<div dir="ltr">Virag -<div><br></div><div>Please refer to the USRP manual:</div><div><a href="http://files.ettus.com/manual/page_general.html#general_threading">http://files.ettus.com/manual/page_general.html#general_threading</a><br></div><div><br></div><div>It is not a critical error, but you may be able to improve performance.</div><div><br></div><div>Cheers,</div><div>Ben</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Dec 16, 2014 at 3:15 AM, Virag Varga via USRP-users <span dir="ltr"><<a href="mailto:usrp-users@lists.ettus.com" target="_blank">usrp-users@lists.ettus.com</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I'm quite new to the SDR world. I started with an USRP2 (r4) +<br>
XCVR2450 dboard. I tried some examples with gnuradio, but I'm still<br>
not sure, if everything is setup correctly (mostly it seems I'm only<br>
getting noise)..<br>
<br>
For start, I don't think I should get this output (no sign that my<br>
daughterboard is recognized correctly) for uhd_usrp_probe (check down<br>
below).<br>
<br>
Do I miss some installation/configuration steps?<br>
<br>
Thanks for any help!<br>
Bests,<br>
Virag<br>
<br>
<br>
<br>
$ uhd_usrp_probe<br>
linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.000-release<br>
<br>
-- Opening a USRP2/N-Series device...<br>
-- Current recv frame size: 1472 bytes<br>
-- Current send frame size: 1472 bytes<br>
<br>
UHD Warning:<br>
    Unable to set the thread priority. Performance may be negatively affected.<br>
    Please see the general application notes in the manual for instructions.<br>
    EnvironmentError: OSError: error in pthread_setschedparam<br>
  _____________________________________________________<br>
 /<br>
|       Device: USRP2 / N-Series Device<br>
|     _____________________________________________________<br>
|    /<br>
|   |       Mboard: USRP2 r4<br>
|   |   hardware: 1024<br>
|   |   mac-addr: 00:50:c2:85:39:47<br>
|   |   ip-addr: 255.255.255.255<br>
|   |   subnet: 255.255.255.255<br>
|   |   gateway: 255.255.255.255<br>
|   |   gpsdo: none<br>
|   |   serial: 2375<br>
|   |   FW Version: 12.4<br>
|   |   FPGA Version: 10.0<br>
|   |<br>
|   |   Time sources: none, external, _external_, mimo<br>
|   |   Clock sources: internal, external, mimo<br>
|   |   Sensors: mimo_locked, ref_locked<br>
|   |     _____________________________________________________<br>
|   |    /<br>
|   |   |       RX DSP: 0<br>
|   |   |   Freq range: -50.000 to 50.000 MHz<br>
|   |     _____________________________________________________<br>
|   |    /<br>
|   |   |       RX DSP: 1<br>
|   |   |   Freq range: -50.000 to 50.000 MHz<br>
|   |     _____________________________________________________<br>
|   |    /<br>
|   |   |       RX Dboard: A<br>
|   |   |     _____________________________________________________<br>
|   |   |    /<br>
|   |   |   |       RX Frontend: 0<br>
|   |   |   |   Name: Unknown (0xffff) - 0<br>
|   |   |   |   Antennas:<br>
|   |   |   |   Sensors:<br>
|   |   |   |   Freq range: 0.000 to 0.000 MHz<br>
|   |   |   |   Gain Elements: None<br>
|   |   |   |   Connection Type: IQ<br>
|   |   |   |   Uses LO offset: No<br>
|   |   |     _____________________________________________________<br>
|   |   |    /<br>
|   |   |   |       RX Codec: A<br>
|   |   |   |   Name: ltc2284<br>
|   |   |   |   Gain Elements: None<br>
|   |     _____________________________________________________<br>
|   |    /<br>
|   |   |       TX DSP: 0<br>
|   |   |   Freq range: -50.000 to 50.000 MHz<br>
|   |     _____________________________________________________<br>
|   |    /<br>
|   |   |       TX Dboard: A<br>
|   |   |     _____________________________________________________<br>
|   |   |    /<br>
|   |   |   |       TX Frontend: 0<br>
|   |   |   |   Name: Unknown (0xffff) - 0<br>
|   |   |   |   Antennas:<br>
|   |   |   |   Sensors:<br>
|   |   |   |   Freq range: 0.000 to 0.000 MHz<br>
|   |   |   |   Gain Elements: None<br>
|   |   |   |   Connection Type: IQ<br>
|   |   |   |   Uses LO offset: No<br>
|   |   |     _____________________________________________________<br>
|   |   |    /<br>
|   |   |   |       TX Codec: A<br>
|   |   |   |   Name: ad9777<br>
|   |   |   |   Gain Elements: None<br>
<br>
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</blockquote></div></div>