Redback® Proudly Made In Australia
3
4.0 REAR PANEL CONNECTIONS
Fig 2
1
DC Input
Power is supplied to the unit via a 2.1mm (tip to positive) DC socket. The input voltage must be between
12-30V DC.
2
RCA Stereo Line Output
Connect these outputs to the output amplifier. Output level is nominal 500mV but is related to the recorded
level of the MP3.
3
Pluggable 12-30VDC switched output
Connects via Euroblock screw terminals. Please observe correct polarity when connecting.
The switched output terminal is triggered when any message or tone is activated. The output voltage is the
same as the power supplied to the unit. ie if the A 1741 is powered by 12V DC, the switched output voltage
will be 12V DC.
4
Cancel Trigger
The cancel trigger is activated by closing contacts on the rear of the unit whether by a normally open switch
or a timer or controller. The trigger can be set to Momentary or Alternate triggering. See DIP SW settings.
5
Alert and Evac Triggers
The Alert and Evac triggers are activated by closing contacts on the rear of the unit whether by a normally
open switch or a timer or controller. The triggers can be set to Momentary or Alternate triggering. See DIP SW
settings. (Note: These triggers have a common ground).
6
Message 1-8 Triggers
The message triggers are activated by closing contacts on the rear of the unit whether by a normally
open switch or a timer or controller. The triggers can be set to Momentary or Alternate triggering. See DIP SW
settings. (Note: These triggers have a common ground).
7
DIP Switches
These DIP switches are used to:
Set the triggers as either momentary or alternate action. (Refer to Fig 3)
Set the Alert and Evacuation tones to either “ON” or “OFF”. (Refer to Fig 3)
Disable or Enable the front switches for use. (Refer to Fig 3)
Set the delay between the Alert and Evacuation tones. (Refer to Fig 4)
8
Expansion Port
Not currently used.
4
1
2
6
5
3
7
4
L
R
Line Out
12-30V DC
Switched
Out
12-30V DC
IN
1
1 2 3 4 5 6 7 8
2
3
5
6
7
8
Alert
Cancel
DIP Switch Settings
ON
OFF
1
Triggers momentary
Triggers alternate
2
Alert/Evac ON
Not Used
SW
TRIGGER OPERATION & ALERT/EVAC SETTINGS
DIP Switches
Evac
Triggers
Close
Contacts
to
Trigger
5
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
6
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
7
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
8
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Delay
(Sec.)
O
FF
30
60
90
120
150
180
210
240
270
300
330
360
390
420
450
AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.
SW
3
Front switches active
Front switches de-activated
4
Alert/Evac OFF
+ –
+
-
1 2
3
4 5
6
7 8
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Expansion
Port
8
