JYE Tech Forum

I pretty much finished my project. After having replaced a defective crystal the DSO is booting correctly and all voltages are ok. However now I see that any signal I put at the input of the DSO is overlapped with a strange kind of square wave. I investigated that in more detail using a triangle wav...

I also had a bad crystal resulting in a failed powering-up test 1. When I replaced the crystal the test was passed successfully. Look slike this is a critical bad quality component.