Chapter 1 Module Introduction
12
OL-32414-01
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
Description
1
Dust plug
2
Bale clasp (shown open; push upward to close)
3
Transmit bore (not in use for the receiver)
4
Receive bore (not in use for the transmitter)
