[time-nuts] HP53132A vs SR625

SAIDJACK at aol.com SAIDJACK at aol.com
Sun Mar 17 15:05:05 EDT 2013

the calculation is the same, however the numbers are 100ps for 53132A  
versus 350ps, and I have not seen an average systemic offset being displayed on  
any of the 3x 53132A units I use, and I see one on the SR-620. That's  why 
I sent it into SRS for calibration, paid the $$$ and got it back with the  
same exact offset and a statement that it is operating within specifications 
so  no adjustment is necessary.
HP manages to show zero error on average, with the digits bouncing back and 
 forth. The SRS unit manages to show a hard frequency offset. If I remember 
 correctly the SR-620 even shows this offset with it's own reference 
connected to  the inputs, the HP does not.
In a message dated 3/17/2013 11:26:16 Pacific Daylight Time,  
ed_palmer at sasktel.net writes:

Hi  Said,

That equation looks similar in form to the specs for any counter.  What 
are the comparable equations for the  53132A or the 5370(A or  B)?


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