User Manual

Module Front Panel LED Indicators and Connectors – continued
6-28 1X SC4812T–MC BTS Optimization/ATP 5/21/04
DRAFT
Figure 6-3: CSM Front Panel Indicators & Monitor Ports
PWR/ALM
Indicator
FREQ
MONITOR
SYNC
MONITOR
FW00303
PWR/ALM LED
After the memory tests, the CSM loads OOS–RAM code from the Flash
EPROM, if available. If not available, the OOS–ROM code is loaded
from the Flash EPROM.
S Solid GREEN – module is INS_ACT or INS_STBY no alarm.
S Solid RED – Initial power up or module is operating in a fault (alarm)
condition.
S Slowly Flashing GREEN – OOS_ROM no alarm.
S Long RED/Short GREEN – OOS_ROM alarm.
S Rapidly Flashing GREEN – OOS_RAM no alarm or INS_ACT in
DUMB mode.
S Short RED/Short GREEN – OOS_RAM alarm.
S Long GREEN/Short RED – INS_ACT or INS_STBY alarm.
S Off – no DC power or on-board fuse is open.
S Solid YELLOW – After a reset, the CSMs begin to boot. During
SRAM test and Flash EPROM code check, the LED is yellow. (If
SRAM or Flash EPROM fail, the LED changes to a solid RED and
the CSM attempts to reboot.)
FREQ Monitor Connector
A test port provided at the CSM front panel via a BNC receptacle allows
monitoring of the 19.6608 MHz clock generated by the CSM. When
both CSM 1 and CSM 2 are in an in-service (INS) condition, the CSM 2
clock signal frequency is the same as that output by CSM 1.
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