Operating instructions

DMD50 Universal Satellite Modem Maintenance and Troubleshooting
TM118 – Rev. 1.1 6-5
6.1.1.5 Drop and Insert Alarms
Alarm Possible Cause
Multiframe Lock The insert framer is not in sync.
CRC Lock An Insert CRC Fault occurred. Valid in T1-ESF, PCM-30, or PCM-
30C Modes.
T1 Signaling An Insert T1 Yellow Fault occurred. Valid in T1-ESF, T1D4, or SCL-
96 Modes.
E1 FAS (E1 Frame
Acquisition Sync)
An E1 FAS Fault occurred. Valid in PCM-30, or PCM-30C, PCM-31,
or PCM-31C Modes.
E1 MFAS (E1 Multi-Frame
Acquisition Sync)
An E1 MFAS Fault occurred. Valid in PCM-30, or PCM-30C, PCM-
31, or PCM-31C Modes.
6.1.1.6 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.