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| is Realy the Hantek USB "scope" ...that bad? |
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| finos:
Hello everyone ive been in the hobby sceene of ee for at least 10 years and from the very beggining when i was low budget and i needed a scope, the hantek usb scopes were considered crap... the years passed , i got my self a ds1054z (best vfm ever spent) and this got me into ee university. Now i realy had to downsize my lab,made my self a small set of instruments (lab psu , soldering station etc) but , the oScopes on the market are still bulky and expensive. I cannot justify getting a second rigol (or similar) for the projects i will do here , its too bulky and too expensive . Thus i turned my attention back to the hantek usb scopes . I mean ... they cant be that bad , they sould be able to "see" a uart or a slow analog signal ..right? |
| ataradov:
They have a wide range of models. Lower end models are really bad. More recent higher end models are decent. Enough to observe UART for sure. But their PC software is not everyone's cup of tea. So, I would download that and check if it has some demo mode or something like that to see if it works for you. But in a pinch, it is workable. |
| e100:
If you want cheap then for non-repetitive communications type signals a $20 USB logic analyser with the Pulseview program works OK. For analog signals in the audio range, a PC analog microphone input together with the Audacity software gives you a 20kHz storage scope. |
| Gyro:
--- Quote from: finos on August 25, 2022, 06:01:37 am ---I mean ... they cant be that bad , they sould be able to "see" a uart or a slow analog signal ..right? --- End quote --- It depends what you mean by bad. Yes they can handle low frequency stuff reliably without stressing USB streaming bandwidth or S/W triggering, but if you consider high noise level and lack of AC coupling, is that bad? (There is alternative s/w and a hack in the Hantek thread to add on AC coupling now. High noise is still an issue though). The other one to consider is the VDS1022I, it's more expensive, but has reliable H/W triggering, twice the sample rate, low noise, ok s/w (florentbr's alternative is pretty much perfect) and galvanic isolation. https://www.eevblog.com/forum/testgear/hantek-6022be-20mhz-usb-dso/ https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-(versus-the-hantek-6022be)/ Seconded on the $20 (I think you can get them closer to $10) 8 bit USB logic analyser. An ideal accompaniment for monitoring longer data streams. |
| Fungus:
You might be better off with something like this: https://www.eevblog.com/forum/testgear/fnirsi-1013d-100mhz-tablet-oscilloscope/msg3022032/#msg3022032 https://www.aliexpress.com/wholesale?SearchText=fnirsi+1013D If you want something really cheap to just "see if something is happening" at low frequencies then you can go with something like this: https://www.aliexpress.com/item/1005003839624513.html https://www.aliexpress.com/item/32973233356.html They're very limited and you won't enjoy using them, but they work. |
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