xtrx-sdr / images

Pre-built XTRX packages and firmware images
https://www.crowdsupply.com/fairwaves/xtrx
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SoapyXTRX opens tx stream before actual burst #30

Open b3sholt opened 5 years ago

b3sholt commented 5 years ago

Hello all, I noticed somthing strange today when trying to use GRC with my xtrx. When I use the test_xtrx command and look at the output, I get a strong tone that starts and stops cleanly. But, when I try to use the osmocom Sink, it appears that SoapySDR 'hangs' for almost 10 seconds on SoapyXTRX::activateStream(TX) 0 Samples per packet; res = 0, and then transmits my actual desired burst. The real problem is that during this 'hanging' state, the xtrx is actually outputting RF energy. I have attached two pictures. Both are screenshots captured on a B205-mini.


test_xtrx -T -S4e6 -l2 -C5000 -L1000 -F 300000000

test_xtrx_transmit

Custom flowgraph - you can see the burst, but before that a tone is present for nearly 10 seconds

grc_transmit