[time-nuts] Re: Neon clock from factory at Motorola years ago

[Robert LaJeunesse]

Lumichron indicates it is a 24V impulse:

https://lumichron.com/wp-content/uploads/Wiring-Diagram-typical-.pdf

But it is not obvious how a 24V impulse would allow the clock to be adjusted to GPS time after power loss. And it seems like a really simplistic impulse per minute according to https://lumichron.com/wp-content/uploads/Specifications-Section-10-74-13-2018.pdf
stating: "Slave-type, hi-torque, impulse-drive, 24v impulse control – shall move only once a minute. "

Looks like they have a newer version using 4 wires:
https://lumichron.com/wp-content/uploads/2019/07/wiring-diagram-tower-clock.pdf

Here is a controller where it states the impulse is bipolar:
https://lumichron.com/the-new-hn-60-and-hn-61-clock-controller-from-mobatime/

Possibly one polarity sets it to 12:00 and the other polarity advances it 1 minute? Don't know myself. Time to experiment with a 24V power supply?

Good Luck!

Bob L.

> Sent: Wednesday, November 23, 2022 at 5:26 PM
> From: "Bill Notfaded via time-nuts" <time-nuts at lists.febo.com>
> To: "Discussion of precise time and frequency measurement" <time-nuts at lists.febo.com>
> Cc: "Bill Notfaded" <notfaded1 at gmail.com>
> Subject: [time-nuts] Re: Neon clock from factory at Motorola years ago
>
> Front picture attached.
> 
> 
> Bill
> 
> On Wed, Nov 23, 2022, 3:03 PM Bill Notfaded <notfaded1 at gmail.com> wrote:
> 
> > So I've got this clock that has white neon around the face.  It has
> > separate 110V plug for the neon but in the factory it was controlled.
> > Attached are some pictures of it.  I'm looking to get it going again.  It's
> > about 2 feet in diameter and they were in multiple factories.
> >
> > The brand is Lumichron.  See the pics.  The control is two wires.  I'm
> > thinking 12V with a coded signal but I'm not sure?
> >
> > Anyone recognize the connector and how you control/power these?
> >
> > It's white neon around the face.  I'll post more pictures of the front
> > later.  This is the timing connector.  The other white cable just powers
> > the neon.
> >
> > Bill
> >
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