Fnirsi 2C53P vs Owon HDS272s AC/DC, pretrigger, pulse, current meas

0:00 AC/DC switch
2:11 pretrigger trick
6:42 fast, rare pulse and afterglow
12:05 Current measurement
20:48 Voltage drop /A meas
Sometimes the channel gets stuck in AC mode, even though it is switched to DC.
I don't know what causes it.
Sometimes I can simply switch back, sometimes I have to restart, sometimes the reset didn't help either.
A few people didn't understand why it's a problem for me that I can't bring the trigger point forward in time.
An example.
When I want to view the signal in better quality, for example 400ms after switching on, I can set the Owon in such a way, taking certain limits into account, that I can see even the last part of the signal.
I only measured that part with the cursor, but since it is the middle of the 8k memory, I was able to capture a total of 1.592ms.
The limitation is that each time base has a maximum time with which you can advance the trigger point, mine is the old V3 version, it is still buggy, you can see in the video that it remained at T500ms in the 50us time base, but in reality it is only T400ms- I was able to bring it forward, I don't know if it was fixed in the new ones.
I tried to show a rare 200us wide pulse, but the Fnirsi couldn't capture it for some reason.
I set it to 20ms, I didn't feel like trying to find the smallest pulse width where Fnirsi still works.
Even if Owon is a bit inaccurate, at least it caught all the signals...
There is a small bug with the afterglow function, you can see that the signal flashes twice, although it only happens once in reality.
Cursor and afterglow do not exist at the same time.
Aftreglow does not detect small signal changes.
Also, what others have shown, if you change the position of the signal in fnirsi, it does not reset the display.
A video has not yet been made about the current measurement bug, so I will present it as well.
I let it rest for a few minutes between measurements..
power supply Owon SPM6103.
For me, the oscilloscope part became the main point, because I don't need the multimeter and signal generator. My Owon has better.
If there was a simple version, I would have bought it.
I haven't tested the rest, because I don't think Fnrisi is so reliable that they have calibrated all their parts, at least at the most basic level.
If you're lucky, you might get one that's more accurate, maybe even worse than mine.
Later, if I feel like it, CH1 and CH2
I will compare.
If anyone has any requests, feel free to ask, I'll be happy to test it if I have the opportunity and the tools to do so.