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Thread: Fb3 worth it?

  1. #51
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    There's a bit of a discrepancy then if we're looking for 5V on the RGB lines.. Given the inherent non-linearity of DPSS, that could manifest itself with a huge loss of power.

  2. #52
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    Quote Originally Posted by sugeek View Post
    Here are some scope pictures, as requested DZ.

    -Adam
    This is more like it, ok, what type of frame are you displaying, which color channel are you on and is the laser attached?

  3. #53
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    Just wondering, If that was the case do we have the ability to adjust our blanking from 0-4V in our laser power supplies?

  4. #54
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    Quote Originally Posted by f22warzone View Post
    Just wondering, If that was the case do we have the ability to adjust our blanking from 0-4V in our laser power supplies?
    In the same line of questioning, will your color correction board compensate via hardware rather than software (DZ)? I shot the question back to about the scope pictures, I will let you know when I get a response.

    -Adam
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    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

  5. #55
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    Quote Originally Posted by DZ View Post
    This is more like it, ok, what type of frame are you displaying, which color channel are you on and is the laser attached?
    The channel is green, no is laser attached, first shot: full 100% second shot: half 50% - color full green
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    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

  6. #56
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    In the same line of questioning, will your color correction board compensate via hardware rather than software (DZ)?
    Potentially, here's the issue, the color gain pot on the color board is part of an inverting opamp where you have a 10K resistor on the "-" input of the opamp and an 11K resistor in the feed back loop. So at best, you can turn the 4V into 4.4V. On the flip side, the color board also has offset, so if all your lasers require at least .6V before they begin to emit light, then yes, the color board would completely compensate for a 4V max input signal without modification to the board. And on a postive note, the output of the color board is protected, so that if the input suddenly jumped from a max of 4V to 15V, the output of the color board would not exceed 5V.

    This doesn't fix the FB3 problem though, it really should be able to reach 5V. Do you have a calibration bar on your scope, how does it check out?

  7. #57
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    Quote Originally Posted by DZ View Post
    This doesn't fix the FB3 problem though, it really should be able to reach 5V. Do you have a calibration bar on your scope, how does it check out?
    It is set right at 5 volt running a square-wave.

    Quote Originally Posted by DZ View Post
    Potentially, here's the issue, the color gain pot on the color board is part of an inverting opamp where you have a 10K resistor on the "-" input of the opamp and an 11K resistor in the feed back loop. So at best, you can turn the 4V into 4.4V. On the flip side, the color board also has offset, so if all your lasers require at least .6V before they begin to emit light, then yes, the color board would completely compensate for a 4V max input signal without modification to the board. And on a postive note, the output of the color board is protected, so that if the input suddenly jumped from a max of 4V to 15V, the output of the color board would not exceed 5V.
    I thought I would put out alternatives on the board, a work-around sometimes is the only thing one can get!

    -Adam
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    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

  8. #58
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    Adam, can you post the frame you used for the o'scope test?

  9. #59
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    Quote Originally Posted by DZ View Post
    Adam, can you post the frame you used for the o'scope test?
    Both a static beam from the abstract generator, and frames did about the same output.

    -Adam
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  10. #60
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    Ok, can you try these frames? Just display them one at a time and maybe just tell me what you see on the scope. Or a pic would be nice!
    Attached Files Attached Files

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