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 Message Boards » » Problem with ATI AIW 128 TV-out Page [1]  
Snewf
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keeps saying that the TV is not connected

but it most certainly is... I spent $20 on a replacement proprietary cable so I could make the video out work

any ideas?

1/11/2007 9:12:40 PM

testrada
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What driver release do you have for it?

Was that the original video card or one you added on?

1/12/2007 12:12:21 PM

Snewf
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I'm running the most recent Rage 128 Pro driver from ATI (circa 2001 I think)

it is a discontinued product... but ATI's support sucks anyway so that shouldn't much matter

--

I think the problem might be that the video device I'm hooking this into (an RF modulator) doesn't have enough impedance for the card to recognize that it is attached to a video device

reading some forums has led me to believe that I should make a video cable with a 75 ohm resistor soldered in there somewhere

anyone have any experience with this?

1/15/2007 2:38:00 PM

FanatiK
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sounds to me like you've got your solution

1/15/2007 2:39:39 PM

Snewf
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yeah but I don't know exactly how the cable should work

what I have read suggests that I should solder the resistor from the core to the shield of the cable... essentially shorting it

my question is: is this a pass-through cable? I should just put the resistor in the middle of an existing video cable?

1/15/2007 2:41:37 PM

FanatiK
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I don't have any experience with this in particular, but shorting the cable doesn't sound like a good idea.

1/15/2007 2:45:25 PM

Snewf
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that's what I was thinking

where are my A/V and electronics nerds??

1/15/2007 2:47:33 PM

TypeA
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Soldering a resistor between two points is not "shorting" a connection you morans.

1/15/2007 2:59:22 PM

Snewf
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oh yeah?

so... on an RCA cable I've got the two parts - the center pin and the shield

can you explain to me why placing a resistor between these two parts doesn't short it?
will this work?

1/15/2007 3:13:02 PM

TypeA
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The RF modulator has some sort of characteristic input and output impedance. It should be 75 on both ends, but maybe it isn't. Sticking a 75 ohm resistor between the center pin and ground means you are paralleling the input impedance of the modulator with the 75 ohms. If for some reason the RF modulator has a very high input impedance (which is maybe why your card can't detect it), then the 75 ohms will dominate getting you the impedance that the card is looking for.

1/15/2007 3:21:51 PM

Snewf
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awesome

I'm going to make this cable as soon as a friend brings some resistors over

[Edited on January 15, 2007 at 4:16 PM. Reason : hopefully I've got something that adds up to 75 ohms in there]

1/15/2007 4:15:51 PM

Snewf
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hmmm

didn't seem to do the trick

the RF modulator's light stays on now as if it were receiving a signal

but my software still doesn't recognize that a TV is connected

is there some way to force TV out?

1/15/2007 9:23:52 PM

Snewf
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hmmm this is still a problem

god damn this card

1/23/2007 12:28:13 PM

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