Re: [Discuss-gnuradio] frequency drift of WBX

[Mike Jameson]

Hi,

The WBX frequency stability is determined by the accuracy of the USRP clock signal.  For example, the USRP2 has a 100MHz internal clock which can be locked to a 10MHz external source such as GPSDO for better frequency stability.

See the following url for more info:

http://gnuradio.org/redmine/projects/gnuradio/wiki/USRPClockingNotes

GSM base stations have very accurate GPS disciplined clocks in them and 'Kalibrate' allows you to measure your device's frequency stability by using a mobile base station as a reference. Link below:

http://ttsou.github.com/kalibrate-uhd/

Cheers,

Mike
M0MIK

On 29 January 2013 02:45, Gong Zhang <address@hidden> wrote:

Hi,
   I wanna know the frequency drift of WBX daughterboard.I think it may depend on the stability of WBX oscillator.How can I calculate it?
Thank you.

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