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2c42 bandwidth problem

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Post time 2021-4-29 21:52:49 | Show all posts |Read mode
Edited by fsHantek at 2021-4-29 21:58

Hello,

I ordered the 2c42 handheld scope from Aliexpress Hantek Official Store:
https://www.aliexpress.com/store/2792111

I received it this week, but I found out that the bandwidth is very poor, nowhere near the advertised 40MHz.
I attach three pictures.

1. the scope probe was adjusted at 1kHz to give a good square wave


2. at 50kHz the square wave is already distorted



3. at 100kHz even worse



A 40 MHz scope should give good square wave result up to 4 MHz !!

This is max. 500 kHz bandwidth graciously !

Did I get a bad sample?


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Post time Yesterday 14:23 | Show all posts
Hi, what test line do you use to test square wave?
Have you used another oscilloscope for comparison test?
Please give me more pictures to study.

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