[time-nuts] Interval Timer Recommendation

Mark Spencer mspencer12345 at yahoo.ca
Wed Jan 9 06:30:12 UTC 2013


Re the price for HP5370's.   I've purchased several HP5370B's over the last few years.    One of the better ones cost me a little over $200.00 plus shipping.  Some sellers still seem to have more reasonable expectations than others but good deals are getting harder to come by.   

If you have not already done so you might also want to review the list archives vis a vis the calibrating a HP5370 series counter. 

Good luck and best regards.

Mark Spencer


> 
> Message: 9
> Date: Tue, 08 Jan 2013 22:39:20 -0600
> From: Ed Palmer <ed_palmer at sasktel.net>
> To: Discussion of precise time and frequency measurement
>     <time-nuts at febo.com>
> Subject: Re: [time-nuts] Interval Timer Recommendation
> Message-ID: <50ECF478.6020801 at sasktel.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> In the past there has been much discussion on this list
> regarding the 
> relative strengths and weaknesses of the 5370 (20ps
> resolution) and the 
> 5371/5372 (150ps resolution) units.  There are other
> units that have 
> even better resolution, but they tend to be pricey and/or
> more specialized.
> 
> Moving down another step in resolution, the Racal-Dana 1991
> and 1992 (1 
> ns resolution) counters also have their fans (like me), but
> they do have 
> problems with their front panel buttons (actually the
> switches under the 
> buttons).
> 
> Yes, the prices on ebay are becoming increasingly
> ridiculous. 
> Occasionally a seller will have an attack of sanity and post
> a 
> reasonable price.  You may also get lucky with a unit
> that is defective, 
> or advertised as such, but has either no fault or a
> repairable one.
> 
> More info on all of these topics is available by using
> Google with the 
> site:www.febo.com advanced search term.
> 
> Ed
> 
> On 1/8/2013 7:32 PM, dlewis6767 wrote:
> > I am looking to upgrade my older HP 5245L counter/
> timer to one with greater resolution.
> >
> > In my home lab, I have been collecting GPS timing
> modules (receivers) and just want to start measuring their
> 1PPS jitter, etc. over one period.
> >
> > The 5245L will only measure to 100ns with a 1 second
> pulse (.1us period at 1 period).
> >
> > I was looking at the HP5370/ 71/ 72 series counter/
> timers.  What is the best resolution they can provide
> for a one second pulse (over one period)?
> >
> > Do you have any recommendation as to which one of the
> three models is the better unit?  (Their display
> technology, age and cost not withstanding.)  All three
> models seem greatly overstated in price on eBay, seems,
> too.   Not sure why, ...just supply and
> demand; I presume.
> >
> > Thank you for your advice; I appreciate your thoughts.
> >
> > Don Lewis
> > Austin, TX (Hyde Park)
> >
> 
> 
> 
> 
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