"Ryan Malayter" <malayter at gmail.com> wrote in message news:5d7f07420810261009i23334bc8q7c8c2cfaf7f47ec0 at mail.gmail.com... > [...] Or does the PPS signal not depend > on the serial baud rate? It's generally rigged to trigger an interrupt in the receiving machine. Groetjes, Maarten Wiltink