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Thread: FAQ: XM Cable/XMD1000 Debugging FAQ (test program included)

  1. #41
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    Nov 2008
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    Quote Originally Posted by HiJackZX1 View Post
    You could always bypass the USB adapter. As far as power, there should be 3 wires, ground, ignition, and constant. You would basically run the constant from the battery to the XMD, your basically cutting out the middle man. The the USB adapter will still continue to use the ignition wire and ground. It should work and be fine. If you are worried about issues, like I said, buy a 12V regulator for line now going from the battery to the XMD. If you need one, I can even send you one. I think I have one laying around.
    There are only 2 wires + and - for the adapter, it comes on when it has power and has no ignition wire. The only cable going from the usb adapter to the XMD unit is a mini din cable that provides the power and data.

    Here is a picture explaining how I have things set up. My only options seem to be to have the XMD unit and the adapter always on or have them come on with the computer. They can not be turned on independently unless I want to cut the mini din cable and I do not want to do that.


    I am not very worried about the power being unregulated because the adapter is able to handle an unregulated input, if it somehow gives me problems I will just get a regulator. I am just worried about draining my battery. I think I will experiment with it later next month to see how much the battery drains, I would do it now but finals week is coming up and if my car wont start I am screwed!

  2. #42
    Who am I? HiJackZX1's Avatar
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    Jul 2007
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    Miami
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    OMFG, your right.... I got confused, happens alot those days. I was getting the HD radio confused with the HD Radio. Let me research really fast, because now I have to look at my install and see how I did this. I dont want to give you incorrect information.
    Nirwana Project, the Android/Win 7 hybrid system!

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  3. #43
    Variable Bitrate navputer's Avatar
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    Quote Originally Posted by shatteredzman View Post
    There are only 2 wires + and - for the adapter, it comes on when it has power and has no ignition wire. The only cable going from the usb adapter to the XMD unit is a mini din cable that provides the power and data.

    Here is a picture explaining how I have things set up. My only options seem to be to have the XMD unit and the adapter always on or have them come on with the computer. They can not be turned on independently unless I want to cut the mini din cable and I do not want to do that.


    I am not very worried about the power being unregulated because the adapter is able to handle an unregulated input, if it somehow gives me problems I will just get a regulator. I am just worried about draining my battery. I think I will experiment with it later next month to see how much the battery drains, I would do it now but finals week is coming up and if my car wont start I am screwed!

    I have this setup and the way I have mine connected is...My mp3car adapter power (2 wires power and ground) wire is going to 12v constant wire (splice) on my M2ATX. I had it going to the 12v ignition wire on the M2ATX but sometimes I power my pc without using the vehicle's power (power converter) to do updates/testing in the house. I just need to rewire my HD radio to do the same thing.

    It works fine for me.
    Gee

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