[time-nuts] Phase microsteppers

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Mar 11 01:18:56 EST 2005

In message <4230C2C3.3070508 at pacific.net>, Brooke Clarke writes:

>When I was trying to make a 1 PPS saw tooth corrector for the Motorola 
>GPS receivers I found an IC that was a 1 ns phase shifter and had just 
>enough range to correct the GPS receiver.  I did get it to work but 
>never could figure out how to get around the bug in the saw tooth data.  
>This type of chip would be one way to get down to 1 or using another 
>part number a fraction of a ns time step.  But some other method must be 
>used for finer steps.

The diagram of the PPS input/output in the PRS10 Rb is interesting.

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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