Agilent Technologies 54657A Guía de usuario Pagina 67

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1 Set up the oscilloscope for proper viewing of the eye-pattern signal.
2 Determine the fail region.
3 Create the mask using the line drawing capabilities of the mask
editor.
The voltage and time readouts in the mask editor can be used to ensure the
correct shape and position of the mask. An example of how the mask
template looks during testing is shown below.
4
Select the fail region as Inside of the mask template.
Example of a mask template used for eye-opening testing
Figure 2 19
Operating the Measurement/Storage Module
Testing the eye opening of an eye-pattern signal
2–51
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