Table of Contents
Advertisement
4.0 REAR PANEL CONNECTIONS
12-30V DC
IN
L
R
Line Out
-
+
1
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 1741C 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.
www.redbackaudio.com.au
12-30V DC
TRIGGER OPERATION & ALERT/EVAC SETTINGS
SW
ON
OFF
Switched
1
Triggers alternate
Triggers momentary
Out
2
Alert/Evac ON
Alert/Evac OFF
3
Front switches active
Front switches de-activated
4
Not Used
Triggers
Alert
Evac
Cancel
Close
Contacts
to
–
Trigger
5
4
3
Redback® A 1741C Message Player
DIP Switch Settings
SW
AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.
5
0
1
0
1
0
1
0
1
0
1
6
0
0
1
1
0
0
1
1
0
0
7
0
0
0
0
1
1
1
1
0
0
8
0 0
0
0
0
0
0
0
1
1
Delay
(Sec.)
8
7
6
5
4
3
2
6
Fig 2
Redback® Proudly Made In Australia
0
1
0
1
0
1
1 1
0
0
1
1
0
0
1
1
1
1
Expansion
1
1
1
1 1
1
Port
1
DIP Switches
1
2
3
4
5
6
7
8
1 2 3 4 5 6 7 8
7
8
3
Advertisement
Table of Contents
