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DSOX4USBSQ USB 2.0 Signal Quality Analysis Application Electrical Testing Notes
3
Host Signal Quality Testing
Host Hi-Speed Connection - SMA Cables
1
Attach the 5V power supply to J5 of the E2649- 66402 Hi- Speed signal
quality test fixture. Verify the green POWER LED is lit.
2
Set the TEST switch (S1) of the test fixture to the ON position and
verify that the yellow TEST LED is lit.
3
Attach the SMA cables to SMA connectors D+ and D- on the test
fixture.
4
Connect the [TEST PORT] of the E2649- 66402 Host Hi- Speed Signal
Quality test fixture into the port under test of the host controller, using
the 4" USB cable.
The host controller here refers to the Hi- speed Electrical Test Bed
Computer that has the HS Electrical Test Tool on it.
Host Hi-Speed Compliance Test Packets
To set up the Host computer to transmit compliance test packets, perform
these steps:
1
Invoke the HS Electrical Test Tool software on the Hi- Speed Electrical
Test Bed computer.
2
Select
Host Controller/System
and click the
TEST
button to open the Host
Test dialog box.
1
2
3
4
Init. Port
Test
Port
5V
D+
D-
TP2
4“
Host Under Test
SMA cables
Host Hi-Speed
Signal Quality
Test Fixture
