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OM20 Universal Outdoor Modem
Maintenance and Troubleshooting
MN-OM20– Revision 5
7–5
7.2.1.5
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.
7.2.1.6
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.
7.2.2
Alarm Masks
The OM20 performs a high degree of self-monitoring and fault isolation. The alarms for these
faults are separated into the following three categories:
Active Alarms
Common Equipment Alarms
Backward Alarms
Summary of Contents for OM20
Page 2: ......
Page 4: ...This page is intentionally blank ...
Page 20: ...OM20 Universal Outdoor Modem Introduction MN OM20 Revision 5 1 4 Notes ...
Page 32: ...OM20 Universal Outdoor Modem Installation MN OM20 Revision 5 2 12 Notes ...
Page 38: ...OM20 Universal Outdoor Modem OM20 Initial Configuration MN OM20 Revision 5 3 6 Notes ...
Page 66: ...OM20 Universal Outdoor Modem OM20 Theory of Operation MN OM20 Revision 5 4 28 Notes ...
Page 138: ...OM20 Universal Outdoor Modem Web Browser Remote Protocol MN OM20 Revision 5 6 64 ...
Page 164: ...OM20 Universal Outdoor Modem Technical Specifications MN OM20 Revision 5 8 20 Notes ...
Page 198: ...OM20 Universal Outdoor Modem Appendix E MN OM20 Revision 5 E 16 Notes ...
Page 204: ...OM20 Universal Outdoor Modem Appendix F MN OM20 Revision 5 F 6 Notes ...
Page 214: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 G 10 Notes ...
Page 218: ...OM20 Universal Outdoor Modem Appendix G MN OM20 Revision 5 H 4 Notes ...
Page 220: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX ...