GTS Transceiver PHY User Guide

ID 817660
Date 4/01/2024
Public

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8.3.6. Running Eye Viewer Tests

The Transceiver Toolkit supports internal eye measurements. The Eye Viewer section in every RX Channel tab under the Channel Parameters pane allows you to set up and run eye measurement tests.
Note: The toolkit does not support 2D Eye plots and it reports the results in terms of Eye Height values.
  1. Select Measure Eye Height.
    Note: The Transceiver Toolkit does not support Eye Width measurement in the current Quartus® Prime Pro Edition software release, but it is planned to be supported in a future software release.
  2. Set Bit Error Rate to measure Eye Height as shown in the following figure. Valid bit error rate range is from 1.0E-1 to 1.0E-12. The default bit error rate for is 1.0E-12.
    Figure 93. Setting the BER for Eye Measurement Options
  3. Specify the file path to store the results in CSV format.
  4. Click Start Eye Viewer. Make sure the RX channel is receiving data before starting eye measurement.
When the measurement completes, the eye height results are shown in the following figures. The Eye Center-to-top and Eye Center-to-bottom values are with reference to the center of the eye. Measurement from eye center to the top of the eye is a positive value. Measurement from the eye center to the bottom of the eye is a negative value. The Eye Height is calculated by Eye Center-to-top minus Eye Center-to-bottom. A negative Eye Height value means the eye is closed.
Figure 94. Eye Height Results