[time-nuts] Best counter setting for ADEV?

[Tom Van Baak]

> I was wondering why the resolution in TI mode is so much limited, since 
> I never had any problems measuring 5 or 10 MHz frequencies with up to 12 
> figures on that counter.

If you look closely you'll see that the 53132A resolution drops by a factor of ten (to 11 digits per second) when then input is too near 5 or 10 MHz. There's a note on page 185 of the user manual:
http://cp.literature.agilent.com/litweb/pdf/53131-90055.pdf

/tvb