User`s guide

Fibre Channel Compliance Tool
With fewer controls to configure, this tool provides single-button compliance measurements of
specifications summarizing relevant measurement plots.
Applications of Fibre Channel Compliance Tool
• FC HBA,
• JBOD,
• GBIC,
• Gigabit Ethernet,
• SONET and
• InfiniBand
Testing SAN systems for jitter compliance can be difficult because traditional techniques and instruments,
such as oscilloscopes, do not provide jitter values at a specified bit error rate (BER) or separate out the
various jitter components. Furthermore, oscilloscopes require a bit clock or trigger and, typically, these
signals are not available on these systems. With
WAVECREST's SIA-3000, PM50 and dataCOM
software, users can perform jitter compliance measurements on only the data without a bit clock or
trigger. The PM50 produces a pattern marker from a repeating pattern that is then used as an arming
signal for the
SIA-3000. In essence, the pattern marker provides a reference point for time interval
measurements. The PM50 matches up to a unique, 40-bit portion of the data. For example, the unique
40-bit portion of a pattern, such as CRPAT, would be the start-of-frame (SOF). An arm signal will be
generated after the SOF and a time interval measurement will be made from the next data edge, after
the arm signal, to an edge n unit intervals away. Algorithms de-convolve the data to provide quantitative
information on random, deterministic and periodic jitter and this is described in detail at the end of this
application note. The PM50 can also be used in the Edge Count mode where the user inputs the number
of positive edges of the pattern and a pattern marker is output every time the pattern repeats. With the
A45/A25 oscilloscope option, the
SIA-3000 can also make voltage measurements such as eye masks
and rise/fall times.
© WAVECREST Corporation 2005 Section 4 - GigaView
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