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3
Specifying the Connection Setup
5
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If, however, you do not retain the maximum link width set by default and set the Auto
option, then the automatic link width detection is only within the limits of the set link
width. For instance, if you set the link width to x4 and set the Auto option, then the link
width detection and changes will be for x1, x2, and x4 only.
•
If you do not select the Auto option, the link width of the U4301 module is fixed to the
value you set in the Link Width field. As a result, the data is captured only if the link width
in the captured data matches the set link width. For instance, If link width is set to x16,
and data is to be captured for x8, then capture will not happen.
NOTE:
•
The Auto checkbox is selected by default. Using this checkbox, you can choose to
enable/disable the auto link width detection feature individually for each U4301 module.
•
The Auto setting is not impacted by whether or not the link is going in/out of L0s or L1 or
when there is a change in the link speed.
Verify the connection:
a Click Connection diagram....
b Use the Connection Diagram dialog to verify that your connection setup specification matches
the actual device under test connection.
Keysight U4301 PCIe Gen3 Analyzer User's Guide
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