We are trying to estimate frequency offset between 2 ad9361's.We are using iio oscilloscope provided in sd card.We are transmitting sin samples(sinewave_0.6.mat) from one board and looking in the iio scope connected to the other board.
Is the voltage0 and voltage1 that iio scope shows are down converted samples(i.e baseband samples and voltage0 corresponds to I-samples of channel1 ).
but if we plot in frequency domain (together voltage0 and voltage1) the plot is around carrier frequency(LO frequency).
Please tell whether they are collected after down conversion.
We transmit 100 khz sine wave and see spectrum on other board if it is (LO frequency +100KHz+offset) is offset the frequency offset.
How do you make sure that communication happens between 2 devices?