Minor Rx Alarms; Drop And Insert Alarms; Common Major Alarms - Radyne DMD50 Installation And Operation Manual

DMD50 Universal Satellite Modem
6.2.1.4

Minor Rx Alarms

Alarm Possible Cause
BUFF UNDERFLOW Indicates that a Doppler Buffer underflow has occurred.
BUFF NEAR EMPTY Indicates that the Doppler Buffer is about to underflow.
BUFF NEAR FULL Indicates that the Doppler Buffer is about to overflow.
BUFF OVERFLOW Indicates that a Doppler Buffer overflow has occurred.
RX DATA ACTIVITY Indicates that there is no Rx Data activity. For the Ethernet Interface, indicates that no
Ethernet port is active (no cable is plugged in).
SAT AIS Indicates that AIS has been detected in the receive satellite data stream.
DnI FRAME LOCK Indicates if drop/insert data is frame locked.
DnI M-FRAME LOCK Indicates if drop/insert data has multiframe lock.
INSERT CRC Indicates if the Circular Redundancy Check is passing in PCM-30C and PCM-31C Modes.
T1/E1 SIGNALING Indicates that the T1/E1 Signal is not locked.
IFEC LOCK Indicates that the Inner Codec is not locked.
OFEC LOCK Indicates that the Reed-Solomon Decoder is not locked.
INTERLEAVER Indicates that the Reed Solomon Interleaver is not synchronized.
EBNO (dB) Indicates that the Eb/No is outside of limits.
IBS BER Indicates that there are more than one in 1000 bits in error in IBS mode.
RX DVB FRAME Indicates that the Rx Satellite Data Stream Framing is not DVB.
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 Possible Cause
TERR FPGA CFG Indicates an Interface Card FPGA configuration failure probably caused by a missing, or
wrong file.
CODEC FPGA CFG Indicates Turbo Codec Card FPGA configuration failure probably caused by a missing, or
wrong file.
+1.5V RX SUPPLY Displays the measured voltage of the 1.5 Volt Rx power bus located inside the modem.
+1.5V TX SUPPLY Displays the measured voltage of the 1.5 Volt Tx power bus located inside the modem.
+3.3V SUPPLY Displays the measured voltage of the +3.3 Volt power bus located inside the modem.
+5V SUPPLY Displays the measured voltage of the +5 Volt power bus located inside the modem.
+12V SUPPLY Displays the measured voltage of the +12 Volt power bus located inside the modem.
+20V SUPPLY Displays the measured voltage of the +20 Volt power bus located inside the modem.
EXT CLOCK ACT Indicates that the External Clock is not active.
EXT REF ACT Indicates no activity on the External Reference.
EXT REF LOCK Indicates that the External Reference PLL is not locked.
MN-DMD50 Revision 4
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.
Maintenance and Troubleshooting
6–3