Cisco Prisma II bdr Dig Rev 2 1 Dual Mux Sys for High Density Installations Guía De Instalación

Reverse Balancing the Node with the Enhanced Digital Reverse Modules 78-741939-01 Rev C

3-6

Port Combination Options,

Continued

Factory Default Port Combination in the Model 6944 Optical Node

This table gives the factory default cable color coding scheme used to differentiate

the cables for the four RF connectors in the Model 6944 Optical Node.

Port Identifier on

the Node

Cable Color Code

Connection on the 2:1 Enhanced

Multiplexing Digital Module

Port 1

Blue

Top

Port 3

White

Second to top

Port 4

Black

Second to bottom

Port 6

Green

Bottom

Notes:

•

If the above color code recommendation is followed, then the black and green

cables connect to ports 4 and 6 whose reverse paths are combined. The blue and

white cables connect to ports 1 and 3 whose reverse paths are combined.

•

The opposite end of the colored coax cables should be connected to the node

ports whose reverse paths are to be combined.

•

Internally, the signals of the two lower RF input connections are combined to

provide a single RF signal. Similarly, the signals of the two top RF input

connections of the 2:1 enhanced multiplexing digital module are combined and

further coupled with the Status Monitoring Input signal to provide a second RF

signal. Refer to the Block Diagram of the 2:1 Enhanced Multiplexing Digital

Module in Chapter 1.

Port Combination Option in the Model 6944 Optical Node

In order to better balance the reverse path signals, the ports can be connected

differently than shown in the table above. The following table gives an example of

connecting the ports differently.