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RE: XAUI SJ jitter test

The BERT is the problem or it is the Pattern Generator/Signal Generator?
-----Original Message-----
From: Rogers, Shawn [mailto:s-rogers@xxxxxx]
Sent: Tuesday, March 06, 2001 6:32 PM
To: 'Tom Lindsay'
Subject: 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.
Shawn Rogers