User`s guide

Spread Spectrum Clock Tool
Overview
The Spread Spectrum Clock (SSC) tool automatically measures SSC effects on signals. The tool will
measure the frequency of the SSC as well as its plus and minus parts per million (ppm) delta from a
nominal frequency.
Making a Spread Spectrum Clock Measurement
Setup Directions
• Connect signal to Channel 1.
Most tools default to Channel 1, however, the input channel can be changed. For single-ended
measurements, use just the top input SMA leaving the bottom unconnected. For differential
measurements, connect to Input and Input-.
• Open the Spread Spectrum Clock tool by selecting the Clock, Other Clock Tools and Spread Spectrum
Clock buttons.
• Press Single/Acquire
on the toolbar or the Single/Acquire button on the front panel. Some results
require repeated runs to acquire; you can press Run
to get those values.
See Interpreting Spread Spectrum Clock Views for descriptions of the different ways of displaying the
measurements made by the Spread Spectrum Clock Tool.
© WAVECREST Corporation 2005 Section 4 - GigaView
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