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:
â– Received optical power
â– Errored frames
â– Section (B1) errors
â– Laser bias current
â– 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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