Owner's manual

QPHY-USB Software Option
QPHY-USB Operator’s Manual Rev F 65
APPENDIX A
Receiver Sensitivity Test Waveform Setup
This section describes the characteristics of the required waveforms used for device or hub receiver sensitivity
testing. Either a two channel pattern generator, such as the Agilent 81130A, or a two channel arbitrary waveform
generator (AWG) can be used. Two Tabor WW1281A one channel AWG can also be used with a specific
synchronization cable. The specific steps used to create the waveforms will vary depending on the model of
generator being used. Please consult the documentation for details.
MIN_ADD1
Description: IN Token of nominal bitrate and amplitude with the shortest allowable sync field (12 bits).
Bitrate: 480 Mb/s
High Level (both channels): 400 mV
Low Level (both channels): 0 mV
Pattern length: 44 bits
Repetition Rate: 2 us (both channels should be at 0 mV for 916 bits following the pattern)
Pattern bits:
1 2 3 4 5 6 7 8 9 10 11 12
CH1 (D+) 0 1 0 1 0 1 0 1 0 1 0 0
CH2 (D-) 1 0 1 0 1 0 1 0 1 0 1 1
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
CH1 (D+) 0 1 0 0 1 1 1 0 0 1 0 1 0 1 0 1
CH2 (D-) 1 0 1 1 0 0 0 1 1 0 1 0 1 0 1 0
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
CH1 (D+) 0 1 0 0 1 1 1 1 0 0 0 0 0 0 0 0
CH2 (D-) 1 0 1 1 0 0 0 0 1 1 1 1 1 1 1 1
IN_ADD1
Description: IN Token of nominal bitrate, amplitude and sync field (32 bits).
Bitrate: 480 Mb/s
High Level (both channels): 400 mV
Low Level (both channels): 0 mV
Pattern length: 64 bits
Repitition Rate: 2 us (both channels should be at 0 mV for 896 bits following the pattern)
Pattern bits:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CH1 (D+) 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
CH2 (D-) 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0