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34 Agilent E6474A User’s Guide
3 Set Up Your System
1 Select the USB port to test.
2 Select the Test Ports button.
3 Select the ports to test.
4 Enable Use Digital Loopback option.
5 Select Begin Test.
Once the test is completed and successful (refer to Figure 8 on
page 34), the selected ports are flagged as Passed. If the ports
Fail, check the power connections and driver installation using
the Device Manager.
Figure 8 Confidence Test dialog box