Service Manual

GSM-205-323

Cage backplane interface panel harness assembly (CBIA)

31st Oct 01

Technical Description: Horizon

macro

indoor

68P02902W07-B

CONTROLLED INTRODUCTION

Tech. 2–9

CBIA cage

function and

diagram

The main cage holds modules and supports the backplane. Each compartment

has appropriate sliders for insertion of the modules. Figure 2-8 shows the

module compartments of the cage.

CIRCUIT BREAKER MODULE

MAIN CAGE

TRANSCEIVERS (CTUs)

HOLES IN BACK PANEL OF CAGE FOR

BACKPLANE FAN CONNECTORS

FULL SIZE

DIGITAL

MODULES

(MCUFs

AND

ALARM)

HALF SIZE DIGITAL

MODULES (FMUX,

NIUs AND BPSM)

POWER SUPPLY MODULES

(PSMs)

HALF SIZE DIGITAL

MODULES (FMUX,

NIUs AND BPSM)

2-FAN

4-FAN

Figure 2-8 Front view of CBIA cage showing where modules fit

CBIA harness

function

The harness provides cables to link connectors on the backplane with

connectors on the underside of the interface panel.