Hi diegoandrescuji,
Do you talk Spanish? If your answer is yes, here I have the following tutorial videos for the use of the USRP 2920.
Also at the description you can find the link to download the VIs and also the manual.
Remember that you can write here at the forums in Spanish.
https://decibel.ni.com/content/docs/DOC-40372
https://decibel.ni.com/content/docs/DOC-40361
https://decibel.ni.com/content/docs/DOC-40360
If you don't talk Spanish and only English tell me so I can search for content in English.
Greetings
Guillermo O.
National Instruments
Guillermo Oviedo
R&D Software Engineer
CLA | CTD