Comtech EF Data SDR-54A - Manual (Page 85)

SDR-54A Satellite Demodulator Revision 4
Remote Control Specification MN/SDR54A.IOM
A.4 Status Commands/Responses
Demodulator
Status Command:
Response:
<1/DS_'cr'
>1/DS_'cr'
CD_xxx'cr'
BERT_xxx'cr'
SYN_xxx'cr'
FPGA_xxx'cr'
DSP_xxx'cr'
LNB_xxx'cr'
DMX_xxx'cr'
RS_xxx'cr''lf']
Carrier Detect (OK/FLT)
BER Threshold (OK/FLT)
RF Lock Detect (OK/FLT)
FPGA Load Error (OK/FLT)
DSP Communications (OK/FLT)
LNB Power (OK/FLT/OFF)
Demux Fault (OK/FLT/OFF)
Reed-Solomon (OK/FLT/OFF)
This status command queries the fault detection section of
the demodulator. Errors for the sections indicated below are
reported.
E
b
/N
0
Status Command:
Response:
<1/EBN0_'cr'
>1/EBN0_xnn.ndB'cr''lf']
Where:
x = < or > (data modifier to indicate that the E
b
/N
0
is less
than or greater than the returned value).
nn.n = 1.0 to 99.9 in dB (E
b
/N
0
value).
Reports current E
b
/N
0
status.
Notes:
1. The 'x' (< or >) parameter is only returned if the E
b
/N
0
has exceeded the computational resolution of the
system.
2. 'No Data' is returned if the E
b
/N
0
cannot be calculated.
3. 'Sampling' is returned if not enough data is currently
available to calculate the E
b
/N
0
.
Receive
Signal Level
Status Command:
Response:
<1/RSL_'cr'
>1/RSL_xsnndBm'cr''lf']
Where:
x = < or > (data modifier to indicate that the receive signal
level is less than or greater than the returned value).
s = + or - (receive signal level sign, ±).
nn = 20 to 90 in dBm (receive signal level magnitude).
Reports the amplitude of the received signal.
Notes:
1. The 'x' (< or >) parameter is only returned if the level
has exceeded the computational resolution of the
system.
2. 'No Data' is returned if the level cannot be calculated.
3. 'Sampling' is returned if not enough data is currently
available to calculate the level.
LNB Current
Monitor
Status Command:
Response:
<1/CMS_'cr'
>1/CMS_nnn'cr''lf']
Where: nnn = 0 to 500, or 'OVR'.
Reports the current draw of the LNB. The system is capable
of accurately measuring current levels up to 500 mA. Levels
above 500 mA will be reported as ‘OVR'.
Current
Sweep Value Command:
Response:
<1/CSV_'cr'
>1/CSV_snnnnnn'cr''lf']
Where:
s = + or - (Sweep offset from center).
nnnnnn = 0 to 500000 Hz.
This command returns the current sweep value.
A–7