> Important note: there's known to be a lot of variability among these > units, so my sample size of one or two each isn't a guarantee that your > unit will perform similarly.
Neat. Your FE-5680 noise plots look just like the ones I took. Seems clear that this particular variant was meant for timing or calibration work rather than communications. > Next step is to do some longer-term stability measurements (out to 100K > seconds). You may see that data in a month or so. How's the environment where you're running the long-term test? Any exposure to HVAC circulation or any other sources of changing temperature? I've taken a few longer-term plots with the LPRO, but I've always suspected it could do better if it were actively temperature-stabilized, or at least shielded from room air currents. New page with my short-term plots here: http://www.ke5fx.com/rb.htm (These include HP 5065A, LPRO-101, SRS PRS10, and FE-5680A) -- john, KE5FX _______________________________________________ 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.
