[time-nuts] Even Seconds Pulse option (1PP2S), HP 58503B

[paul swed]

On second thought (Pun intended)
Its a pendulum clock output. Have no idea why some one would use a GPSDO to
drive a pendulum clock but that could be a reason for such a thing.
Paul

On Sun, Sep 29, 2019 at 12:02 PM Dana Whitlow <k8yumdoober at gmail.com> wrote:

> I can't speak for 1/2PPS, but at the Arecibo Observatory we distributed
> 1PPS with every
> 10th second's pulse stretched to about twice the duration of the others.  I
> did find that to
> be kind of handy every now and then, when troubleshooting things.
>
> Dana
>
>
> On Sun, Sep 29, 2019 at 8:36 AM Gregory Beat via time-nuts <
> time-nuts at lists.febo.com> wrote:
>
> > A new resident arrived at the “Time Cave” this weekend, the
> HP/Symmetricom
> > 58503B.  Just the plain front panel (4 LEDs) model, without Option 1 (VFD
> > clock display).
> > Acquired in USA, cheaper than current Asian exporter.
> > https://accusrc.com/uploads/datasheets/4975_58503b.pdf
> >
> > Supposedly stored in a closet since 2010 (verified by its diagnostic
> > logs), the unit only had 2,000 hours of operation.
> > Today, it happily has a GPS Lock and is currently “re-learning” where the
> > 1 PPS and 10 MHz outputs wandered (taming Lazarus).
> > —
> > One surprise, it has Option 2 (1PP2S) installed on its Rear Panel.
> >
> > Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting
> a
> > pulse every other second, synchronized to the even seconds in GPS time.
> > Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.).
> > ===
> > QUESTION:
> > What Specific Applications would use this 1PP2S output regularly??
> >
> > greg
> >
> > Sent from iPhone 6s
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