Mark E. Skeels wrote: > Interesting you should mention that. I noticed if I left one channel > disconnected there would be crosstalk across channels in the cable, > but > when both sources were connected, it went away. That makes sense, since the unconnected channel was at higher impedance then. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .