Disciplining daughterboard oscillator through external reference

Hi everybody,
by performing some tests over the USRP2 platform equipped with RFX400
frontend, it appeared to us that external reference only disciplines
motherboard clock without locking daughterboard oscillator.

Is this assumption correct?
If so, is there any possibility to have also the db local oscillator
disciplined by the external 10 MHz reference.

thanks

vincenzo

On 02/23/2010 04:18 AM, Vincenzo P. wrote:

Hi everybody,
by performing some tests over the USRP2 platform equipped with RFX400
frontend, it appeared to us that external reference only disciplines
motherboard clock without locking daughterboard oscillator.

Is this assumption correct?
If so, is there any possibility to have also the db local oscillator
disciplined by the external 10 MHz reference.

You have an older RFX400. You can easily modify it so that the
daughterboard shares the motherboard clock by following the instructions
here:

http://gnuradio.org/redmine/wiki/1/USRPClockingNotes

Matt

Thank you Matt.

vincenzo

2010/2/24 Matt E. [email protected]

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