[time-nuts] Using 5335 frequency counter for timing

[Jerry Hancock]

I tried reading the 5335 over GPIB.  In the case where I am measuring frequency I get the expected number of digits.  In the case where I am measuring A->B, I only get nanoseconds (e.g 3E-9; or 4E-9).  On my scopes, I was able to measure the delta at 3.28 nanoseconds with both scopes close within .01 nanoseconds.  I was measuring the delta between 1M and 11.5” of RG316 cable.  With a published velocity factor of .695 and 3.28E-9 seconds difference, the delta came out to 27” vs the measured 27.87”.  Of course the RG316 VF wasn’t accurate to the number of digits needed to get any closer.  I was demonstrating the precision of the equipment I was using to my son who is becoming somewhat of a mad scientist like his father.


> On May 7, 2017, at 8:15 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> 
> jerry at hanler.com said:
>> I thought I had seen somewhere where people were getting higher resolution
>> using software along with the 5335, no?
> 
> I don't know about the 5335, but if you talk to a 5334 via GPIB, you can get 
> more digits than fit on the display.
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
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