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Re: [Discuss-gnuradio] Common clock for two RFX2400 DB's

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Common clock for two RFX2400 DB's
Date: Mon, 03 Mar 2008 22:37:16 -0800
User-agent: Thunderbird (X11/20080226)

Andrey A wrote:
Andrey A wrote:
We consider using USRP with two RFX2400 dautherboards to build MIMO system.
As I can see, each RFX2400 has Tx and Rx VCOs. Is it possible to use
common clock for these two dautherboards? (Frequency mismatch between
VCOs may prevent MIMO).

All the VCOs are locked to the same reference, so you can do MIMO.

Thank you, Matt.
One more question. What is the reference instability?

Are you looking for the frequency accuracy? phase noise? I'm not sure what you mean.


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