Barco 1080p 72hz - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 16 Old 09-12-2010, 02:39 AM - Thread Starter
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Hi to everyone,someone tried the lumagen radiance with hdfury3 to 1080p72hz with barco projector? (I have the 909 reality /cine9)

Because I doubt that the port3 or port5 of barco supports 1080p,and before spending other $250 usd for hdfury I wanted to know if it works

Thank
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post #2 of 16 Old 09-12-2010, 06:58 AM
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Port3 sucks with 1080, but port5 works fine with it.

My old BG1200 -92 worked fine with 1080p72 fed from pc, but don't know how new scalers and furys can handle that high pixel clocks. Older ones was limited to 165 MHz pixel clocks.
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post #3 of 16 Old 09-12-2010, 07:13 AM
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And there's modded boards, with hdmi, as another (pricier) option.
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post #4 of 16 Old 09-12-2010, 12:38 PM - Thread Starter
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I already own the lumagen,he has 233 mhz of pixel clock,and hdfury (THEY SAY) has 225 mhz, but I don't have him,but before spend also $250usd for hdfury,I wanted to be sure that the port of the projector worked,but If you say that the port 5 to you works, I think it should work also to me

Thank
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post #5 of 16 Old 09-13-2010, 08:49 AM
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Get the Moome external for 1080p 60Hz or 1080p 72Hz. It is much better and will show these with little to no attenuation.

HDF3 multiburst running 1080p 60Hz:



Moome external running 1080p 72Hz.



Need I say more?

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post #6 of 16 Old 09-13-2010, 10:15 AM - Thread Starter
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Also the moome is 225Mhz pixel clock? You mean this?

EXT-FULLHD v2

If you say that you haven't tried and is better of hdfury3,I buy this
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post #7 of 16 Old 09-13-2010, 07:01 PM
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When I had my Runco dtv-1200, I used the Moome Ext v2 and never had a problem. I had the fury2 also, and never used it. If it ain't broke, don't fix it.

Barco Graphics 808s
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post #8 of 16 Old 09-13-2010, 11:17 PM - Thread Starter
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Another question,to connect the MOOME to the projector port 5 is better the cable vga-5 bnc or vga-3 component?
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post #9 of 16 Old 09-14-2010, 03:31 AM
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I used the BNC connection.

Barco Graphics 808s
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post #10 of 16 Old 09-14-2010, 08:08 AM
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I got a PM question regarding the photos I posted so here is the answer and explanation.

The photos I posted are of my oscilloscope displaying a multiburst test pattern from my Accupel HDG-4000 test pattern generator. To get the scope to display the pattern, the green BNC from the HDMI to RGBHV transcoder was connected to the scope input. A multiburst pattern looks like the image below when shown on your projector screen.



What the multburst pattern shows is the bandwidth of the device being tested. The black and white alternating lines start out wide on the left and then get narrower and narrower towards the right side of the pattern. At the right side with the thinnest lines, the black and white lines are literally one pixel width wide. Since the lines are only one pixel width wide, they represent the maximum resolution of the device being tested.

The scope photos show 1080p 60Hz. What you see on the projector screen is a black and white alternating line. The scope shows the rise and fall of these lines as they go from black to white and back and forth.

Ideally, when you look at the multiburst on the projector screen, the 1 pixel wide lines would be just as bright as the lines that are very wide. In real world analog this is never the case.

However, what you want to see is a transcoder that does as good a job as is possible. If a transcoder were perfect, all the lines in the burst pattern from the thick ones to the thinnest ones would be exactly the same height (amplitude) on the scope.

What you see on the Moome box is that all the lines are the same height except for the very finest 1 pixel wide lines. What you see on the HDF3 is a kind of hour glass shape to the different width lines and the tightly spaced lines (high frequency) are not nearly as tall as the wide lines (attenuated). This means that the image can not be as sharp because the bandwidth is attenuated before it hits the projector and you can't properly draw edges of objects (softer).

Another observation from the scope shot is that there is a lot of noise and irregularities in the HDF3 multiburst. You can also see a lot of peaking (edge enhancements) on the high frequency part of the burst on the HDF3. The Moome box does not have these problems either.

On a 7" projector this won't really matter, on a good 8" projector it will make a difference, and on a good 9" projector it will make a huge difference.

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post #11 of 16 Old 09-14-2010, 08:37 AM - Thread Starter
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Many thanks Craig for this detailed explanation! And thanks for giving me the right choice,fortunately I asked here before buying the hdfury3,now I buy the moome ext,and we shall see!
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post #12 of 16 Old 09-25-2010, 06:46 PM
 
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Great work Craig! It's always good to see real science at AVS.
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post #13 of 16 Old 09-27-2010, 06:38 PM
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Quote:
Originally Posted by ChrisWiggles View Post

Great work Craig! It's always good to see real science at AVS.

Thanks Chris

I actually have scope shots of pretty much every DVI/HDMI to RGB transcoder that is out there... I don't post all their photos to protect the nearly innocent I will say that Moome has gotten a lot better with each design over the past 5+ years, but I am not sure sure about the others.

craigr

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post #14 of 16 Old 12-03-2010, 05:00 AM
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Hi Craig,

I've read that you have connected the green RGB cable to your oscilloscope.
Have you terminated (75Ohm) the line on the oscilloscope or is just connected to the high-impedence input?

I'm sorry for the probably stupid question, but I think that it can make a difference in that kind of measure.

Thank you for the test, very interesting!

Bye,
Edoardo
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post #15 of 16 Old 03-25-2011, 12:35 PM
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If my CRT PJ can't do 1080p at all, what's the highest I should run the HDF3?
720p72Hz?
Will the HDF3 support 900p?

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post #16 of 16 Old 04-05-2011, 03:15 AM
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Quote:
Originally Posted by CIR-Engineering View Post

Get the Moome external for 1080p 60Hz or 1080p 72Hz. It is much better and will show these with little to no attenuation.

HDF3 multiburst running 1080p 60Hz:



Moome external running 1080p 72Hz.



Need I say more?

craigr

Nope, you don't need to say anything more. The images say it all. I wish my original Moome ISS NEC switcher card performed like the current one in that second image - the ISS card had serious clamping issues, and the bandwidth did not seem very good (worse than RG6 cables).

I wish a certain satellite engineer would post real measurements like this, rather than saying some subjective rubbish like "200% better"...

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