| Products > Test Equipment |
| Hantek 6074BC: Surprising results |
| (1/1) |
| BillyO:
Hantek should just stick to making cheap USB scopes. They seem do a decent enough job at that. Here is a screen shot from a ~$200 6074BC, supposedly 70Mhz 4ch. USB scope, with a sweep time of 5ns/div. It shows a 10% to 90% rise time of 2.3ns! According to this page at Tektronix: https://www.tek.com/en/support/faqs/how-bandwidth-related-rise-time-oscilloscopes#:~:text=Historically%2C%20oscilloscope%20frequency%20response%20tended,Bandwidth%20x%20rise%20time%20%3D%200.45. That equates to a bandwidth of .45/2.3 GHz or ~ 190MHz! Did I get something wrong or are these cheap scopes highly underrated? |
| thm_w:
As you noticed here: https://www.eevblog.com/forum/testgear/hantek6074bc-hack-to-250mhz/ Its the same hardware as in the 250MHz model, and sample rate is 1GS/s, so its not too surprising. |
| BillyO:
I guess with Hantek's apparent quality control it's not such a stretch to have a few that are software configured for 200MHz to 'leak' out as a 70MHz units. |
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