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  1. #1
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    OC PnP EFIS unit disconnects from PC often

    Hi everyone,

    Any ideas why my OC PnP USB EFIS unit occasionally disconnects from the PC. I have an OC MCP, ATC, EFIS, and Jetmax radio and the only unit that does this is the EFIS panel.

    1. This is what I have tried, I have selected high performance for my PC to include disabling USB suspend. Didn't work.
    2. Went into device manager in Windows 10 and under all of the USB root hubs I deselected "allow this computer to turn off this device to save power". It didn't work.

    Any ideas?

    Thanks,

    George

  2. #2
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    Re: OC PnP EFIS unit disconnects from PC often

    George,
    Are you using a hub to connect all your modules. If so make sure there is enough
    power run all modules.
    If not then you may need to get a hub and one with enough power to run all
    modules.
    Les

  3. #3
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    Re: OC PnP EFIS unit disconnects from PC often

    Hi Les,

    I have everything connected to a Tripp Lite USB 2.0 hub. I have a 5v 2.6 amp adapter, but just replaced it with a Mean Well 3 amp adapter to see if it fixes the issue.

    Thanks,

    George

  4. #4
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    Re: OC PnP EFIS unit disconnects from PC often

    George,
    Here is what i use, has many translators as against the cheaper ones.
    Good reliable industrial type. I use two of these as i found the cheaper versions of hubs tendered to hiccup when loaded.
    This is what i found to be the fix for my int usb disconnects.
    http://www.usbfirewire.com/parts/rr-usb2-hub7.html

    Regards
    Les

  5. #5
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    Re: OC PnP EFIS unit disconnects from PC often

    Hi Les,

    Looks like I have a similar hub, https://www.tripplite.com/rugged-ind...rt~U223007IND/

    What I like about the one you sent me is that it brings an adapter. I had to supply (no pun intended) the adapter with the tripp lite. Luckily I found a Mean Well 3.0 amp 5v adapter with the correct plug on eBay for $10. I checked with a volt meter and it came with with 5.13v.

    Just flew a flight with it and the EFIS unit didn't disconnect. Hopefully it won't disconnect again as I do have 7 items plugged into it.

    Thanks,

    George

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    Re: OC PnP EFIS unit disconnects from PC often

    George,
    Hope yours works out as well as mine. My uusb modules started to play up as i
    added more modules. I currently run 9 off two of the hubs i showed. Yours are industrial type so should be good.
    Regards
    Les