[time-nuts] HP 5360A History?

Pete Lancashire pete at petelancashire.com
Wed Apr 13 22:43:21 UTC 2016


Tom

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http://www.hp.com/hpinfo/abouthp/histnfacts/publications/measure/pdf/1969_06.pdf



On Wed, Apr 13, 2016 at 12:57 PM, Tom Van Baak <tvb at leapsecond.com> wrote:

> John,
>
> I agree with Paul, an absolutely amazing instrument. The early models have
> nixie display, later ones plasma. 11 digits! In 1969! It was the first hp
> instrument that was capable enough to compute stability statistics. In
> real-time! Like Paul I have a couple, along with various the accessories.
> Built like a tank, even the keyboard.
>
> You'll find mention of the counter in old technical articles, sometimes
> including the programs people would write for automated statistics. I've
> always thought the 5360 was uniquely at the cross-roads between hp as an
> instrument company and hp as a computer company (not to mention hp as a
> printer ink company). You can see the DNA of each of these in the 5360 &
> its accessories.
>
> You were probably reading this major 5360A Computing Counter issue:
>
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1969-05.pdf
>
> Here's all about the 5375A keyboard:
>
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1970-03.pdf
>
> And this is where the diode and punch card interface is shown, as well as
> ADEV from 1 us to 1 s (see page 4, fig 4).
>
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1970-12.pdf
>
> More on ADEV on the 5360:
>
> http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1971-11.pdf
>
> Select high-res page scans from my own hardcopy HPJ collection are here:
>
> http://www.leapsecond.com/hpj/
>
> For example, the 79-step ADEV program is here:
>
> http://www.leapsecond.com/hpj/v22n4/v22n4p10.jpg
>
> Finally, do not miss HP AN116 "Precision Frequency Measurements":
>
> http://www.hpmemoryproject.org/an/pdf/an_116.pdf
>
> /tvb
>
> ----- Original Message -----
> From: "John Ackermann N8UR" <jra at febo.com>
> To: <time-nuts at febo.com>
> Sent: Wednesday, April 13, 2016 9:38 AM
> Subject: [time-nuts] HP 5360A History?
>
>
> >I was browsing through the HP Journal archives and came across the May,
> > 1969 issue, dedicated to the new 5360A Computing Counter -- "An
> > Electronic Counter for the 1970s!"
> >
> > I don't recall hearing much about these in time-nuts lore.  I can guess
> > from the Journal articles that it was a beast to keep running and was
> > very expensive (500 ICs and a 10A 5V power supply).
> >
> > Is anyone here familiar with the story of this product?
> >
> > John
>
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