Help : UHD

 

Hello,

 

i want to implement a FMCW-Radar  in a frequency-chirp. First i tested the frequency-chirp . I send the chirp from TX to RX of my USRP.

I get this warning :

 

UHD Warning:
    For this connection, UHD recommends a receive frame size of at least 8000 for best
    performance, but your system's MTU will only allow 1472.
    This will negatively impact your maximum achievable sample rate.
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
>>> Done

 

My constellation- and time gui looks unlikely (see attachment) on the top ist TX and the bottom ist RX.

 

Does anybody has a solution for this?

 

 best regards,

Till