User guide

10 System Description

Drop/Pass Module

The drop/pass module removes one wavelength-specific channel from the

eastbound fiber and allows the remaining channels to pass straight through to

other nodes along the network. When the drop/pass module drops the channel

from the network, it sends the data to a local interface. The local interface sends

the same channel back to the drop/pass module for transmission in the west-

bound direction, thus completing the point-to-point connection between the local

interface and another device located in the west. That other device may be a

mux/demux, drop/pass, or drop/insert module.

There are 16 drop/pass modules, each set to drop one of the 16 wavelength-

specific channels supported by the Radiance CWDM System. Dropped channels

interface with any Metrobility product that supports CWDM transceivers.

NETWORK

WEST

EAST

1590

Local Interface

OADM DROP/PASS

DROP

Drop and Pass

WEST EAST

Local Interface