PAL Monitor Setup Using SMPTE Colour Bars

Discussion in 'Professional Video Production' started by Hughy, Jul 7, 2003.

  1. Hughy

    Hughy Guest

    I'd like to get the PAL setup right. Anybody have a more definitive setup
    procedure, when you don't have a W.A. or Vectorscope? Here's what I'm
    doing currently.

    (1) Set contrast (video gain) control to mid position.
    (2) Reduce chroma to zero (control fully anticlockwise).
    (3) Set black level by increasing brightness control until the middle pluge
    bar (0 IRE) is just below the threshold of visibility and is
    indistinguishable from the LHS (-4 IRE ? ) pluge bar. At this point, the
    RHS (+ 4 IRE) pluge bar should be visible. (The -4/+4 figures are my guess
    at what the bars are in PAL - deduced from Hal Landens NTSC setup).
    (4) Increase contrast to max. Slowly reduce contrast until the white area
    *just* starts to respond.

    In (4), I find it difficult to precisely detect the onset of a reduction in
    brightness. Maybe "close enough is good enough"?

    (5) Setting Chroma - eyeball it until flesh tones look natural. Again, this
    isn't a precise setting.

    Additions or corrections needed?

    Hughy, Jul 7, 2003
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  2. Hughy

    kay & wand Guest

    use pal colour bars!!!!

    kay & wand, Jul 7, 2003
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  3. Hughy

    Hughy Guest

    Umm ... sorry ... yes, I should have stated that. I'm using Premiere 6
    colour bars outputting through a DVStorm to a BT-S1050Y Panasonic 10" field
    monitor via DA, (also to a 34cm Sony Trinitron PAL TV).

    Logically, Premiere should produce PAL bars when a PAL project preset is
    selected. The software waveform analyser included with DVStorm shows the
    Premiere middle pluge bar to be right on 0 IRE units, if the bars were NTSC
    it'd be at +7 IRE I'd have thought. I don't normally use camera bars (XL1,
    which doesn't output SMPTE bars, just some half hearted version with no
    pluges, which I don't think can be used to setup black/white levels).

    Hughy, Jul 7, 2003
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