On Fri, Sep 16, 2016 at 4:44 PM, Peter Vince <petervince1...@gmail.com> wrote:
> Can I ask why PPS pulses are so narrow? It makes them difficult to see on > a 'scope, and difficult to detect on a PC. And, as Bob said, far less > obvious if you trigger off the wrong edge. > None of us can guess the original designer's motivation but... I think you answered your own question "far less obvious if you trigger off the wrong edge.". For most cases, except for time nuts, a few microseconds does not matter. So the GPS PPS works almost as good if you invert the signal and trip off the wrong edge. Yes it makes such a mistake hard to find but, I think that was the point. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
