4Md-Xx.x Card; Key Features; Faceplate; Table 14-31 4Md-Xx.x Channel Sets - Cisco ONS 15454 DWDM Installation And Operation Manual

Chapter 14 Card Reference

14.6.4 4MD-xx.x Card

The 4-Channel Multiplexer/Demultiplexer (4MD-xx.x) card multiplexes and demultiplexes four
100-GHz-spaced channels identified in the channel plan. The 4MD-xx.x card is designed to be used with
band OADMs (both AD-1B-xx.x and AD-4B-xx.x).
The card is bidirectional. The demultiplexer and multiplexer functions are implemented in two different
sections of the same card. In this way, the same card can manage signals flowing in opposite directions.
There are eight versions of this card that correspond with the eight sub-bands specified in
The 4MD-xx.x can be installed in Slots 1 to 6 and 12 to 17.

14.6.4.1 Key Features

The 4MD-xx.x has the following features implemented inside a plug-in optical module:
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Table 14-31

Table 14-31 4MD-xx.x Channel Sets

Band ID
Band 30.3 (A)
Band 34.2 (B)
Band 38.1 (C)
Band 42.1 (D)
Band 46.1 (E)
Band 50.1 (F)
Band 54.1 (G)
Band 58.1 (H)

14.6.4.2 Faceplate

Figure 14-29
December 2004
Passive cascade of interferential filters perform the channel multiplex/demultiplex function.
Software controlled VOAs at every port of the multiplex section to regulate the optical power of
each multiplexed channel.
Software monitored photodiodes at the input and output multiplexer and demultiplexer ports for
power control and safety purposes.
Software-monitored "virtual photodiodes" at the common DWDM output and input ports. A "virtual
photodiode" is a firmware calculation of the optical power at that port. This calculation is based on
the single channel photodiode reading and insertion losses of the appropriated paths.
shows the band IDs and the add/drop channel IDs for the 4MD-xx.x card.
Add/Drop Channel IDs
30.3, 31.2, 31.9, 32.6
34.2, 35.0, 35.8, 36.6
38.1, 38.9, 39.7, 40.5
42.1, 42.9, 43.7, 44.5
46.1, 46.9, 47.7, 48.5
50.1, 50.9, 51.7, 52.5
54.1, 54.9, 55.7, 56.5
58.1, 58.9, 59.7, 60.6
shows the 4MD-xx.x faceplate.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
14.6.4 4MD-xx.x Card
Table 14-31.
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