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Galaxy GHDX-2422S-8+12F4D Installation and Hardware Reference Manual

Audible Alarm

3-10

3.3 Audible Alarm

Different subsystem environmental and operational parameters (such as temperature, etc.)

have been assigned a range of values between which they can fluctuate. If either the

upper or lower thresholds are exceeded, an audible alarm will automatically be triggered.

The alarm will also be triggered when an active component of the subsystem fails. If the

subsystem manager is onsite and is alerted by the alarm, the manager needs to read the

error message on the LCD screen or on the PC terminal to determine what has triggered

the alarm. After determining what has occurred, the subsystem manager must take

appropriate actions to rectify the problem.

WARNING!

Whenever an alarm is triggered, you must determine the problem. If the audible alarm

is ignored or not taken seriously and the problem is not rectified, permanent damage

to the system can result.

3.3.1 Default Threshold Values

Table 3-10 shows the default threshold values for the subsystem. If any of these values

are surpassed, the alarm will sound:

Parameter Upper Threshold Lower Threshold

Enclosure Ambient

Temperature

40ºC 0ºC

+3.3V

+3.6V +2.9V

+5V

+5.5V +4.5V

+12V

+13.2V +10.8V

CPU Temperature

90ºC 5ºC

Board Temperature

90ºC 5ºC

Table 3-10: Default Threshold Values

The thresholds in Table 3-10 are the default threshold values. Except the “Enclosure

Ambient Temperature,” the user can change the rest of the values. To see how to change

these values, please refer to the Generic Operation Manual that came with your system.

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Rorke Data The Galaxy 65 Especificaciones Pagina 54