To Use Usb Triggering - Agilent Technologies InfiniiVision 6000 Series User Manual

4 Triggering the Oscilloscope

To use USB triggering

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USB trigger will trigger on a Start of Packet (SOP), End of
Packet (EOP) signal, Reset Complete (RC), Enter Suspend
(Suspend), or Exit Suspend (Exit Sus) on the differential USB
data lines (D+ and D-). USB Low Speed and Full Speed are
supported by this trigger.
D+,–
Bus Idle
D–,+
SOP
1 Press the More key in the Trigger section of the front panel,
rotate the Entry knob until USB is displayed in the Trigger
softkey, then press the Settings softkey to display USB trigger
menu.
Trigger on: Signal
condition speed
2 Press the Speed softkey to select the speed of the transaction
being probed.
You may select Low Speed (1.5 Mb/s) or Full Speed (12 Mb/s).
3 Press the D+ and D– softkeys to select the channel connected
to the USB signal D+ and D– lines. The D+ and D– labels for
the source channels are automatically set.
Currently selected
USB trigger
D+ source D– source
channel channel
6000 Series Oscilloscope User's Guide
End of packet trigger
SE0 portion of EOP
Trigger level
data source
or threshold
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