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Redback® A 1720B MP3 Tone Generator
Play modes
Alternate: When the A 1720B is in Alternate mode (DIP switch 1 OFF) (see Fig 1) a momentary closing contact or pulse on
the trigger pins will activate the MP3. The A 1720B will continue to play the MP3 until it finishes and will stop playing. If
the contact is held closed continually the MP3 will continue to loop over and over until the contact is released.
To stop an MP3 playing when in Alternate mode the Cancel trigger is used. A momentary closing contact on the Cancel
trigger will stop the MP3 playing (It is recommended that the Cancel contact be held for up to 2 seconds to ensure the
MP3 stops playing).
Momentary: In momentary mode (DIP switch 1 ON) (see Fig 1) the closing contact must be held for the duration of the
MP3 play time, if it is released before the MP3 ends the MP3 will stop playing immediately. If the contact is held closed
continually the MP3 will still only play once and then stop.
Putting MP3's on to the player
You will first need to remove power from the A 1720B, then remove the Micro SD Card from the end of the A 1720B. To
remove the Micro SD Card push the card in and it will eject itself.
The Micro SD Card will then need to be connected to a Windows based PC. You will need a PC equipped with a Micro SD
slot or use a Micro SD Card reader to do this (not supplied).
Step by step guide to put a MP3 into Trigger1 with a Windows PC
Step 1: Make sure the PC is on and card
reader connected and correctly installed. Then
insert the Micro SD Card into the reader.
Step 2: Go to "My Computer" (figure 2)
and open the Micro SD Card which is usually
marked "Removable disk". In this case it is
named "Removable disk (G).
Please note: that the ALERT and EVAC folders
and the MP3 files inside these folders should
not be deleted or renamed in anyway this will
cause the A 1720B to stop responding.
Fig 2
Step 3:
Open Removable Disk
You should get a window that looks like
figure 3.
A library of MP3 tones are supplied in the
folder labelled #LIBRARY#. The other folders
contaon the MP3 fileto be playedm when the
associated trigger is actovated.
Fig 3
2
Redback® Proudly Made In Australia
www.altronics.com.au
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