Audible Indicator

Basic Operation

The audible indicator has three distinct sounds associated with the three levels of alarming. This indicator is controlled by software through the alarm control module or by a disable switch on the alarm indicator panel itself. The audible indicator will sound at the level of the most severe alarmed event that is currently active. No more than one level of audible alarm can be enabled at any one time. The disable switch turns off the current audible alarm until a new event occurs that is of equal or greater severity level than the highest level alarm currently active, or until the event causing the audible alarm is cleared and another alarmed event is pending.

The three audible alarm levels are defined as follows:

∙Critical is two beeps, the first separated from the second by 0.5 seconds or less. This double beep pattern is repeated every 1.5 seconds.

∙Major is one beep every 1.5 seconds.

∙Minor is one beep every 5 seconds.

Battery Backup Logic

The battery backup logic is designed to keep the current indicator status functioning for the life of the batteries (approximately 60 to 120 minutes) in the event of a power failure. It provides an indication if the batteries are low by displaying a “b” in the status display.

Keep-Alive Function

The alarm indicator panel houses a timer that is used to ensure that the CPU controlling it is still running. The function is enabled by software, which starts a timer. As long as software resets the timer before expiration, a “rotating bar” is displayed in the status display, otherwise a minor alarm is generated. A minor alarm will also be generated if power to the alarm indicator panel is lost and a “p” will be displayed in the status display.

3.3.1.1 Replacing Batteries in the Alarm Indicator Panel

The alarm indicator panel contains seven 1.2 V, 600 mA, NICD type AA rechargeable batteries that provide battery backup for providing alarm information when the system loses power or is turned off. When an alarm indicator panel continuously indicates a low battery condition in the absence of a power loss, the batteries should be replaced. These batteries should be replaced only with the same type batteries (PN 12-41230-04) or the equivalent batteries.

______________________________ Note ___________________________

Compaq recommends that batteries be replaced every two to two and a half years as preventative maintenance.

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Perform the following procedure to replace the batteries in an alarm indicator panel:

1.Power down the AlphaServer 1000A system.

2.At the front of the cabinet, remove the four screws that secure the alarm indicator panel frame to the front rails.

3.Disconnect the miniature 26-pin cable(s) from the connector(s) on the rear of the alarm indicator panel(s).

4.On the rear of the alarm indicator panel that indicates a low battery condition, remove the two screws that secure the miniature 26-pin connector to the rear cover.

3–4AlphaServer Intelligent Peripheral Platform Hardware Owner's Guide

EK-ASIP2-OG. D01 specifications

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