<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px"><div id="yiv5448317740"><div id="yui_3_16_0_1_1438120390417_35711"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;" id="yui_3_16_0_1_1438120390417_35710"><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492"><span id="yui_3_16_0_1_1438120390417_37772">That worked. Thanks a lot. When I run the line ./latency_test, it says</span></div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492"><span id="yui_3_16_0_1_1438120390417_37773"><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class=""> </div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class="">"USRP1 cannot achieve decimations below 8 when the half-band filter is present.</div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class="">    The usrp1_fpga_4rx.rbf file is a special FPGA image without RX half-band filters.</div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class="">    To load this image, set the device address key/value pair: fpga=usrp1_fpga_4rx.rbf".</div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class=""><br></div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class="">I have already loaded the firmware and fpga images but the above line occurs. Please help</div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class=""><br></div><div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_27492" class="">Thanks</div><div dir="ltr" class="" id="yui_3_16_0_1_1438120390417_37776"><br class=""></div></span></div>  <br clear="none"><div class="yiv5448317740qtdSeparateBR" id="yui_3_16_0_1_1438120390417_35712"><br clear="none"><br clear="none"></div><div class="yiv5448317740yqt9744854306" id="yiv5448317740yqt23218"></div></div></div></div><div class=".yiv5448317740yahoo_quoted"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"> <div dir="ltr"> <font size="2" face="Arial"> On Tuesday, 28 July 2015 5:02 PM, Marcus Müller <marcus.mueller@ettus.com> wrote:<br clear="none"> </font> </div>  <br clear="none"><br clear="none"> <div class="yiv5448317740y_msg_container"><div id="yiv5448317740"><div>
    You need to uninstall all these three packages.<br clear="none">
    <br clear="none">
    <div class="yiv5448317740yqt5808779360" id="yiv5448317740yqt33935"><div class="yiv5448317740moz-cite-prefix">On 29.07.2015 00:01, Vsr Ravi wrote:<br clear="none">
    </div>
    <blockquote type="cite">
      <div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
        <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_3668"><span id="yiv5448317740yui_3_16_0_1_1438120390417_4932">I see that the libuhd,
            libuhd003 and uhd-host packages have been installed from the
            software center but the uhd folder has not been installed.
            So can you please suggest me as to what I can do further.
            Sorry for this as I am new to using this USRP .</span></div>
        <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_3668"><span><br clear="none">
          </span></div>
        <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_3668">Thanks,</div>
        <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438120390417_3668">Ravi</div>
        <br clear="none">
        <div class="yiv5448317740qtdSeparateBR"><br clear="none">
          <br clear="none">
        </div>
        <div class="yiv5448317740yahoo_quoted" style="display:block;">
          <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
            <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;">
              <div dir="ltr"> <font face="Arial" size="2"> On Tuesday,
                  28 July 2015 4:48 PM, Marcus Müller
                  <a rel="nofollow" shape="rect" class="yiv5448317740moz-txt-link-rfc2396E" ymailto="mailto:marcus.mueller@ettus.com" target="_blank" href="mailto:marcus.mueller@ettus.com"><marcus.mueller@ettus.com></a> wrote:<br clear="none">
                </font> </div>
              <br clear="none">
              <br clear="none">
              <div class="yiv5448317740y_msg_container">
                <div id="yiv5448317740">
                  <div> Don't go around deleting arbitrary folders!<br clear="none">
                    That UHD got there some way -- either from a
                    previous run of building and installing UHD, or via
                    the package manager of your linux.<br clear="none">
                    If the latter is the case, that's exactly the way it
                    should be removed.<br clear="none">
                    Please check that no uhd, libuhd, libuhd3 or
                    uhd-host packages are installed.<br clear="none">
                    <br clear="none">
                    Best regards,<br clear="none">
                    Marcus<br clear="none">
                    <br clear="none">
                    PS: on unix systems, program/libraries and user data
                    is typically kept isolatedly, so don't worry about
                    losing any work.<br clear="none">
                    <div class="yiv5448317740yqt0601251775" id="yiv5448317740yqt69365">
                      <div class="yiv5448317740moz-cite-prefix">On
                        28.07.2015 23:43, Vsr Ravi wrote:<br clear="none">
                      </div>
                      <blockquote type="cite">
                        <div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                          <div id="yiv5448317740yui_3_16_0_1_1438118657733_24562"><span>Hi
                              Marcus,</span></div>
                          <div id="yiv5448317740yui_3_16_0_1_1438118657733_24550"><span id="yiv5448317740yui_3_16_0_1_1438118657733_24549">Thanks for the reply.
                              I guess I need to delete one UHD folder.
                              Is it possible to delete any UHD folder,
                              or will be the information be lost if I
                              perform this operation on any of the
                              folder of UHD?</span></div>
                          <div id="yiv5448317740yui_3_16_0_1_1438118657733_24550"><span><br clear="none">
                            </span></div>
                          <div id="yiv5448317740yui_3_16_0_1_1438118657733_24550"><span>Regards,</span></div>
                          <div id="yiv5448317740yui_3_16_0_1_1438118657733_24550"><span>Ravi</span></div>
                          <br clear="none">
                          <div class="yiv5448317740qtdSeparateBR"><br clear="none">
                            <br clear="none">
                          </div>
                          <div class="yiv5448317740yahoo_quoted" style="display:block;">
                            <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                              <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;">
                                <div dir="ltr"> <font face="Arial" size="2"> On Tuesday, 28 July 2015
                                    4:34 PM, Marcus Müller <a rel="nofollow" shape="rect" class="yiv5448317740moz-txt-link-rfc2396E" ymailto="mailto:marcus.mueller@ettus.com" target="_blank" href="mailto:marcus.mueller@ettus.com"></a><a rel="nofollow" shape="rect" class="yiv5448317740moz-txt-link-rfc2396E" ymailto="mailto:marcus.mueller@ettus.com" target="_blank" href="mailto:marcus.mueller@ettus.com"><marcus.mueller@ettus.com></a>
                                    wrote:<br clear="none">
                                  </font> </div>
                                <br clear="none">
                                <br clear="none">
                                <div class="yiv5448317740y_msg_container">
                                  <div id="yiv5448317740">
                                    <div> Hi Ravi,<br clear="none">
                                      <br clear="none">
                                      you seem to have two different,
                                      competing UHD installations, one
                                      in /usr/local/, and one in /usr/.<br clear="none">
                                      <br clear="none">
                                      Make sure you only have one.
                                      Again, it's important that you
                                      remove all other UHDs from your
                                      system before you install your
                                      self-built UHD.<br clear="none">
                                      <br clear="none">
                                      Best regards,<br clear="none">
                                      Marcus<br clear="none">
                                      <br clear="none">
                                      <div class="yiv5448317740yqt4748894352" id="yiv5448317740yqt33892">
                                        <div class="yiv5448317740moz-cite-prefix">On

                                          28.07.2015 23:31, Vsr Ravi
                                          wrote:<br clear="none">
                                        </div>
                                        <blockquote type="cite">
                                          <div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                                            <div id="yiv5448317740">
                                              <div id="yiv5448317740yui_3_16_0_1_1438118657733_10844">
                                                <div id="yiv5448317740yui_3_16_0_1_1438118657733_10843" style="background-color:rgb(255,                                                   255, 255);">
                                                  <div id="yiv5448317740yui_3_16_0_1_1438118657733_5349" style="color:rgb(0,                                                     0,                                                     0);font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:13px;"><span id="yiv5448317740yui_3_16_0_1_1438118657733_7301">Hi,</span></div>
                                                  <div id="yiv5448317740yui_3_16_0_1_1438118657733_5349" style="color:rgb(0,                                                     0,                                                     0);font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:13px;"><span id="yiv5448317740yui_3_16_0_1_1438118657733_7300">Thanks for the
                                                      suggestions that
                                                      you have given.
                                                      But I have
                                                      encountered a
                                                      problem. Whenever
                                                      I run the file of
                                                      Latency_test
                                                      located in
                                                      /usr/lib/uhd/examples,
                                                      I get the error as</span></div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">Error:

                                                    LookupError:
                                                    IndexError:
                                                    multi_usrp::mb_root(140725369489696)
                                                    -
                                                    vector::_M_range_check<br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">And

                                                    when I run
                                                    "test_messages"
                                                    command, it shows </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">Segmentation

                                                    fault (core dumped)<br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">Please

                                                    suggest as to what I
                                                    can do to prevent
                                                    the above errors.
                                                    Thank you </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">Regards,</div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349">Ravi</div>
                                                  <div dir="ltr" id="yiv5448317740yui_3_16_0_1_1438118657733_5349"><br clear="none">
                                                  </div>
                                                  <br clear="none">
                                                  <div class="yiv5448317740qtdSeparateBR" id="yiv5448317740yui_3_16_0_1_1438118657733_10845" style="color:rgb(0,                                                     0,                                                     0);font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:13px;"><br clear="none">
                                                    <br clear="none">
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                            <div>
                                              <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                                                <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;">
                                                  <div dir="ltr"> <font face="Arial" size="2"> On
                                                      Tuesday, 28 July
                                                      2015 4:28 AM,
                                                      Marcus Müller <a rel="nofollow" shape="rect" class="yiv5448317740moz-txt-link-rfc2396E" ymailto="mailto:marcus.mueller@ettus.com" target="_blank" href="mailto:marcus.mueller@ettus.com"></a><a rel="nofollow" shape="rect" class="yiv5448317740moz-txt-link-rfc2396E" ymailto="mailto:marcus.mueller@ettus.com" target="_blank" href="mailto:marcus.mueller@ettus.com"><marcus.mueller@ettus.com></a>
                                                      wrote:<br clear="none">
                                                    </font> </div>
                                                  <br clear="none">
                                                  <br clear="none">
                                                  <div class="yiv5448317740y_msg_container">
                                                    <div id="yiv5448317740">
                                                      <div> Hi Ravi,<br clear="none">
                                                        <br clear="none">
                                                        <div class="yiv5448317740yqt5762129953" id="yiv5448317740yqtfd54291">
                                                          <div class="yiv5448317740moz-cite-prefix">On


                                                          28.07.2015
                                                          00:55, Vsr
                                                          Ravi wrote:<br clear="none">
                                                          </div>
                                                          <blockquote type="cite">
                                                          <div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                                                          <div id="yiv5448317740">
                                                          <div id="yiv5448317740yui_3_16_0_1_1438033179424_45251">
                                                          <div id="yiv5448317740yui_3_16_0_1_1438033179424_45250" style="background-color:rgb(255,                                                           255, 255);">
                                                          <div id="yiv5448317740yui_3_16_0_1_1438033179424_27038">
                                                          <div class="yiv5448317740" id="yiv5448317740yui_3_16_0_1_1438033179424_27038" style="color:rgb(0,                                                           0,                                                           0);font-family:HelveticaNeue, 'Helvetica                                                           Neue', Helvetica, Arial, 'Lucida                                                           Grande', sans-serif;font-size:13px;"><span class="yiv5448317740" id="yiv5448317740yui_3_16_0_1_1438033179424_40595">Hey


                                                          all,</span></div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038" style="color:rgb(0,                                                           0,                                                           0);font-family:HelveticaNeue, 'Helvetica                                                           Neue', Helvetica, Arial, 'Lucida                                                           Grande', sans-serif;font-size:13px;"><span class="yiv5448317740" id="yiv5448317740yui_3_16_0_1_1438033179424_28134">I
                                                          have tried to
                                                          run the USRP1
                                                          by giving the
                                                          command "sudo
                                                          uhd_usrp_probe
                                                          and I get the
                                                          result as
                                                          below.</span></div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038" style="color:rgb(0,                                                           0,                                                           0);font-family:HelveticaNeue, 'Helvetica                                                           Neue', Helvetica, Arial, 'Lucida                                                           Grande', sans-serif;font-size:13px;"><span class="yiv5448317740"><br clear="none">
                                                          </span></div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038"><span class="yiv5448317740" id="yiv5448317740yui_3_16_0_1_1438033179424_46858">
                                                          </span>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038">linux;

                                                          GNU C++
                                                          version 4.8.4;
                                                          Boost_105500;
UHD_003.009.git-144-g407e3086</div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038"><br clear="none" class="yiv5448317740">
                                                          </div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038">--

                                                          Opening a
                                                          USRP1
                                                          device...</div>
                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038">--

                                                          Loading FPGA
                                                          image:
                                                          /usr/local/share/uhd/images/usrp1_fpga.rbf...
                                                          done</div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          ... </div>
                                                        <blockquote type="cite">
                                                          <div class="yiv5448317740yqt5762129953" id="yiv5448317740yqtfd79234"> </div>
                                                          <div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:13px;">
                                                          <div class="yiv5448317740yqt5762129953" id="yiv5448317740yqtfd39437"> </div>
                                                          <div id="yiv5448317740">
                                                          <div class="yiv5448317740yqt5762129953" id="yiv5448317740yqtfd07488"> </div>
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                                                          <div class="yiv5448317740" dir="ltr" id="yiv5448317740yui_3_16_0_1_1438033179424_27038">Can

                                                          anyone please
                                                          tell what this
                                                          means and what
                                                          do I do next
                                                          as I am new to
                                                          gnuradio.
                                                          Thanks</div>
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                                                        As Martin said:
                                                        Both your USRP
                                                        as your UHD
                                                        installation
                                                        work pretty
                                                        well!<br clear="none">
                                                        The only thing
                                                        is that you need
                                                        to run it as
                                                        root (the sudo
                                                        part), and
                                                        that's not a
                                                        good thing.<br clear="none">
                                                        Can you make
                                                        sure that
                                                        /etc/udev/rules.d/
                                                        contains the
                                                        uhd.rules
                                                        file[1]? If not,
                                                        copy it over
                                                        from
                                                        /usr/local/lib/uhd/utils/uhd-usrp.rules,
                                                        e.g. like<br clear="none">
                                                        sudo cp
                                                        /usr/local/lib/uhd/utils/uhd-usrp.rules
/etc/udev/rules.d/<br clear="none">
                                                        <br clear="none">
                                                        and then reboot.<br clear="none">
                                                        <br clear="none">
                                                        The next time
                                                        you plug in your
                                                        USRP, it should
                                                        no longer be
                                                        only accessible
                                                        by root.<br clear="none">
                                                        <br clear="none">
                                                        Best regards,<br clear="none">
                                                        Marcus<br clear="none">
                                                        <br clear="none">
                                                        [1] You said
                                                        earlier you did<br clear="none">
                                                        <pre class="yiv5448317740" id="yiv5448317740yui_3_16_0_1_1437774575665_3858" style="border:1px solid rgb(196, 207, 229);padding:4px 6px;margin:4px 8px 4px 2px;overflow:auto;word-wrap:break-word;line-height:18.375px;font-family:monospace, fixed;font-size:14.6999998092651px;background-color:rgb(251, 252, 253);">cd usr/lib/uhd/utils
sudo cp uhd-usrp.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules
sudo udevadm trigger</pre>
                                                        but that's not
                                                        the right path,
                                                        if uhd is
                                                        installed to
                                                        /usr/local/...
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