Reference Resume Test Equipment Setup
4. Connect the unit under test to the A Receptacle of the Inrush section of the test fixture and observe the
Inrush current signal.
5. Select OK after acquiring a waveform. Verify that it is a correct waveform.
NOTE. To avoid the triggering of Inrush signals and false inrush current by the discharge switch, place the
inrush discharge switch in the ON position and hot-plug the unit under test (device). If a valid Inrush
signal is not acquired, use the cursor mode in File > Preferences or setup the oscilloscope to get a valid
waveform.
Resume Test Equipment Setup
To set up the Device SQ in the test fixture for the Resume test, follow these steps:
1. Set the S5 switch to the Init position.
2. Use a standard length of the USB cable with an A plug on one end and a B plug on the other end.
Connect one end o f the cable to the B socket on the Init port of the Device SQ section and the other
end to the host port A socket.
TDSUSB2 Universal Serial Bus Measurements Package 199
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