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