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.


On 16 September 2016 at 23:55, Bob kb8tq <> wrote:
> Hi
> Most PPS signals these days are very low duty cycle. If you AC couple
them, you can easily be triggering on the wrong edge. With the narrow pulse
it may not be very obvious.
> Bob
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