[time-nuts] Interesting paper: Don't GPSD' your Rb...

[Azelio Boriani]

Sure? Now, this is interesting. Now I'm using the serial port to apply the
correction as it seems that the EFC is 8bit sampled and then applied to the
DAC which drives the C-field, so better directly use the DAC with the Fxx
command. Any clue about the X command? It is undocumented and seems to dump
some variables (among them the coarse and fine tuning values). Moreover it
appears that the Rxx or Lxx commands can read more that only the coarse
(L06) or fine (L0A) tuning values as stated on the manual.

On Fri, May 4, 2012 at 3:21 AM, Angus Macleod <amcl.mail at btinternet.com>wrote:

> Hi,
>
> I never tried the external EFC adjustment on my LPFRS as it's not
> stable enough to waste time on anyway, but I checked with Temex back
> when I got it and was told that the EFC/c-field adjustment was similar
> to the LPRO - no DAC etc.
>
> Regards,
> Angus.
>
>
>
> On Fri, 4 May 2012 00:05:33 +0200, you wrote:
>
> >OK, I've read the paper. Why not GPSDiscipline your Rb? GPSDiscipline "cum
> >grano salis" but do it. My LPFRS GPS disciplinator hardware is ready. OK,
> I
> >know, the 1E-11 step is too large but I'll try. First I'll take
> >measurements so that I can think about a disciplining algorithm. Then a
> >hardware modification on the LPFRS to get access to the C-field could make
> >it better.
>
>