Circuit Pack Descriptions
Issue 8.0 July 2002
7-113
Performance Monitoring 7
The OC48 REGENR circuit pack provides performance-monitoring circuitry for the
following performance parameters:
■ Received optical power
■ Errored frames
■ Section (B1) errors
■ Laser bias current
■ Optical transmit power.
When an incoming high speed defect or internal fault is detected, the OC48
REGENR circuit pack inserts a line AIS in the outgoing OC-48 high speed signal.
Power Circuitry 7
The OC48 REGENR circuit pack receives two sources of −48 volts that are diode
OR'd, fused, and filtered. Modular DC-to-DC power converters produce +1.8, +5,
+12, +15, −2, and −5.2 volts used on the circuit pack.
The OC48 REGENR circuit pack monitors the two −48 volt sources to the circuit
pack and any failures are reported to the board controller. If the OC48 REGENR
circuit pack detects a failure of the onboard fuse or power converter, the red
FAULT LED will light. If the fuse or +5 volt power converter fails, the SYSCTL
circuit pack provides +5 volts to light the FAULT LED on the OC48 REGENR
circuit pack.
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