At 12:20 AM 6/12/99 -0400, you wrote: > >Some brands of watch crystals works well, others hardly at all in a specific >application. There seems to be two >types of cylindrical cans. By some reasons, larger cans seems easier to get >moving than smaller cans (but some surface mount crystals are fine!). Hans, I've been trying to use the Epson C-002x parts (Digikey SE3202) at 20 PPM. Do you have part numbers for the little cans that work, and don't? Unfortunately, your little diagram didn't come across clearly--different tab stops maybe? Please verify that you are using a 33K resistor in series with osc0, and that the 47pF cap is off of osc1. Thanks, Kelly **************************************************************************** ******** All legitimate attachments to this email will be clearly identified in the text. William K. Borsum, P.E. OEM Dataloggers and Instrumentation Systems &