Considering the Hantek 6022BE 2x20MHz Oscilloscope for Basic Diagnoses: Opinions?

Question

Hello I would like to buy a 2-channel Hantek 6022BE 2x20MHz oscilloscope which you can buy on ebay for less than PLN 200. I would like to ask you for your opinions what it is worth and whether it is suitable for basic diagnoses in converters. Now I am not able to spend over PLN 1000 for a...

Jawi_P · Answer

Many people who use real oscilloscopes are about to put this idea out of your head

But there are also people who have really small needs and are sometimes satisfied with this equipment.
Read the opinions of people who use it:
http://forum.atnel.pl/topic5078.html
http://forum.atnel.pl/topic5078.html
In fact, you won't find anything else in the money you want to spend, maybe an analog of the old one.
I haven't used it myself, so I won't tell you what it's worth. But there was a time when I thought about making a present for my son who was starting to play with electronics. Because he wanted to buy something for self-assembly, with a display like from a cell phone. Probably just to solder ...

pawelr98 · Answer

You will need AC mode in inverters.

Hantek 6022BE does not have AC mode.
Well, unless a colleague wants to make some extra money by himself (you need an appropriate capacitor) and then calibrate (if he has a model signal source).

The 20 MHz band is a fiction at this sampling rate. The waveforms will be very inaccurate at higher frequencies.

Better to buy an old analog. They often manage a bandwidth 30% higher than the specification. In addition, they are more resistant to damage and you can easily get schematics (necessary for repairs / maintenance).

tplewa · Answer

@ rsv6 Talk to the cookie monster from the forum, I know I trade used equipment and maybe something will have a reasonable value with some analogs at a reasonable price that will be acceptable to you. The mentioned old analog will be better than any cheap digital Chinese ... IMHO, it is better to put the money in your sock and wait for better times with the purchase ... ... it's so serious because if you don't have money, it's a shame to just waste it. As a colleague mentioned above, it is more for fun or not very demanding people, I would not approach the repair of inverters with something like this (even if it is a repair for my own needs, not to mention how you do it commercially) ...

rsv6 · Answer

Let me just say that I do not want to see analog crap in my eyes I had one os360 lamp went out after half a year of lying in the garage .. I need something to quickly check the signals if they are reversed by 180st max to 1Mhz nothing better at this price is not available and the analog ones are hard something usable at this price to buy.

tplewa · Answer

@ rsv6 What can I say. If you say that analogs are crap, buy a cheap digit, you will see how such equipment works ... ... but unfortunately the truth is that a digit on which you can work without problems requires quite a lot of money. Therefore, in the absence of cash, an analog is a good option, and in some applications it is even better than cheap numbers (one of the more sensible options is Rigiol, which we wrote about in the thread). Unfortunately, the truth is that most of the cheap numbers are suitable, I will not say what ... BTW, the lamp from lying down is unlikely to die ... the reason had to be different ....

rsv6 · Answer

Here is the problem with the failure of these lamps, so I got serious about it and it is impossible to fix it ...

tplewa · Answer

Nothing is forever ... LCD displays too.
On the other hand, as I mentioned, the lamps do not fall on their own ... unless it was already burned out and someone was combining something with the voltages so that something could still be seen on it.

On the other hand, the garage is a poor place to store measuring equipment ...

Another thing is not to write this to anger you or trick you to spend the money. I simply went through the topics of purchasing measuring equipment for myself more than once and I saw some equipment before issuing the cash register.

That is why I say that if you do not have money, it does not make sense to insist on a bad number, because analogues in these amounts beat these numbers on the head.

I know that when you buy such equipment at auctions, you can find a mine ... that's why I mentioned a cookie monster that you can see from the posts puts some hearts into repairing sensible analogues ... so maybe it has something that will fit in the price requirements and it will be cheaper than Rigol ...
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rsv6 · Answer

Because that's what trades on ebay, this oscilloscope is 300zl cheaper ..

tplewa · Answer

It is known that you can buy cheaper on eBay ... but so what if it is a toy, not a measuring device. When you take the measurement, you want to be sure that you do not have any errors on the screen, etc. You can put this something on a Cypress system (USB) + A / C converter and use it for fun. Another thing is downloading from outside the EU, sometimes it is burdened with additional fees and the stick even with these fees ... recently CoilCraft samples came up with a clo ... as it turned out that transformers can be classified into many items, the same with other electronic elements. At the end I had it to let the samples come back to the producer ... Anyway, as many times I wrote, the decision is yours, if you don't feel sorry to waste this money, you can buy ... If I had a shortage of cash, I would not waste it so much and spend it in a more sensible way, even at the cost of collecting it. Anyway, I buy the equipment myself ... I prefer to collect a year or two and buy something specific than quickly or quickly, which will quickly end up in the garbage can ... That's a life lesson after a few times I drowned some money for some junk that was not suitable for anything ...

pawelr98 · Answer

The lamp can be replaced and it is usually not that expensive. You just need to model the lamp and look for it. Oscilloscopes described as unproven but the lamp shines can be used as donors. Usually, in the case of analog oscilloscopes, it is also possible to find a schematic. As long as I'm looking for it, OS360 is not there. However, for the more popular models, such as the C1-112, there is no problem with the diagram. I also found for my niche C1-107. The manual itself contains a block diagram + a list of elements (a list according to numbers on the PCB). On the internet I have an analog circuit diagram for an oscilloscope. Only the multimeter diagram is missing (I have a damaged one, it is a separate block so it does not affect the operation of the oscilloscope part). If a colleague wonders why these dumbbells are not suitable, let him see what sampling rates have, for example, the Rigol DS1052E oscilloscope. 2 Channels at 50MHz have a sampling rate of 500MSa / s, this dumbbell is 48MSa / s. Something I don't think it works well for at over 10 times the sampling rate. From what I read in the past, algorithms are used which, with such a limited number of samples, try to generate an approximation of the course. A colleague of a functional C1-112 will hunt or something like that and it will be fine. You can get diagrams, spare parts and a lot of operating descriptions for these models. The Soviet Union often cloned integrated circuits alive, so matching anything among modern components is not a problem.

WX3V · Answer

@ rsv6 After reading the technical data of the Hantek 6022BE, I think that it is not worth spending any money on it. It is better to spend some time repairing the OS 360 yourself or for a similar amount to have it repaired (probably a soaked transformer of the converter). @ pawelr98 I have a schematic of a voltmeter for C1-107. Let me know on priv and I will send it to you. Greetings.

rsv6 · Answer

I gave the oscilloscope to the guy who repairs the tv and rtv and said that the lamp can not be released

I ordered this Hantek for PLN 200 when it comes and it will be possible to do something on it, I will leave it if not, I will sell it

Jawi_P · Answer

Be sure to show it off. Here, many people will tell you how to do tests to see if it is worth anything. But I checked on OLX, it's a working analog of 2 channels up to 20-25MHz, sometimes more, you can get for a similar amount.

rsv6 · Answer

And I once read that all these old Russian oscilloscopes are only suitable for decoration, I don't know what to think anymore. One praises the other one complains and none has tested: /

zdzisiek1979 · Answer

There are typically amateur oscilloscopes, which could more be called a signal indicator, and are advanced professional. The price has a lot to say here.
And the Russian ones are terrible to repair due to the different standards of making elements. I'm skipping the nasty ungrateful PCBs.

And to buy an analog of a used "good" one, search with a candle. Most of them are resuscitated electro-waste. While the OK oscilloscope itself can serve decades, the tubes are already finished. They worked on websites, so they turned on and shone for half a day until the stripes were burned out.
And this adapter is 20MHz, forget it because if it has about 40Ms it gives 2 samples for a period and that's already ... 1MHz is ok but the higher the frequency, the fewer samples and this is pure fantasy about the waveform.
In all of this, I would only be worried about USB separation.

If there is no AC coupling, make an adapter with a 100nF 400V capacitor and that's it.

tplewa · Answer

And here we come back to the topic of Rigola (which a colleague also founded), which has a 250Msa / s bidder using 4 channels, which gives us a measurement of somewhere max 25MHz also for comparison Well, what would not be, I would recommend this rigola at this cash register, i.e. PLN 1700, and when you buy on a company, it is even less ... IMHO is one of the better oscilloscopes, not the best in this price register, I would be reluctant to buy Rgiola DS2000 for almost 4k (DS2072) - because there are errors in the software, etc., it would be more difficult to forgive. On the other hand, such a curiosity, I had a bit of fun with the DS2072 ... and I don't know if I have bad memories or, despite the smaller number of shades, the DS1054Z reproduces the waveforms better than the DS2072 (ultra vision) - at least closer to my DSOX3054 ... BTW, if someone has a DS2000 in Warsaw, it might be time to spit and compare it - it's so offtop ... Another thing at this price, maybe some primitive old digit would be found - better than this pickup ... A few days ago, I gave the old Tek TDS210 away for free to the radio club - I remembered about it in this thread that it rots on the closet ... if I had no one to pass it to, I would probably give it away for a few beers ...

zdzisiek1979 · Answer

Only how many times are four channels used at once and two are densely colored on the screen. I skip triggering.
Probably 70% use one channel, 25% two and the rest up to four *

(There are four kinds of lies. Perfect, hideous, disgusting and statistical *)

tplewa · Answer

Well, that's what I mentioned more about sampling ... but going further, if someone needs these 4 channels and such a band touches him - then the Rigol is unbeatable ... ... ... and the Rigol 1054Z, as I mentioned, fits right on my desk - with a bigger one I have to rearrange everything to make room for the oscilloscope - so I like it for its size too It's like a crap, but for several years I have been planning to convert the room into a workshop, buy countertops, etc. and the plans are ending because there is never time for such a demolition - so perfect rigol

WX3V · Answer

Some time ago I used a Hameg HM1008 oscilloscope (analog and digital in one housing). Naturally, I was able to compare the waveforms on the same screen: analog and digital (1Gs / s). Well, the higher the frequency of the measured signal, the "smoother" or "prettier" the digital waveform was. I underestimated and underestimated such "embellishments" because most often I need to read this information, which is completely dirty with a properly functioning prototype. Anyway, as a result of such "smoothing" of the signal, all derivatives and functions available in the digit (eg FFT) also do not give the correct result.
Typically, in a digital oscilloscope, the upper frequency limit is the tenth of the sampling rate, i.e. we have 10 measured points (on the screen) during a single period. For a sine wave this is still OK, but if we try to measure the rise time of square pulses, we can make significant mistakes. The technical data of the oscilloscopes lack (by default) information about the time of a single measurement of the ADC converter, i.e. the averaging time of the changing voltage.
Additionally, commonly used waveform approximation algorithms (in digit) treat the waveform as an infinitely differentiable (Rn) function. Such action (as a result) must lead to smoothing the waveform or its distortion, e.g. as a result of calculating the voltage from the Fourier series truncated on an arbitrarily accepted word.
The biggest "pain" of oscilloscopes attached to laptops is the need to limit the speed of data transfer via the USB connection. So on the screen we can see at most every waveform. On the other hand, in the analog, we see almost all of them - one by one.
Don't think, however, that I am opposed to digital oscilloscopes, although I think that the analog "picture" is much easier to interpret. In the case of a digital "picture", this interpretation must include a full understanding of what could or better what could and "done" the digitization of the signal.
Greetings.

tplewa · Answer

@ WX3V Beautifully described and I am in favor of it. Personally, I also like analogues and if I have a place to put it, some nice older Tek will end up (that's why I don't have a friend that the analog is crap - you just have to look for a bit) ... I don't fit So where's the analog ... Maybe I will finally get an extension for this small desk, it will be better ... but I don't have a time. I just came back from the company and so non-stop ;) Another thing is the problem with numbers is that they have really good prices for many amateurs, not amateurs, because sometimes it is a big expense for the company. So we mostly turn in equipment which, unfortunately, is not some hyper professional and burdened with some limitations and errors (even the mentioned Agilent because it is not some high league, and the price breaks down anyway) ... How would I buy a new one for as much as in a store I would never do that ... However, as for USB, there are cypress USB 3.0 systems that give better transfers, but unfortunately it is known that this will increase the cost of the USB system and the converter, so they make such adapters to be cheap ... that's my little grajdolek (sorry for the crap, but I don't have the strength to clean it lately, I work more in the company) ... I don't even think about the attachment with a laptop, because there is no room for it anymore even 11.6 ThinkPad takes up too much space for me ...

pawelr98 · Answer

I gave PLN 200 for my C1-107, including shipping. There is no revelation because 1 5MHz channel, but in converters and audio it works. I suspect that in a similar band this dumbbell would also do well. However, Rusek was cheaper, had AC mode and was autonomous. If a friend bought it, let him share the results. Going with the arguments on analogues, I saw a 3x250MHz oscilloscope for probably PLN 800. New digital ones at the same price offer max 100MHz. But the repairs are probably more terrible than the multimeter logic in my Russian.

WX3V · Answer

The quality and correct operation of any device can be assessed only if:
1. You know exactly how it works (now you need to know both hardware and software),
2. "Organoleptically" you have experienced the work of many, but having the same function, different devices.
3. You have sufficient skills to be able to repair (or at least diagnose) any fault (or malfunction) if you have a diagram.
Well, in the age of the Internet, anyone can "take up" the expert activity, and what's more (putting himself in the role of an expert) there is no need to explain to "profane" what the advantage or "handicap" of the assessed equipment consists of. Therefore, the opinions available on the Internet are very diverse, and the assessment of their value is left to the shoulders of the reader. As a result, the less you know, the easier it is to be manipulated, and moreover, you do not know what is the cause of an opinion directly about what is an advantage or a disadvantage of the device. I will not continue this thread, because it is clear what you need to do to have your own opinion about the device, as well as your own opinion about the opinions available on the web.
@ pawelr98
Voltmeters and ohmmeters in Russian oscilloscopes were made "on one hoof". A detailed description of the principle of operation can be found in the manual for the C1-112A oscilloscope (unfortunately in Russian). There is a modulo 4000 counter that counts "clock" pulses while charging (or discharging) the capacitor from zero to some (preset) voltage. Initially, the counter is set to 4000, and subsequent pulses reduce its content (reverse counter). Thus, the higher the measured voltage, the greater the number of pulses in the meter etc. The pulse generation frequency and the maximum voltage are selected so as to directly give the result in volts. You would have to check the diagram, but probably all of the integrated circuits used there are available in our stores. The only problem with the C1-107 is that they used "flat" ("surface") mounts, but the pin raster was "Soviet". So switching to TTL or CMOS would require bending the legs in DIP housings.

I envy you that you can deal with electronics almost every day. I have to do "time compression miracles" so that I can "play with the soldering iron". And still, "I can afford" at most 2-3 hours a week.
Greetings.

tplewa · Answer

Maybe it's time to change jobs I returned to electronics / programming after years of administering so at work and at home he he - the question is when will he get bored again and come back to admin At present, the electronic circuit is created rather quickly, and then instead of soldering, you sit and tap the code on some uC, then for FPGA, etc.

WX3V · Answer

Hmm, recently I change my job on average every 3 years - I did the last shift last year. Even though I already have a lot of gray hair on my head, it goes well with me. However, each subsequent place is a new challenge that I take up (albeit often with a soul on my shoulder). Equally often, after solving a problem, I meet with the brake (usually a supervisor) and then put the notice on the table. As a rule, I do not get bribed because in the next place I am able to negotiate more. Eh, I think I could write a thick book entitled How to Play with Employers. Greetings.

tplewa · Answer

@ WX3V I was more concerned with a change so that I did not have to be jealous I have a similar approach - I always do what I like, the rest I have censorship

stasiekb100 · Answer

Let me give you a hint what the author has in mind. You can watch the signals by analog, but when a device starts and turns off, you can record the signals during the start. I would need such an oscilloscope. Tell us what model to be interested in.

tplewa · Answer

In this thread the author asked for an oscilloscope and got this answer ... and at the moment, if you want a digit and do not want to spend more than 1722 PLN, this is the only answer. If there is no such amount, the analog is because the rest are problems (either with hardware or with firmware - which would not be rigol also has errors in the firmware, but still at a reasonable level, so you can use it without too much nerves) ... ... but you also need to be aware that this oscilloscope is a compromise and you need to know its limitations ... (which would not be the case that it is not perfect either). If you want to spend more and limit it to 2 channels and a smaller sample memory, you can also think about something else ... However, if you want a super digit, prepare an amount for a good-class car, after buying one, you will stop complaining that Rigol for 1700 PLN is too expensive...

rsv6 · Answer

Nothing waiting for this Hantek from China. We will see if it is suitable for basic measurements

rsv6 · Answer

Well, Lipa the seller didn't send the oscilloscope in two weeks and he returned the money so I thought about it. So what else would you recommend .. Priced and good

Considering the Hantek 6022BE 2x20MHz Oscilloscope for Basic Diagnoses: Opinions?

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