Technical data

190 Notes on USB Electrical Compliance Testing
7 Low and Full Speed Tests
3 Under the Select Tests tab, check the box next to Droop/Drop Test.
4 Click on the Configure tab and scroll to the bottom of the left pane.
There will be several listings under the Droop/Drop Test entry that
allow you to configure your tests. Set these to the appropriate values
for your specific testing conditions.
5 The new E2649- 66405 Droop/Drop test fixture supports both manual
and automatic testing. Manual testing requires you to adjust the settings
on the test fixture manually while automatic testing allows the
application to walk you through the testing procedure. The following
instructions will be for manual testing as the application will instruct
you on how to use automatic testing.