RE: Does 2900 support RX in two antennas at the same time?

[Heartnode]

In device, there are two RX ports and one of them is also TX port. Is it able to receive signals at two different central frequencies with the same IQ rate and gain in one program?Thx!

And also am I able to  TX and RX at the same time in one program?

[Chan82 · Accepted solution]

Hi Heartnode,

1. Unfortunately, only one of two antennas of NI-USRP 2900 is available when you use NI-USRP as a receiver.

But, when you connect two rx cables to USRP 2900, you may observe additional rx signal from undesired rx port due to the leakage. Please refer to the following block diagram of USRP-2900:

http://www.ni.com/documentation/en/usrp-software-defined-radio-device/latest/usrp-2900/block-diagram...

2. You can only focus on a single carrier frequency at a time.

3. You can transmit and receive signals simultaneously. To check it, you can run two USRP examples in LabVIEW:

• niUSRP EX RX Continuous Async.vi
• niUSRP EX Tx Continuous Async.vi

If you install NI-USRP driver, you can find these examples:

On your block diagram of VI, do right-click --> Instrument I/O --> Instrument driver --> NI-USRP --> Examples

Thanks