Tutorials: Flat Power Trace


#1

Hi there, I’ve attempted tutorial B1, B2, and A3 but have consistently seen a nearly flat power trace. The data captured in tutorial A3 ranged from -0.003 to -0.001. Possibly unrelated, but the “Expected” value in the “Encryption Status Monitor” is always “?”. I am using a ChipWhisperer Lite with an XMEGA board connected via a 20-pin ribbon cable and ChipWhisperer Capture V3.5.4.

Any suggestions would be greatly appreciated!


#2

Hi moconell,
I went over the tutorial, is it possible that you did not set your gain setting to 40. Let me know if this changes things for you.
Kind Regards,
Franz