[ntp:questions] Re: 1pps signal,20us width

David Schwartz davids at webmaster.com
Wed Nov 3 09:01:23 UTC 2004

"Fei Wu" <fxw115 at yahoo.com> wrote in message 
news:mailman.5.1099468427.537.questions at lists.ntp.isc.org...

> I remember I have seen the similar question before in
> this list, but I can only get around 200 posted emails
> by using email newsgroup. Appreciate if anyone can
> tell me how to check all the emails.
> I have a time server with 1pps output. The width of
> the pulse is around 20us. I know generally people will
> use a gadget box to enlarge the pulse to around 100us
> to fit 1bit as 9600bps com port.
> Is it possible for me to set the bit rate to 56K? So
> 20us pulse can be treat as one bit width; therefore,
> ntp can lock the edge of pulse?

    What are you planning to connect the PPS pulse to? What operating 


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