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Crescendo BUF2000 RGB buffer + Gamma
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AnalogRocks
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Joined: 08 Mar 2006
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Location: Toronto, Ontario, Canada

TV/Projector: Sony 1252Q, AMPRO 4000G


PostLink    Posted: Mon Oct 27, 2008 4:45 am    Post subject: Reply with quote


        Register to remove this ad. It's free!
I had a chance to run the BUF2000 as follows last night:

Samsung DTB-H260F ATS tuner w/HDMI out-----HDFury1|BUF2000--F/FVGA converter--6 foot hard wired VGA cable on Samsun 753DF 17" CRT montor.

ATSC box set to 1080i.

I did some screen shots with and without gamma. By chance Sun TV was playing Bikini Destinations.

pics to follow:

EDIT: Added pics



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Backlit, not much facial detail
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Still backlit but now we can see her face
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Dancing by the firelight
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900Img_6828.jpg
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AnalogRocks
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PostLink    Posted: Tue Dec 09, 2008 3:45 pm    Post subject: Reply with quote

Hi Kim, any update on this? Did you go to production with it or are you still in the testing phases?
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beun




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PostLink    Posted: Fri Dec 19, 2008 4:55 pm    Post subject: Reply with quote

All,

The BUF2000 will go into production and should be available early in January. Let me recap the features:

1) RGB and Component amplifier/cable driver with variable gamma in RGB mode only
2) Bandwidth 130MHz+
3) Various sync modes:
- Positive or negative horizontal sync
- Positive or negative vertical sync
- Positive or negative composite sync on H
- Native horizontal sync (passthrough of H input)
- Sync on green
- Fully variable horizontal sync width (usefull for Barco users)

The price for the BUF2000 is expected to be $89

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AnalogRocks
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Location: Toronto, Ontario, Canada

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PostLink    Posted: Fri Dec 19, 2008 6:17 pm    Post subject: Reply with quote

beun wrote:
All,

The BUF2000 will go into production and should be available early in January. Let me recap the features:

1) RGB and Component amplifier/cable driver with variable gamma in RGB mode only
2) Bandwidth 130MHz+
3) Various sync modes:
- Positive or negative horizontal sync
- Positive or negative vertical sync
- Positive or negative composite sync on H
- Native horizontal sync (passthrough of H input)
- Sync on green
- Fully variable horizontal sync width (usefull for Barco users)

The price for the BUF2000 is expected to be $89


Ahh good news! Say Kim, how is the horizontal width going to be adjustable? Is it a switch or a tuning pot?

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beun




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PostLink    Posted: Fri Dec 19, 2008 7:19 pm    Post subject: Reply with quote

Jeremy,

The sync width (not the width of the picture) is changed through a potmeter.


Kim

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AnalogRocks
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PostLink    Posted: Fri Dec 19, 2008 10:12 pm    Post subject: Reply with quote

beun wrote:
Jeremy,

The sync width (not the width of the picture) is changed through a potmeter.


Kim


Wow that's alot of stuff in such a small pakage.

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beun




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PostLink    Posted: Mon Jan 05, 2009 11:04 pm    Post subject: Reply with quote

I know I am slow but I just ordered boards for this thingy. I should get them in a week or so, I have everything else.

Kim

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AnalogRocks
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PostLink    Posted: Tue Jan 06, 2009 6:50 am    Post subject: Reply with quote

Cool. I really need to test your BUF2000 at 1600x1200 at 103Hz and see if it can keep up. Just as soon as I finish arguing with the re-spin of my HTPC.

Do you think it can handle a refresh like that?

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beun




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PostLink    Posted: Tue Jan 06, 2009 3:48 pm    Post subject: Reply with quote

I don't see why not, the amplifier circuits are wideband enough.
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AnalogRocks
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PostLink    Posted: Sun Jan 11, 2009 11:40 pm    Post subject: Reply with quote

beun wrote:

- Fully variable horizontal sync width (usefull for Barco users)

The price for the BUF2000 is expected to be $89


Hi Kim,
I have a Marquee user with an 8500 in Europe that is having too wide porch issues at 1080i?

Here's a quote from his email:
RoScar wrote:

"Hi I have HDFury1 with RGBHV cable without video processor.I have samsung BD 2500 blu-ray player with reon processor.Yesterday I play a dvd with this player (always to 1080i) and the image was long 3/4 of the screen!With a blu ray the image to 1080i is too much long, with dvd it is too much short!


Would the Buf2000 help him in this situation?

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beun




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PostLink    Posted: Mon Jan 12, 2009 1:08 am    Post subject: Reply with quote

Jeremy,

The BUF2000 will only change the width of the sync pulse, not the width of the active picture content, for that you will need a scaler.


Kim

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AnalogRocks
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PostLink    Posted: Mon Jan 12, 2009 2:30 am    Post subject: Reply with quote

Ok Kim, thanks for the clarification. Where would you need this feature usually?
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beun




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PostLink    Posted: Mon Jan 12, 2009 3:23 am    Post subject: Reply with quote

Which feature?
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AnalogRocks
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PostLink    Posted: Mon Jan 12, 2009 3:44 am    Post subject: Reply with quote

The changing of the sync pulse width.
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beun




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PostLink    Posted: Mon Jan 12, 2009 4:56 am    Post subject: Reply with quote

I noticed that some projecotrs need a longer H-pulse width than standard provided by the Fury (Like Barco's). The BUF2000 will provide the ultimate flexibility.
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AnalogRocks
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PostLink    Posted: Mon Jan 12, 2009 4:59 am    Post subject: Reply with quote

Great. That's good to know. I have somehting else I can recommend to people. I love this forum.
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Tony Fonseca




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PostLink    Posted: Mon Jan 12, 2009 7:39 pm    Post subject: Reply with quote

What is the best one ? The Buf 200 or the Gammax ?
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Tony Fonseca




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PostLink    Posted: Mon Jan 12, 2009 7:40 pm    Post subject: Reply with quote

The Buff 2000 i mean.
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PostLink    Posted: Mon Jan 12, 2009 7:40 pm    Post subject: Reply with quote

The Buff 2000 i mean.
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beun




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PostLink    Posted: Tue Jan 13, 2009 5:04 am    Post subject: Reply with quote

Ok guys,

I just put together the first production version of the BUF2000 and it looks great, everything works and it fits in the case. I have to buy a few more parts but I can start shipping next week.

I will make some pictures and put it up at the website.


Kim

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