Nigel,
you can easily divide the 16.384MHz by 16.384 (2^14) to get 1 kHz for
phase locking a 10 MHz oscillator with your GPS box.
Adrian
gandal...@aol.com schrieb:
Not "every" GPSDO has a 10MHz OCXO.
5MHz is, or was, quite common, and I've come across at least one GPSDO
with a 10MHz output that I assumed would use a 10MHz OCXO but that also turned
out to be based on a 5MHz unit.
Then there's the variant of the Trak Microwave 8821B, as just one example,
that uses a 16.384MHz OCXO from which they derive a 2.048MHz output
without 10MHz anywhere in sight.
When I bought one of those a few years ago I assumed that all 8821Bs would
be 10MHz GPSDOs, or some nice round figure anyway, and it never even
occured to me to ask whether it might be otherwise, which in this particular
instance turned out to be a rather expensive mistake:-)
regards
Nigel
GM8PZR
In a message dated 21/08/2012 09:39:09 GMT Daylight Time,
azelio.bori...@screen.it writes:
Every GPSDO has only one 10MHz signal: the one coming from the OCXO. If
there are many outputs they must always be the same. When the GPS has the
3D fix (or the position hold) and the algorithm has synchronized the OCXO,
the 10MHz can be said "locked" but, when speaking about GPSDO, the correct
word should be "disciplined". Yes, maybe there are NCOs and/or synthesizers
to put out different synchronized frequencies and signals based on the
OCXO
10MHz.
On Tue, Aug 21, 2012 at 1:14 AM, Jerry <jster...@att.net> wrote:
In ZL1BPU's GPSR-A User Manual, it mentions that there are internal
points
that provide access to regenerated system 1pps, 10MHz and 19.6608MHz
square
wave signals which are present even before the system is locked. After
GPZ
lock is the internal 10Mhz SMA connector output identical to 10MHz sine
wave
reference available from the rear coaxial connector block?
Jerry
K1JOS
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
