Figure 4-22 Opt-Amp17-C Block Diagram; Opt-Amp-17-C Automatic Power Control - Cisco ONS 15454 DWDM Reference Manual

4.8.3 OPT-AMP-17-C Automatic Power Control

Figure 4-22 OPT-AMP17-C Block Diagram
Line RX
Monitor Line RX
Line TX
Monitor Line TX
For SCL Bu s
management
SCL Bus
TCCi M
Figure 4-23
Figure 4-23
COM RX
COM TX
4.8.3 OPT-AMP-17-C Automatic Power Control
A transient gain range of 20 to 23 dB is available to APC in order to permit other amplifiers to reach
their expected set points. However, operation in this range is not continuous. At startup, the
OPT-AMP-17-C card caps the gain at a maximum of 20 dB.
Cisco ONS 15454 DWDM Reference Manual, R8.5
4-28
Optical
module
FPGA
Processor
SCL Bus
TCCi P
shows how the OPT-AMP-17-C optical module functions.
OPT-AMP-17-C Optical Module Functional Block Diagram
MON TX
P1
in RX
P3
MON RX
P Physical photodiode
Power supply
DC/DC
OSC RX
P2
P5
OSC
LINE TX
add
APR
signal
OSC
LINE RX
drop
OSC
P4
OSC TX
Chapter 4
COM TX
COM RX
OSC TX
OSC RX
Input filters
BAT A&B
Optical Amplifier Cards
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