USRP x300 | Power level adjustment

[Mondaybasit1.]

Hi, I want to know what is the meaning of "db", e.g 30db, 70db and its effects in usrp. Secondly, how can I change the power level in usrp. I want to try modulation/ demodulation of 64QAM, but I am not getting the correct constellation image after equalization at the receiver side. I am using 1G Eth.

[anasei]

Dear ,

db - is decibel, you can follow this link : https://www.britannica.com/science/decibel and know about it more.

You can also take a look at this forum case : https://forums.ni.com/t5/USRP-Software-Radio/audio-transmission-example-using-USRP/td-p/3079056. 

I think this two links will help you a lot!

best,

anasei.

[Mondaybasit1.]

In usrp library there is a TX/RX gain which ranges from 0-90, what is this factor reflects to in db?

[anasei]

TX- Transmitting pin

RX - Receiving pin

These two indicate whether your pin is receiving a signal or sending. You should configure them based on your project.

 I suggest you looking at USRP communication protocol's working way. It'll make all clear.

best,

anasei.