To generate the signal using an NI device, click the Instrument tab and the Download & Play option.
![image.png](/servlet/rtaImage?eid=ka03q0000012nUJ&feoid=00N3q00000HUsuH&refid=0EM3q0000036uGI)
Then, select the device using the Device Name drop-down menu and the Carrier Frequency with the Center Frequency property. In this example, a first-generation Vector Signal Transceiver PXIe-5644R is connected in a loopback. A 2 GHz center frequency is chosen. Finally, click the Create & Play button to generate the combined signal.
![image.png](/servlet/rtaImage?eid=ka03q0000012nUJ&feoid=00N3q00000HUsuH&refid=0EM3q0000036uG4)
You can use the RFmx Soft Front Panel to analyze the spectrum of the received signal. See below the final result.
![image.png](/servlet/rtaImage?eid=ka03q0000012nUJ&feoid=00N3q00000HUsuH&refid=0EM3q0000036uGh)