Back Panel Connectors; About The Opm - Cisco Prisma II EDR Installation Manual

Chapter 1 Module Introduction

Back Panel Connectors

Blind-mate connectors make it easy to install this module. The push-on connector on
the back of the module mates with the back plane bus connector inside the chassis.
This 55-pin connector and the two RF connectors provide the following facilities.
RF signal connections

Electrical power input connection

Alarm communications connections

Status-monitoring communications

Communications and control connections

The ESD guide pin near the bottom of the back panel serves as both a guide pin and
an ESD ground connection. The length of the pin ensures that ground is the first
electrical connection made as the module is inserted, and the last connection to be
broken as the module is removed.

About the OPM

The EDR system makes use of OPM devices at both ends of the reverse path from
node to headend or hub. The following illustration identifies the main components
of the OPM.
Item
1
2
3
4
12
Description
Dust plug
Bale clasp (shown open; push upward to close)
Transmit bore (not in use for the receiver)
Receive bore (not in use for the transmitter)
OL-32414-01