Agilent Technologies 54657A Uživatelská příručka stáhnout pdf (Strana 67)

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.

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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Agilent Technologies 54657A Uživatelská příručka Strana 67