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Edited by xyz at 2018-1-18 15:08
Hi, here are some bugs that i found. My device info:
1. Adjust mem depth to >4K, in my case 64K. Set trigger to auto mode. Take a single shot of any waveform or just use run/stop. Turn horisontal position left and right to see waveform behind the screen. When trigger is set to auto mode waveform displays correctly from memory (pic. 1). Now switch trigger to normal mode and use horisontal position again. The waveform is cutted (pic. 2).
2. Set trigger to auto mode. Set time base to some large value, for example 500us. Take a single shot of any waveform (pic. 1). Decrease time base, in my case to 1us (pic. 2). You can see some line drawing issue. When one of line points is out of the screen, the line is not drawn. Drawing algorithm could use some interpolation to calculate missing point at x1 = 0 and x2 = screen width, and then draw line normally.
3. Using stopped waveform from previous point, change trigger to normal mode. Decrease time base to <=50us. Waveform is displayed incorrectly (pic. 1, 2).
4. Connect probe to device internal 1kHz generator. Set time base to 50ns, and set trigger to auto mode. Use single button (pic. 1). Then decrease time base to 20ns and use single button again (pic. 2), and so on (pic. 3)... See the waveform.
5. Set trigger to normal mode. Set time base <=20ns. Use single button. Horisontal position and time base controls are not working.
There are some other issues, but they probably exist due to problems that i listed above.
Also mem depth (sampling frequency) usage is kind different that i found in devices of other manufacturers (Rigol for example).
Now i have to force trigger on some detail that i want to see, and then eventualy zoom out to see the rest (using complete 64K mem).
It would be nice if i could do it in opposite way... I mean, that 64K mem was displayd default on entire screen width (without scrolling).
Then i could force trigger on some general data (usart frame for example), and then zoom in to see the details (using max sampling fequency available at current time base).
Hope to see some bug fixes soon...
Thank You.
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