If your CO Power Unit has a single power
module, you do not need to set the option straps.
The option straps are factory set for the Basic
mode of operation. However, you should compare
the option strap setting on backplane to the strap
settings listed in

Table 2-2

in the

Setting the

Option Straps

section to ensure correct settings.

2. Install the CO Power Unit into the carrier. (See the

Installing the CO Power Unit

section.)

3. Provide power to the CO Power Unit. (See the

Providing Power to a CO Power Unit

section.)

4. Install the Shared Diagnostic Control Panel

(SDCP) on the carrier in which you installed the
CO Power Unit, if desired. (See the

Installing an

SDCP

section.)

5. Connect the alarm contacts for the CO Power Unit

to a CO alarm system and/or a Modular 3611
DSU, if desired. (See the

Connecting the Alarm

Contacts to a CO Alarm System

section or the

Connecting the Alarm Contacts to a 6800 Series
NMS Via a Modular 3611 DSU

section.)

Steps 4 and 5 are optional.

Installing the Optional Second Power
Module

You can order a second power module for your CO

Power Unit. This additional power module allows you to
choose between two modes of operation: Redundant or
Independent. You must install the optional second power
module into the CO power tray before installing the CO
Power Unit into the carrier.

To install the optional second power module:

Procedure

1. Remove the coverplate by loosening the two

captive screws on the bottom of the coverplate.

2. Place the second power module in the card guides

on the right side of the CO power tray (as viewed
from the front of the tray) and then slide power
module to the rear of tray. See

Figure 2-1

3. Tighten the two captive screws on the bottom of

the power module’s faceplate.