[time-nuts] PN on internal/external references and Cross correlation

Vasco Soares vesoares at deea.isel.ipl.pt
Thu Sep 28 16:54:33 EDT 2017

Hi All,


In a PN measurement system with a dual channel cross correlation is there a simple rule of thumb for how low should be the PN of the (external) references compared to the DUT? (even with a 20 dB noise floor improvement with 10000 cross correlations). In the case of the references have an equal noise contribution compared to the DUT will the results suffer from loss of accuracy?





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