video and tv output

Hi,

I have a video card 3dfx Interactive Inc. Voodoo3 in a relatively old desktop (pII running win98 se) and I would like to see the monitor output and the tv output at the same time.

When i connect the tv to the video card and startup the system i can see the tv output but on the monitor nothing: appears for some seconds an error signal saying "synch error". When i startup the system with the tv connector unplugged the desktop monitor works properly and is automatically setted at 31kHz/70Hz.  
emanueleverrelliAsked:
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LucFConnect With a Mentor EMEA Server EngineerCommented:
> in a relatively old desktop
Than first check if it supports AGP cards and at what voltage before you decide to buy another card. Most AGP 4x cards will do just fine. But check to be sure.

If you don't know how to identify this, please post your motherboard model (if you don't know it, download AIDA32 from http://www.aida32.hu to identify it for you)

LucF
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jhanceCommented:
Unfortunately, these two outputs are mutually exclusive.  You can get either:

1) VGA output from the VGA connector which is incompable with the TV NTSC or PAL format.
2) NTSC or PAL output from the video out which is incompatible with your VGA display.

There are some video cards on the market that can do BOTH VGA and NTSC/PAL simultaneously but this one is not one of them.
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emanueleverrelliAuthor Commented:
Can you suggest me a good card that fits my case?
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LucFEMEA Server EngineerCommented:
Every card from G-force 4 and up will support this without any problem (I had some problems with G-force 2 cards) You could also look for another vendor if you'd like.

LucF
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