Teledyne LeCroy QPHY-USB - Manual (Page 4)

4
QPHY-USB Operator’s Manual Rev F
Host Full-Speed Downstream Signal Quality ........................................................................................................... 55
Inrush current ........................................................................................................................................................... 57
Hub Down Stream Low-Speed Signal Quality.......................................................................................................... 58
Hub Full-Speed Downstream Signal Quality ............................................................................................................ 59
Device and Hub Full-Speed Upstream Signal Quality Test ...................................................................................... 61
Device and Hub Full- or Low-Speed Upstream Signal Quality Test ......................................................................... 62
TF-USB-B TEST AND CALIBRATION PROCEDURES ......................................................... 63
Cable Deskewing ..................................................................................................................................................... 63
APPENDIX A ........................................................................................................................... 65
Receiver Sensitivity Test Waveform Setup .............................................................................................................. 65
MIN_ADD1 ........................................................................................................................................................ 65
IN_ADD1 ........................................................................................................................................................... 65
TABLE OF FIGURES
Figure 1. USB 2.0 Test Fixture (Part Number TF-USB-B) ..................................................................................... 9
Figure 2. TF-USB-B package ................................................................................................................................. 10
Figure 3. TF-USB-B Showing Power Supply Selection Jumper ........................................................................ 11
Figure 4. Probe Connection Pins Showing Grounds ......................................................................................... 11
Figure 5. Report menu in QualiPHY General Setup ............................................................................................ 12
Figure 6. The Test Report includes a summary table with links to the detailed test results .......................... 13
Figure 7. QualiPHY main menu and compliance test Standard selection menu ............................................. 15
Figure 8. QualiPHY configuration selection menu ............................................................................................. 16
Figure 9. QualiPHY test item selection menu ...................................................................................................... 17
Figure 10. Variable Setup and Limits Manager windows ................................................................................... 18
Figure 11. Start button ........................................................................................................................................... 19
Figure 12. Example of pop-up message box ....................................................................................................... 19
Figure 13. Example of pop-up connection diagram and dialog box ................................................................. 19
Figure 14. USB-IF HS Electrical Test Tool main menu ....................................................................................... 20
Figure 15. Device test High-Speed Upstream Near End Signal Quality ........................................................... 21
Figure 16. USB camera connected to the Signal Quality section ..................................................................... 22
Figure 17. Step 2 of 4: Probe Hookup .................................................................................................................. 22
Figure 18. Two SMA Cables Connected to the Test Fixture ............................................................................... 23
Figure 19. D600ST-SP Connected to the Test Fixture ........................................................................................ 23
Figure 20. Single-ended Probe Connection Example ........................................................................................ 24
Figure 21. Step 3 of 4: EL_2-EL_7 Signal Quality ............................................................................................... 24
Figure 22. HS Electrical Test Tool Setup for Device High-Speed Signal Quality ............................................. 25
Figure 23. Signal Quality Host Section ................................................................................................................ 25
Figure 24. Host High-Speed Downstream Signal Quality Analysis .................................................................. 26
Figure 25. Device High-Speed Upstream Signal Quality .................................................................................... 27
Figure 26. Host High-Speed packet parameters trace ........................................................................................ 28
Figure 27. Chirp Response Time .......................................................................................................................... 29
Figure 28. Chirp J and Chirp K Duration ............................................................................................................. 30
Figure 29. Chirp to Start of Frame Time ............................................................................................................... 31
Figure 30. Chirp K Latency .................................................................................................................................... 32
Figure 31. Time from Last Start of Frame to Host Suspend .............................................................................. 33
Figure 32. Time from Last Start of Frame to Device Suspend ........................................................................... 34
Figure 33. Host Disconnect Section of Test Fixture ........................................................................................... 35
Figure 34. Initial voltage before disconnect ........................................................................................................ 35
Figure 35. Voltage after disconnect ...................................................................................................................... 36
Figure 36. Hub and Device Fixture Connections for Upstream Repeater Test ................................................ 37
Figure 37. Initial signal acquisition for hub upstream repeater test ................................................................. 37
Figure 38. Hub upstream repeater sync field truncation and corruption ......................................................... 38