Another DSO+DMM - Zeeweii DSO3D12, claimed 120MHz/250MSps (june 2023)

[BillyO]

Have you tried setting the horizontal time base on the DSO3D12 to 5ms/div?

Also, how is the KMOON set up?

Is the coupling AC or DC?
What about the trigger - AC or DC?

[motoge]

  Any advice would be appreciated
It's from an old photo．
I measured at 500μS but the data is not displayed.
It seems that the manufacturer is aware of the problem with the pulse width measurement.


500μs.JPG is  DSO3D12    AC???

T - 22.0ms.JPG  is DSO120M DC?


アドバイスありがとうございます
過去の写真からです
500μSで測定しましたがデーター表示されません
パルス幅測定の不具合はメーカーも把握している感じです

[motoge]

The current version of DSO3D12 is V3.05.
I look forward to the next firmware



現在DSO3D12のバージョンはV3.05です
次回ファームウェアに期待します。

[spikey1973]

I think one of these is on my "new toy" waiting list now. It seems ideal for Arduino club.

For somebody on a budget that's just starting with nothing this is amazing value for money.

If you gave a kid one of these and some Arduino stuff you probably wouldn't see them for six months.

Forbeing a newbee from the not arduino but similar stuff club, that just recieved his aneng/zoyt zt703 scopemeter and has already decided to ship it back.
Is there any argument I should not buy this, when looking for a fairly function budget (2-channel) scope?

or any other suggestions?

Kind greatz

Matthieu

[spikey1973]

A quick question: does the (newest) firmware DSO3D12 support 100X probes? or only 1x and 10x?

Kind greats

Matthieu.

[cte]

100x probe is supported.

[BillyO]

As cte said, 100X probes are supported.

[spikey1973]

Ah thank you all, that is great to hear

[_RUS73_]

Hi! What function does the key combination shift + V(ch2) activate? The beam becomes thinner and changes color to blue-green.

[BillyO]

Hi! What function does the key combination shift + V(ch2) activate? The beam becomes thinner and changes color to blue-green.

It does nothing on mine.  What firmware version are you on?

[_RUS73_]

v3.0.5_III

[BillyO]

Hmm, same here but I get nothing with the key combination.

[Fungus]

Forbeing a newbee from the not arduino but similar stuff club, that just recieved his aneng/zoyt zt703 scopemeter and has already decided to ship it back.
Is there any argument I should not buy this, when looking for a fairly function budget (2-channel) scope?

I can't think of one.

The only "issue" is the aliasing when you go above the limits but that's an issue with all these 'scopes. Aliasing isn't a design flaw, it's inherent in the math.

(Desktop 'scopes also alias but you have to try harder to see it, I can get my 200MHz 'scope to alias on the 1kHz probe compensation signal if I mess with the settings badly enough)

The 'scope on this Zeeweii is a lot easier to use than others I've tried simply because it has more buttons for all the functions.

I'm really thinking of the whole package though - this is a 'scope with a decent multimeter and a signal generator.

Just don't use it on industrial power installations.

[_RUS73_]

Got it a bit figured out. It looks like a color display of frequencies. Probably an experimental function. Too bad I don't have the ability to send a signal with amplitude modulation.

[cte]

Got it a bit figured out. It looks like a color display of frequencies. Probably an experimental function. Too bad I don't have the ability to send a signal with amplitude modulation.

This looks like some kind of persistence mode / phosphor emulation to me. But it's not the same as the persistence mode found in the menu (in fact, enabling both just seems to blank the signal on screen).

[Update]: Quick video demonstration added

[Fungus]

Interesting. Looks like some sort of a heat map mode.

[BillyO]

Okay, I was pressing shift and the V(ch2) key at the same time, not in sequence.  Now that I see that video It works on mine too.

[spikey1973]

Hmmm so interesting all this functions that are not in the Manual, keeps us digging for more hidden gems. Well i say us, its not like I found anything functional. But i did find something that I can't seem to get rid off.

I recieved my DSO3D12 today, and ofcourse I went out to play with it as any kid would do. But now a red line appeared in the middle of my screen. I believe it appeared when I was trying out functions, but the yellow Ch1 line covers it up most of the time. So i am not sure what i exactly did for this to appear.or when. I so feel like my mum playing with her phone. Stuff happening out of nowhere and not knowing how to get rid of it. Will being 80+ like this? Having absolutely no idea how to use the home teleportation device and still trying to walk to the supermarket?

Anyway. It seems like something 'signally' as there is some 'static' appearance. Like with Ch1 and Ch2. Btw my channel two is blue so, so it's not just a new hidden colour.

Anyway doesn anyone have any idea what i did, to get that too appear? Or whas it there all the time and did i just not notice?

Anyway. I would love some help on the topic.

Kind greats
Matthieu

[black6host]

@Matthieu

There is a way to take a screenshot of the current signal and then freeze it and display it, in red, as well as what the scope is displaying in real time.  I believe this is what you have done.  I've not got mine yet, due in a week or so, so I can't give you the exact steps to undo what you've done.  Sorry.

[BillyO]

Anyway doesn anyone have any idea what i did, to get that too appear? Or whas it there all the time and did i just not notice?

I'm pretty sure you have enabled FFT in linear mode.  Go to the menu and go to settings.  On the 2nd last line you should see the yellow square on "Lin".  Move the cursor to "OFF" on the same line and press "OK".  The red line should now be gone.

Either that or you did what balck6host said.

[_RUS73_]

Anyway doesn anyone have any idea what i did, to get that too appear?


Kind greats
Matthieu

press shift, and after press Single(Ref)

[BillyO]

press shift, and after press Single(Ref)

Yup, that's it!  Do the same thing again and it goes away.

[Fungus]

Anyway doesn anyone have any idea what i did, to get that too appear? Or whas it there all the time and did i just not notice?

Did you try putting in a signal on channel 1?

[spikey1973]

@all, thanks for your replies!
oddly enough, it has disappeared when I just now turned it on to see how to turn it off. so the mistory remains for now, but all thoughts sound as valid options so.
that beside me knowing that it wasn't a lin FFT, I looked at that before and know I left it in off mode.

@Blackhost, _RUS73_ and BillyO
yeah that is it indeed , allthough It disappeared, this got it "back", and removed it again.
So blackhost, these are the steps , wishing you lot of fun with your new machine when it arrives.

@Fungus, yeah I did. only a signal from the generator for now but, yeah I did put an signal on ch1 (and 2)

Additional question:

Has anyone made a sort of reference list of the "not in manual, but still present functions for now?
seems like an interesting thing to me, so people don't figure things out by accident and then let the information evaporate into oblivion.
I am trying to make a list here for myself, but am very will to post it when done.

for now I have the following items: but please add if I missed something.
- Voice control (although this is discussable, as there is a manual with it in it)
- Shift + V/ch2 → persistend mode /phosphor emulation.
- enter FG via the "Gen" button, sine wave is limited to 5MHz, full-screen FG via the "Home" menu (short press the power button) the sine functions at 10MHz
- new frequency counter is good from 15Hz to 35MHz - well beyond specification.

I am also interested in this mod: but would I be assuming wrongly if I assume an BNC connector is also a viable option?

I fitted a SMA connector to the side of the back cover, for the sig.gen output.
Works much better then the 2 prongs on the top. Also made sure it does not interfere with anything on the inside.
The SMA connector is designed for at least 12GHz and  50 Ω impedance, so should be OK for this application.
Yes, it should have been a female connector, but I only had a male around.  

@Jdev99, did I see correctly that you connect an coaxial directly to the soldertabs on the inside? nothing more then that?
besides ofcourse making sure all is neatly insulated?

@Billy_O
https://nl.aliexpress.com/item/1005007075516670.html?spm=a2g0o.order_list.order_list_main.35.71fe79d24tDpkM&gatewayAdapt=glo2nld

I have ordered one of these, slightly larger so I can store my scope and the probes savely and nothing is lying around messy like it has been.

You could probably get a bigger one in there, maybe a 3200mAh 506090 and go for ten hours run time...?

Also ordered a 4000mAh 606090, should fit in there nicely, a lot more run time.


Kind greats

Matthieu

[spikey1973]

Whoohoo, Just made my first real measurement, kinda the reason why I wanted this.
Recording a signal from a single hit on a piezo disk

A shame one can't download the images really.

one last question:

after a image is saved, is it still possible to zoom in? use the cursorlines. Is the original signal maintained?
or is it nothing more then a screenshot in like a picture form? without any possible form of manipulation?

Kind greats.

PS: I know it's not possible to "download" the image.