[time-nuts] What is the best counter for a Time Nuts?

Tom Van Baak tvb at LeapSecond.com
Thu Oct 9 14:54:56 UTC 2008

> Hi Tom, Ulrich,
> can't seem to get 12 digits/s out of my 53132A in frequency mode when doing  
> measurement offset of -10MHz. I only get 11 digits/s for some reason. Have to 
> go  to 10s + gate time to get better resolution.

Correct. When you get "close" to an exact 10 MHz input then
the counter drops down into a "reduced resolution" mode and
you lose a digit (regardless of gate time). If you need, you can
query this with the :DIAG:MEAS:PRES? command. Details are
in the back of the 53132A manual.


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