8-7
Two Channel Audio Operation
Overview
A Dual Channel Audio System can play one prerecorded message and one live message at the same
time. In other words, a prerecorded message can be playing on Floor 1 while an announcement is
being made on Floor 2.
Figure 8-2. Two Channel Hardware
Evacuate Entire
Building
1. Press the All Speakers Evac button to play the evacuation message on every speaker circuit
connected to the audio system.
2. To indicate that the All Speakers Evac function has been activated, the LED associated with
this button illuminates, as do the LEDs for each of the speaker circuits (floors).
Continued on next page.
FACP MAIN CONTROL PANEL
FIRE ALARM
SILENCED LED
FIRE ALARM
SILENCED KEY
RED FIRE ALARM LED
FIRE ALARM
ACKNOWLEDGE KEY
TALK LED
MIKE TALK SWITCH
IN
CONTROL
ALL
SPEAKERS
EVAC
LOCAL
SPEAKER
EVAC
ALL
SPEAKERS
TALK
LOCAL
SPEAKER
ALERT
8th
Flr.
7th
Flr.
6th
Flr.
5th
Flr.
4th
Flr.
3rd
Flr.
2nd
Flr.
1st
Flr.
OPERATION SELECT
SWITCHES
SPEAKER SELECT
SWITCHES
SPEAKER SELECT
SWITCHES
PHONE SELECT
SWITCHES
SELECTIVE
EVAC
READY
TO
TALK
8th
Flr.
7th
Flr.
6th
Flr.
5th
Flr.
4th
Flr.
3rd
Flr.
2nd
Flr.
1st
Flr.
PHONE
PIEZO
SILENCE
PHONE 1
CIRCUIT
PHONE 2
CIRCUIT
PHONE 3
CIRCUIT
PHONE 4
CIRCUIT
PHONE 5
CIRCUIT3
PHONE 6
CIRCUIT
PHONE 7
CIRCUIT
EVAC CHANNEL TALK CHANNEL
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