Comtech EF Data SDR-54A - Manual (Page 71)

SDR-54A Satellite Demodulator Revision 4
Specifications MN/SDR54A.IOM
8.8 Faults Monitored
The faults monitored by the M&C and the resulting action taken are as follows:
FPGA Program FAULT LED TTL-OC FORM-C
DSP Active FAULT LED TTL-OC FORM-C
RF LO Lock Detect FAULT LED TTL-OC FORM-C
BER Threshold FAULT LED TTL-OC FORM-C
Carrier Detect LOCK LED
LNA Power FAULT LED TTL-OC FORM-C
LNB-POWER LED
DMX Module/Lock FAULT LED TTL-OC FORM-C
RS Module/Lock FAULT LED TTL-OC FORM-C
The operator can also read the fault status via the M&C interface.
The TTL open collector fault signal and the Form-C contact closure signals are available
on the Fault connector.
An optional LNB power current monitor is available.
8.9 Fault Status
The operator can read the following Fault Status information via the M&C interface:
SLRC Address (group or local) Remark
Carrier Detect OK/FLT
BER Threshold OK/FLT
RF SYNC Lock Detect OK/FLT
FPGA Load OK/FLT
DSP Comm OK/FLT
LNB Power OK/FLT/OFF
DEMUX OK/FLT/OFF
Reed-Solomon OK/FLT
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