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 Posted: Feb 14th, 2009 03:17 AM
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neilfellowes
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Good morning all :-)

I am having a "thick day" and need some very minor technical assistance.

I have just been given a 19" CRT PC monitor which I would like to use for video feedback loop work and I am having trouble trying to sort out a suitable lead/converter for my video camera to the monitor.

Can anyone tell me what I need to get please?

By the way, you can laugh at me about this :-)

Neil

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 Posted: Feb 14th, 2009 09:11 AM
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neokortex_simulacrum
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You should connect your camera to the PC, not the monitor trough a TV tuner card's RCA input (composite).

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 Posted: Feb 14th, 2009 04:31 PM
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lance
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Hello Neil...

   Have you got firewire connection on your cam or USB?

Lance..



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 Posted: Feb 14th, 2009 04:50 PM
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neilfellowes
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Hi Lance,

I've got firewire capabilities, but I'm wanting to bypass the computer completely and go direct into the monitor. I've got a lead that may do the trick on it's way to me, so fingers crossed.

Neil

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 Posted: Feb 14th, 2009 04:59 PM
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lance
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Ahhh, I got you!!

  Well touch wood! It will do the job for you, keep me posted..

 speak soon, Lance..

 



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 Posted: Feb 14th, 2009 05:07 PM
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neilfellowes
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Will do :-)

Neil

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 Posted: Feb 14th, 2009 09:29 PM
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Slider2732
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*edit*
Oops, didn't see all the replies...hope the lead works :)
I've left what I originally put though, in case it's of help.

Nah, no laughing, it looks simple but quickly you realise it's just not the same setup as a TV.

Direct connection of the camera is pretty difficult, being as the camera will work at a low 15kHz rate and the PC monitor will work at 31kHz and up. Scan converters can be used, but they're not cheap as far as I recall.
There are probably regular camcorders that can output directly to a PC monitor, but personally I don't know anything about them.

The way i've managed feedback on PC CRT's, is to connect up to a PC and run a regular webcam with associated software. The software is made to go full screen and the webcam set up similarly to using a TV. The feedback looks very similar, in my opinion.

A capture card can be used instead of a webcam, so you can use a better camera.

If the webcam software doesn't go full screen, you can still get good feedback, by altering the distance of the camera to the screen as a little closer. If you centre the image, then run the program with a black background behind on the desktop (or have a black blank full screen image done in Paint and the webcam program on top) you can still avoid artifacts from outside of the image. Another tip there, is to set your window parameters to as dark as possible and yet be useable..that way, when the webcam software works, you get dark all over and even on the edges of the webcam software window.

Last edited on Feb 14th, 2009 09:37 PM by Slider2732

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 Posted: Feb 15th, 2009 11:29 AM
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Keith Clark
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Hi Neil,

There are converters that can convert rca to vga and back.

Google "vga to rca converter"

and

"rca to vga converter" and youwill find plenty of hits.

Keith

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 Posted: Feb 15th, 2009 12:18 PM
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neilfellowes
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Cheers Keith :-)

I've got an RCA to BNC lead coming my way - I shall report back accordingly!!!

Neil

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