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).
Configuring the Device
Setting Up the Network (Ethernet Only)
The device communicates with a host computer over gigabit Ethernet. Set up the network to
enable communication with the device.
Note
The IP addresses for the host computer and each connected USRP device
must be unique.
Configuring the Host Ethernet Interface with a Static IP Address
The default IP address for the USRP device is
192.168.10.2
.
1.
Ensure the host computer uses a static IP address.
You may need to modify the network settings for the local area connection using the
Control Panel on the host computer. Specify the static IP address in the
Properties
page
for Internet Protocol Version 4 (TCP/IPv4).
2.
Configure the host Ethernet interface with a static IP address on the same subnet as the
connected device to enable communication, as shown in the following table.
Table 1. Static IP Addresses
Component
Address
Host Ethernet interface static IP address
192.168.10.1
Host Ethernet interface subnet mask
255.255.255.0
Default USRP device IP address
192.168.10.2
Note
NI-USRP uses user datagram protocol (UDP) broadcast packets to
locate the device. On some systems, the firewall blocks UDP broadcast packets.
NI recommends that you change or disable the firewall settings to allow
communication with the device.
Changing the IP Address
To change the USRP device IP address, you must know the current address of the device, and
you must configure the network.
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USRP-2920/2921/2922 Getting Started Guide
