Teledyne LeCroy Serial Data Debug Solutions - Manual (Page 84)

Serial Data Debug Solutions
84 919586 RevA
E YE D IAGRAM AND M ASK T EST S ETUP D ETAIL
The Left Hand side of the FlexRay Physical Layer tab has all the settings for Eye Diagram Mask testing as follows.
Input Signal Setup

Eye On/Off - Mark this checkbox to turn on the eye diagram. When marked, the Eye Mask Violation Test
and Mask Type fields are enabled.

SI Voting On - Mark this checkbox to apply this signal integrity compliance procedure for further analysis
in the event of eye diagram test result failures.

Source - The pop-up dialog is used to select the channel, math or memory waveform to use for the eye
diagram creation.

Bitrate - The eye diagram can be created from FlexRay waveforms with bitrates of 2.5 Mb/s, 5 Mb/s and
10 Mb/s as defined in the FlexRay specification. The value can be entered by using the arrow keys or
touching the field and entering a value.
Note: The time required to build long memory waveform eye diagrams is longer than required for short
memory waveforms.
Mask Test On Eye Setup

Eye Mask Violation Test - When the Eye On checkbox is marked, this field is enabled and you can then
mark this checkbox to turn on the Eye Mask Violation Test. Similarly, when Eye Mask Violation Test is
marked, the Stop on violation field is enabled and may also be used.

Mask Type - Select the desired mask (as defined in the FlexRaybus specification) to use for your testing
purposes.

Stop on violation - This function may only be added to your physical layer measurement (by marking the
checkbox) when the Eye On and Eye Mask Violation Test checkboxes are both also marked.