Hi marmad,
independent from all the other things discussed here, could not follow any comment (seems, my personal update rate is too low
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/wink.gif)
),
did you notice which requirements RIGOL has noted in their technical specs at the end of the manual?
For the DS4000 types they've required a sine of 10MHz, setting the scope to 10ns/DIV ...
Just for fun I've set up the generator & scope according to that data and noticed first, that wfm/s was about 80.000wfm/s. Then I've
noticed that they required to switch off interpolation, i.e. using "dots mode" for the display - result: the counter jumped to 115.000 wfm/s.
Logical that the drawing of connections between the samples may slow down the wfm/s, but didn't think about it before. So if maximum wfm/s
is required makes sense to switch off interpolation. Would say, that then the higher sample rate of 4GS/s makes sense also for a scope of 100MHz
bandwidth. There's not really more information, but you get more samples and the trace looks more continuously even with interpolation off
as with a scope for instance of 200MS/s, especially when zooming in.
But maybe you've done this test already and you're knowing about this details. Didn't notice that before, your video REVIEW of the DS2000
and measuring the wfm/s with the counter brought me to that. Seems to be interesting, that this test can't done with the Hameg HMO, its trigger
ouput is exactly the trigger of the signal, not the wfm/s.
Kind rgds,
Gunb