174 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
10 Triggers
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.
• Exit Sus (Exit Suspend) — triggers when exiting an idle state > 10 ms.
This is used to see the suspend/resume transition.
7 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).
8 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.
To Next Page
Loading...
