ADC - DVI - ADC Connection possible?

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ADC - DVI - ADC Connection possible?

Hi Everyone,

We put one of our editing machines around to the other room to get it out of the way. In order to make the cable long enough we had to buy an ADC-DVI converter. Run it to a 15' DVI cable, to the mac, then that DVI connection back to an ADC connection on the graphic card. The monitor won't turn on. Is there something plain wrong with connecting things this way around? Any help on the topic would be mucho appreciated since we tried to upgrade to a new card and still experiencing the same problem. Perhaps some kind of incompatibility issue with stepping back and forth between the connections?

The monitors are 1 23" Studio and one 17" Studio both LCDs. They are in proper working order, and if you connect direct into the ADC port without the adapter it works. Radeon X800 Mac edition card under the hood as well.

-Colin

Power Mac G5 Mac OS X (10.4.9)

Posted on Apr 12, 2007 2:23 PM

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Answer 1

Apr 12, 2007 7:44 PM in response to creevesf

ADC port on graphics card, to ADC to DVI adapter, to 15' DVI-D or DVI-I cable, to DVI to ADC adapter (the one with the power supply), to ADC LCD display should work.

Does the ADC monitor work with the DVI to ADC adapter if you plug the adapter directly into the DVI port on the graphics card?

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Answer 2

creevesf Author

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Apr 12, 2007 8:25 PM in response to Malcolm Rayfield

Yes. as far as I can tell, the only time any problems come up is when the ADC-DVI adapter gets thrown into the equation (although, it does work when I want to send a signal to a regular DVI monitor) its left me completely clueless and apple tech couldn't figure out what was going on. You pretty much described our set up perfectly. Seems to be quite the troubleshoot here.

-Colin

ADC port on graphics card, to ADC to DVI adapter, to
15' DVI-D or DVI-I cable, to DVI to ADC adapter (the
one with the power supply), to ADC LCD display should
work.

Does the ADC monitor work with the DVI to ADC adapter
if you plug the adapter directly into the DVI port on
the graphics card?

Power Mac G5 Mac OS X (10.4.9)

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Answer 3

BSteely

Level 5

7,643 points

Apr 12, 2007 10:41 PM in response to creevesf

Just to be completely clear, the ADC-DVI adapter that's plugged into the Mac looks like this:

http://docs.info.apple.com/article.html?artnum=25171

And the ADC-DVI adapter that's plugged into the monitors looks like this:

http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M86 61LL/B

Is that correct?

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Answer 4

creevesf Author

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Apr 12, 2007 10:51 PM in response to BSteely

That is Correct. Thanks for the persistence in the help everyone!

-Colin

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Answer 5

jimhere

Level 2

465 points

Apr 13, 2007 5:53 AM in response to creevesf

I just got a 23" for my olde G4 yesterday. The old 17" was way past warrenty and doing the Fade To Black thing.

I'm ACD to DVI adapter too. It seems I have to use the Power button on the computer to turn it all on.

I asked the Apple guys about it, and they weren't sure what to do since, after all, it DID turn on. After seeing this post, maybe that's the nature of the adapter. Since was planning to get a new computer in the fall, I hope it works itself out.

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Answer 6

Apr 13, 2007 6:22 AM in response to jimhere

I'm ACD to DVI adapter too. It seems I have to use
the Power button on the computer to turn it all on.

I asked the Apple guys about it, and they weren't
sure what to do since, after all, it DID turn on.
After seeing this post, maybe that's the nature of
the adapter. Since was planning to get a new computer
in the fall, I hope it works itself out.

ADC has special pins for power control. DVI doesn't have these pins, so you can't turn on a DVI computer using the display's power button. There is nothing the adapter can do about this.

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Answer 7

jimhere

Level 2

465 points

Apr 13, 2007 6:28 AM in response to Malcolm Rayfield

Thanks Malcolm Rayfield. AppleCare should pay you.

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Answer 8

BSteely

Level 5

7,643 points

Apr 13, 2007 8:42 AM in response to creevesf

OK, just a couple more questions then. When you say the monitors "won't turn on" do you mean you are getting a black screen or do you mean the monitors literally don't turn on, as in no LED indicator lamp on the front whatsoever? If the former, then I would try shortening the 15' DVI cable to see if perhaps the cable run is too long and the signal isn't getting through. If it is latter and the monitors aren't powering on at all, then I don't get it because I agree with Malcolm that it should work.

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