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List: usrp-users
Subject: [USRP-users] USRP N210 with GPSDO - Timestamps and Unlocked
From: "Patel, Priyank via USRP-users" <usrp-users () lists ! ettus ! com>
Date: 2015-10-29 15:13:57
Message-ID: 56f214675d2f4f4cbd7f3334ac401390 () apatlisdmail01 ! core ! gtri ! org
[Download RAW message or body]
Hello,
I have a USRP N210 with a GPSDO module and currently am not getting a GPS l=
ock. I have left it on for over 30 minutes and know I can get a GPS lock f=
rom my location using other GPS systems. I am using the 3V Active GPS Ante=
nna for the GPSDO kit and seems to be compatible with the USRP N210. Is th=
ere anything else I can do currently to debug this issue, currently I just =
poll the following command: get_mboard_sensor("gps_locked") and am getting =
GPS lock status: unlocked.
Once I do get past this problem, I would like to get the GPS timestamp asso=
ciated with the first received sample when running something like uhd_rx_cf=
ile. From what I understand, this is already sent out but currently it just=
displays time from when I first turned on the USRP (using the -m option fo=
r uhd_rx_cfile to write out the metafile header). Will this update to the =
correct GPS time once it is locked or will I have to poll it a different wa=
y?
Thanks,
Priyank Patel
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a USRP N210 with a GPSDO module and currently am not \
getting a GPS lock. I have left it on for over 30 minutes and know I can get a \
GPS lock from my location using other GPS systems. I am using the 3V Active GPS \
Antenna for the GPSDO kit and seems to be compatible with the USRP N210. Is \
there anything else I can do currently to debug this issue, currently I just poll the \
following command: get_mboard_sensor(“gps_locked”) and am getting GPS \
lock status: unlocked.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Once I do get past this problem, I would like to get the GPS \
timestamp associated with the first received sample when running something like \
uhd_rx_cfile. From what I understand, this is already sent out but currently it just \
displays time from when I first turned on the USRP (using the –m option for \
uhd_rx_cfile to write out the metafile header). Will this update to the correct \
GPS time once it is locked or will I have to poll it a different way? <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Priyank Patel<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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