Measurement Algorithms
Equipment Setup for Tests
Low Speed Downstream Signal Quality Host Equipment Setup
To set up the equipment for Low Speed Downstream Signal Quality test, follow
these steps:
1.
Connect a cable between the A receptacle from the Inrush test section of the
test fixture and the USB device.
2.
Connect Ch1 of the D+
probe to the D+ pins on the Inrush section of the test
fixture.
3.
Connect Ch2 of the D–
probe to the D– pins on the Inrush section of the test
fixture.
4.
Use the connectors to connect the A pin dongle from the Inrush section of
the test fixture to any
port of the unit under test (host or PC).
5.
Select the measurement and select the
command button to run the
application.
6.
Select OK after acquiring a waveform. Verify that it is a correct waveform.
If the signal is clipped, follow these steps to increase the vertical scale:
1.
In the oscilloscope menu, select Vertical>Vertical Setup to display the
Channel screen.
2.
In the Scale field, increase the vertical scale values until the waveform is
completely displayed on screen.
202
TDSUSB2 Universal Serial Bus Measurement Package
Summary of Contents for TDS5032
Page 1: ...TDSUSB2 Universal Serial Bus Measurement Package 077 0015 04 www tektronix com...
Page 12: ......
Page 24: ...Getting Started 10 TDSUSB2 Universal Serial Bus Measurement Package...
Page 32: ...Installation 18 TDSUSB2 Universal Serial Bus Measurement Package...
Page 61: ...Operating Basics TDSUSB2 Universal Serial Bus Measurement Package 47...
Page 76: ...Taking Measurements 62 TDSUSB2 Universal Serial Bus Measurement Package...
Page 88: ...Tutorial 74 TDSUSB2 Universal Serial Bus Measurement Package...
Page 158: ...Application Examples 144 TDSUSB2 Universal Serial Bus Measurement Package...
Page 228: ...Measurement Algorithms 214 TDSUSB2 Universal Serial Bus Measurement Package...
Page 248: ...Glossary 234 TDSUSB2 Universal Serial Bus Measurement Package...
