Running 4 LCD displays with video switcher

Hi,

I need a little help choosing a video card that's capable of what I am trying to do. I want to run 4 LCD TVs off a video switcher and use a computer as an input. It'll mostly be used for showing slide shows, pictures and the odd video thrown in.

Here's what my set up is already like (I don't have a choice btw, this stuff has already been purchased and installed):

- Kramer VS-626 6x6 Video and Stereo Audio Matrix Switcher
- Cat6 ethernet wired up to every LCD TV location
- Converters on each end that convert the ethernet to RCA plugs
- Asus ATi A9550GE video card currently hooked up to a regular 17 inch CRT and it's S-video hooked up to my video switcher.
- 3 Westinghouse LVM-37w3se 37 inch LCD TVs and 1 other large display

The card I have now is doing the job but not at the res I need. Right now, I'm just mirroring the desktop on the monitor to the TV out on the card and running at 1280x768. It works...but its not enough.

I basically need a card with an RCA video out or even an S-Video out that is capable of running 1920x1080. The card must be able to do this through the S-video out or it's no good. No worries about needing the power to simultaneously run 4 large LCD monitors though, the video switcher just need that analog input and it'll do what it needs to to make that signal appear on 4 monitors.

Does anyone know of a card that can produce an analog signal along a TV-out with this large of a resolution?

Or is there some way of converting a DVI or VGA signal to RCA and still maintain the resolution?

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What you are looking for does not exist. Composite and S-video are made for resolutions of upto about 800x600. Above that resolution you need relatively high frequency pixelclocks which the cables can't handle that well (leads to a lot of signal loss).

When you connect using s-video the resolution the card outputs is 720x480 (NTSC) or 720x576 (PAL) no matter which resolution you specify in your card setup, it a TV-Out compliant signal. The image is scaled to fit into this view.

If you really want high resolutions for tvout (HDTV) you should use either component or hdmi/dvi.

Reply to firemist

Quote :

What you are looking for does not exist. Composite and S-video are made for resolutions of upto about 800x600. Above that resolution you need relatively high frequency pixelclocks which the cables can't handle that well (leads to a lot of signal loss).

When you connect using s-video the resolution the card outputs is 720x480 (NTSC) or 720x576 (PAL) no matter which resolution you specify in your card setup, it a TV-Out compliant signal. The image is scaled to fit into this view.

If you really want high resolutions for tvout (HDTV) you should use either component or hdmi/dvi.

Ahh, I see. I figured that was the case since no matter how high powered of a card I looked at, the TV out's resolution never got any better than NTSC. Thanks for the information firemist!

I suppose I would need a digitial switcher instead of the current analog box I have now. Running DVI/HDMI to the TVs is probably impossible. I believe the run it has to make is about 200 (maybe more) feet long.

If anyone can think of a way I can get a nice sharp image on those 37 inch TVs, I'd like to hear it.

Reply to Trooze

Don't know what your budget is but if you can go DVI then a swithch / repeater / booster could work. The specific setup depends on the location of the displays. You can look here for some ideas:

http://www.bestcableforless.com/se [...] agod3VK6oQ

Good Luck

Message quoted 1 times

Reply to firemist

firemist wrote :

Don't know what your budget is but if you can go DVI then a swithch / repeater / booster could work. The specific setup depends on the location of the displays. You can look here for some ideas:

http://www.bestcableforless.com/se [...] agod3VK6oQ

Good Luck

Thanks!

Reply to Trooze

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