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    • Matrix: V-Iris panel Auxiliary power on DB25 audio connector

    Owned by ernie addow
    Last updated: May 10, 2024
    2 min read

    Pin 13 on the V-Iris rear Aux audio connector can provide Auxiliary power with 0.2A re-settable fuse (polyfuse). This can be used to power external Microphones

     

     

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    Two jumper switches on the MAIN board select the power that runs to pin 13 of the audio connector DB25:

     

    J38 - selects either GND or Power to pin 13

    • 1-2 = select power (power is selected by J49)

    • 2-3 = select GND

     

    J49

    • 1-2 = select 5VA power

    • 2-3 = select 12V power

    power via a 0.2A resettable fuse (polyfuse).

     

    the default setting is GND (0v) on pin 13

    Note : units built before April 2024 may have had pin 13 set to +5V at the factory

    if 0v is required use pins 5,6,18,19 instead

    Switch #4 on the main board is to enable or disable headset detect

     

     

    image-20240402-203302.png

     

     

     

     

     

     

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