John Green said:
"The thing that surprised me was how much a TBOLT's [phase] moved around
compared to my Z3801."
That will be the case if you are using the Tbolt's default tuning
values.
ws
*********************
[time-nuts] Measuring frequency difference
John Green wpxs472 at gmail.com
I started out using an oscilloscope and comparing OCXOs to my Z3801 GPSDO.
Later I used it to compare an LPRO 101 to the Z3801 and finally, a TBOLT. I
later acquired a Racal 1992 which makes things a little easier but no more
accurate in my opinion. If you are looking at frequency difference or
frequency drift, and not stability, either of these methods and a stopwatch
will get pretty good results. It took me a couple of days to get an LPRO
adjusted so that I saw one cycle slip every few hours. It takes patience.
The thing that surprised me was how much a TBOLT moved around compared to my
Z3801. Though it stayed within one cycle because it was "phase locked", it
jumped around a good bit while the LPRO just slowly slipped in one direction
or the other.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
