Instruction manual

DLP-13 Using the Alarm Connections and ACO Button

Introduction

The alarm connections alert the user when a selected alarm condition exists. The alarm may be cleared by

pressing the Alarm Cut-Off (ACO) switch located on the front panel of the ATLAS. This procedure details

the steps which must be performed to use the ATLAS alarm connections and ACO switch.

This procedure should be performed at installation on each ATLAS shelf that is wired out to external office

alarm equipment.

Prerequisite Procedures

Before beginning this procedure, the ATLAS should be mounted in its permanent location and the alarm

contacts should be connected (see DLP-11, Connecting the Alarm Contacts, on page 344).

Tools and Materials Required

• VT100 terminal or PC with VT100 terminal emulation software

To prevent electrical shock, do not install equipment in a wet location or during a

lightning storm.

Electronic modules can be damaged by static electrical discharge. Before handling modules,

wear an antistatic discharge wrist strap to prevent damage to electronic components. Place

modules in antistatic packing material when transporting or storing. When working on

modules, always place them on an approved antistatic mat that is electrically grounded.