From: "Christopher Hoover" <[EMAIL PROTECTED]> Subject: [time-nuts] RE: phase locking Rb to GPS (was time-nuts Digest, Vol 14, Issue 30) Date: Sun, 18 Sep 2005 11:40:36 -0700 Message-ID: <[EMAIL PROTECTED]>
> > On 9/18 "Tom Clark, W3IWI" <[EMAIL PROTECTED]> wrote: > > The frequency knob that you tweak to correct the Rb frequency > passes some tens of ma thru a coil surrounding the RF interaction > region. If you try to phase lock a Rb to GPS, you need to develop > a current source error signal. > > Hmmm ... can you say more about this current source error signal? > > I've been thinking of locking my Rb standard to GPS. I was simply going to > use the same circuit (1 pps, 10 MHz in; analog EFC voltage out) that I have > running with my OXCO but with different filter and EFC DAC coefficients. > > So is this not sufficient to phase lock GPS to a Rb standard? In practice you usually see a voltage input on Rb standard. I have one on mine, it is directly converted into current which drives the C-field coil. Cheers, Magnus _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
