Redback A 1720B Operating Manual

The A 1720B is an MP3 based message player and tone generator designed for public address, security, customer direction
or emergency evacuation announcements.
Installation
Power requirements: The A 1720B needs a minimum of 12VDC at 300mA to work correctly. The maximum working
voltage is 30VDC, do not exceed 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 terminal block (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. The voltage is the same as the
power supplied to the unit. ie if the A 1720B is powered by 12V the switched output voltage will be 12V.
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1
2
3
Connections
1. Stereo audio output
2. Left & right RCA outputs
3. Switched power output
4. Trigger 1-8 inputs
www.altronics.com.au
Redback® A 1720B MP3 Tone Generator
4
5. Evac Trigger
6. Alert Trigger
7. Cancel Trigger
8. Micro SD Card slot
Operating Manual
9
5 7
6
9. DIP switch
10. BCD switch
11. Power input (12-24VDC)
User manual revision number: 2.1
Redback® Proudly Made In Australia
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10
Fig 1
16/03/2023
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