ADC to DVI adapters

[The Grim Ninja]

I'm most likely getting a newer computer soon which will come with an ADC capable video card. Since I have two CRT monitors, I need to adapt the ADC to VGA.

I may want to upgrade to LCDs in the future.

If I buy an ADC to DVI adapter, can I use a DVI to VGA adapter with it? I know it's an extra step, but it shouldn't be a big deal. The main question is, is it common practice for the ADC->DVI adapters to include the analog signal lines, or might they simply skip those?


So, if anyone has an ADC-DVI adapter plus a DVI-VGA adapter and wouldn't mind checking, I'd appreciate it. It would save me from needing to buy/sell an adapter when I upgrade.

[incognegro]

I don't have your answer, but have you seen this?
http://www.amazon.com/dp/B000067RLH/

The list price is a crackup!

[wave rider]

Sounds like both of your CRTs are VGA? You may end up with an extra adapter...

I had mixed (VGA and DVI), so I got the ADC > DVI and used the Apple DVI > VGA too. When I got another DVI monitor, I was set.

=wr=

[Lux Interior]

Hey, I was just looking for one of these at monoprice (they had none that i could find).

$990? I wasn't aware the the government was buying these.

You'll need a DVI-VGA adapter on top of that.

[The Grim Ninja]

Right, I'll need two DVI-VGA adapters, which are dirt cheap.

ADC->anything is $25+

I was figuring if I went ADC->DVI then DVI->VGA, I could have an ADC->DVI adapter on hand already when I move to DVI monitors.

Currently I need:
DVI->VGA
ADC->DVI->VGA OR ADC->VGA

In the future I would need:
DVI
ADC->DVI

I have spare DVI->VGA adapters already. It's just the ease of having one less thing to figure out when/if I move to LCDs.

[Joey Cupcakes]

Your plan should work technically.

I recently picked up one of those Belkin ADC-->DVI jobbers off ebay for $15.

(For those keeping score, that's a whopping 98.49% off Amazon's list price!)

[deckeda]

[quote The Grim Ninja] ... If I buy an ADC to DVI adapter, can I use a DVI to VGA adapter with it? ... The main question is, is it common practice for the ADC->DVI adapters to include the analog signal lines, or might they simply skip those? ...
Short answer: Don't think it'll work, certainly not with the Belkin adapter..

Long answer:
I too just picked up the Belkin adapter (look for my thread here a few days ago.)

The standard Apple DVI-to-VGA adapter supplied with G5s etc. won't connect to it, sorry guys --- I wanted to also hook my CRT up to the ADC port on my Mac.

According to http://www.pacificcable.com/DVI_Tutorial.htm, the DVI end of the Belkin is a DVI-D Female Dual-Link, whereas the DVI end of the standard Apple DVI-to-VGA adapter is a DVI-I Male Single-Link --- if you look closely, you'll see that a DVI-I Male Single-Link connector has 4 extra pins on one end with nowhere to go into a DVI-D Female Dual-Link.

(Don't anyone get confused on the single-link vs, dual-link here; it's not referring to analog or digital or digital+analog.)

The other issue is that because the Belkin adapter is a "DVI-D" cable, it doesn't pass an analog signal. It would need to be "DVI-I" to also include an analog signal.

I'm assuming the ADC port has available an analog signal --- 17" Studio Displays w/ ADC were of course CRTs, if that means anything. Anyone know of another ADC-DVI adapter besides the Belkin? (Apple's $99 adapter is a DVI-ADC, not ADC-DVI, so I'm guessing the genders are wrong for here?)

This thing will take a DVi port and give you VGA, for a price: http://www.pacificcable.com/Picture_Page...ame=DC-DA1 ($350!)

[deckeda]

This guy is offering the ADC cable from a 17" Studio Display. Assuming those monitors didn't perform D/A conversion internally ... then I suppose the port (and this cable) are passing an analog signal? I'll bet a schematic would come in handy!

http://cgi.ebay.com/Apple-17-Studio-Disp...dZViewItem