Drop And Insert Alarms; Common Major Alarms - Comtech EF Data DMD50 Installation And Operation Manual

DMD50 Univeral Satellite Modem
Alarm
DnI FRAME LOCK
DnI M-FRAME
LOCK
INSERT CRC
T1/E1 SIGNALING
IFEC LOCK
OFEC LOCK
INTERLEAVER
EBNO (dB)
IBS BER
RX DVB FRAME
LOCK
6.2.1.5

Drop and Insert Alarms

Alarm
Multiframe Lock
CRC Lock
T1 Signaling
E1 FAS (E1 Frame Acquisition
Sync)
E1 MFAS (E1 Multi-Frame
Acquisition Sync)
6.2.1.6

Common Major Alarms

Alarm
TERR FPGA CFG
CODEC FPGA CFG
+1.5V RX SUPPLY
+1.5V TX SUPPLY
+3.3V SUPPLY
+5V SUPPLY
+12V SUPPLY
MN-DMD50– Revision 3
Possible Cause
Indicates if drop/insert data is frame locked.
Indicates if drop/insert data has multiframe lock.
Indicates if the Circular Redundancy Check is passing in PCM-30C and PCM-
31C Modes.
Indicates that the T1/E1 Signal is not locked.
Indicates that the Inner Codec is not locked.
Indicates that the Reed-Solomon Decoder is not locked.
Indicates that the Reed Solomon Interleaver is not synchronized.
Indicates that the Eb/No is outside of limits.
Indicates that there are more than one in 1000 bits in error in IBS mode.
Indicates that the Rx Satellite Data Stream Framing is not DVB.
Possible Cause
The insert framer is not in sync.
An Insert CRC Fault occurred. Valid in T1-ESF, PCM-30, or
PCM-30C Modes.
An Insert T1 Yellow Fault occurred. Valid in T1-ESF, T1D4, or
SCL-96 Modes.
An E1 FAS Fault occurred. Valid in PCM-30, or PCM-30C,
PCM-31, or PCM-31C Modes.
An E1 MFAS Fault occurred. Valid in PCM-30, or PCM-30C,
PCM-31, or PCM-31C Modes.
Possible Cause
Indicates an Interface Card FPGA configuration failure probably caused by a
missing, or wrong file.
Indicates Turbo Codec Card FPGA configuration failure probably caused by a
missing, or wrong file.
Displays the measured voltage of the 1.5 Volt Rx power bus located inside the
modem.
Displays the measured voltage of the 1.5 Volt Tx power bus located inside the
modem.
Displays the measured voltage of the +3.3 Volt power bus located inside the
modem.
Displays the measured voltage of the +5 Volt power bus located inside the
modem.
Displays the measured voltage of the +12 Volt power bus located inside the
modem.
Maintenance and Troubleshooting
6–4