Roger Johnstone wrote:
In <1152203470.245771.95150@m73g2000cwd.googlegroups.com> jsnospam@ cimmeri.com wrote:
I also lifted the shield ground at the IIgs side. Some debate on this, but in audio at least, we never pass ground through from chassis to chassis to avoid ground loops... especially when another ground is already being passed through (Red Ground).That's a good point. A lot of cables connect the shield straight through, but it's often better not to.
Most times, both the monitor and the computer are plugged into the same AC circuit, and share the same chassis ground. Any potentials developed across the shield resulting from ground currents will be *very* low in comparison to the 1vpp video levels. Audio has a much wider dynamic range, and can therefore be more demanding. -michael Parallel computing for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."