Jitter problem with APC 40 MK I

Discussion in 'Lasershow Designer BEYOND' started by Mgould, Nov 28, 2016.

  1. Mgould

    Mgould Member

    While dicking around with the last problem, we discovered a new one:

    We had a slight jitter to scanned images. Not related to scan rate or anything we could pin down.
    Except it went away when we disconnected the APC 40.

    Sounds like some problem with the switcher PSU for the APC, but we checked that with a scope and it was clean as a whistle.

    We re-routed cables, plugged into different USB ports, with and without a USB hub, and did everything else we could think of, no joy.

    It is a minor problem that the audience probably wouldn't notice, but we do.

    Anyone else seen this?
    Maybe I have a bum APC 40?

    TIA...Mike
     
  2. Bob@Pangolin

    [email protected] Staff Member

    What kind of PC where you using? Im thinking of usb power management, usb drivers.. uhh Never heard of this issue before. And as far as I know this should not interfere with each other. Uhh a defective slider/button/pot sending gibberish? What does the midi monitor tell you?
     
  3. Mgould

    Mgould Member

    I have an old Asus laptop, running Win 7 Pro.
    How do I invoke the MIDI monitor?

    Thanks...Mike
     

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