Author Topic: Hantek 6074BC: Surprising results  (Read 1239 times)

0 Members and 1 Guest are viewing this topic.

Offline BillyOTopic starter

  • Super Contributor
  • ***
  • Posts: 1847
  • Country: ca
Hantek 6074BC: Surprising results
« on: November 22, 2022, 04:42:25 pm »
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?

Bill  (Currently a Siglent fanboy)
--------------------------------------------------
 

Offline thm_w

  • Super Contributor
  • ***
  • Posts: 7521
  • Country: ca
  • Non-expert
Re: Hantek 6074BC: Surprising results
« Reply #1 on: November 23, 2022, 12:58:00 am »
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.
Profile -> Modify profile -> Look and Layout ->  Don't show users' signatures
 

Offline BillyOTopic starter

  • Super Contributor
  • ***
  • Posts: 1847
  • Country: ca
Re: Hantek 6074BC: Surprising results
« Reply #2 on: November 23, 2022, 01:10:54 am »
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.
Bill  (Currently a Siglent fanboy)
--------------------------------------------------
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf