Erik,
What you describe is a classic problem. Especially oven controlled
oscillators will have GND and VCC issues.
I recommend you to look att both frequency and phase deviation plots.
Systematics like these is mangled up in a ADEV plot.
Regardless of what isuse you really had, I hope you learned a bunch from
all the different comments. A failure you learn from is not a failure,
it's an experience. A failure you do not learn from, is the real failure.
Keep going!
Cheers,
Magnus
On 2022-02-19 21:18, Erik Kaashoek wrote:
Magnus, others
My previous mail was not very clear but the jumping problem was solved.
It was not caused by the TCXO but by small current fluctuations in the TCXO
causing small VCC fluctuations causing feedback into he Vtune input because
the Vtune was derived from the VCC.
I just did not realize how sensitive the Vtune input was.
Thanks again for the feedback as now I realize I need to check if there is
not a synthesizer inside that is being set when changing Vtune or
temperature causing unwanted clicks or steps. Can this be tested by using a
slow small sweep on Vtune and check with timelab is there are no jumps in
the sweep?
Or is it better to analize a high harmonic of the 10MHz on a SA?
_______________________________________________
time-nuts mailing list -- [email protected] -- To unsubscribe send an
email to [email protected]
To unsubscribe, go to and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected] -- To unsubscribe send an
email to [email protected]
To unsubscribe, go to and follow the instructions there.
