Redback A1740 MP3 Tone Generator & Message Player
The A 1740 is an MP3 based message player and tone generator designed for public address, security, customer direction or emergency evacuation announcements.
Play modes :
Alternate: When the A 1740 is in Alternate mode (DIP1 switch1 OFF) 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 (DIP1 switch1 ON) a momentary closing contact or pulse on the trigger pins will activate the MP3. The A 1740 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 is used. A momentary closing contact on the Cancel trigger will stop the MP3 playing (it is recommended that the Cancel contact be held up to 2 seconds to ensure the MP3 stops playing).
Power requirements: The A 1740 needs a minimum of 8VDC at 300mA to work correctly. 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 the 2.1mm (tip positive) DC socket on the rear of the unit.
Output: Output is via the stereo RCA connectors on the rear. 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 1740 is powered by 12V the switched output voltage will be 12V.