User`s guide

Bathtub
Bathtub Curve is also referred to as an "error probability density plot". This plot is derived from a
convolution of DJ and RJ values from TailFit. The plot shows a view of the long-term reliability of the
signal under test. Total Jitter (TJ) is extracted directly from this plot and is a pk-pk value at a specific bit
error rate or number of clock cycles. The TJ value is read from the curve at the point that the color turns
to gray.
© WAVECREST Corporation 2005 Section 4 - GigaView
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