User Manual

Exalt Communications, Inc.

Exalt i-Series Installation and Management Guide

5000001 112

2007-06-25

Alarm Connector

The Alarm connector provides two alarm outputs that can be connected to external alarm

collection equipment. The connector also allows connection of up to two external alarm

sources, where the radio will report the status of these connections through the radio

network management. Output alarm connections are ‘Form C’ style connections,

performing alarm logic based on either Normally Opened (NO) or Normally Closed (NC)

connections compared to a Common (C) pin. Input alarm connections can be TTL logic

or NO/NC style relay closures.

Figure 47 Alarm Connector

Alarm Output 1 is in alarm any time that there is a traffic-impacting alarm condition

(Major). Alarm Output 2 is in alarm any time that there is an alarm that is not traffic-

impacting (Minor).

The administrator can set the polarity of the alarm inputs.

Pin Function

1 Alarm Output 1 - NO

2 Alarm Output 1 - NC

3 Ground (for Alarm Inputs)

4 Alarm Output 2 – NO

5 Alarm Output 2 – NC

6 Alarm Output 1 – Common

7 Alarm Input 1

8 Alarm Input 2

9 Alarm Output 2 – Common

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