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+--- Thread: ADC to DVI adapters (/showthread.php?tid=28158)
ADC to DVI adapters - The Grim Ninja - 02-16-2007
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.
Re: ADC to DVI adapters - incognegro - 02-16-2007
I don't have your answer, but have you seen this?
http://www.amazon.com/dp/B000067RLH/
The list price is a crackup!
Re: ADC to DVI adapters - wave rider - 02-16-2007
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=
Re: ADC to DVI adapters - Lux Interior - 02-16-2007
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.
Re: ADC to DVI adapters - The Grim Ninja - 02-16-2007
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.
Re: ADC to DVI adapters - Joey Cupcakes - 02-16-2007
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!)
Re: ADC to DVI adapters - deckeda - 02-16-2007
[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.asp?DataName=DC-DA1 ($350!)
Re: ADC to DVI adapters - deckeda - 02-16-2007
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-Display-M7649-ADC-USB-Video-Power-Cable_W0QQitemZ290077489787QQihZ019QQcategoryZ81687QQrdZ1QQssPageNameZWD1VQQcmdZViewItem