Redback A 1720C Operating Manual

The A 1720C is an MP3 based message player and tone generator designed for public address, security, customer direction
or emergency evacuation announcements.
1.0 Installation
Power requirements: The A 1720C needs a minimum of 12VDC at 300mA to work correctly (Note: a minimum of 24V
DC is needed if the switched output is required). Do not exceed the maximum working voltage of 30VDC, as it will cause
permanent damage to the unit. A good working voltage is between 12 and 24VDC. The power is connected via 2 way screw
terminal (see fig 1).
Output: Stereo output is via screw terminals and RCA sockets. Output level is nominal 500mV but is related to the recorded
level of the MP3.
Input triggers: The input triggers are activated by closing contacts whether by a normally open switch or a timer or
controller.
Switched output: The switched output terminal is triggered when any zone is activated. Note: A minimum of 24VDC must
be used to power the A 1720C for the switched output to operate. The voltage output from the switched output terminals
is the same as the power supplied to the unit.
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www.redbackaudio.com.au
Redback® A 1720C MP3 Tone Generator
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Fig 1
Operating Manual
Connections
1. Stereo audio output
2. Left & right RCA outputs
3. Switched power output
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4. Trigger 1-8 inputs
5. Evac Trigger
6. Alert Trigger
10 7. Cancel Trigger
8. Micro SD Card slot
9. DIP switch
10. BCD switch
11. Power input (12- 30V)
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User manual revision number: 1.0
Redback® Proudly Made In Australia
29/11/2023
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