when you find time measure the wfrm/s with 1k/10k (i assume 10M will be still the same)
and the latest firmware, could be interessting to see if Owon changed something.
No markable difference from 1k to 10M memory.
Maximum is around 38 displayed visible separate captures on the TFT in one second.
(also trig out show same number)
(measured without accuracy, with one Fuji F200EXR 1 second shutter speed.)
This method proofs also that they really are separate drawed to TFT and visible)
Signal was 2,1MHz sinewave sweeped (slowly <1Hz) 6,3kHz deviation. Displayed position far away from trig position.
Shutter open 1s and then counted how many separate captures find in picture.
Later I use different signal generation so I can get better picture.
Also I will littlebit adjust enviroment so that better can use 1 or 2 second shutter speed.
Picture method is good becouse it do not forgive anything and it is not "imagination" with semi theoretical calculus. It is real seen on the TFT.
persistence, measurements and side menu off.
these all reduce this maximum number. Example persistence drops it nearly half.
So , some kind of maximum together with persistence is around 20 drawed displayed captures per second on the screen. Including full 10M.
Tested with one channel in use.
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Update, now get just one short quick tiny test.
Picture is terrible - horrible including also signal but only meaning is count how many captures displayed in second, thats all. With pocket camera shutter speed 1 second and also enviroment lights not best possible, then also ISO3200
becouse want small f
Here littlebit different signal so that counting is more easy.
Whus just this signal and so on. Just becouse it was fastest find with equipments availabe for use so that no need disassemble some special other test systems - configurations (setting system back agen may be one day work, so... it want not do without really heavy reason).
Signal is continuously sweeping so that in picture left it first go littlebit left, then full trawel to right, then folded back more than half screen. (so it looks "random" timing.) This is becouse my slow ramp gen is other place.
Edit: This is perhaps not whole explanation. (Now, with new knowledge I think it was under 1s sweep period but... not so much faster. It is also possible there may occur faster trig and capture periods but they can not rise continuous capture rate and it stay around </= 38wfrm/sSignal is sine. 1.5MHz. Level is so high that it go lot of over. So line is nearly vertical. This 1.5MHz sine deviate +-9kHz (no any reason) then adjusted trigger so much time offset that this deviation in rising edge of sine fills nearly whole screen (time axis).
Camera is set for 1s shutter speed. Horizontally picture is nearly whole screen, vertically cut becouse some backlights due to 1second shutter speed.
Trig out counting also show around 38Hz and there is around 38 waveforms visible on the TFT in this 1s time.
This around 38 is maximum for this scope with 1k to 10 Mega samples memory. .
Menu on, persistence on, mesurements on, they all affect reducing speed.