USRP2-XCVR2450Daughterboard First Program Error

GNU Radio
1

Deal all,
in Aalborg University we received last Thursday 3 USRP2 and 3
daughterboards
XCVR2450. We started to test them, by running usrp2_fft.py, and in a
first
moment the output was:

usrp2: channel 0 not receiving
usrp2::rx_sample() failed

then, according to the suggestions done to another user in this forum,
who
had the same problem, we updated the firmware and the FPGA images and we
partially solved the issue. Now it appears the FFT graphical sink, but
it
doesn’t appear the receiving peak at any of the frequencies in the range
2.4-2.5 GHz and 4.9-5.9 GHz, despite we are transmitting at several of
those
frequencies. Moreover, the following error appears:

get fences failed: -1
param:6, val:0

do you have any suggestion? please, let me know.

Best Regards,
Simone.

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2

Hi,

I think the get fences error is an OpenGL/Video Driver thing, I’ve seen
it
when using a laptop with an Intel GMA video chip and just ignored it as
things still seemed to work.

Can you see a noise floor?
Which RF Port are you using on the XCVR2450? (i.e tx/rx or rx only?)

Cheers,

Tim