FNIRSI DPOX180H Digital Phosphor Dual Channel Handheld 180MHz Oscilloscope Test & Review

[@deadflowers7029]

I very much admire and appreciate a reviewer who is sincere and honest, especially up front, about their knowledge, understanding and interest in a product rather than just regurgitating talking points from a manufacturer's product sheet. We all have the option of not watching any particular video rather than to feel the need to leave negative comments to boost our egos to feel superior.

[@orion310591RS]

33:44 - Because it has floating ground. Its isolated from ground/Earth in our AC system. Difference between oscilloscope with 2 CH and oscilloscope with 1CH, is that on 2CH version, you can use substract math function, and use 2 probes in AC circuit without black GND clip. Beginners really should watch YT videos on how to avoid damaging oscilloscope when connecting GND.

[@LearnElectronicsRepair]

Definitely.

[@dovpauzner5093]

Amazing compact scope , with zoom scaling function and chopping wave output. Good review ! Many thanks .

[@LearnElectronicsRepair]

As requested in a few comments, I'll take a look at the XY mode on the DPOX180H in a short followup next week

[@robertb8636]

Any updates?

[@paulcohen1555]

It's amazing how they succeed to compress the same information as in a 200 large pages TEKTRONICS scope manual in 8 tiny pages!

[@BjornV78]

4:01 The 20Mhz bandwith limit is to block high frequency noise, with that limit enabled, your signal is much cleaner (less ripple) when measuring lower frequency signals.

[@NZHippie]

FFT's are great for finding the harmonics of a fundamental waveform and the amplitude of the harmonics... They can also show the noise spectrum of SMPS output and lots of other clever things...

[@BjornV78]

34:35 If you use a scope probe without the hook and with the bare tip, it's advised to use the little yellow plastic tip cover (in the middle of the bag with probes at 7:09 ) , that way, the ground ring on the probe is protected against touching with your fingers, or the risk of shorting something out on a pcb when doing measurings.

[@marcelomigueldasilva7444]

Que pena que os traços verticais não aparece. 👏 Pelo vídeo, merece 1000 likes por ser o único até agora há fazer medição de pwm.👊

[@DasIllu]

The FFT function is very useful i.e. when trying to identify noise in a signal. You could take a snapshot and measure the dirt on your signal with cursors, or you simply turn on FFT, and with a frequency identified you can narrow down the source a lot easier. XY mode is a wonderful thing to have. From component tracing to playing around with SSTV and stuff like that.

[@LearnElectronicsRepair]

Yes I'm gonna check out the XY mode on a follow up video. I do know what is should do.

[@qzorn4440]

A most exciting little scope. If it had Serial bus decoding for IIC, SPI, UART, CAN, LIN bus types is included, I would buy one. 😎 Thanks for the info video.

[@atunguyd]

No insult intended to you Ricard - but I am amazed at how we have changed our standards - using a Rigol scope as the standard to measure against. It's been a while since I have been in the electronics manufacture sphere but I recall the HW guys only being convinced by a measurement when the Rohde & Schwarz said that is what it was :) I think even if you dared to mention comparing to a Tektronics you got laughed at

[@alanrichardson1672]

Fourier analysis is basically the mathematical analysis of waveforms. It is used a fair amount in electrical power system study work.

[@DavidJohnstone-hi9kr]

I would like to know more about the function generator, such as where the output is located. Consider either a tinySA or tinySA Ultra as an RF signal generator. Both are really good devices for radio work.

[@sumuduasiri]

Nice review. Thanks very much 🙏

[@robtitheridge9708]

Nice to see a hand held with XY mode so can be used with a sweep gen . if you feed the scope with a sign wave then fft will show the harmonics in the signal

[@LearnElectronicsRepair]

yes I'm going to feature this on a followup to see how well it works

[@FiXiT5313]

Great review.. love the content

[@PasiLassila]

Looks like Rigol was in AC mode and the Fnirsi in DC coupling mode when you measured the DIY signal generator.

[@sivoltage]

Did you ever do a follow up to this? Looking at the FFT mode and xy mode.

[@gabrieljuarez6721]

Good job man good explication

[@radekzmazur3389]

Please make test of VIMU MSO21 or MSO41 Series . these are 12 bit osciloscopes with DDS, Logic analizer, Digital IO, ETC with abilitity to record 10Ms/s or 50Ms/s in streaming mode thanks to USB 3.0 connection.

[@theshemullet]

Wouldn't be beat to have 3 oscilloscope's when looking at the same forms. That way you can see which 2 are closer. Would still love a video on how to use the features of an oscilloscope

[@DetBuildsStuff]

Hey Rich - great video (as always) - next time I need a scope I'm going to borrow that lil' bugger. One thing: if you talk to the FNRSI guys, could you ask them for a protocol analyzer? You know, when working with micro controllers, an absolute selling point would be a way to debug I2C, SPI or Serial (you can do all of them with 2 channels). And since this is a software thing, you don't even need to change the hardware. I remember having this feature back in the university on my 4CH scope there and it saved my bacon more than once :)

[@radekwrocawski3308]

how about the display speed per time interval 10ms - 500ms?

[@yalol]

I m majoring in electrical engineering right now. Should I get this oscilloscope?

[@elsaarmstrong-zp6ng]

Can you use it on SMPSU,s on the primary ‘hot’ ground?

[@kriswillems5661]

Your review was kinda short, this scope has actually many other functions and is remarkably good for the price.

[@LearnElectronicsRepair]

Hi @kriswillems5661 thanks for your comment. I already mentioned that I will make a followup video of this scope looking at the XY mode in particular. If there is any other feature you would like me to include in that video let me know and I will do my best 🙂

[@sumuduasiri]

Can you please show how to capture rising edge using this oscilloscope.

[@Lightrunner.]

Hi Richard, it is a good tool for workers who drive to customers. Because, the price is a little bit to high as a stationary DSO in the same class.

[@LearnElectronicsRepair]

I agree, it is a nice handheld scope from what I saw of it. On the bench I generally use a bench scope - but the DPOX180H would be my tool of choice for SMPS repair at the moment due to the relatively safe position of the BNC connectors

[@davidhollfelder9940]

USB data export .. no no to take hot ground reference measurements with that connected, as it will then may not isolated from earth ground (as you mentioned later on).

[@orlandoalarcon4158]

Ancho de banda hasta que frecuencia puede usarse en este bicho ,gracias

[@engr.salaheldin]

Why there is no virtical line in squre wave?

[@kriswillems5661]

did you calibrate your probes?

[@skysurfhf]

the link for invited discord says: the link is expired or not more valid. isn't not working ... can you fix that ? thanks ..

[@RensePosthumus]

I found the cursor implementation very strange. Get a sine signal, turn the vertical cursors on. Position one halfway the upper part of the sine, the other one at the lowest point of the sie. Read the V1/V2 values in the upper left. What do you expect these values represent? Then look in the manual what they actual represent. The signal generator points are very hard to reach if you have two probes and usb-loading. I modiefien my scope to have the signalgen output at the bottom with some banana sockets.

[@maximmaxim2082]

Dear sir hello, I would like asking you about the true analog bandwidth of this scope at -3 dB point. Could your please check it out ? Thank you in advance

[@Runco990]

If that IS a digital phosphor scope, I'd like to see how well it displays analog complex waveforms like an analog video signal or the laser eye pattern from a cd player. EVERYONE that shows, sells, or reviews a scope puts in a sine wave, a square wave, or something super simple. But the real test is a complex analog waveform that NOBODY ever uses, because most of these digital scopes just cannot display that. Would love a follow-up if you can.

[@leetucker9938]

you can make a good curve tracer with x y mode

[@LearnElectronicsRepair]

Yeah I built a Huntron tracker clone from a transformer, a relay and a few other parts on a video a little while ago - I tried it on my analog scope and it worked well. I'll make another video shortly testing that on this scope as well to see how well it will work on this scope

[@Lightrunner.]

Curve tracer 😻😻😻😻😻😻

[@Dutch-linux]

Richard do you think this handheld is better then the fnirsi 1014D ?

[@LearnElectronicsRepair]

Good question. This one will operate at higher frequencies and has a very bright display. It's also more portable. The 1014D I rather liked and it is a bench oscilloscope with a larger screen but is also mains isolated (with the supplied USB-C PSU). Both do the job well as far as the sort of repair work that I do. I think my best answer is that if your usage is similar to mine then you would probably be happy with either, so it comes down to desk space and portability. This one is definitely safer for 'Hot-Ground' non isolated mains circuit repair (ie SMPS) due to the better positioning of the BNC sockets. You can do it with the 1014D but you need to be very careful where you put your fingers when adjusting the time base without getting a nasty shock from the BNC connector. I'm not sure the 1014D has the XY mode that this one has so very soon I will make a video using the home built Huntron tracker, or curve analyzer, on both of them. One thing I did notice is that the XY mode does not work with my home brew tracker on the Rigol. It works fine on my analog Tektronix which is what I used with it. Watch this space for more info...

[@Dutch-linux]

@@LearnElectronicsRepair now I am not sure wich one to buy LOL I will mainly use it to repair audio equipment and laptop boards ... what would you advice between them 2 ?

[@LearnElectronicsRepair]

@@Dutch-linux OK personally I prefer a desktop scope mainly because of the larger screen. The main reason I will use a handheld scope is when I want to work on switch mode PSU and other similar non isolated devices and because of the design of this one (placement of BNC connectors) it is probably the one I would grab just due to safety concerns. Considering the highest frequency signals I ever wanted to see on a motherboard during repair was 25MHz then either would be fine. TBH I can't think of any occasion when I used a scope during laptop repair (or saw anyone else doing so) apart from maybe checking if the CPU accesses the BIOS which just about any scope can do. But then again I am not a laptop repair expert. Again regards audio repair I think just about any scope would do the job.

[@Dutch-linux]

@@LearnElectronicsRepair Thank you

[@33orlan]

Обратите внимание на то, что осциллограф dpox180h больше чем на 15% занижает показания. Посмотрите этот ролик ( FNIRSI DPOX180H vs FNIRSI 1C15. КОСЯК. Incorrect operation of the oscilloscope DPOX180H. ) и попробуйте сами на своём перепроверить.

[@charlesdelfs4940]

Mine arrived in spanish despite requesting English. Does anyone know how to change the language?

[@janakapriyadarshana5835]

What about sampling rate about when selecting an ossiluscope ?

[@orion310591RS]

You cannot expect laboratory&research grade quality out of this device. However, for hobby and semi-professional use, its OK. You will see signals good enough.

[@paulstaf]

There is a piece of protective film over the screen.

[@LearnElectronicsRepair]

@paulstaf Are you 100% certain of this??? It's what what confused me as I mentioned in the video, because there was the usual protective film over the display, which I already removed (but not on video unfortunately), and then there is this second protective film that does not seem to want to come off. Tech Corner TV also had the same problem on his review video kzbin.info/www/bejne/jqCymWOdrtWJf6s at 07:52 he removes the protective film the same one as I removed but at 08:17 he tries to remove the other 'protective film' that you say I need to remove, and appears to damage the display in the attempt. Can you tell us how to remove it?

[@RensePosthumus]

@@LearnElectronicsRepair Is there really a second film? I took my scope apart and there was no film, but a plastic overlay for the screen in order not to damage it. Removing this "secondfilm" does just the opposite of what it is intended for: quard the display against scratches.

[@LearnElectronicsRepair]

@@RensePosthumus Thats kinda what I thought but Paul said otherwise and there is one 'Like' tick as well so he can't be the only one. Unless he likes himself 😉

[@paulstaf]

I rewatched your video and never saw you remove any protector. I think if you take a toothpick and scratch at those bubbles on the right hand side you will catch a thin film and be able to remove it without damaging anything. Just a guess, I don't have one to test. :)

[@LearnElectronicsRepair]

@@paulstaf You are totally correct Paul. I did remove the screen protector off video as I thought that was mundane, but then found this second layer of something that looks like a screen protector which I found hard to remove so like any self respecting YT influence I referred to someone else review and found they had problems removing it also, so I decided not to. Just in case. To me, yes, it does look like a screen protector but it seems it is not easy to remove it either 🤔

[@Npua_Peb]

Portable! Very good

[@florvasquezr]

I had cone and I did not like there are better options on the market.

[@paulcohen1555]

You can't test an "180MHz" scope with improper equipment! You need an 300MHz scope and signal generator to talk about the frequency response and bandwidth.

[@waynekelly2479]

I thing thats a plastic film on the screen just peel it off

[@MuellerNick]

Please stop making reviews of things you have to admit you don't understand them. Just the first 4 minutes contained too many "I don't knw" and "I dont knwo what it is for". -3 dB are at about 70%. And this can only be the usual firsi crap. 500 MSh and a bandwidth of 180 MHz tells it all. I had to quit watching this nonsense. Please continue at what you are good at: Repair stuff.

[@electronicsanta8149]

Here’s an idea, why don’t you buy one and make a better video…sounds like you could do a much better job?

[@LearnElectronicsRepair]

Sorry you didn't like the review. I don't feel the need to go into every detail of a device, I just want to test it in the sort of scenarios I would use it in. Repair work. I do know one of the reasons that FNIRSI and others send me stuff to review is because they want to see that sort of approach. The other thing I would ask, if this stuff is crap, how can it be any use for real life repair work?

[@MuellerNick]

@@electronicsanta8149 Why should I buy one? I have a Rigol MSO 5000 and a owon HDS 242. And a few other irelevant scopes. I based my decissions on several reviews of people who knew what they talked about. And should I buy an other scope, it certainly won't be a fnirsi. They have a reputation of betraying customers. Someone (real case) "I don't know what persitence is, and I don't know how to use it." That's the audience of fnirsi. Feel free to join them.

[@gavinberry1796]

@@LearnElectronicsRepair I enjoyed your honest and no-bs commentary, then again I only did electronics to a B degree, maybe the PhD guys have a different view !

[@LearnElectronicsRepair]

@@gavinberry1796 Ha! I only have three A levels (Physics, Chemistry, Biology) and a City and Guilds (vocational training) in Electronics Repair