> I'm also interested in this. I've got one of these and a 53131A and > am still learning the ins and outs of ADEV measurements with timelab. > I was not aware of the 5/10MHz shortcomings of the 53131A that were > discussed this weekend.. > > Brent
To be fair, HP/Agilent did not hide this fact, but I agree it is buried rather deep in the 53131A/53132A manual. The new series (e.g., 53230A) has a similar issue. There's a wonderful paper by Robert Leiby about this design artifact: "... Frequency Error near the Reference Frequency Harmonics" http://cp.literature.agilent.com/litweb/pdf/5990-9189EN.pdf This is no reason not to use a frequency counter in the lab. It simply explains why this class of counter works amazingly well at arbitrary frequencies and not quite as well right around magic numbers like 5 or 10 MHz. /tvb _______________________________________________ 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.
