Service Manual

GSM-204-323

Alarm module

31st Oct 01

Technical Description: Horizon

macro

outdoor

68P02902W02-A

CONTROLLED INTRODUCTION

Tech. 6–25

Alarm module

overview

The alarm module is located in the digital module shelf, adjacent to the MCUFs.

It provides the cabinet equipment with an external alarm system to report

operational status. The alarm module:

 Collects all cabinet alarms (received from the backplane).

 Provides current sensing for 16 customer inputs, referred to as site

alarms. These inputs are provided by the PIX connectors PIX0 and PIX1.

 Controls up to four relay driven outputs linked to customer equipment

(changeover contacts 30 V, 1 A maximum). These outputs are provided by

the PIX0 connector.

 Transmits alarm information to all CTUs in the same cabinet.

Alarm module

view

Figure 6-10 shows an alarm module.

BACKPLANE

CONNECTOR

5 LED PAIRS

Figure 6-10 Alarm module view