On Sat, Dec 01, 2007 at 01:13:00PM -0800, Lan Barnes wrote:
- if you have any noise, consider running a daisy-chain ground wire from your computer case to the ground screw on each splitter and (it it has one) the ground on the TV. Some people have reported getting micro-current potentials between stuff that can cause noise.
Just the other day, I had to resolve a ground-loop hum with my audio. I have a firewire audio interface, and was using the firewire hub in my new monitor. However, any time I had the brighness other than full, there was an annoying hum in the display. Turns out that the firewire shield and the audio ground were causing multiple paths back to ground, inducing very audible sound into the audio. I was able to fix it by just not using the hub in the monitor. With audio, you can use an isolation transformer, but video has a DC component that makes this much harder. If your equipment is near each other and plugged into the same outlets, that will probably help. Connecting extra grounds can help (it can also make things worse). <http://www.epanorama.net/documents/groundloop/video_isolation.html> has a bit of information on some ideas, but there aren't really any good solutions (well, there are some good expensive ones). Dave -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
