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.
TX
NETWORK
NETWORK
WEST
RX
EAST
1590
RX
TX
Local Interface
O A D M D R O P / P A S S
DROP
Drop and Pass
T
X
R
X
WEST
EAST
Local Interface
