<div dir="auto">Hello,<div dir="auto"><br></div><div dir="auto">I know that the 10GbE ethernet interface is adding an extra 500us round trip time delay with fiber DAC. I tested it myself. 1 GbE would probably give a similar delay as well. So do you think it would stay below our delay budget of 250us?</div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto">Akın</div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, 1 Mar 2019 00:24 Nate Temple <<a href="mailto:nate.temple@ettus.com">nate.temple@ettus.com</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi Rob,<br><br>Yes, that's correct, you can use the WR-LEN with the X310.<br><br>Regards,<br>Nate Temple<br><br><br><br><br><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 27, 2019 at 12:40 PM Rob Kossler <<a href="mailto:rkossler@nd.edu" target="_blank" rel="noreferrer">rkossler@nd.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Nate,<div>Although the X3xx series to not natively support White Rabbit, I believe that they can get all of the benefits by using a WR-LEN in close proximity to the X310.  Is that correct?</div><div><br></div><div>Rob</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 27, 2019 at 11:45 AM Nate Temple via USRP-users <<a href="mailto:usrp-users@lists.ettus.com" target="_blank" rel="noreferrer">usrp-users@lists.ettus.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Hi Akin,<br><br>The Octoclock-G would be suitable for this purpose, and yes, it does contain a GPSDO (OCXO). <a href="https://kb.ettus.com/GPSDO#GPSDO_.28OCXO.29" target="_blank" rel="noreferrer">https://kb.ettus.com/GPSDO#GPSDO_.28OCXO.29</a><br><br>The Octoclock-G does not contain an antenna, you must provide one to the GPS Antenna input (SMA).<br><br>The X3xx series do not support IEEE 1588, however, the N3xx series USRPs do support White Rabbit, which is an extension of the IEEE-1588-2008 standard. More info can be found here on it <a href="https://kb.ettus.com/Using_Ethernet-Based_Synchronization_on_the_USRP%E2%84%A2_N3xx_Devices" target="_blank" rel="noreferrer">https://kb.ettus.com/Using_Ethernet-Based_Synchronization_on_the_USRP%E2%84%A2_N3xx_Devices</a><br><br><br>Regards,<br>Nate Temple<br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 27, 2019 at 8:31 AM akin soysal via USRP-users <<a href="mailto:usrp-users@lists.ettus.com" target="_blank" rel="noreferrer">usrp-users@lists.ettus.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">Hello All,</p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><br></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">I have a question. We want to synchronize the clock of the two USRP X310s with a GPS or IEEE 1588 standard. I would like to synchronize the two USRPs with each other so that the base station and user terminal would not experience any synchronization issue. I also would like to synchronize one of the USRP X310s with an external base station, which supports IEEE 1588 and GPS clocks, and we have a synchronization budget of about<span> </span><b>250us</b>.</p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><br></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">I learned that the setup that worked in France is using the following Ettus product:</p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><br></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><a href="https://www.ettus.com/product/details/OctoClock-G" rel="noopener noreferrer noreferrer" id="m_-807304161238119579gmail-m_1727057800765895570gmail-m_-1818573276368136347gmail-m_6693148769170317193gmail-LPlnk559397" target="_blank">https://www.ettus.com/product/details/OctoClock-G</a></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><br></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">Do you think that this would suffice for our needs? It has its own GPS clock and antenna inside, right? It is compatible with USRP X310?</p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px"><br></p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">I know that the product specification does not include IEEE 1588, so I am concluding that it would not be possible to use this standard for our scenario, do you agree?<br><br>Thanks and regards,</p><p style="color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont;font-size:16px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;margin-top:0px;margin-bottom:0px">Akın</p></div>
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