Dieter wrote:
You need to be able to *capture* the data in real time, in order to
do a single sweep mode, for non-periodic signals. The processing and
display of that data don't have to be real time.
Yes, that is true for some applications, but unless this is a real time
spectrum analyzer ($$$$) -- which is useful for some applications such
as looking for noise and intermittent distortion -- you are going to be
working with a stable periodic wave form.
That was in reply to:
To be more specific,
a digital oscilloscope displays a periodic signal on the screen and the
refresh scans rather slowly from left to right.
Single sweep mode is a very useful, often essential, feature for an
oscilloscope.
Yes, a one shot scope is a useful device. With analog this was a scope
with a storage CRT. With digital this requires a very fast flash ADC
(perhaps more than one). I think that this is going to be rather
expensive compared to a scanning type D-scope for stable AC signals.
The nice feature of one shot D-scopes is that they can record a lot more
data than an analog one -- you can record a lot more data than will fit
on the screen at once.
--
JRT
_______________________________________________
Open-graphics mailing list
[email protected]
http://lists.duskglow.com/mailman/listinfo/open-graphics
List service provided by Duskglow Consulting, LLC (www.duskglow.com)
