Looking for "flicker" specifics realating to refresh rates. - AVS Forum | Home Theater Discussions And Reviews

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post #1 of 3 Old 06-07-2016, 08:19 PM - Thread Starter
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Looking for "flicker" specifics realating to refresh rates.

I'm working on a project and I need to test or know one very key point to as many TV's as possible.

I need to know the length of time a given TV will go black during playback. To the best of my limited knowledge on the subject this is not the refresh rate. I do not care when the screen is updated but rather when and if the screen goes back and for how long. Also this may change based on out put 1080/720/RCA/svideo or what ever, I don't know. If there is a tool to test this, that would be perfect.

Preferably for all back lit TVs but targeting Plasma and LCD. Thus far it seems that Plasma's are either going black for a few MS or dimming then getting brighter. I just can not tell which.

If anyone here has any info on the matter please do share.
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post #2 of 3 Old 06-08-2016, 02:55 PM
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Try the HDTV section - this is a projection screen section.

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post #3 of 3 Old 06-09-2016, 03:21 PM
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Quote:
Originally Posted by ulao View Post
I'm working on a project and I need to test or know one very key point to as many TV's as possible.

I need to know the length of time a given TV will go black during playback. To the best of my limited knowledge on the subject this is not the refresh rate. I do not care when the screen is updated but rather when and if the screen goes back and for how long. Also this may change based on out put 1080/720/RCA/svideo or what ever, I don't know. If there is a tool to test this, that would be perfect.

Preferably for all back lit TVs but targeting Plasma and LCD. Thus far it seems that Plasma's are either going black for a few MS or dimming then getting brighter. I just can not tell which.

If anyone here has any info on the matter please do share.
Here is a document that includes details for a simple high-speed meter that I build a year ago to measure flicker (on my JVC projector) and would be happy to answer any questions (and share the source code, if I can find it) if you choose to reproduce the design. For your use case, you'd probably want a few sensors to be able to differentiate full screen blanking vs a rolling blanking for example.

https://drive.google.com/open?id=0B5...pVanNYWUZ1blYw
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