Hi everyone!
First I'd like to congratulate the members for the excellent work improving the 6022BE's software and documentation!
I don't own one of these scopes yet. However, after reading this thread and using the open software's Demo mode, I think that one of this devices can probably fulfill my specific needs. I already own several Tek CROs and an Owon SDS7102 DSO, but I have an application where I think a low cost PC based scope would be the best choice.
Basically, I would almost exclusively use the 6022BE in XY mode along with a curve tracer. Currently I'm using a dedicated CRO for this purpose, but is bulky, there is no simple way of storing the images in the PC besides taking a photo, and I could put the desk space to better use. The Owon is a better choice, but it's usually in use for something else when I need to use the curve tracer, so it's a pain to move it back and forth. I tried a sound card based PC scope using free software but it can't be calibrated accurately, so I gave up on that idea.
I uploaded some images to illustrate what I want to do and to illustrate the limited testing I did with the Demo mode in an attempt to evaluate how well the 6022BE may be able to do this job.
The first 3 images were obtained with the Owon, first is a sample of the IV curves I normally get from the curve tracer when analyzing a semiconductor, next are the curve tracer's output signals used to calibrate the scope for XY mode use, and last, the XY mode screen produced by these signals when the scope is properly calibrated.
The next 4 images is what I got with the Demo mode as I attempted to simulate the curve tracer's output signals via its options. First are the options I used, the closest thing to the 6 step waveform was a sawtooth. Next is the resulting YT display, here I notice that the waveforms have a negative component even though the minimum voltage was set to 0V. Don't think this will be a problem in my case, I suspect this is just a peculiarity of the way Demo mode is implemented. Next is the XY display after calibrating the 6022's controls for a proper display. Of course, instead of dots there is just the slanted line because the input waveforms don't have steps. The last image is just illustrating a peculiarity I noticed in the 6022BE XY mode when the time base is changed. You would think that the time base wouldn't have any effect on the XY display, but as can be seen here, changing from 10ms to 2ms affects the display quite significantly.
Anyway, I'll appreciate any feedback or insight anyone of you can offer!