Brooks BOWS020W, Operation & Technical Manual

Page: 11 / 33

OWS Standalone Manual
MA380 - Rev. 2.4
10
Table 3 Tones and messages specifications
Audio
Indication
Active conditions Description
Evacuation
T3 tone &
message
Alarm condition or
manual activation via
the front display
Sweeping from 500-1200Hz with the ON/OFF time of 0.5s, repeated for 3
times followed by an additional 1 second silence. This is repeated 4 times then
followed by the following voice message:
“Attention, attention, fire alarm evacuate now”
When the voice message is completed, the tone repeats again.
AS2220
Evacuation
tone &
message
Alarm condition or
manual activation via
the front display
Sweeping from 500-1200Hz with the ON 3.75S and OFF 0.25S, followed by
the following evacuation voice message:
“Attention, attention, fire alarm evacuate now”
When the voice message is completed, the tone repeats again.
Alert tone &
message
Alarm condition (for
the duration of delay
time) or manual
activation via the
front display
Repeat the tone below for twelve times.
Continuous tone at 420Hz with the ON/OFF time of 0.6s, repeated for three
times followed by the following voice message:
“Attention, attention, a fire alarm has been detected within the building.
Standby for further instructions”.
When the voice message is completed, the tone repeats again. If 3 minutes
delay is selected, the alert tone will automatically change to the evacuation
tone.
Figure 4 OWS Main Control Board C/W 120W Amplifier mounted
3.3.2 Cables Terminations
Table 4 Connections of the OWS Main Control Board
Designator Type No. Label Pin Description
TB1
Screw
terminals
1
AUX
+
Auxiliary audio input.
<= 1V RMS
2 -
3
AUX EN
+
Auxiliary audio enable input. Closed contact
enables the input e.g. remote mic.
4 -
5
MIC
+
Microphone input from the built-in electret
microphone.
6 -
7
MIC EN
+
Used only to enable optional dynamic mic (if used).
Leave it unconnected.
8 -
9 AUDIO OUT + Audio output to amplifier <= 1V RMS.