[time-nuts] Datachron, Inc.

Robert Darlington rdarlington at gmail.com
Thu Jun 25 21:24:30 EDT 2009


I'm 99% sure.  What I see on the scope looks like what I see in the spec.
AM modulated signal, but I didn't actually verify the timings yet.  I
figured that even if I was off a bit, that *something* should change on the
display.  Maybe this is a poor assumption.  I'm off to find a jumper...

-Bob

On Thu, Jun 25, 2009 at 7:21 PM, J. Forster <jfor at quik.com> wrote:

> Are you sure you are really feeding it IRIG-B? You might try looking at
> your TC signal with a 'scope and seeing if it meets the IRIG spec.
>
> Such a test would bisect the problem.
>
> FWIW,
> -John
>
> ==========
>
> > Hi guys,
> >
> > What happened to Datachron?  I'm trying to dig up a manual for an IRIG-B
> > display, Datachron model 3700-205 that I just picked up on eBay:
> >
> > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290323873289
> >
> > It came in today and powers up, and looks just like it does in the
> > pictures.  Doesn't seem to do anything more than that, either!   I'm
> > trying
> > to drive it using NMEATime software.  It seems that no matter what
> > amplitude
> > I'm using, the display does nothing.  I reseated all IC chips, wiggled
> > connectors, the standard sort of thing.  No change.   Datachron appears
> to
> > have gone out of business, but I'm hopeful that somebody just bought
> them,
> > changed their name, and has a hidden supply of manuals somewhere.
> >
> > Thanks,
> > Bob, N3XKB
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>
>
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