Anritsu BERTWave Series, Operation Manual, Page: 293 / 466

6.9 Measuring Waveform
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How to Operate Sampling Scope
To set Mask Margin and execute mask test
1. Click Setup.
2. Click the Sampling Mode button to set the display Eye or Coherent
Eye.
3. Click Sampling to set the display Run.
4. When the trace is displayed, click Auto Scale.
Check that the eye pattern is displayed in the center of the screen.
5. Click Measure.
6. Click Mask Test tab.
7. Click the Channel button to set the channel.
8. Click the Eye Mask Select button to select the mask.
9. Click the Align Method button to set to Zero/One/Crossing.
10. Click the Mask Test button and set the display to On.
11. Click the Test Method button to set to One Shot.
12. Click Sampling to set the display to Hold.
13. Click Update.
14 Click the mask margin text box.
15. Input the mask margin in the range of –100 to 100%.
16. The shape of the mask is changed, and the measurement result is
displayed on the screen.
Note:
When executing the Mask Test, run Auto Scale to set UI On Screen
to 2.
The Mask Test measured value is assured when UI On Screen is 2.
If UI On Screen is 3 or more, the optimum Mask position may not
be detected because the vertical scale setting is not optimum.