Hi Bob
RRR.
In fact all my original GPSDOs in the '90s were FLLs, for radio comms
gear, essentially frequency counters with the error driving a PI loop.
They were controlling standard XOs. For new engineers, if they want a
project to teach them many skills, I recommend a GPSDO project from
From: Hal Murray
[]
time-nuts@lists.febo.com said:
Where is the Windows version, please, and does it support the PPS and
loopback PPS drivers?
There is no Windows version.
The code is mostly clean POSIX. If anybody is familiar with running
POSIX/Unix code on Windows, please poke me off list.
Hi
If you want to use the OCXO stand alone, you can tune it closer. If it’s part
of a GPSDO, your
only alternative is to rewrite the firmware in the unit. 1x10^-12 is about as
good as it gets frequency
wise on a GPSDO so there isn’t a lot of “hope” if you do dive into the code.
Bob
> On Jun
time-nuts@lists.febo.com said:
> Where is the Windows version, please, and does it support the PPS and
> loopback PPS drivers?
There is no Windows version.
The code is mostly clean POSIX. If anybody is familiar with running
POSIX/Unix code on Windows, please poke me off list.
--
These
I have an Oscilloquartz 8663-XS DOCXO in a generic eBay GPSDO. I would
like to fine tune the output to get it a little closer to MHz.
At current it appears to be running at 9.93x10^-13 at t1000. I'm
clocking it against a PRS10C RFS using a TICC and TimeLab. Specifically
I'm looking for the
On 6/24/19 11:33 PM, Poul-Henning Kamp wrote:
In message <89d7213a-30a8-de38-a150-fc22ec733...@earthlink.net>, jimlux writes:
and, as well, COSMIC-2 is being deployed - 6 satellites each carrying a
fancy GPS receiver that does two things: Precision Orbit Determination
(POD) using a
Hi
In a GPSDO, an FLL can be done with no “cycle slips” between readings. In that
case, the I term will indeed
correct for long term errors. The net result will be effectively the same as a
PLL for long term error. That is by
no means to say that *all* FLL’s are done this way. Only that it is
