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Activity Forums AJA Video Systems analog output levels

  • analog output levels

    Posted by Jeff Kosmicki on September 1, 2009 at 8:19 pm

    I can’t seems to get the analog output levels at 7.5 IRE. Switching the playback options/analog output between Component SMPTE and Component Betacam NTSC, does not change the output image at all, black is always at 0 IRE. (component output is going into a Videotek waveform). This is the same in Premiere, AE, Photoshop and Machina. How do I get 7.5 black levels?
    thanks.

    Jeff Kosmicki
    http://www.toyraygun.net

    Jeff Kosmicki replied 16 years, 8 months ago 2 Members · 6 Replies
  • 6 Replies
  • Tim Kolb

    September 2, 2009 at 2:42 pm

    When you run out bars, is the pluge where it’s supposed to be, or does it center at 0 as well?

    TimK,
    Director, Consultant
    Kolb Productions,

  • Jeff Kosmicki

    September 2, 2009 at 3:52 pm

    Tim,
    Yes, pluge centers at 0.

    Jeff Kosmicki
    http://www.toyraygun.net

  • Tim Kolb

    September 4, 2009 at 12:52 pm

    What happens when you switch to NTSC-J?

    Have you attempted to reinstall the drivers? Any changes to the system lately? Have you output before with proper black levels?

    I assume you’ve confirmed the scope is calibrated.

    I won’t be near my workstation for a while…so I’m trying to recall the Machina settings available…

    I don’t think that pedestal is independently switchable…it’s attached to the setting.

    TimK,
    Director, Consultant
    Kolb Productions,

  • Jeff Kosmicki

    September 4, 2009 at 1:37 pm

    Switching to NTSC-J does not change anything. In fact switching between the 3 settings, NTSC, NTSC-J and SMPTE does not change anything, swithcing to RGB blanks out my monitor (of course) so I know something is happening.
    This is a new LHi install on a system that was running a different card. Nothing has changed in the suite except the new LHi and Nvidia card. I’ve had a lot of trouble getting the Xena to work properly, and have installed and uninstalled the drivers many times over a week, turns out switching PCIe slots made all the difference.
    Scope is definitely calibrated, but I will double-check everything else in suite and make sure something didn’t get switched.
    Thanks for the advice.

    Jeff Kosmicki
    http://www.toyraygun.net

  • Tim Kolb

    September 8, 2009 at 1:13 am

    That’s odd…obviously the blacks should change between NTSC and NTSC-J.

    Are you running CS4 or CS3?

    If you are running CS3, can you put in drivers from one version back?

    TimK,
    Director, Consultant
    Kolb Productions,

  • Jeff Kosmicki

    September 9, 2009 at 2:57 pm

    I worked with AJA tech support and they were able to reproduce the problem and confirm the bug. I don’t know if it is only LHi or all of the Xena line.

    Jeff Kosmicki
    http://www.toyraygun.net

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