Power Monitoring - Cisco ONS 15454 DWDM Installation And Operation Manual

16.4.1 OSCM Card
Figure 16-10
OSC Line
Figure 16-11
Figure 16-11
OSC TX

16.4.1.1 Power Monitoring

Physical photodiode P1 monitors the power for the OSCM card. The returned power level value is
calibrated to the OSC TX port
Table 16-16
Photodiode
P1
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
16-28
OSCM Block Diagram
OC-3 OC-12
OC3-ULR
Optical ASIC
VOA transceiver
TOH &
Cell Bus
M P
SCL Bus
to TCCs
shows the block diagram of the variable optical attenuator (VOA) within the OSCM.
OSCM VOA Optical Module Functional Block Diagram
P1
Control
Module
Physical photodiode
P1
OSC Variable optical attenuator
(Table
OSCM VOA Port Calibration
CTC Type Name
Output OSC
OC-3
FPGA POS
Processor
19.44 MHz
Line Ref clock
DC/DC
6 6
MT CLKt MT CLKt
0 Slot 0 Slot
1-6 12-17
OSC RX
Control
Interface
16-16).
Calibrated to Port
OSC TX
Chapter 16
MII
FE User
Physical
FE
Data
Interface
Channel
Power supply
Input filters
BAT A&B
Card Reference
April 2006