Cisco ONS 15454 DWDM - Power Monitoring

16-75
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.7.5 AD-4B-xx.x Card
Figure 16-49 AD-4B-xx.x Block Diagram
Figure 16-50 shows the AD-4B-xx.x optical module functional block diagram.
Figure 16-50 AD-4B-xx.x Optical Module Functional Block Diagram
16.7.5.1 Power Monitoring
Physical photodiodes P1 through P11, and virtual photodiode V1 monitor the power for the AD-4B-xx.x
card. The returned power level values are calibrated to the ports as shown in Table 16-46.
Optical
Module
COM RX
COM TX
124075
uP8260
processor
DC/DC
converter
EXP TX
EXP RX
FPGA
For SCL Bus
management
SCL Bus
TCC M
SCL Bus
TCC P
Power supply
Input filters
BAT A&B
Add
Rx
Drop
Tx
Channel 1
Add
Rx
Drop
Tx
Channel 2
Add
Rx
Drop
Tx
Channel 3
Add
Rx
Drop
Tx
Channel 4
Virtual photodiode
COM
RX
TX
B30.3 or B46.1
RX
Control
Control
interface
Physical photodiode
Variable optical attenuator
V
V1
EXP
RX
EXP
TX
COM
TX
TX
B34.2 or B50.1
RX TX
B38.1 or B54.1
RX TX RX
B42.1 or B58.1
98308
P1
P
P2 P3 P4 P9
P10P12P11
P5 P6 P7 P8