Dear JhonYF,
for your question, please download and refer to the AN12913 "MC33771A and MC33774A measurement". The measuring modes are thoroughly described there.
Please download the AN12913 from the MC33774 product page, under the Secure section.
Please note, that to be able to download the confidential documents, you need to have a valid NDA (Non Disclosure Agreement) with NXP and you need to be registered on nxp.com. If your company doesn't have the NDA yet, and you would like to sign one, please apply here.
With Best Regards,
Jozef
