 
 
<add/TRSI_’cr’ 
>add/TRSI_xx’cr’’lf’] 
 
Where: xx = 4, 8, or 16.