User`s guide

1-Sigma View
The 1-sigma view shows the accumulation of jitter across a number of UI. When cross talk or Periodic
Jitter is present, this plot looks like the example with 'hills and valleys'. This record is used to generate
an FFT of the Periodic and Random Jitter spectrum. A constantly rising plot line typically indicates that
the random jitter is constantly increasing or that there is a very low frequency periodic jitter present.
FFT View
The FFT shows the jitter spectrum for Periodic and Random Jitter. The different filters are applied to this
FFT for required corner frequencies at baud/10, baud/500 and baud/1667. It is possible to view all or
just one using the setting "Filters to Show". The legend to the right shows the filtered result that is
displayed on the plot.
Section 4 - GigaView © WAVECREST Corporation 2005
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