Hi all, I ran some tests on a new 53230A counter that just arrived: http://www.anderswallin.net/2015/04/keysight-53230a-noise-floor-test/
The time-interval single-shot noise and resulting ADEV seems easy enough to explain. I didn't yet have time to look closely at Enrico Rubiola's notes over here: http://rubiola.org/pdf-slides/2012T-IFCS-Counters.pdf There is probably a good explanation for the ADEV-level in standard (pi-counting?) reciprocal frequency counter mode as well as the roughly 1/sqrt(10) enhancement in ADEV when increasing the gate-time 10-fold. on another note: The discussion on phase-noise <-> ADEV calculations earlier was interesting. Datasets (synthetic or real) with known correct ADEVs and phase-noise-spectra would be a good addition to allantools and a motivation to add code for the phase-noise <-> ADEV conversion. cheers, Anders _______________________________________________ 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.
