Teledyne LeCroy QPHY-USB - Manual (Page 3)

QPHY-USB Software Option
QPHY-USB Operator’s Manual Rev F
3
TABLE OF CONTENTS
INTRODUCTION ........................................................................................................................ 6
Device tests ................................................................................................................................................................ 6
Host tests ................................................................................................................................................................... 6
Hub tests .................................................................................................................................................................... 7
Equipment list ............................................................................................................................................................. 8
LeCroy equipment............................................................................................................................................... 8
Additional equipment .......................................................................................................................................... 8
No cost equipment .............................................................................................................................................. 8
USB Test Fixture ........................................................................................................................................................ 9
QualiPHY Compliance Test Platform ....................................................................................................................... 12
INSTALLATION ....................................................................................................................... 14
Oscilloscope Option Key Installation ........................................................................................................................ 14
Typical (Recommended) Configuration .................................................................................................................... 14
Remote (Network) Configuration ............................................................................................................................. 14
Oscilloscope Selection ............................................................................................................................................. 14
Accessing the QPHY-USB Software using QualiPHY ............................................................................................. 15
Customizing QualiPHY ............................................................................................................................................. 17
QPHY-USB Operation .............................................................................................................................................. 19
USB-IF Test Scripts .................................................................................................................................................. 20
Test Bed Computer .................................................................................................................................................. 20
MATLAB ................................................................................................................................................................... 21
USB Test Wizard ...................................................................................................................................................... 21
HIGH-SPEED SIGNAL QUALITY ............................................................................................ 25
Host and Hub Downstream High-Speed Signal Quality ........................................................................................... 25
Device and Hub Upstream High-Speed Signal Quality ............................................................................................ 26
HIGH-SPEED PACKET PARAMETERS ................................................................................. 28
HOST HIGH-SPEED CHIRP TIMING ...................................................................................... 29
Host High-Speed Chirp Timing ................................................................................................................................. 29
Device and Hub High-Speed Chirp Timing .............................................................................................................. 31
HIGH-SPEED SUSPEND RESUME RESET TIMING .............................................................. 33
Host High-Speed Suspend Resume Reset Timing .................................................................................................. 33
Device or Hub High-Speed Suspend Resume Reset Timing ................................................................................... 34
HOST AND HUB DISCONNECT ............................................................................................. 35
HUB HIGH-SPEED UPSTREAM REPEATER ......................................................................... 37
HUB HIGH-SPEED DOWNSTREAM REPEATER .................................................................. 40
RECEIVER SENSITIVITY ........................................................................................................ 42
FULL AND LOW-SPEED TESTS ............................................................................................ 46
Equipment requirements .......................................................................................................................................... 46
Standard USB products .................................................................................................................................... 46
Hub and Host Drop Test ........................................................................................................................................... 48
Self-powered Hubs or Hosts ............................................................................................................................. 48
Bus-powered Hubs ........................................................................................................................................... 49
Test Criteria ...................................................................................................................................................... 49
Droop Test ................................................................................................................................................................ 50
Test Steps ......................................................................................................................................................... 51
Test Criteria ...................................................................................................................................................... 51
Test Results ...................................................................................................................................................... 52
Reporting Results ............................................................................................................................................. 52
Host Low-Speed Downstream Signal Quality .......................................................................................................... 53