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Redback® A 1741C Message Player
5.0 DIP SWITCH SETTINGS
(DIP SW 1) Momentary or Alternate triggering
Alternate: When the A 1741C is in Alternate mode (DIP switch1 ON) 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 continue to loop over and over until the contact is released.
Momentary: In Momentary mode (DIP switch1 OFF) a momentary closing contact or pulse on the trigger pins will
activate the MP3. The A 1741C will continue to play the MP3 till it finishes and will stop playing and wait for another
trigger activation.
To stop an MP3 playing when in Momentary mode the Cancel trigger or Cancel switch is used. A momentary closing
contact on the Cancel trigger or closure of the Cancel switch will stop the MP3 playing (it is recommended that the
Cancel contact or switch be held up to 2 seconds to ensure the MP3 stops playing).
(DIP SW 2) Alert/Evacuation Tones ON or OFF
When switch 2 is set to "OFF" the Alert and Evac tones cannot be triggered either by the front switches or the rear
terminal contacts. If switch 2 is set to "ON" the Alert and Evac tones can always be triggered via the rear terminal con-
tacts. However the front switch triggering is dictated by DIP Switch 3.
(DIP SW 3) Front Switch Activation
When switch 3 is set to "OFF" the front switches become de-activated from use. When these switches are de-activated
the "Switches Disabled" LED on the front of the unit will illuminate. This function disables all the switches including the
cancel, alert and evac.
(DIP SW 4)
Not currently used
(DIP SW 5-8) Alert/Evacuation Tones change over option
The Alert and evacuation tones conform to Australian Standards AS1670.4 and are used to notify building occupants of
an emergency situation.
The Alert tone comes with a change over option which forces the A 1741C to switch from the Alert to the Evacuation
tone after a prescribed time. DIP switches 5-8 set these change over times from 30 seconds to 450 seconds in 30 second
intervals. If all DIP switches are set to "OFF" the changeover is disabled.
4
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TRIGGER OPERATION & ALERT/EVAC SETTINGS
SW
1
2
3
4
SW
AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.
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.)
ON
Triggers alternate
Triggers momentary
Alert/Evac ON
Front switches active
Front switches de-activated
Not Used
Fig 3
Fig 4
www.redbackaudio.com.au
OFF
Alert/Evac OFF
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