I just bought 2 used Digidesign 192 interfaces with each 16 outputs modules for mixing on console.
Problem is, when I connect both of them (master->slave) the slave starts making cracks and pops. See video from link below.
If I switch master and slave, the same thing happens on the "new" slave. This is spikes only from the hardware, not from Pro Tools or any other software. It starts when PT engages the Interfaces. It keeps going with an interval of about 20sec in 44khz. In 48 it's less then 20 sec and in 96 much less.
Both of them running internal sync, and I can't find a software preference that makes it stop. This is REALLY annoying and ruins everything for me.
Someone who knows what is is or what I can do?
VIDEO LINK: https://dl.dropbox.com/u/14098234/IMG_3232.MOV