[time-nuts] HP 5335A Question
magnus at rubidium.se
Tue Oct 31 13:17:23 EDT 2017
The HP5335A with it’s about 1 ns single-shot resolution is with 9 digits at 1 s. The beauty of it is how you just turn a knob to balance read-out speed vs. resolution. It remains one of the user-friendliest counters I’ve worked with.
The averaging allows to extend beyond the time-base length, but that’s where I prefer to move over to TimeLab instead.
> On 31 Oct 2017, at 16:57, Bob kb8tq <kb8tq at n1k.org> wrote:
> One of the most user friendly ways to get a 5334 or 5335 to display max resolution
> is to put in into a math function mode. Subtract out the nominal center frequency of
> the source and just look at the “delta” from that center.
> Regardless of the tricks, these counters will not give you 12 real digits in a second.
> They are only able to get to 9 digits (or slightly less) in a second. Extend the gate time
> past a point and they overflow internally. You can still get data out, it takes some thought
> to make sense of it.
>> On Oct 31, 2017, at 2:12 AM, Hal Murray <hmurray at megapathdsl.net> wrote:
>> rchrdm at earthlink.net said:
>>> There is mention in the manual that the counter can display 11 or 12 digits
>>> (in addition to the two Exponent digits). I presently have it displaying
>>> nine digits.
>> I have a 5334A, no 5335.
>> As Jeff said, you get more digits with a longer gate time.
>> If you make the gate time long enough on a 5334A, you can get more digits via
>> HPIB than fit on the screen.
>> These are my opinions. I hate spam.
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