166 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
10 Triggers
1 Press [Default Setup].
2 Press the [Label] key to switch labels on.
3 Turn on any analog or digital channels that you will be using for the USB
signals.
4 Press the [Trigger] key.
5 In the Trigger Menu, press the Trigger softkey; then, turn the Entry knob to
select USB.
6 Press the Trigger: softkey to select where the USB trigger will occur:
• SOP (Start of Packet) — triggers at the Sync bit at the beginning of the
packet.
• EOP (End of Packet) — triggers at the end of the SE0 portion of the EOP.
• RC (Reset Complete) — triggers when SE0 is > 10 ms.
• Suspend (Enter Suspend) — triggers when the bus is idle > 3 ms.
End of packet trigger
D-,+
D+,-
Bus Idle
SEO portion of EOP
SOP
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