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Gamma option setup guide

 
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JonFo




Joined: 29 Aug 2007
Posts: 15



PostLink    Posted: Sat Sep 01, 2007 12:01 pm    Post subject: Gamma option setup guide Reply with quote


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Since the setup of gamma with the new cards seems to be somewhat of a head scratcher for many people (including myself when I first got the card this week), I decided it would be helpful to my own memory and to the community to document how Gamma controls work on the Moome HD cards.

While I have a Sony IFB-HD card (v1.332), I believe these instructions apply to all the recent vintage Moome Gamma enabled cards (as long as they have the gamma circuit and adjustment screw installed).

I just ran through these again on my G70 to validate, but if there are corrections or other observations, Id be happy to revise the doc.

Enjoy.
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kal
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Joined: 06 Mar 2006
Posts: 16758
Location: Ottawa, Canada

TV/Projector: JVC DLA-RS56


PostLink    Posted: Sun Oct 14, 2007 3:53 am    Post subject: Reply with quote

Thanks for providing this! Very useful! I've linked to this post from all of Moome's product FAQs.

Kal

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Nashou66




Joined: 12 Jan 2007
Posts: 16170
Location: West Seneca NY


PostLink    Posted: Tue Apr 29, 2008 12:10 am    Post subject: Reply with quote

I just was trying to tun the Gamma screw all the way off , is it suppose to stop? because mine just keeps turning.
Athanasios

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kal
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Joined: 06 Mar 2006
Posts: 16758
Location: Ottawa, Canada

TV/Projector: JVC DLA-RS56


PostLink    Posted: Tue Apr 29, 2008 12:11 am    Post subject: Reply with quote

no, it's a multi-turn pot. There's no "end".

Kal

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Nashou66




Joined: 12 Jan 2007
Posts: 16170
Location: West Seneca NY


PostLink    Posted: Tue Apr 29, 2008 12:16 am    Post subject: Reply with quote

So how are you supose to know when its at its minimum setting? just go about 25 turns like the guide suggest?

Athanasios

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David1




Joined: 20 Dec 2006
Posts: 24



PostLink    Posted: Thu May 22, 2014 8:20 pm    Post subject: Reply with quote

I tweaked the contrast control on my card and now what ?
Assuming you own a scope how would someone go and reset the contrast control back to .07mv ? Do you need and extender for the card ?
How can you scope a HDMI card , in old days could scope the RGB with the green pin but how does that happen in this digital world?
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CIR Engineering




Joined: 25 Aug 2008
Posts: 4178
Location: Chicago USA & Berlin Germany

TV/Projector: JVC NX9 + Paladin DCR & Sony G90 : Lumagen Radiance Pro


PostLink    Posted: Thu May 22, 2014 8:46 pm    Post subject: Reply with quote

David1 wrote:
I tweaked the contrast control on my card and now what ?
Assuming you own a scope how would someone go and reset the contrast control back to .07mv ? Do you need and extender for the card ?
How can you scope a HDMI card , in old days could scope the RGB with the green pin but how does that happen in this digital world?

It's the same thing.

Connect a lead wire to the green pin of your card and run it out the back when you plug the card into the projector. Then feed the card an HDMI signal with a 100 IRE white window on a black background.

Connect the scope to the wire lead from the card. Adjust the contrast so that the white window is 0.7 volts above the black background as seen on your oscope.

craigr

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David1




Joined: 20 Dec 2006
Posts: 24



PostLink    Posted: Thu May 22, 2014 11:59 pm    Post subject: Reply with quote

THANKS SO MUCH !!! Perfect answers
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David1




Joined: 20 Dec 2006
Posts: 24



PostLink    Posted: Fri May 23, 2014 12:36 am    Post subject: Reply with quote

THANKS SO MUCH !!! Perfect answers - but which is green pin?
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