[time-nuts] HP 5360A History?

[paul swed]

Amazing more then 2 people know what a 5360 is. More that they still work.
I would say the most interesting thing that I did was measure the color
subcarrier phase shift on Geo-synchrounous satellites. This represented the
drift of the satellite. I knew the references only to well and they were
Cesium at the origination site on the CBS network. I captured and processed
the readings over many weeks and slowly but surely the expected orbital
behaviors showed up.
This was Xerox-820 and apple II time frame.
I could easily see how you might expand what the system could do. Just no
real need.
So the 5360 is about as close as I will ever get to the HP calculators.
Though I have looked for many years.
Regards
Paul
WB8TSL

On Wed, Apr 13, 2016 at 6:43 PM, Pete Lancashire <pete at petelancashire.com>
wrote:

> Tom
>
> Add to your list
>
>
> 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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