Which means, after a bit of scrounging for some BNC to SMA adapters, I have some plots worth using (more or less) of my clock!
Background info: my clock's main purpose is to be a GPS-disciplined NTP server on an Arduino Due clone board. As such, accuracy beyond tens to hundreds of microseconds isn't really relevant. But for purely time-nut reasons, it has an Rb oscillator (cheap surplus X72), and for similar reasons it has a PPS output generated by the CPU timer. I didn't hack the Due apart to replace the crystal, so the CPU clock (84MHz) is asynchronous from the Rb, which has some limitations, but also introduces a nice little bit of dither The TICC is set up with 10MHz from a Spectracom NetClock, chA from a (probably insufficiently thermally stabilized) LTE-Lite, and chB from my clock. Output is in Timelab mode. A representative bit of the phase plot: http://i.imgur.com/cRXv9ia.png You can see all the quantization noise on my clock, but also that in the ~100s region, it does better than the LTE-Lite. You can also see the nice smooth (at short time) plot of the LTE-Lite which gives me some good faith in the TICC. ADEV plot so far: http://i.imgur.com/DLb15rt.png Timelab loses the thread a little bit and comes up with negative computed deviations for my clock for some tau. Not sure how much of that is due to instrument limitations, and how much is due to the noise being not-really-independent, since all three clocks are GPS receivers, with rather nearby antennas. Still, more than I've ever seen before! Andrew _______________________________________________ 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.