How to receive a sine wave signal from USRP2?

I am a student using the USRP N210 for the first time.

I have a USRP N210 with the LFRX daughter board. I am using Matlab to communicate with the USRP. Right now I am trying to familiarize myself with the USRP.

Using a signal generator, I am feeding a simple sine wave at around 2Mhz, 0dBm. I am trying to write a simple Matlab program that will be able to read the received sine wave through the USRP and plot it. I am having trouble producing the correct code to do so. Would the code below be in the right direction? Thanks.

RXObj = comm.SDRuReceiver(findsdru, ...
    'CenterFrequency',  2e6, ...
    'DecimationFactor', 100, ...
    'OutputDataType',   'double')
SigLog = dsp.SignalSink;
SigCount = 0;
while 1
  % Get samples from RX at 100MHz/100 sample rate
  [x, len] = step(RXObj);

    if len > 0
        step(SigLog, x)   
        SigCount = SigCount + 1;
    end

    if SigCount > 2000
        break
    end
  end

data = SigLog.Buffer; %put logged data into array

release(hSDRu);

Now, this code just outputs complex doubles of really small magnitudes to data.

0.00000000000000 + 0.00000000000000i
0.00000000000000 + 0.00000000000000i
0.00000000000000 + 0.00000000000000i
0.00000000000000 + 3.05185094759972e-05i
6.10370189519944e-05 + 3.05185094759972e-05i
0.00000000000000 + 3.05185094759972e-05i
0.00000000000000 + 3.05185094759972e-05i
0.00000000000000 + 0.00000000000000i
-3.05185094759972e-05 + 0.00000000000000i
-3.05185094759972e-05 - 3.05185094759972e-05i
-3.05185094759972e-05 + 0.00000000000000i
0.00000000000000 + 0.00000000000000i
-3.05185094759972e-05 + 0.00000000000000i

[ethan Miao]

I encoutered the same question.Have you solved it? Thank you

Answer 1

[wxd]

Hi Davis, I encouter the same question as you.Have you solved it? Thank you. Best regard, wxd