I use a Kramer VP-435 scaler to take VGA input from a computer and scale it to 720p for input into the ATEM. We work in a variety of venues and thus have to take a feed from a variety of computers. My approach is to either use the VGA feed from the computer, or if they use HDMI to convert the HDMI output to VGA and then use the VGA. In the case of VGA out from the computer I use one of 2 powered VGA splitters to split the signal between their projector and my switcher.
The 2 VGA splitters I have are:
- A very cheap IOGEAR splitter -
http://www.iogear.com/product/GVS92/- A less cheap KanexPro 1:2 splitter -
http://www.kanexpro.com/item/?id=VGA1X2SPMost of the time we end up with a 100' run of VGA cable between the splitter and the scaler, and most of the time everything works just fine. But on a couple of occasions the scaler has failed to 'see' the VGA signal at all.
I know there are a myriad of computers and graphics cards so it's hard to say precisely what is happening on any one configuration, but I'm wondering if I would reduce or eliminate these issues if I had a better VGA D/A. And if that is the case, what would folks recommend? For example, I am looking at the Kramer VP-200AK -
http://www.kramerelectronics.com/produc ... 392&sf=8#1