[time-nuts] Updated Shera controller

Ulrich Bangert df6jb at ulrich-bangert.de
Thu Jul 29 07:57:08 UTC 2010


> Uhm, isn't this exactly where you want to use the 
> still-smelling-like-brand-new-car PICTIC II with a good DAC 
> and a microcontroller ?

I guess the PICTIC II is not very good when stop pulses arrive BEFORE start
pulses which is a normal condition if a average time interval of zero
between local pps and GPS pps is the aim.

Ulrich Bangert

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Poul-Henning Kamp
> Gesendet: Mittwoch, 28. Juli 2010 22:47
> An: Discussion of precise time and frequency measurement
> Betreff: Re: [time-nuts] Updated Shera controller
> 
> 
> In message <4C5092FA.2030602 at xtra.co.nz>, Bruce Griffiths writes:
> 
> >Instead of copying the Shera controller albeit with higher resolution
> >its probably more cost effective to choose a microprocessor 
> with built 
> >in time stamping capability.
> 
> Uhm, isn't this exactly where you want to use the 
> still-smelling-like-brand-new-car PICTIC II with a good DAC 
> and a microcontroller ?
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by 
> incompetence.
> 
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