8 making a pci express recording – Teledyne LeCroy PETracer EML Analyzer and Exerciser User Manual User Manual

Page 69

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PETracer EML User Manual

Chapter 4: Software Overview

LeCroy Corporation

61

4.8 Making a PCI Express Recording

After connecting the Analyzer to the device(s), you must configure the
Recording Options. Then you can test the Analyzer by creating a 16-MB snapshot
recording.
To make this recording, follow these steps:

Step 1 From the Setup menu, select Recording Options.

Step 2 Select the General tab.

The following window displays the factory default settings in Simple Mode, such
as Snapshot and 16-MB buffer size.For your first recording, you can leave these
settings unchanged.

Step 3 In the Link section, specify the lane width of the PCI Express link to be

analyzed. The rest of the settings in this section can be left at the factory
defaults for most PCI Express systems.

Step 4 For multi-lane PCI Express links, the Analyzer needs to observe

link training in order to record link traffic correctly. If link training (or
re-training) is not easily controllable for the devices under test, the
Analyzer includes the capability to force link training by disconnecting
and reconnecting the PCI Express link.

Clicking the Connect/Disconnect

button disconnects the PCI Express

link for one second in both directions, then re-establishes the link.

Note: For x1 PCI Express links, it is not necessary for the Analyzer to observe
link training in order to record link traffic; this step may be skipped.

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