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

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Is the Hantek 6022BE USB oscilloscope suitable for basic inverter/converter diagnostics, or is there a better option in this budget?

No — the Hantek 6022BE is generally judged too limited for reliable basic diagnostics, because it has no AC coupling, its advertised 20 MHz bandwidth is misleading at its low sample rate, and the displayed waveforms become inaccurate at higher frequencies [#16666541][#16672244][#16671745] For inverter work, AC mode is useful; if you buy this model you would need to add an external coupling capacitor and then recalibrate it [#16666541] Several replies say that, in this price range, an old analog oscilloscope is a better choice because it is more usable, more resistant to damage, and easier to repair thanks to available schematics and parts [#16666541][#16670798] If you can spend more later, people point to a better-class digital scope such as a Rigol, but not in the Hantek’s budget range [#16675956]
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  • #31 16691528
    stasiekb100
    Level 31  
    Posts: 2092
    Help: 118
    Rate: 454
    I am already hot for this rigola 4 canals for 1722 PLN.
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  • #32 16691793
    rsv6
    Level 13  
    Posts: 1713
    Rate: 282
    stasiekb100 wrote:
    I am already hot for this rigola 4 canals for 1722 PLN.

    If you give me 1200, I'll take it. Stop advertising it here. I knew a Singlet with better parameters for the price
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  • #33 16693158
    tplewa
    Level 39  
    Posts: 6727
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    Rate: 991
    rsv6 wrote:
    stasiekb100 wrote:
    I am already hot for this rigola 4 canals for 1722 PLN.

    If you give me 1200, I'll take it. Stop advertising it here. I knew a Singlet with better parameters for the price


    But everything has already been said ... no one can make a miracle that you buy something sensible for such a sum ... Only look for some analog ... but you don't want to ...

    Besides, you don't want to listen to good advice, you don't know about a Sigilent, etc., then choose something with great parameters ... You will throw money in the mud a few times, maybe it will be good science ...

    I don't like Rigol because the ad you had recommended Keysight Edu ... more than rigol, 2 channels, less memory ... definitely better soft. Possibly rohde & schwarz hmo1202, but unfortunately these are variants for a higher price. I don't want to talk about the cheaper ones because it's a waste of time. If there was something more sensible than the advertised Rigol for these 2k zlotys, I would buy myself, as you know better, why ask - just buy ...
  • #34 16693174
    WX3V
    Level 18  
    Posts: 250
    Help: 28
    Rate: 95
    If I were you, I would look for contacts to people who service measuring devices. Since you are from Warsaw, you will probably be closest to @rubens. His website is http://rubi.republika.pl/.
    You will be able to discuss with him what you need and possibly repair the damaged oscilloscope. Even if he does not have exactly the equipment you require, you can make an appointment with him to look for one on the internet.
    Greetings.
  • #35 17382148
    dziekan_tek
    Level 15  
    Posts: 162
    Help: 2
    Rate: 47
    Hi,

    I don't know if this article will help you, but I think it's worth reading:
    https://ep.com.pl/files/2598.pdf

    Personally, for amateur purposes, I bought a Hantek DSO1062B (2x60 MHz) at gotronik.pl, but I will pass the review as soon as I receive it ;-)

    greetings
    Darek
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  • #36 17409215
    Thorgus
    Level 12  
    Posts: 578
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    I bought the RIGOLA DS1054Z for PLN 850 and I think it is worth paying extra
  • #37 17410473
    Jawi_P
    Level 36  
    Posts: 3230
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    Thorgus wrote:
    I bought the RIGOLA DS1054Z for PLN 850 and I think it is worth paying extra

    But the drug?
    And the second thing, the 6022B is not an oscilloscope compared to the Rigol.
    These are two different classes of equipment.
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  • #38 17410541
    Thorgus
    Level 12  
    Posts: 578
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    Rate: 53
    850 PLN for an oscilloscope, not an oscilloscope-like product
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Topic summary

✨ The discussion revolves around the Hantek 6022BE 2x20MHz oscilloscope, with users expressing mixed opinions on its suitability for basic diagnostics, particularly in converters. Some users caution against its limitations, such as the lack of AC mode and inadequate sampling rates, suggesting that it may not be reliable for serious repairs. Others argue that for the price (under PLN 200), it could serve basic needs, especially for hobbyists. Recommendations for alternatives include older analog oscilloscopes and models from Rigol, which are perceived to offer better performance despite higher costs. Users emphasize the importance of understanding the limitations of low-cost digital oscilloscopes and suggest considering repairs or waiting to invest in better equipment.
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FAQ

TL;DR: 48 MSa/s means the Hantek 6022BE resolves only ≈4.8 MHz of real detail (10:1 rule), and “it’s a toy, not a measuring device” [Elektroda, tplewa, post #16667857] Buyers report paying < PLN 200 online [Elektroda, rsv6, post #16666422] Why it matters: Mis-matched expectations risk wrong diagnoses and blown USB ports.

Quick Facts

• Claimed bandwidth: 20 MHz, but sampler is 48 MSa/s → practical ≈5 MHz [Elektroda, pawelr98, post #16666541] • Channels: 2, 8-bit resolution, PC-software driven (Windows/Linux) – Hantek datasheet. • Price range: PLN 180–300 used/new on eBay [Elektroda, rsv6, post #16666422] [Elektroda, rsv6, post #16667768] • Coupling: DC only; lacks built-in AC mode [Elektroda, pawelr98, post #16666541] • Isolation: USB-powered, no galvanic isolation—extra caution on mains work [Elektroda, zdzisiek1979, post #16671745]

What is the real usable bandwidth of the Hantek 6022BE?

With 48 MSa/s you get about 4.8 MHz of reliable bandwidth using the 10-samples-per-cycle rule; above that, waveforms are heavily reconstructed and inaccurate [Elektroda, pawelr98, post #16666541]

Why does the spec say 20 MHz if it only shows ~5 MHz accurately?

The 20 MHz label reflects the analogue front-end, not the digital sampler. The converter captures only two samples per cycle at 20 MHz, so software must guess the shape, producing “pure fantasy” pictures [Elektroda, zdzisiek1979, post #16671745]

How can I add AC coupling safely?

  1. Insert a 100 nF, 400 V polypropylene capacitor in series with the probe’s signal line. 2. Keep the probe’s ground lead short. 3. Re-calibrate the scope with a 1 kHz square-wave source after fitting [Elektroda, zdzisiek1979, post #16671745]

Is the 6022BE suitable for diagnosing inverter circuits?

Only for low-frequency sections (<1 MHz). Lack of AC coupling, no isolation, and limited bandwidth make it risky for switching-node work [Elektroda, tplewa, post #16666567]

How does it compare with an old 20 MHz analog scope?

Good analog units often exceed their spec by 30 % and show real-time signals without aliasing [Elektroda, pawelr98, post #16666541] They also survive overloads better and don’t rely on a PC, but they are bulkier and use aging CRTs.

What’s a common price for a working analog 20–25 MHz oscilloscope in Poland?

Forum users report finding two-channel 20–25 MHz analog scopes on OLX for PLN 180–250 [Elektroda, Jawi_P, post #16671258]

Is the Rigol DS1054Z a step up?

Yes. It offers 250 MSa/s on 4 channels and 24 Mpts memory for ≈PLN 1 700 new, and even PLN 850 used [Elektroda, Thorgus, post #17410541] That gives ~25 MHz true bandwidth per Nyquist rule and serial-decode options.

What edge-case can damage the 6022BE or my laptop?

Connecting the USB-powered scope to non-isolated mains or inverter nodes can create a ground loop that fries the scope and the computer [Elektroda, zdzisiek1979, post #16671745]

Can the CRT in an analog scope be replaced if it dies?

Usually yes. Replacement CRTs from donor units cost modestly, and service manuals list compatible part numbers [Elektroda, pawelr98, post #16668161]

How do I verify if my 6022BE meets its spec?

  1. Feed a 1 MHz, 2 Vpp sine-wave from a function generator. 2. Increase frequency until amplitude drops −3 dB; note that point. 3. Repeat on both channels. The −3 dB point shows effective bandwidth; many units flatten near 5 MHz [Elektroda, Wx3V, post #16672244]

Are there better USB scopes under PLN 500?

No forum contributor provided a reliable model under that price. Expert quote: “Digital gear that works without problems requires quite a lot of money” [Elektroda, tplewa, post #16666567]
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