Agilent Technologies DSOX4USBSQ USB 2.0 Manual de Serviço descarregar pdf (Página 5)

DSOX4USBSQ USB 2.0 Signal Quality Analysis Application Electrical Testing Notes 5

Contents

USB 2.0 Signal Analysis—At a Glance 3

1 Preparing for Signal Quality Analysis

Oscilloscope Requirements 8

Fixtures for Signal Quality Tests 9

Fixtures for Hi-Speed Signal Quality Tests 9

Fixture for Full/Low Speed Signal Quality Tests 10

Probe Requirements 12

Differential Probe Connection for Hi-Speed Signal Quality Tests 12

Single-Ended SMA Cable Connection for Hi-Speed Signal Quality Tests 13

Single-Ended Probe Connection for Full/Low Speed Signal Quality Tests 14

Miscellaneous Cables and Devices 15

Additional Equipment and Set Up for Signal Quality Compliance Testing 16

High-Speed Electrical Test Bed Computer 16

Additional Set Up for Signal Quality Compliance Testing 17

2 Device Signal Quality Testing

Device Hi-Speed Signal Quality Test 20

Device Hi-Speed Connection - Differential Probe 24

Device Hi-Speed Connection - SMA Cables 25

Device Hi-Speed Compliance Test Packets 26

Device Full Speed Signal Quality Test 28

Device Full Speed Connection 30

Device Full Speed Compliance Test Packets 31

Device Low Speed Signal Quality Test 33

Device Low Speed Connection 35

Device Low Speed Compliance Test Packets 36

3 Host Signal Quality Testing

Host Hi-Speed Signal Quality Test 40

Host Hi-Speed Connection - Differential Probe 43

Host Hi-Speed Connection - SMA Cables 44

Host Hi-Speed Compliance Test Packets 44

1 2 3 4 5 6 7 8 9 10 ... 85 86

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Agilent Technologies DSOX4USBSQ USB 2.0 Manual de Serviço Página 5