GAI-Tronics ACC2500, User And Installation Manual, Page: 21 / 56

ACC2500 Audio Control Center Operation
17 09/08
Stopping the Broadcast of an Alarm
Once an alarm broadcast has been initiated, it may be desirable to stop playback or select another alarm
instead. This can be done in many ways.
To stop the alarm being broadcast, press any of the following buttons:
STOP/CLR
,
ZONE UP
or
DOWN
,
ALARM ON/OFF
,
ALARM UP
or
DOWN
or
DEACT
. Any of these buttons will end broadcast of the
current alarm and return to either zone select or alarm select mode depending on which button is pressed.
Pressing
ZONE UP or DOWN will end the broadcast and return to zone selection. Pressing the ALARM
ON/OFF or ALARM UP or DOWN will end the broadcast and return to alarm selection. Pressing
STOP/CLR
or
DEACT
will end the broadcast and return to the previously selected mode.
STOP/CLR vs. DEACT
While the
STOP/CLR
button and
DEACT
button both will end an alarm broadcast, their purpose and
behavior are different.
Using the
STOP/CLR
button to cease an alarm broadcast simply does that. It leaves the selected field units
active for the duration of the inactivity time. This is similar to the behavior of pressing the ZONE or
ALARM buttons during alarm broadcast. Leaving the selected field units active will allow the selection of a
new alarm without requiring the regeneration of the DTMF sequence to activate the currently active units.
Selecting a different zone will keep the currently active zone and add the newly selected zone to the active
field units. Note that the DTMF sequence of the newly activated zone will be broadcast over the currently
active field units.
Using the DEACT ends an alarm broadcast and generates a DTMF stop sequence to all speakers causing
any active speaker to immediately go inactive. This is useful if the field units are configured to stay active
during the presence of audio: no hard contact closure. In this case, if the operator wishes to generate an
alarm to a different zone and deactivate the current zone without waiting the inactivity time, pressing the
DEACT button will stop all field units from broadcasting. Upon pressing the DEACT button,
“DEACTIVATING ALL” will be displayed on the second line and a DTMF stop sequence will be
generated.
In addition to the above-mentioned differences, the
DEACT
button can be used at any time to deactivate any
field units. If the operator must override any current activity, pressing the
DEACT
button first will ensure
that all speakers are immediately deactivated.