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CRT output signal strength

Forum Graphic & Displays : Graphics Cards - CRT output signal strength

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johnoh   11-18-2002 at 09:57:14 PM

I have a 21" monitor about 50 feet away from the system and despite having a special shielded cable the flicker is still pretty bad using its maximum refresh of 85hz at 1600x1200. The video card is an ati 8500le. I assume that cards vary in the strength of their output signal and am looking for advice as to what card would minimize the flicker. Is there a reference measurement that I can look up, or does anyone have knowledge as to what card(s) provide the strongest analog output signal, which would reduce this flicker. Thanks.

John A

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phsstpok   11-18-2002 at 10:31:12 PM
- 0 +

Isn't signal strength standardized? 0.7-1.0 peak-to-peak voltage (whatever that means) at each of the RGB pins?

I've heard of VGA boosters but that was a while ago and they were expensive.

Did a quick search. Would something like this work for you?

<A HREF="http://www.compuplus.com/insidepage.php3?sid=b5bm202ayjd2hm5&id=1000030&track=searchViewed" target="_new">http://www.compuplus.com/insidepage.php3?sid=b5bm202ayjd2hm5&id=1000030&track=searchViewed</A>

Oops. That only goes to 70 Hz at 1600x1200.

Here's another one. It is higher frequency capable but doesn't say what it can do at 1600x1200.

<A HREF="http://www.compuplus.com/insidepage.php3?sid=b5bm202ayjd2hm5&id=1000055&track=searchViewed" target="_new">http://www.compuplus.com/insidepage.php3?sid=b5bm202ayjd2hm5&id=1000055&track=searchViewed</A>

Also, the above are splitter/boosters. Don't know if the boost will get you above original strength or if it's just intended to bring each of the split signals up to the original level.

<b>99% is great, unless you are talking about system stability</b>

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johnoh   11-18-2002 at 10:40:49 PM
- 0 +

Either of those look like they would work. Thanks. My first choice is to find out if one card is stronger than another though - the flicker on this monitor varies with each card I've tried at constant refresh rate of 85hz.

John A

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phsstpok   11-18-2002 at 11:25:28 PM
- 0 +

Can't help you there.

<b>99% is great, unless you are talking about system stability</b>

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