[USRP-users] GPSDO desynchronisation during Initialising

Marius metallheart_18 at yahoo.com
Thu Oct 15 13:37:26 EDT 2015

Thank you Marcus for the quick response,

I have 1xLFRX, 1xLFTX and 1xWBX. The USRP came from NI with 2xWBX and the GPSDO already installed.
I tried a couple of months ago to update to UHD v. 3.9 (beta) but I got some compiling errors and the PC could’t see the device (connected by PCIe) so I returned to UGD 3.8. 
After that I didn’t tried to upgrade anymore the driver.
Regarding the power supply, tomorrow I will get back to you with that ‘cause I have the device at work.


> On 15Oct 2015, at 19:54, mleech at ripnet.com wrote:
> What daughtercards are you using?
> Do you have the 3amp or 4amp power supply?
> Could you try updating to a new UHD?
> On 2015-10-15 12:41, Marius via USRP-users wrote:
>> Hi, 
>> I have a issue with my X310 USRP (bought from National Instruments the model NI 2950). The GPSDO (LCXO BOM: 3.1, FW: 0.929a-1PPS, PN: 100) loses the synchronisation almost every time when the flow graph is started, just after the console outputs "Found an internal GPSDO. Initializing time to the internal GPSDO".
>> It takes a variable time for the board_sensor to get locked again, somewhere between 10 seconds and 15 minutes. 
>> Did someone had the same issue or knows if it is a software/firmware/hardware problem of any idea how to fix it?
>> I use UHD 3.8.4.
>> Thank you.
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