Hi There are a number of counters that are a lot better than what you have. There's also a limited amount of money in the universe. I'd suggest setting a rational budget and time frame. This is all used gear. You *might* get a perfect one that never ever breaks. More likely you will need to get a couple and swap things around. I'd plan on buying 3 or 4 with what ever the budget is. If you get lucky, you come in under budget.
Less fancy: 5334 - couple of ns resolution, nice and small, B is *very* different than the A so get one or the other 5335 - faster bigger heavier, one ns resolution. both should be around $100 before shipping. Very cool: 53131 500 ps resolution 53132 150 ps resolution both have displays that can wear out. They are no longer supported by HP so you *might* find somebody dumping them. Hard to find for less than $800. Big and heavy: 5371, 5372 same resolution as the 53132 They don't show up much. I've seen them for $200. You probably should expect to pay $400. Expect shipping to be non-trivial. High end: SR620 5370 53230a All are in the 20 ps range. You do see 5370's for $200. More commonly you see them for quite a bit more. The 620's show up anywhere between $800 and $3000. The 53230a is brand new with a warranty from Agilent for about $3700. That's just one set of parts. There are others. There are more issues than just price to consider. The 5371 is a *big* piece of gear. The 53xxx boxes are all small enough to carry around. Lots of choices. Bob On Jan 8, 2013, at 9:50 PM, dlewis6767 <dlewis6...@austin.rr.com> wrote: > Hi Magnus, ....good day. > > Thanks for the thoughts, ...that was pretty much where I was headed. I think > I will hold out a while for a 5370, ....watch eBay, see if a reasonably > priced unit pops up. > > If anyone has one for sale for a nice price, please let me know. > > -Don > > > > > > > -------------------------------------------------- > From: "Magnus Danielson" <mag...@rubidium.dyndns.org> > Sent: Tuesday, January 08, 2013 7:42 PM > To: <time-nuts@febo.com> > Subject: Re: [time-nuts] Interval Timer Recommendation > >> Hi Don, >> >> On 01/09/2013 02:32 AM, 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. >> >> Of the given set, the HP5370 will have much better single shot resolution >> compared to the HP5371/5372. The later is better at recording high rate >> events. >> >> I have both HP5370 and HP5372 as they fill different purposes. I also have >> counters of better performance than these. >> >> Trouble is, with PPS signals you experience jitter such that a 1 ns >> resolution of a HP5335 will suffice for most usages. >> >> Cheers, >> Magnus >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
