Viewing 3 posts - 1 through 3 (of 3 total)
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  • #485
    yorkie98
    Participant

    Hi, I want to just clarify a couple of things to do with tilt and calibration for tilt measurement.

    Let’s say I’m using my 1st PC to measure tilt. First thing I do is using the paralell port trick in bbcal, set the tilt on the screen until my squarewave looks right. If I then connect the output from the second PC into the same card, bbcal still running, set the BBP on PC2 to 60hz squarewave, and adjust the tilt output on BBP until the squarewave looks right again, is BBP calibrated correctly now?

    Finally, for simply adjusting the tilt, does the soundcard being used need to be 192khz or will any soundcard be ok for looking at the 60hz squarewaves? I’m not using this for MPX measurements just to get the tilt correct.

    The reason I’m asking is that I’m looking to get some kit together for easily setting up BBP in the field.
    I’m hoping ultimately that the built in soundcard on my laptop will suffice and I can use its own paralell port to set up the 1st tilt measurement.
    I dont even feel the need to make mpx measurements as I’m 100% confident that as long as BBP is calibrated correctly, and pilot levels are correct, the deviation shown on the TX will never be overshot and the sound will be market leading.

    TIA.

    Yorkie.

    #8402
    Leif
    Keymaster

    [quote author=”yorkie98″]Let’s say I’m using my 1st PC to measure tilt. First thing I do is using the paralell port trick in bbcal, set the tilt on the screen until my squarewave looks right. If I then connect the output from the second PC into the same card, bbcal still running, set the BBP on PC2 to 60hz squarewave, and adjust the tilt output on BBP until the squarewave looks right again, is BBP calibrated correctly now?[/quote]

    Yes, it should be!

    [quote author=”yorkie98″]Finally, for simply adjusting the tilt, does the soundcard being used need to be 192khz or will any soundcard be ok for looking at the 60hz squarewaves? I’m not using this for MPX measurements just to get the tilt correct.[/quote]

    Any sound card will do — 192k is neither required nor used.

    ///Leif

    #8403
    yorkie98
    Participant

    Excellent, thanks for clarifying this for me.

    Yorkie.

Viewing 3 posts - 1 through 3 (of 3 total)
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