RGB LED issue (b2901 3.1.8)

I'm having an issue with my RGB LED's. (Using Generic RGB LED profile)

If I change the color live in the programmer, all seems fine. However, if I do it in blind (and use PIG+BLIND for timing) or in cues, there are some strange anomalies that are happening.

Example:
Cue 1 - LEDs in Amber at 58%
Cue 2 - LEDs change to Congo (just changing color)

Have cue 1 running....

Now, press BLIND
Select LED's
Select another color (Congo for example)...no intensity selected
Color Time 5 Enter
Pig+Blind

The LEDs will drop intensity in a 0 count and then fade to the color in the programmer restoring the intensity. Even with Intensity in the programmer at 58% (matching the cue), I still get the intensity drop.

I doesn't show this in the output window, but if you open the DMX window, you can see it doing it. Coming out of the programmer (Pig+Blind again) it will fade properly. I have tried everything I can think of to get it NOT to do it, but I can't get around it. The only thing I've been able to do is take the intensity out, delay the color in a 0 count and restore the color. I don't think I should have to be doing this.

Any ideas....
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  • 0
    Hey Jon,

    This sounds a lot like a sister issue to something I logged about a year ago. There is some interesting calculation problems we run into with the CMY color space. Read over this bug report and see if these principals apply to what you are seeing.

    Here is the bug that is logged:

    When RGB LEDs are mixed using CMY and have a value less than 100%, then stomping them with another list which is mixed with CMY at 100% intensity will cause an undesired drop out of intensity while performing the stomping xfade.

    Here is the description and repro from the customer:
    I´ve 20 LED-fixtures (Generic RGB LED)
    In cuelist 1 cue 1 : master intensity at 50% with color mixed to red using cmy
    In cuelist 2 cue 1 : master intensity at 100% with color mixed blue using cmy
    When cuelist 1/1 is active and I start cuelist 2/1, the intensity breaks down to 20% and fades up to 100% with fade timing.

    Notes:
    1) The lower the master intensity value is on the stomped cuelist the more obvious the intensity drop out is during the xfade.
    2) This does not occur when uisng I-red, I-green, I-blue
    3) This does not occur in a single cuelist situation
Reply
  • 0
    Hey Jon,

    This sounds a lot like a sister issue to something I logged about a year ago. There is some interesting calculation problems we run into with the CMY color space. Read over this bug report and see if these principals apply to what you are seeing.

    Here is the bug that is logged:

    When RGB LEDs are mixed using CMY and have a value less than 100%, then stomping them with another list which is mixed with CMY at 100% intensity will cause an undesired drop out of intensity while performing the stomping xfade.

    Here is the description and repro from the customer:
    I´ve 20 LED-fixtures (Generic RGB LED)
    In cuelist 1 cue 1 : master intensity at 50% with color mixed to red using cmy
    In cuelist 2 cue 1 : master intensity at 100% with color mixed blue using cmy
    When cuelist 1/1 is active and I start cuelist 2/1, the intensity breaks down to 20% and fades up to 100% with fade timing.

    Notes:
    1) The lower the master intensity value is on the stomped cuelist the more obvious the intensity drop out is during the xfade.
    2) This does not occur when uisng I-red, I-green, I-blue
    3) This does not occur in a single cuelist situation
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