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]
Does the 6022BE provide AC coupling?
No. Both inputs are DC-coupled. Users must add a series capacitor if they need AC mode [Elektroda, pawelr98, post #16666541]
How can I add AC coupling safely?
- 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?
- 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]
