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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 5 Multiplexer and Demultiplexer Cards
5.4 32DMX-O Card
The 32-Channel Demultiplexer (32DMX-O) card demultiplexes 32 100-GHz-spaced channels identified
in the channel plan. The 32DMX-O takes up two slots in an ONS 15454 and can be installed in
Slots 1 to 5 and 12 to 16.
The 32DMX-O features include:
• AWG that enables channel demultiplexing functions.
• Each single-channel port is equipped with VOAs for automatic optical power regulation after
demultiplexing. In the case of electrical power failure, the VOA is set to its maximum attenuation
for safety purposes. A manual VOA setting is also available.
• The 32DXM-O has four physical receive connectors that accept MPO cables on its front panel for
the client input interfaces. MPO cables break out into eight separate cables.
Note In contrast, the single-slot 32DMX card does not have VOAs on each drop port for optical power
regulation. The 32DMX optical demultiplexer module is used in conjunction with the 32WSS
card in ONS 15454 Multiservice Transport Platform (MSTP) nodes.
• Each single-channel port is monitored using a photodiode to enable automatic power regulation.
Figure 5-14 shows the 32DMX-O card faceplate.
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