New toy(?) scope Fnirsi DPOX180H, claimed 180MHz/500MSps (May 2023)

[Evi]

You should believe and give them money
But better give me

[RAPo]

I used my RF explorer signal generator to generate 50MHz/60MHz signals.
Had 3 oscilloscopes, Zeeweii, Dpox and a Rigol.

See the attached image for the traces

[Aldo22]

I used my RF explorer signal generator to generate 50MHz/60MHz signals.
Had 3 oscilloscopes, Zeeweii, Dpox and a Rigol.

See the attached image for the traces

Thank you!
So the Fnirsi works up to 60MHz (square wave) as I thought it would.
That the Zeeweii only goes up to 40MHz (square wave) was clear.
That the Rigol with 2 GSa/s shows more details is also no surprise.

[RAPo]

no big deal, you can give to your local charity in order to pay me ;-)

[Evi]

@RAPo
you did not show 2 rays Fnirsi pictures @50 and 60MHz
unsufficient to conclude abouwt interleave mode

[RAPo]

Should I sent the same signal to both channels?

[Evi]

Sure

[memed]

Hi
Would DPOX180H be able to read CAN low and high on the car? And PC BIOS?
I'm looking for kind of universal oscilloscope for me to learn/explore...
I don't know what kind of signals should I expect from line but DPOX180H graph lines  looks way different compare to Owon hds2102s...
Many of screenshots from dpox180h looks almost same perhabs hds2102 graph are unexpectly different like in real.

[Aldo22]

@RAPo
you did not show 2 rays Fnirsi pictures @50 and 60MHz
unsufficient to conclude abouwt interleave mode

What exactly do you expect to see there?
You have already shown in your video that the square wave ends at 25/30 MHz in 2-channel mode.

https://youtube.com/shorts/dXxeHHcKgRU?feature=share

[dietert1]

The idea to use a handheld while checking a car appears logical, but there are much better tools to look at CAN data - normally a laptop plus some USB to CAN adapter plus some software. I think the FNIRSI won't even decode the data.
For checking the boot sequence of a PC one doesn't need a handheld. And once more there are better tools, like the logic analyzer mentioned above.
I would always prefer a pre-owned professional scope.

Regards, Dieter

[RAPo]

Hi
Would DPOX180H be able to read CAN low and high on the car? And PC BIOS?
I'm looking for kind of universal oscilloscope for me to learn/explore...
I don't know what kind of signals should I expect from line but DPOX180H graph lines  looks way different compare to Owon hds2102s...
Many of screenshots from dpox180h looks almost same perhabs hds2102 graph are unexpectly different like in real.

I don't dabble with CAN. Could you explain in laymen's terms when a scope is a good scope for CAN?
PC Bios: you can see the signal but there is no functionality for digital signals like a MSO/MDO scope.
Yes they look different than the Owon, maybe the phosphor maybe some other things

[RAPo]

oke, it is coming up today

Sure

[RAPo]

Agreed. Take a micsig SATO1004 for instance.

The idea to use a handheld while checking a car appears logical, but there are much better tools to look at CAN data - normally a laptop plus some USB to CAN adapter plus some software. I think the FNIRSI won't even decode the data.
For checking the boot sequence of a PC one doesn't need a handheld. And once more there are better tools, like the logic analyzer mentioned above.
I would always prefer a pre-owned professional scope.

Regards, Dieter

[RAPo]

Take a look

[Aldo22]

Take a look

Did you feed it with a square wave or with the waveform in Image #1?

I still don't understand what this is for.
The DPOX shows square waves up to max. 60MHz and in 2-channel mode up to max. 30MHz, as I suspected.
Why should you test beyond that if you know it?

There are also youtubers who do this: "OK, at 100MHz it shows total garbage, let's see what it shows at 150MHz...".

If you know that a Citroën 2CV does not go 120km/h, why should you test if it goes 180km/h?

[RAPo]

Just replying to the wish of Evi,
Same signal as in the earlier image send to both channels as requested.

[Aldo22]

Just replying to the wish of Evi,
Same signal as in the earlier image send to both channels as requested.

I'm sorry, but I don't quite understand.
What is the difference between these two images?
Shouldn't they show the same if both are square waves?

How do you turn off the second channel?
Or does it do that by itself when nothing is connected?

[Evi]

Sorry, my video was done with JDS6600.
Its square become sine @30MHz


DPO does show 50MHz square 1 channell correctly

[Evi]

ADF4351 as source. Probe 1/10
https://youtube.com/shorts/KcHt9zd-tHY?feature=share

[memed]

I really like dpox180h because of quick access to most important buttons, size/shape, screen quality etc.
But look like Owon hds272s is a bit more accurate and universal.
I would like handheld because I can quickly take with me and use it (learn/explore)
I don't know what is benefit of loosing this vertical lines in dpox ??
I do repairs for my self thats why looking for something universal to help me learn and look at the grap.
if there is something and if looks read looks ok but dpox somethimes confusing without vertical lines.
DPOX was on deal £101 on banggood so thought very good idea for this money..
I'm sure proper oscilloscope would be much much better and would sit all the time in one place rarely usable in my case
Can anyone give idea of other tool to consider than owon or dpox? or should choose owon?
Owon does not have FFT which seems to be good I think?
attached few pictures to compare dpox and owon on CAN bus.
I would rather check CAN to see if there is short or any unusual activity rather than decode as even don't know
how to decode

[Aldo22]

But look like Owon hds272s is a bit more accurate and universal.

Owon HDS272S is a scopemeter (multimeter + oscilloscope) with worse (oscilloscope-)specifications than the Fnirsi.

HDS272S:
Bandwith: 70MHz
Sampling rate: 250 MSa/s (single channel) / 125 MSa/s (dual channel)

It depends on what you need and want.
Both can probably keep up with a CAN bus, but I have no idea about that.

A Zeeweii would probably do as well. It is available even cheaper.

I don't know what is benefit of loosing this vertical lines in dpox ??

This was changed by a firmware update.
It's all in this thread.

[memed]

But look like Owon hds272s is a bit more accurate and universal.

Owon HDS272S is a scopemeter (multimeter + oscilloscope) with worse (oscilloscope-)specifications than the Fnirsi.
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What about HDS2102s that have enough 100MHz and 500MSa/s
I like on OWON replaceable batteries 18650 and 3.5" screen but cost is much higher (£249 amazon)
Pain is that for this money can get second hand proper oscilloscope but not pocket size.
I saw vertical lines on DPOX but they are still not much visible...

A Zeeweii would probably do as well. It is available even cheaper.

I found DSO2512g looks also good and wondering if would be better to find bargain and get it instead of spending £110 on DPOX or £249 on OWON. Would it manage to read BIOS and CAN as OWON HDS272s do?

[Aldo22]

I found DSO2512g looks also good and wondering if would be better to find bargain and get it instead of spending £110 on DPOX or £249 on OWON. Would it manage to read BIOS and CAN as OWON HDS272s do?

I would say the HDS272s and the DSO2512G are very similar in what you can and can't do with them.
Except, of course, that the Zeeweii doesn't have a multimeter function.
The Owon is perhaps a bit more elaborately made, but it also costs more.

There will also be a scopemeter from Zeeweii coming soon, but the price is not yet known.
https://www.eevblog.com/forum/testgear/another-dsodmm-zeeweii-dso3d12-claimed-120mhz250msps/

In this price range, it all depends on what you want to spend and what you consider necessary for your purpose.

[infino]

I have noticed this problem with the Fnirsi DPOX180H instrument,
when measuring a DC voltage outside the measurement range, Fnirsi shows the maximum measured voltage instead of indicating a measurement error.
A constant voltage of 19V is applied to the probe input and the Fnirsi shows 4V. A should show an error.

[BillyO]

That maybe a hardware limitation.  The input clamp might be upstream from where the voltage is measured.  If so it is not something that can be fixed in firmware.  But I'm only guessing.