I’ve recenty got two USRP N200 with SBX daughter boards. I have managed
to
transmit simple sine signal with one USRP but I have problems receiving
this signal. I dont see anything but noise in spectrum. I have measured
signal that I am transmiting with spectrum analyzer and I see a spike in
spectrum, so the transmiter must be working.
I am using UHD source and sink blocks as a “top layer” for USRP devices,
and WX GUI FFT block for displaying spectrum. Sine frequency is 1kHz and
I
am samping with 200kHz. I have set the center frequency on 500MHz. I
have
tried both antenna ports on receiving device.
I’ve recenty got two USRP N200 with SBX daughter boards. I have managed to
transmit simple sine signal with one USRP but I have problems receiving
Does that mean you have confirmed transmission with a spectrum analyzer?
this signal. I dont see anything but noise in spectrum. I have measured
signal that I am transmiting with spectrum analyzer and I see a spike in
spectrum, so the transmiter must be working.
I am using UHD source and sink blocks as a “top layer” for USRP devices,
and WX GUI FFT block for displaying spectrum. Sine frequency is 1kHz and I
am samping with 200kHz. I have set the center frequency on 500MHz. I have
tried both antenna ports on receiving device.
Is there some setting that I am missing?
Can you tell more information, or send your GRC flowgraph?
What frequency, what digital amplitude, gains, etc…
If I can make some suggestions:
Digital amplitude should be max magnitude 1.0, start with something
way lower like 0.3.
Use a larger sample rate, at least 1Msps. This can make it easier to
debug.