16-37
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.5.1 OPT-PRE Amplifier
Figure 16-16
OPT-PRE Block Diagram
shows the OPT-PRE optical module functional block diagram.
Figure 16-17
OPT-PRE Optical Module Functional Block Diagram
16.5.1.1 Power Monitoring
Physical photodiodes P1, P2, P3, and P4 monitor the power for the OPT-PRE card. The returned power
level values are calibrated to the ports as shown in
.
Optical
module
COM RX
DC RX
96478
Processor
DC TX
COM TX
MON
FPGA
For SCL Bus
management
SCL Bus
TCCi M
SCL Bus
TCCi P
DC/DC
Power supply
Input filters
BAT A&B
98298
DCU
COM RX
COM TX
DC RX
DC TX
MON
P1
P2
P3
P4
P
Physical photodiode
Variable optical attenuator
Table 16-20
OPT-PRE Port Calibration
Photodiode
CTC Type Name
Calibrated to Port
P1
Input Com
COM RX
P2
Output DC
DC TX
P3
Input DC
DC RX
P4
Output COM (Total Output)
COM TX
Output COM (Signal Output)
Summary of Contents for ONS 15454 DWDM
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