[time-nuts] 5370B stop port has died

Jim Palfreyman jim77742 at gmail.com
Mon Oct 20 04:20:54 UTC 2014


The last thing I had connected was the 1PPS output from a 5065A rubidium. I
had the 5370B on 1 Megohm (I never use the internal 50 Ohm termination
because of the risk of damage) so I assumed it would be fine.

I've done this heaps of times before too.

Jim Palfreyman


On 20 October 2014 12:10, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> One of the classic ways to kill most of the 53xx boxes is to put a DC
> voltage on the input with the attenuator set to zero. 5335’s very much did
> not like a 5V level on the input. I spent more money replacing front end
> boards than I did on the counters when we bought them. I never looked to
> see if the 5370 shared that “feature” or not. I also never tried
> overloading mine.
>
> Bob
>
> > On Oct 19, 2014, at 8:49 PM, Jim Palfreyman <jim77742 at gmail.com> wrote:
> >
> > My Stop port has just stopped working. The light is on all the time.
> >
> > I installed the Beaglebone CPU a few months back. Is there a chance it
> > could be a software issue causing it?
> >
> > (I will re-install the original CPU to test - but I was wondering if
> anyone
> > else had a similar problem.)
> >
> > Jim Palfreyman
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