If you are not sure which USRP®  radio devices are connected to your computer, you can use a helper function to find them.
Type the following at the MATLAB® command line:
radios = findsdru
radios, is a structure that
contains information on the USRP® radios connected to the host
If you get a successful status, it means that MATLAB can communicate with the USRP® radio and the radio is ready to be used.
If the function cannot find a radio, MATLAB returns
an empty IPAddress field or a status other than
See the section on Common Problems and Fixes for possible causes and
If the function finds one or more radios, MATLAB displays a message similar to the following.
The IPAddress field is the IP address of the USRP® radio.
The Status field is the status of the radio. Type
the command window and press enter to see status value.
In this example, the USRP® IP address is 192.168.10.2 and
its status is
USRPDriverSuccess. The successful
status indicates that MATLAB can communicate with the USRP® radio
and the radio is ready to be used.
If you encounter difficulties communicating with the radio from MATLAB, see Common Problems and Fixes.
The displayed screen includes messages from the UHD™ driver,
--- begin libuhd driver construction output
--- end libuhd driver construction output
--- begin libuhd status message output --- and
end libuhd status message output ---. These messages are
usually benign, but in some cases they may refer to steps that you
can take to increase the performance of the USRP® radio connection.
Follow the recommended steps when suitable. You can also refer to
the section Common Problems and Fixes.
After you have found radios attached to your computer, you can
use the function
get detailed information about a particular USRP® radio.
 USRP, USRP2, UHD, and Ettus Research are trademarks of National Instruments Corp.