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XAUI SJ jitter test



Tom, I'm asking you this as I seem to recall from the Jan Interim you presented on the Annex 48A jitter test approach. If I am in error please forgive me. 
 
In D2.1, Clause 47, Page 285, Figure 47-8 shows Sinusoidal Jitter Tolerance Mask that requires 0.1UI SJ tolerance up to 20Mhz.  Can you or anyone on the reflector describe how this limit can be tested.  I am told that the HP 3G and 12G BERTs can only modulate up to 10Mhz.
 
Regards,
Shawn Rogers