Synchronizing Multiple Devices (Optional)

You can connect two USRP devices so that they share clocks and the Ethernet connection to the host.

  1. Connect the MIMO cable to the MIMO EXPANSION port of each device.

    1378

  2. If you have not already done so, attach antennas to the USRP devices.
    If you want to use one USRP device as a receiver and the other as a transmitter, attach one antenna to the RX 1 TX 1 port of the transmitter, and attach another antenna to the RX 2 port of the receiver.
The NI-USRP driver ships with some examples that you can use to explore the MIMO connection, including USRP EX Rx Multiple Synchronized Inputs (MIMO Expansion) and USRP EX Tx Multiple Synchronized Outputs (MIMO Expansion).