[time-nuts] Interval Timer Recommendation

Bob Camp lists at rtty.us
Fri Jan 11 01:48:39 UTC 2013


HI

One thing missing from the list was the HP 53181. It's useless as a timing device and thus didn't get listed. If you are after frequency only, they occasionally show up for quite a bit less than the 53131's. As a frequency counter, they have the same performance as a '131. All of the 53131, 132, 181, and 230's are small enough to lug around.

Bob

On Jan 10, 2013, at 7:03 PM, Jonatan Walck <jwalck at netnod.se> wrote:

> On 2013-01-10 23:14, Azelio Boriani wrote:
>> Yes, the battery on the PM6681 is a real problem, unless you have
>> the unobtainable calibration program. The program uses the GPIB to
>> perform the calibration: I have tried to figure out the GPIB
>> commands involved in the calibration process by looking at the
>> firmware dump... the commands are clear text. I wasn't able to find
>> anything.
> 
> I did read about the battery before, but did not know how severe the
> problem was. Thanks for the heads up! Does the PM6685 end up in the same
> category as 80 or 81 in this respect?
> 
> 
> I want to send a thank you to everyone participating on this thread, I'm
> sure I'm not alone looking for a (or another) time-nut friendly TIC.
> Finding one that's, "good enough" electrially (all parameters up to
> desired specs), user friendly, not humongous and affordable was harder
> than I initially thought it would be.
> 
> So far I've seen the Racal-Dana 1991/1992, horde of HP/Agilents and
> Philips/Fluke/Pendulum CNT-/PM66* mentioned here. Keeping a searching
> eye out for one that isn't 19" and doesn't weight too much given the
> frequency of which I will lug it around. Or failing that cheap enough
> to double up.:)
> 
> To me this so far means I'm primairly looking for Racal-Dana's as a
> cheap option or possibly PM66's if I can find them (much rarer here, but
> I like that they're made in Sweden!:). Are there any HP's I should keep
> a look out for, if I'm aiming for at least 1 ns resolution? Bob's list
> (a special thanks to you for the comprehensive list) left me with only
> finding either very expensive or very big ones in Europe.
> 
> 
> Any recommendations for where to look for timing equipment (TICs
> specifically but I guess it will be the same answer in general) in
> Europe besides the one all so familiar auction site? (Not that I have
> anything against ebay, just checking if there are any secondary sources.)
> 
> // jwalck
> 
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