Fnirsi DPOX180H 2x180MHz handheld oscilloscope

Testing DPOX180H from Fnirsi - a two channel 180MHz handheld digital phosphor oscilloscope with a built-in function generator, XY mode, FFT and a lot more. Including a peek what's inside and a capacity test of its 3000mAh Li-ion battery.
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[@chrisg6597]

But what about the supplied AC adapter?... Is it OK, Dodgy, or Super Dodgy?

[@inseries5494]

Syoooper Dodgeeeee

[@nathanieljames7462]

First thought when I saw that power block too. Is it super dodgy or what??

[@visionofwellboyofficial]

Just DODGY

[@user-tz3fd8hm4q]

Or "Ultra dodgy" That would be a new category that would fit for some power supplies.

[@erikziak1249]

I expect it to be Nájs.

[@WagTsX]

I started buying a lot of fnirsi gear after seeing your videos, from the transistor tester, pocket oscilloscopes and even that geiger counter than I plan to hack to add the classic clicking sound (I've seen a video showing a very simple way to do it but have not got into it yet, maybe you can do it as well? It just use the input from the blinking LED directly to the buzzer, wonder why Fnirsi didn't make it themselves). So the sponsorship really pays off. The thing is, they are very cheap for what they deliver, making a nice value for the money.

[@keithking1985]

F-nirsi seems to be doing good lately with their products 👍🇮🇪

[@antibrevity]

Fnirsi gets better and better with each new model and this one is quite impressive for a handheld as it might be the first one I've seen with shielded inputs sections. Thanks for the overview. I wish that you'd tested the bandwidth with some complex signals as these products tend to greatly exaggerate their bandwidth and interpolate all high-frequency waveforms into sine waves. The waveforms seem quite good from what you've shown, though, and the input stages are encouraging.

[@1pcfred]

I'd have loved to have seen just what they were shielding. That was the "input protection" they were talking about.

[@vaclavtrpisovsky]

> interpolate all high-frequency signals into sine waves That’s what you should expect per the Nyquist-Shannon sampling theorem. A 300MHz square wave should appear as a sine wave on a 500MHz oscilloscope. The question is whether the Nyquist frequency is actually as high as the advertised bandwidth.

[@1pcfred]

@@vaclavtrpisovsky yeah with these bandwidths you pretty much have to divide them by 10 to figure out what they can really do. So in this case "180 MHz" = 18 MHz. That's what it can display. Anything above that it's just going to draw a sine wave. So it's signal, no signal at that point. Which is not nothing. But it's not the most useful either.

[@vaclavtrpisovsky]

@@1pcfred 10? Where did you get that from? You can draw a decent approximation of a square wave with harmonics at 1, 3 and 5 times the base frequency.

[@1pcfred]

@@vaclavtrpisovsky I get that from the other cheap DSO handhelds I have. Whatever the "bandwidth" is they can display the trace up to a tenth of that value. Past that it's all sine waves.

[@abdelghanisiradj3026]

Congratulations on this wonderful device❤😮😊

[@erikziak1249]

I almost expected you to disassemble the included power supply. 😀 It might be "NÁÁJS".

[@LMB222]

I doubt it. The ways the Chinese can mess up the mechanical design are limitless ;)

[@FF177-]

Wow, thats actually a lot of useful features for a handheld device! Especially the waveform replay could be useful

[@beatrute2677]

that is a whole lotta scope for the price. Very nice.

[@LawpickingLocksmith]

Thanks! Fnirsi has finally come of age! I am going to get one.

[@Alexelectricalengineering]

That looks like a very nice oscilloscope! Thumbs up 😎👍👍

[@1pcfred]

I would have liked to have seen what was under those cans for a front end. I'd have also liked to have seen the real bandwidth of the device. But what was shown was pretty impressive. For hobby electronics it looks like it'd do the business to me.

[@pvc988]

The big chip is a small FPGA. Unmarked SO-8 chip on the side is probably its configuration memory. BTW. Would be nice to have some rotary encoder, or 2, or even 3 ;) on the sides. Physical buttons are ok for bench operation (certainly better than touchscreen) but for handheld operation, rotary encoders would be great.

[@drdyna]

Very cool! I have the smaller Fnirsi scope, but I gotta get this one too!

[@keithking1985]

I was thinking of getting this very scope.. Hope it gets a good review. 😊 WOW, IM SO HAPPY THIS TURNED OUT TO BE A GREAT DEVICE,,. 😊😊 The next scooter or E-bike i fix im buying another piece of kit i don't actually need 😅.. CAN'T WAIT.. THANKS FOR THE REVIEW 👍😊🇮🇪

[@tajtrlik1111]

Ďakujem ti za toto video, je to šikovný pomocník, recenziu na tento osciloskop som videl aj na kanále IMSAI Guy, on ho ale nerozoberal, tu som mal možnosť aj vidieť jeho "střevíčka" :)

[@Pulverrostmannen]

10:30 I just finished repairing my Heathkit IO-17 Tube Oscilloscope today and I did exactly that with that too lol, But it looked a lot more smooth with a true analog scope lol

[@nikiamz6501]

Pretty cool actually

[@martinpetkov4580]

Thank u

[@user-tz3fd8hm4q]

That's quite a nice oscilloscope. But I'd like to see a teardown of the included charger too, but I'm assuming it's no "electrocution houseburner", as you call dodgy chargers. And one question: what's the resolution of the display?

[@vaclavtrpisovsky]

320x240 as usual

[@johnwelbourn3811]

Considering the cost of a half-decent multimeter, that is great value.

[@pvc988]

Is the USB port ground isolated from the channels?

[@mp3musicbox]

Next video teardown of the power supply?

[@LozzoAmiga]

Cat! 10:58.

[@meherhjb7170]

Nayyyyyce :D

[@fluffyblue4006]

Nice handheld oscilloscope. I missed some things from your review, so I looked it up. The unit can charge while in operation. In the manual is an ominous warning about not using the supplied charger: the board might burn?!? The USB port connected to a computer allows you to get the saved .WAV files and .BMP files, and put firmware upgrade images. (No .JPG or .PNG?!?) It does not interact with an accompanying software product or anything like that. Interesting product. I might buy it. Or maybe I'll wait for the next iteration. I'm still on the fence.

[@tullgutten]

Never charge and measure anything that is beeing connected to ac supply as it might short over no matter the charger

[@tvelektron]

Realy nice scope - but why they did not use a "real" connector for the generator output? Okay, maybe it is about size and space on the panel but a tiny SMA connector just for example would be more useful...

[@DiodeGoneWild]

The generator is often going to be used as a calibrator, so it makes sense to use the typical terminals of a built in oscilloscope calibrator, so the probe can be hooked to it.

[@UpLateGeek]

There are connectors designed to fit the tip of a scope probe, mating with the positive pin and the ground ring. I would guess these are not cheap though, which is why they haven't used one. Plus it would require an adapter to BNC or a cable with croc clips or something, which would cost even more. If you're buying this, you've almost certainly got your own regular clip leads, which are fine for getting a test signal into most circuits you're likely wanting to test with this. Besides, if you need something better, you'd probably want to look at a dedicated signal generator anyway.

[@stoyantsalev3109]

This "analog bandwidth"... Dare I think it's per channel, or just the sum of both? :) E.g. ~90MHz per channel? But anyway, it's nice to see even more affordable oscilloscopes being made available to hobbyists on a budget! (Edit: affordable, not quite cheap - 250$ w/ delivery but w/o taxes)

[@sinaansari2317]

How abou the charger? is it doggy?

[@user-vm2ho7mh5d]

You forgot to look under those shieldings.

[@jasejj]

Not bad for £85 delivered that... bought one, I can sell my Techtronix now, will save space as well.

[@tiagoferreira086]

I wouldn't sell the tek... This scope has quite a number of issues

[@krzysztofsoja5301]

Would you like to check the actual bandwidth of this oscilloscope?

[@Camper.78]

My Device died right after first Time use. The was dicharged to 0Volts, I had to change the Battery no it is working. Don‘t expect a guarantee or something else from Fnirsi. I am pretty much disappointed.

[@sammin5764]

🌷

[@qutube100]

Ohhhhh x y mode i think its curve tracing time octopidlishus!

[@ekenpad8482]

The $100,000 question: What's the real bandwidth (to 3db drop) and are there bad aliasing issues at certain whole frequencies as seen on their tablet and desktop scopes?

[@tullgutten]

EEVBlog has a bandwidth test on it

[@nathanieljames7462]

I wonder if the rebranded fnirsi are as good as the brandname versions. Seems like they're cheaper... QA rejects maybe?

[@tiagoferreira086]

This scope it's nice for its price, but it has quite a number of issues, mostly on the triggering, there is thread on eevblog talking about these annoyances.

[@keithking1985]

Oh Wait,.. can it do the 180MHz it's advertising ❓❓ (Not crazy important for my need's but was just wondering)

[@DiodeGoneWild]

Yes, it can. With a 200MHz probe, the system bandwidth is 134MHz and the rise time is 2.6ns, which is about what the test shows.

[@jstro-hobbytech]

You shouldve answered my message, i ended up spending a fortune on new old stock tesla parts for making guitar pedals. Id still be interested in working out a deal for some of you new old stock stuff if you get back to me. If not, I thank you for the great content sir.

[@SharvilSawargaonkar]

Instead of buttons they should have given a touch display

[@DiodeGoneWild]

Hell no :D Touchscreens are for phones (which I rarely use anyway). In cameras, oscilloscopes and other tools, I prefer buttons. My camera has a touchscreen, but virtually everything can also be controlled using buttons. When I touch the touchscreen of my camera, 99% of the time it's accidental! Super annoying! Without knowing I sometimes change the settings and make the video crappy. It happened in this video too, one part is quite overexposed.

[@jonnyfisch_]

Fnirsi has touch oscilloscopes, I have one (FNIRSI-1013D, "Tablet" oscilloscope) for 2 years now and I have to say that it is enough for hobbyist's. 2 channel, 100MHz, 1GSa/s. Personally I find it easier to navigate through touch menues than button menues.

[@getyerspn]

No ..hell no ... Touchscreens suck when your deep inside machine trying to fix it.

Kosketusnäytöissä vaan harvemmin kontaktihäiriöitä harvoin kun painenee kiertelee kytkimiä tuppaa pinnat hapetumaan ja toimii vanhemmiten miten sattuu.@@getyerspn

[@nathanieljames7462]

Capacitive buttons on a device that may be used near sufficient RFE to trigger them might be a neat demo for wireless power but probably frustrating for actual diagnosis or profiling. Even filming some of my tesla coil experiments with a smart phone can get pretty random sometimes

[@dl8cy]

Conclusion: BORING I am following this channel for many years, the old videos about old Russian Oszilloskop s, elevators or other old stuff were much more interesting than this Chinese advertising channel