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    On 12/06/2014 10:18 PM, Dan Sego wrote:
    <blockquote
cite="mid:CALGEVjsGo9aCXfSU8Eaj=68-DZguWByuCa3Og=0bk7gHvuXAQg@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>Some progress Marcus.</div>
        <div><br>
        </div>
        <div>I removed power to the GPSDO and input_pps_test failed.
          This confirmed the board was working, at least in part. </div>
        <div><br>
        </div>
        <div>Removed the surrogate GPS antenna and left the SMA
          connection open (unterminated).</div>
        <div><br>
        </div>
        <div>Modified the compatibility of rx_multi_sample to Windows
          7/administrator (as I'm on Windows 8.1) and was able to get it
          to run on dual channels AND the GPSDO was detected.</div>
        <div><br>
        </div>
        <div>The runtime error (fifo timed out looking for acks) still
          occurred launching the .exe (either from uhd/examples or my
          c++). I was hoping that the compatibility change would solve
          that. Apparently not. The NIC, after adding the registry
          change to 1500 for FastSendDatagramThreshold, still has the
          transmit buffer at 128 and the receive buffer at 512 (which I
          am inhibited from increasing in the control panel). I'm not
          sending any timed commands at the point where the error occurs
          (having found this error referenced thus in the list
          archives), and since the error appears to occur in the
          usrp:make() instruction. </div>
        <div><br>
        </div>
        <div>cheers</div>
        <div>Dan</div>
        <div> </div>
      </div>
    </blockquote>
    That is good news about the GPSDO.<br>
    <br>
    Could you try a simple benchmark_rate test:<br>
    <br>
    UHD Benchmark Rate Allowed options:<br>
      --help                help message<br>
      --args arg            single uhd device address args<br>
      --duration arg (=10)  duration for the test in seconds<br>
      --rx_rate arg         specify to perform a RX rate test (sps)<br>
      --tx_rate arg         specify to perform a TX rate test (sps)<br>
      --rx_otw arg (=sc16)  specify the over-the-wire sample mode for RX<br>
      --tx_otw arg (=sc16)  specify the over-the-wire sample mode for TX<br>
      --rx_cpu arg (=fc32)  specify the host/cpu sample mode for RX<br>
      --tx_cpu arg (=fc32)  specify the host/cpu sample mode for TX<br>
      --mode arg (=none)    multi-channel sync mode option: none, mimo<br>
      --channels arg (=0)   which channel(s) to use (specify "0", "1",
    "0,1", etc)<br>
    <br>
        Specify --rx_rate for a receive-only test.<br>
        Specify --tx_rate for a transmit-only test.<br>
        Specify both options for a full-duplex test.<br>
    <br>
    <br>
    <blockquote
cite="mid:CALGEVjsGo9aCXfSU8Eaj=68-DZguWByuCa3Og=0bk7gHvuXAQg@mail.gmail.com"
      type="cite">
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Sat, Dec 6, 2014 at 3:20 PM, Marcus
          D. Leech <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:mleech@ripnet.com" target="_blank">mleech@ripnet.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
            0.8ex; border-left: 1px solid rgb(204, 204, 204);
            padding-left: 1ex;">
            <div text="#000000" bgcolor="#ffffff"><span> On 12/06/2014
                05:56 PM, Dan Sego wrote:
                <blockquote type="cite">
                  <div dir="ltr">Ii also occurs to me, given your PPS
                    response, that I was using a surrogate antenna for
                    the GPS, waiting for a female MCX to male
                    SMA adapter to connect a purpose built 3V antenna to
                    the unit. The antenna is one of the WA5VJB log
                    periodics?????  <br>
                  </div>
                </blockquote>
              </span> Those antenna are very directional, also, I don't
              remember whether they're a DC short or not, which could be
              a problem, since there's 3.3VDC on the<br>
                GPS input (to power an active antenna).
              <div>
                <div class="h5"><br>
                  <br>
                  <br>
                  <blockquote type="cite">
                    <div class="gmail_extra"><br>
                      <div class="gmail_quote">On Sat, Dec 6, 2014 at
                        2:53 PM, Dan Sego <span dir="ltr"><<a
                            moz-do-not-send="true"
                            href="mailto:bubbadoradar@gmail.com"
                            target="_blank">bubbadoradar@gmail.com</a>></span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:
                          0pt 0pt 0pt 0.8ex; padding-left: 1ex;
                          border-left: 1px solid rgb(204, 204, 204);">
                          <div dir="ltr">Good suggestion. I do have a
                            second N200 to try. see ya</div>
                          <div>
                            <div>
                              <div class="gmail_extra"><br>
                                <div class="gmail_quote">On Sat, Dec 6,
                                  2014 at 2:48 PM, Marcus D. Leech <span
                                    dir="ltr"><<a
                                      moz-do-not-send="true"
                                      href="mailto:mleech@ripnet.com"
                                      target="_blank">mleech@ripnet.com</a>></span>
                                  wrote:<br>
                                  <blockquote class="gmail_quote"
                                    style="margin: 0px 0px 0px 0.8ex;
                                    padding-left: 1ex; border-left: 1px
                                    solid rgb(204, 204, 204);">
                                    <div text="#000000"
                                      bgcolor="#ffffff"><span> On
                                        12/06/2014 05:39 PM, Dan Sego
                                        wrote:
                                        <blockquote type="cite">
                                          <div dir="ltr">
                                            <div>Again thanks. How is
                                              the test_pps_input
                                              successful without a PPS
                                              source? does it default to
                                              whatever clock is
                                              detected?</div>
                                          </div>
                                        </blockquote>
                                      </span> It's entirely possible
                                      that the PPS output on the GPSDO
                                      is working just fine, but the NMEA
                                      output (which is how the FPGA
                                      confirms the<br>
                                        presence of the GPSDO) failing
                                      can cause it to conclude that its
                                      not there.<span><br>
                                        <br>
                                        <br>
                                        <blockquote type="cite">
                                          <div dir="ltr">
                                            <div><br>
                                            </div>
                                            <div>Since the installation
                                              was done with anti-static
                                              safeguards, and since
                                              installation is so
                                              straight forward (all
                                              connectors keyed for
                                              example) I have to presume
                                              that I received a bad
                                              unit.</div>
                                          </div>
                                        </blockquote>
                                      </span> Do you have other N2xx to
                                      test it on, or conversely, another
                                      GPSDO to test?  Otherwise, there's
                                      an ambiguity about which piece is
                                      in trouble.
                                      <div>
                                        <div><br>
                                          <br>
                                          <br>
                                          <blockquote type="cite">
                                            <div dir="ltr">
                                              <div><br>
                                              </div>
                                              <div>Dan</div>
                                            </div>
                                            <div class="gmail_extra"><br>
                                              <div class="gmail_quote">On
                                                Sat, Dec 6, 2014 at 2:23
                                                PM, Marcus D. Leech <span
                                                  dir="ltr"><<a
                                                    moz-do-not-send="true"
href="mailto:mleech@ripnet.com" target="_blank">mleech@ripnet.com</a>></span>
                                                wrote:<br>
                                                <blockquote
                                                  class="gmail_quote"
                                                  style="margin: 0pt 0pt
                                                  0pt 0.8ex;
                                                  padding-left: 1ex;
                                                  border-left: 1px solid
                                                  rgb(204, 204, 204);">
                                                  <div text="#000000"
                                                    bgcolor="#ffffff"><span>
                                                      On 12/06/2014
                                                      05:22 PM, Dan Sego
                                                      wrote:
                                                      <blockquote
                                                        type="cite">
                                                        <div dir="ltr">
                                                          <div>GPSDO
                                                          shows
                                                          "internal"
                                                          under
                                                          'uhd_usrp_probe'.
                                                          Also I ran,
                                                          from examples,
                                                          'test_pps_input'
                                                          which returned
                                                          a success
                                                          message (is
                                                          this possible
                                                          w/o GPSDO
                                                          present and no
                                                          other external
                                                          time source?).
                                                          Subsequent
                                                          runs (using
                                                          the admin
                                                          command
                                                          prompt) did
                                                          not (appear)
                                                          to step
                                                          through the
                                                          'Detecting GPSDO..."
                                                          step so no
                                                          "not found'
                                                          message
                                                          appeared.  </div>
                                                          <div><br>
                                                          </div>
                                                          <div>The UHD
                                                          version is
                                                          003.008.000-release.
                                                          I purchased
                                                          the GPSDO from
                                                          NI and only
                                                          installed it
                                                          in N200 this
                                                          week (but have
                                                          had it for
                                                          some time in
                                                          original
                                                          shipping
                                                          wrapping).</div>
                                                          <div><br>
                                                          </div>
                                                          <div>I have
                                                          sensors.hpp as
                                                          an #include. I
                                                          don't
                                                          understand the
                                                          Error:
                                                          LookupError.</div>
                                                          <div><br>
                                                          </div>
                                                          <div>vr Dan</div>
                                                          <div><br>
                                                          </div>
                                                        </div>
                                                      </blockquote>
                                                    </span> That error
                                                    means that when it
                                                    tried to lookup that
                                                    sensor in the
                                                    virtual attribute
                                                    tree, it couldn't
                                                    find it--because at
                                                    init, it couldn't
                                                    find the GPSDO.
                                                    <div>
                                                      <div><br>
                                                        <br>
                                                        <br>
                                                        <blockquote
                                                          type="cite">
                                                          <div dir="ltr">
                                                          <div><br>
                                                          </div>
                                                          </div>
                                                          <div
                                                          class="gmail_extra"><br>
                                                          <div
                                                          class="gmail_quote">On

                                                          Sat, Dec 6,
                                                          2014 at 2:02
                                                          PM, Marcus D.
                                                          Leech <span
                                                          dir="ltr"><<a
moz-do-not-send="true" href="mailto:mleech@ripnet.com" target="_blank">mleech@ripnet.com</a>></span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
                                                          style="margin:
                                                          0pt 0pt 0pt
                                                          0.8ex;
                                                          padding-left:
                                                          1ex;
                                                          border-left:
                                                          1px solid
                                                          rgb(204, 204,
                                                          204);">
                                                          <div
                                                          text="#000000"
bgcolor="#ffffff"><span> On 12/06/2014 04:37 PM, Dan Sego wrote:
                                                          <blockquote
                                                          type="cite">
                                                          <div dir="ltr">
                                                          <div>Hello
                                                          Marcus</div>
                                                          <div><br>
                                                          </div>
                                                          <div>Allowed
                                                          the unit to
                                                          run for > 1
                                                          hour. Still
                                                          received --
                                                          Detecting
                                                          internal
                                                          GPSDO....No
                                                          GPSDO
                                                          found. The code
                                                          attempts
                                                          to execute</div>
                                                          <div><br>
                                                          </div>
                                                          <p><font
                                                          face="Consolas"><font
face="Consolas"> usrp->set_clock_source(</font></font><font
                                                          color="#a31515"
face="Consolas"><font color="#a31515" face="Consolas"><font
                                                          color="#a31515"
face="Consolas">"external"</font></font></font><font face="Consolas"><font
face="Consolas">, 0);</font></font></p>
                                                          <p><font
                                                          face="Consolas"><font
face="Consolas">usrp->set_time_source(</font></font><font
                                                          color="#a31515"
face="Consolas"><font color="#a31515" face="Consolas"><font
                                                          color="#a31515"
face="Consolas">"external"</font></font></font><font face="Consolas"><font
face="Consolas">, 0);</font></font></p>
                                                          <div><font
                                                          face="Consolas"><font
face="Consolas"> </font></font></div>
                                                          <p><font
                                                          face="Consolas"><font
face="Consolas"> std::cout << std::endl << </font></font><font
color="#a31515" face="Consolas"><font color="#a31515" face="Consolas"><font
color="#a31515" face="Consolas">"Clock Source Set"</font></font></font><font
face="Consolas"><font face="Consolas"> << std::endl <<
                                                          std::endl;</font></font></p>
                                                          <div><font
                                                          face="Consolas"><font
face="Consolas"> </font></font></div>
                                                          <p><font
                                                          face="Consolas"><font
face="Consolas"> usrp->get_mboard_sensor(</font></font><font
                                                          color="#a31515"
face="Consolas"><font color="#a31515" face="Consolas"><font
                                                          color="#a31515"
face="Consolas">"gps_time"</font></font></font><font face="Consolas"><font
face="Consolas">);</font></font></p>
                                                          <div> </div>
                                                          <div>The
                                                          last instruction
                                                          (from <a
                                                          moz-do-not-send="true"
href="http://files.ettus.com/manual/page_gpsdo.html" target="_blank">http://files.ettus.com/manual/page_gpsdo.html</a>) returns</div>
                                                          <div> </div>
                                                          <div>Error:
                                                          LookupError:
                                                          Path not found
                                                          in tree:
                                                          /mboards/0/sensors/gps_time
                                                          <br>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </span> That
                                                          error is
                                                          because it
                                                          never detected
                                                          a GPSDO in the
                                                          first place,
                                                          so those
                                                          sensors don't
                                                          exist if it
                                                          doesn't think
                                                          there's a
                                                          GPSDO there.<br>
                                                            So, either
                                                          you have a
                                                          defective
                                                          GPSDO, or it's
                                                          connected
                                                          incorrectly. 
                                                          You purchased
                                                          this GPSDO
                                                          through Ettus,
                                                          and it's the
                                                          internal-to-N210<br>
                                                            GPSDO?<span><br>
                                                          <br>
                                                          <br>
                                                          <blockquote
                                                          type="cite">
                                                          <div dir="ltr">
                                                          <div><br>
                                                          </div>
                                                          <div>Also,
                                                          having
                                                          implemented
                                                          the
                                                          SendFastDatagramThreshold
                                                          registry
                                                          change, I
                                                          still receive
                                                          (though less
                                                          regularly) </div>
                                                          <div>Error:
                                                          RuntimeError:
                                                          fifo cntl
                                                          timed out
                                                          looking for
                                                          acks</div>
                                                          <div><br>
                                                          </div>
                                                          <div>Any
                                                          suggestions?</div>
                                                          </div>
                                                          </blockquote>
                                                          </span> That's
                                                          a distinct
                                                          problem.  Not
                                                          sure where to
                                                          go from here,
                                                          your UHD
                                                          software is
                                                          up-to-date. 
                                                          How about your
                                                          Windows
                                                          updates?  My
                                                          suspicion<br>
                                                            is that this
                                                          is a network
                                                          driver issue,
                                                          not
                                                          specifically
                                                          related to
                                                          USRP, per se,
                                                          but rather
                                                          anything that
                                                          drives the
                                                          network stack
                                                          through that
                                                          interface<br>
                                                            "hard" will
                                                          experience
                                                          problems.
                                                          <div>
                                                          <div><br>
                                                          <br>
                                                          <br>
                                                          <blockquote
                                                          type="cite">
                                                          <div dir="ltr">
                                                          <div><br>
                                                          </div>
                                                          <div>regards,
                                                          Dan</div>
                                                          </div>
                                                          <div
                                                          class="gmail_extra"><br>
                                                          <div
                                                          class="gmail_quote">On

                                                          Thu, Dec 4,
                                                          2014 at 6:33
                                                          AM, Marcus D.
                                                          Leech via
                                                          USRP-users <span
                                                          dir="ltr"><<a
moz-do-not-send="true" href="mailto:usrp-users@lists.ettus.com"
                                                          target="_blank">usrp-users@lists.ettus.com</a>></span>
                                                          wrote:<br>
                                                          <blockquote
                                                          class="gmail_quote"
                                                          style="margin:
                                                          0pt 0pt 0pt
                                                          0.8ex;
                                                          padding-left:
                                                          1ex;
                                                          border-left:
                                                          1px solid
                                                          rgb(204, 204,
                                                          204);">
                                                          <div
                                                          text="#000000"
bgcolor="#ffffff">
                                                          <div>
                                                          <div> On
                                                          12/03/2014
                                                          10:01 PM, Dan
                                                          Sego via
                                                          USRP-users
                                                          wrote:
                                                          <blockquote
                                                          type="cite">
                                                          <div dir="ltr"><br>
                                                          <div
                                                          class="gmail_quote">----------



                                                          Forwarded
                                                          message
                                                          ----------<br>
                                                          From: <b
                                                          class="gmail_sendername">Dan



                                                          Sego</b> <span
                                                          dir="ltr"><<a
moz-do-not-send="true" href="mailto:bubbadoradar@gmail.com"
                                                          target="_blank">bubbadoradar@gmail.com</a>></span><br>
                                                          Date: Wed, Dec
                                                          3, 2014 at
                                                          6:37 PM<br>
                                                          Subject: GPSDO
                                                          not found<br>
                                                          To: <a
                                                          moz-do-not-send="true"
href="mailto:usrp-users@lists.ettus.com" target="_blank">usrp-users@lists.ettus.com</a><br>
                                                          <br>
                                                          <br>
                                                          <div dir="ltr">
                                                          <div>Please
                                                          disregard last
                                                          note. When in
                                                          doubt read
                                                          (all) the
                                                          documentation.
                                                          Ran the eeprom
                                                          burner
                                                          (usrp_burn_mb_eeprom)
                                                          and received a
                                                          successful
                                                          result.</div>
                                                          <div><br>
                                                          </div>
                                                          <div>After
                                                          cycling
                                                          power I
                                                          ran uhd_usrp_probe again.
                                                          Detecting
                                                          internal GPSDO
                                                          again returned
                                                          - No GPSDO
                                                          found.
                                                          However under
                                                          Mboard N200r4
                                                          the gpdso
                                                          field indicates
                                                          "internal"</div>
                                                          <div><br>
                                                          </div>
                                                          <div>So some
                                                          consternation
                                                          remains.
                                                          Suggestions,
                                                          please? </div>
                                                          <div><br>
                                                          </div>
                                                          <div>cheers,</div>
                                                          <div>Dan Sego</div>
                                                          <div><br>
                                                          </div>
                                                          <div> <br>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          </div>
                                                          My
                                                          recollection
                                                          is that the
                                                          GPSDO doesn't
                                                          start putting
                                                          out NMEA
                                                          sentences
                                                          until it has
                                                          warmed-up from
                                                          cold start,
                                                          and it is the
                                                          NMEA sentences
                                                          that<br>
                                                            the USRP is
                                                          looking for to
                                                          confirm the
                                                          presence of
                                                          the GPSDO. 
                                                          So, power it
                                                          up, leave it
                                                          for 30
                                                          minutes, then
                                                          try to bring
                                                          up a session
                                                          with it.<span><font
color="#888888"><br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          <br>
                                                          <pre cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a moz-do-not-send="true" href="http://www.sbrac.org" target="_blank">http://www.sbrac.org</a>
</pre>
                                                          </font></span></div>
                                                          <br>
_______________________________________________<br>
                                                          USRP-users
                                                          mailing list<br>
                                                          <a
                                                          moz-do-not-send="true"
href="mailto:USRP-users@lists.ettus.com" target="_blank">USRP-users@lists.ettus.com</a><br>
                                                          <a
                                                          moz-do-not-send="true"
href="http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com"
target="_blank">http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com</a><br>
                                                          <br>
                                                          </blockquote>
                                                          </div>
                                                          <br>
                                                          </div>
                                                          </blockquote>
                                                          <br>
                                                          <br>
                                                          <pre cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a moz-do-not-send="true" href="http://www.sbrac.org" target="_blank">http://www.sbrac.org</a>
</pre>
                                                          </div>
                                                          </div>
                                                          </div>
                                                          </blockquote>
                                                          </div>
                                                          <br>
                                                          </div>
                                                        </blockquote>
                                                        <br>
                                                        <br>
                                                        <pre cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a moz-do-not-send="true" href="http://www.sbrac.org" target="_blank">http://www.sbrac.org</a>
</pre>
                                                      </div>
                                                    </div>
                                                  </div>
                                                </blockquote>
                                              </div>
                                              <br>
                                            </div>
                                          </blockquote>
                                          <br>
                                          <br>
                                          <pre cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a moz-do-not-send="true" href="http://www.sbrac.org" target="_blank">http://www.sbrac.org</a>
</pre>
                                        </div>
                                      </div>
                                    </div>
                                  </blockquote>
                                </div>
                                <br>
                              </div>
                            </div>
                          </div>
                        </blockquote>
                      </div>
                      <br>
                    </div>
                  </blockquote>
                  <br>
                  <br>
                  <pre cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a moz-do-not-send="true" href="http://www.sbrac.org" target="_blank">http://www.sbrac.org</a>
</pre>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
    </blockquote>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
<a class="moz-txt-link-freetext" href="http://www.sbrac.org">http://www.sbrac.org</a>
</pre>
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