[time-nuts] HP53131A RS232 question
scott.j.stobbe at gmail.com
Sat Dec 3 14:01:54 EST 2016
Well, that's only true if your counter has zero dead-time... I know you
know this, 1 second gate time will give slightly less than 1 Sa/S.
On Fri, Dec 2, 2016 at 1:15 PM, Bob Camp <kb8tq at n1k.org> wrote:
> With a 1 second gate time, you will get one data output per second with the
> settings you have described. I suspect there is something else wrong with
> setup. The same settings will work for 1 pps and give you one reading
> per second. The input level should have no impact as long as it will
> trigger the counter.
> > On Dec 2, 2016, at 12:54 PM, <cdelect at juno.com> <cdelect at juno.com>
> > Hi,
> > I have not played with my 53131A RS232 for a couple years and have a
> > question.
> > I want to configure it to "talk" to Hyperterminal so I can log some
> > readings.
> > I did the 5 items to configure it:
> > HW pacing (disabled)
> > print on
> > baud rate (19200)
> > parity
> > SW pacing (none)
> > with a 5Mhz input I only get data sent about once every 3 seconds, I
> > thought with a 1 second gate I'd get an output measurement every
> > second?
> > I would think there is plenty of time to output the first measurement
> > before the next one is read!
> > Actual setup I'm wanting to do is time interval (at a 1PPS rate) and log
> > the results.
> > I remember I had it working once and it would be OK as long as I did not
> > exceed around 80% of full scale.
> > If that happened I would only get an output logged every other second.
> > I can live with that part but need to get back to it working below around
> > 80%.
> > Any advice is most welcome!
> > I'm going to configure for the TI and <80% and see what happens.
> > Cheers,
> > Corby
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