Hi, just for your information.
I had informed OWON about some bugs.
Today I surprisingly got a patch for testing by mail.
It is a V8.1.0
At the weekend I will test the Issues.
After that I will ask them when this will be released or if it is allowed to distribute it here.
I had communicated that:
HDS242
SN: 224xxxxx
FW: V8.0.1 (The firmware 8.0.1 is not downloadable)
HW: V3.2
1: Oscilloscope: IF timebases >= 100ms (HOR M:>=100ms):
- and trigger = "AUTO", then the indicators (Vmax,Vmin;V...) do not work.
- "Vmin", "Vmax" are =0 or old values determined at <100ms / Div (HOR M:<100ms).
- Indicator "V" is extremely low-pass filtered.
2: Oscilloscope: The refresh time for triggers with large time bases (e.G. >500ms/div) appears very high.
The graph should be able to immediately and continuously map the current sample memory during each trigger event.
- Example: 1kHz int. generator with M:1.0s (1s/div) & PeakDetect & "trigger norm" measured. The update takes many seconds. If input signal is disconnected (= 0), and "force Trigger" is pressed to clear the screen, then it also takes a long time until a correct display occurs.
3: Oscilloscope: Sometimes the unit boots in update mode and loses all settings (starts in Language Setting Chinese). The behaviour is not reproducible and occurs sporadically.
4: DMM: some special (exactly these) voltages are not measurable:
Video 1: DC 0.8295V @ 0:03, 0:10
-display: no value, only unit, range toggles to manual 750V
Video 2: DC 1.9V @ 0:02.
-display in slow motion: 01.905 > 01.902 > 0.1902 > 0.0000 > 1.8818
Video 3: DC 3.3338V @ 0:06, 0:12
-display: no value, only unit , range Auto toggles to 200mA :-)
video 1:
https://youtu.be/xyMOSaZzW-Ivideo 2:
https://youtu.be/mBMdQJZUshMvideo 3:
https://youtu.be/iKFCh6nLZyQusers in forums report this issue for different models eg.
me: hds242 v8.0.1
others: HDS272S, V3.3.3, S2128xxx; HDS2202 (V 1.2.0)