<br><br><div><span class="gmail_quote">On 6/25/07, <b class="gmail_sendername">Michael T. Dean</b> <<a href="mailto:mtdean@thirdcontact.com">mtdean@thirdcontact.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On 06/24/2007 11:05 PM, David Cramblett wrote:<br>> This turned out to be the MSI FX5200 Video card. It just couldn't run<br>> either the 15' cable length or it doesn't like the DVI->HDMI cable, I<br>
> don't know which. However, 15' VGA -> RGB Component worked fine.<br><br>DVI cables were designed to be cheap to manufacture, rather than being<br>designed to carry the DVI signal (SDI), so they are actually far more
<br>sensitive to long cable runs than are VGA cables or component cables.<br>HDMI cables are typically even worse (because--in addition to having the<br>same design flaw as DVI cables--the cables tend to be smaller gauge).
<br><br>Some cable manufacturers do different things to work around the inherent<br>weakness of the design (often adding significantly to the cost of the<br>cables). Whether their techniques work, I couldn't tell you--I'm also
<br>using VGA happily. TTBOMK, no cable manufacturer has actually created a<br>"proper" cable for DVI/HDMI. (SDI is designed to be carried over<br>coaxial wires, but DVI/HDMI uses twisted pair. I don't know of any
<br>source of DVI/HDMI cables using coaxial wires.)<br><br>Mike</blockquote><div><br>Sorry Mike you are 100% wrong. SDI signaling is not the same as DVI or HDMI signaling. TMDS signaling used for DVI and HDMI is designed for twisted pair cabling not coaxial. Using coaxial cables and BNC jacks for a TMDS signal would be absurd. There is no inherent design weakness in the DVI/HDMI cable designs. Also the video part of the HDMI standard is 100% compatible with DVI. So there are no issues when manufacturers make HDMI to DVI cables. The digital signals used in DVI/HDMI are much better suited to longer cable runs then VGA or component signals.
<br clear="all"></div></div><br>-- <br>_____________<br>Ryan Patterson