<HTML><BODY>Hello, All!<br><br><br>1. I'm also (as Andrew Back) interested about calibration methods, but <span id="result_box" class="short_text" lang="en"><span class="hps">I can not find</span> <span class="hps">calibration technology</span></span> description.<br>How i can calibate device?<br><br>2. test_pps_input program failed with message:<br><br>Using Device: Single USRP:<br> Device: UmTRX Device<br> Mboard 0: UMTRX-REV0<br> RX Channel: 0<br> RX DSP: 0<br> RX Dboard: A<br> RX Subdev: LMS6002D (0xfa07) - 0<br> TX Channel: 0<br> TX DSP: 0<br> TX Dboard: A<br> TX Subdev: LMS6002D (0xfa09) - 0<br><br><br>Attempt to detect the PPS and set the time...<br><br>-- 1) catch time transition at pps edge<br>Error: RuntimeError: Board 0 may not be getting a PPS signal!<br>No PPS detected within the time interval.<br>See the application notes for your device.<br><br><br>Where i can get information about pps signal state and gps lock? (from device)<br><br>3. I<span id="result_box" class="short_text" lang="en"><span class="hps"> found that</span> <span class="hps">eob</span></span> (end of burst) metadata does not work, signal at <span id="result_box" class="short_text" lang="en"><span class="hps">spectrum analyzer</span></span> is present, after sendind eob.<br>How i can mute tx?<br><div id="gt-src-tools"> </div><div id="gt-res-content" class="almost_half_cell"><div style="zoom: 1;" dir="ltr" data-mce-style="zoom: 1;"><span id="result_box" class="short_text" lang="en"><span class="hps">thanks for answers</span></span>! :-)<br></div></div><br><br>С уважением,<br>alex korolev<br>nik135@mail.ru</BODY></HTML>