Operator Action During Alarm

TM 11-5825-270-10

NOTE

The volume of the 3-kHz alarm tone is not affected by the setting of AUDIO LEVEL

control.

2-6. Operator Action During Alarm

Report alarm condition to the site supervisor or designated higher maintenance category personnel. The aural

alarm may be silenced by the operator by pressing the ALARM SIL switch. Note that ALARM SIL switch only

inhibits the aural alarm and the red ALARM lamp remains on as long as alarm condition exists.

2-7. Alarm Test

Check the built-in alarm test function of the monitor receiver as follows:

NOTES

The alarm verifies the operation of the monitoring circuits in the

receiver. This test should be performed daily.

Always coordinate the alarm test operation with the remote monitoring

site personnel so as not to provide a false alarm condition at the remote

site.

a. Press and hold the ALARM TEST switch. Check to see that after expiration of the preset delay, an alarm

condition is produced by the receiver.

b. Press ALARM SIL switch to silence the aural alarm.

c. Release ALARM TEST switch. Check to see that receiver reverts to normal operation. Note that normal

operation will resume immediately if the carrier is modulated. If modulation is not present, the receiver will not

return to normal operation until the first modulation is detected. This is normal..

2-8. Shutdown Procedure

Switch off the receiver by setting the power ON/OFF switch to OFF. When the receiver is

switched off, all front panel lights must be off.

NOTE

When the receiver is switched off, the remote alarm contacts at the rear of the

unit will change state, indicating an alarm condition. Coordinate shutdown

procedure with the remote monitoring activity so as not to produce a false alarm.

2-3