[time-nuts] Re: New-To-Me HP 5071A Questions

[S McGrath]

The handles are an artifact of the HP series II cabinet all the side panels
are fitted with handle mounts.

On Wed, May 10, 2023 at 11:47 PM paul swed via time-nuts <
time-nuts at lists.febo.com> wrote:

> Stan I don't own a 5071. It sounds like you really did score a heck of a
> nice piece of gear.
> With respect to the batteries if original are available thats the way to
> go. You should have the make and model number on the batteries.
> If not then I firmly believe the same shape, AH, and size SLA will work.
> Also I seem to remember you could connect an external battery. I had a 5071
> here for 3 months a number of years ago. If substituting a battery the new
> ones typically have the float voltage stamped on them or in the spec sheet.
> Just check that the 5071 is operating at the right voltage. To low and
> never fully charges. To high and you heat the battery. Both issues shorten
> life and available current.
> Congrats
> Paul
> WB8TSL
>
> On Wed, May 10, 2023 at 8:58 PM Stan via time-nuts <
> time-nuts at lists.febo.com>
> wrote:
>
> > Hello,
> >
> >
> >
> > I just scored an HP 5071A in excellent condition, and to my amazement it
> > warms up and locks to the cesium as it should. Here are my questions:
> >
> >
> >
> > 1.      What are the ideal values for the various parameters that are
> > displayed on the LCD screen? The Symmetricom manual shows only a range of
> > expected values, with no indication of which values are more desirable
> than
> > others.
> > 2.      Which of these parameters give an indication of the
> > health/remaining
> > life in the cesium tube? The tube is a 10890A, with serial number prefix
> > 3839A.
> > 3.      The SLA batteries in my 5071A are essentially dead. I'm trying to
> > charge them but do not hold out much hope. Are the OEM batteries still
> > available? If not, can I substitute a couple of more generic 12V 2.5AH
> SLA
> > batteries, like the Power-Sonic PS-1220, assuming that they will
> physically
> > fit into the battery box?
> > 4.      For the trivia experts: it appears that there are attach points
> for
> > strap handles on the sides of the 5071A, but I've never seen a photo of
> one
> > with those handles installed. What is the reasoning behind this?
> >
> >
> >
> > Thanks,
> >
> > Stan
> >
> >
> >
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