On 01/15/2021 02:27 AM, Hai Nguyen via USRP-users wrote:
Hello,
I'm trying to transmit complex samples (e.g. BPSK chips) using B210
and GNUradio. My flowgraph is very simple: A file source connected to
a USRP sink (cpu format fc64), sample rate is 1e6. However the USRP
seems not to transmit anything (no red light, and nothing on the
spectrum) and also there is no error message. I tried with various
gain values but still saw nothing.
I tried the same thing with an X310 and it worked fine. What would be
the cause for the B210 and are there any ways I can make it work?
Thank you,
Hai
What does:
uhd_usrp_probe --args type=b200
GIve you?
What TX gain setting are you using? The devices based on AD9361 have
an unusually large gain-control range, going up to about 80dB.
So if you're used to gain range stopping at 31.5dB, you'll be "low"
by about 50dB.
What frequency? The B210 can tune from about 70Mhz to 6GHz.
m
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