HS - ADC, rare signal observed.

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 18, 2016 by lpcware
Content originally posted in LPCWare by rodri on Wed Apr 27 10:40:53 MST 2016

I'm sampling a ramp signal with 50% of simmetry, but when I pass it to the PC and plot it with matlab I observe a rare signal.

(attached the images)

As you can see the triangular shape (that corresponds to the one I'm sampling) seems to be the envelope of a faster ramp. This second ramp has a positive pendent when the triangular signal is increasing the value, and negative when the triangular is going low.

Anybody have an idea about what is hapening?

thanks in advance