CurtPalme.com Home Theater Forum

ysati · Joined: 05 Aug 2008 Posts: 44

Now I have more advanced testing.
It seems that color is more explosive, more vivid. Smile

But on the DVE test patterns, you never see the
side bands.
Also the gray scale pattern of 5 IRE is not visible, only from 10 IRE, but it is not the side bands.
I did not use the remote, because unfortunately it does not work?
I have the IFB of John, on the input B and the IFB of Moome on the input C.
At the moment, for me, it was not necessary to spend $400, for this result? Sad

Yves

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

did you see the post from moome where you need to use the A, B buttons to change color space? this might be your issue with not seeing BTB

Athanasios

ysati · Joined: 05 Aug 2008 Posts: 44

CIR Engineering · Posted: Sat Oct 31, 2009 2:58 pm Post subject:

CIR Engineering · Posted: Sat Oct 31, 2009 5:05 pm Post subject:

The screen shot below captures the bandwidth problem. The first photo is with the stock filter and the second is with Mike's filter. I did this mod months ago and have also done it on several of my client's cards.

This is 1080p 60Hz 1:1 on/off pixels.

craigr

CIR Engineering · Posted: Sat Oct 31, 2009 5:08 pm Post subject:

Incidentally, this is a common problem with many DVI/HDMI to RGB converters. I see this attenuation with the HDF1 and HDF2. The HDF1 actually has a slightly better response than the HDF2. I have looked at ALL of these on my oscilloscope as well and may post photos of the scope to illustrate.

The only two boards I have confirmed to have full bandwidth at 1080p 60Hz are John's original DVI IFB and Moome's FULL-HD with Mike Parker's filter.

craigr

ysati · Joined: 05 Aug 2008 Posts: 44

1031 · Joined: 22 Mar 2006 Posts: 657 Location: Finland

Hello.. Seems that my new marquee card has similar bw. limit problem. Anotherwise it seems to be better than older hdmi card. Here are two (crappy celphone photos) One with 1080i and second with 1080p (both 60hz) . i´d like to test that filter with MP´s suggested components. This solution does limit BW too much and takes defenatly some "edge" out of picture.
So Moome can you PM me what components must be changet to get filter circuit similar to that what MP recomendet. I´m familiar with SMD components.

CIR Engineering · Posted: Sat Oct 31, 2009 6:13 pm Post subject:

CIR Engineering · Posted: Sat Oct 31, 2009 6:14 pm Post subject:

mp20748 · Posted: Sat Oct 31, 2009 6:43 pm Post subject:

ysati · Joined: 05 Aug 2008 Posts: 44

ysati · Joined: 05 Aug 2008 Posts: 44

mp20748 · Posted: Mon Nov 02, 2009 1:55 pm Post subject:

I've been corresponding with Moome over the past several days concerning the possible problem with the latest cards having a HF problem.

All I can say for now is that the potential problem is seriously being looked into.

And to add, let me say this, as I've indicated this so many times in the past about the last two versions of the Moome cards. The last two versions (v1.2 / V1.3) were well thought out from a design point. And what I mean by that is that he did very well in his design when putting both analog and digital (mixed signal) circuits on the same PC board on a close area.

I spent a good amount of time over the weekend once more looking at the design while looking at things from various technical perspectives. His design is very impressive in that he put a lot of design work into keeping the digital crap (clock/processing noise) away from being a problem in the analog circuits. There's a lot of de-coupling going on on that small board. much more than I've seen on anything. And it measures out well.

In most cases these designs ideas are played out on paper (math), but the math is not always correct. In the case of this board design, the math was close and it appears that he spent a lot of time also doing what should always follow the math, and that was to test and verify things. That is how he was able to do so well with his design, with only one area of exception. And this particular area is almost not done right by everyone (my opinion). it's a problem area that the math is never correct, and the process of finding that particular sweet spot that's needed for 1080P /60 requires a lot of R&D using several pieces of test gear and you're have to use a particular group of test patterns to dial things in properly.

I've said it so many times in the past, 1920x1080P 60 or 72 hz is a very tricky frequency to properly convert to a clean and properly resolved HIGH Performance analog signal.

I still can't post here anything that we've been looking at so far, because anything that I'm doing for this is proprietary info. so it's not mine to disclose.

So take my word for it that whatever the problem may be if any, it would be solved or corrected soon. And that for anyone getting the fix, update would be getting something that far exceeds anything that i was expecting from this card.

Trust me on this one.. Wink

There may be somewhat of a communication problem dealing with Moome, but let me assure you that he is one very conscientious guy when it comes to trying to make sure things are right. That I did not know so well about him until this past week.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

YEp, got an e-mail from Moome he'd be shipping my Vim Hd cards once they figure out what happened, either a factory screw up or something else. he is a very thorough guy. he'll get it right.

Athanasios

marksG70 · Posted: Mon Nov 02, 2009 2:54 pm Post subject:

I feel you have more respect for him and his engineering workmanship. That helps with my confidence! My concern is I have already ordered the card will I get the fix/update?

CIR Engineering · Posted: Mon Nov 02, 2009 3:45 pm Post subject:

hlmiii · Joined: 03 Jan 2008 Posts: 12

Mike -

Would you advise me to pull my new board out and return it to Moome now?
Or wait?

I have both of his earlier boards that I can use until the updated/replacement product is ready and back in my system.

Thanks.
Smile

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Craig , will he implement the force YCbCr 422 or 444 to the marquee Vim HD also? I assume he will since they probably use the same software .

Athanasios

CIR Engineering · Posted: Mon Nov 02, 2009 3:55 pm Post subject: