Re: unexpected LookupError using gpsdo

Hi mleech, thanks for your help.

I have done the post-installation task by using the command :sudo
./usrp_burn_mb_eeprom --args=addr=192.168.10.2 --key=gpsdo
–val=internal
The terminal return:

Creating USRP device from address: addr=192.168.10.2
– Opening a USRP2/N-Series device…
– Current recv frame size: 1472 bytes
– Current send frame size: 1472 bytes

Fetching current settings from EEPROM…
EEPROM [“gpsdo”] is “internal”

Setting EEPROM [“gpsdo”] to “internal”…
Power-cycle the USRP device for the changes to take effect.

I think the congfiure is successful. Then I use the GPS function of my
phone, It works. I think the signal of GPS satellite is also available.

But the lookuperror still exists. Why was that? Dose gpsdo can’t be
used in China?

By FengZhu


发件人: “[email protected][email protected]
收件人: [email protected]
发送日期: 2012年3月21日, 星期三, 下午 10:16
主题: Re: [Discuss-gnuradio] unexpected LookupError using gpsdo

On Wed, 21 Mar 2012 21:23:39 +0800 (CST), Fengzhu FengzhuYe wrote:
Hi,

usrp->set_time_source(“external”);
It work well too.
Now I am confused . why is that happen? Was my gpsdo broken? All the two gpsdos
have the same LookupError.

Thanks for your help.

Did you do the post-installation task:

http://files.ettus.com/uhd_docs/manual/html/gpsdo.html#post-installation-task-n-series-only

Also, the “gps_time” is only available once the GPSDO is locked to a GPS
satellite constellation–that’s where it gets the time from (and the
phase reference!).

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