174 Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide
10 Triggers
As you press the D+ or D– softkey (or rotate the Entry knob), the D+ and D– label
for the source channel is automatically set and the channel you select is shown
in the upper-right corner of the display next to "USB".
If you have connected the oscilloscope's analog source channels to the D+ and
D- signals: Adjust the trigger level for each connected analog channel to the
middle of the waveform by pressing the D+ or D- softkey, then turning the
Trigger Level knob.
If you have connected the oscilloscope's digital source channels to the D+ and
D- signals (this applies to MSO model oscilloscopes only): Press the [Digital] key
and select Thresholds to set an appropriate threshold level for the digital
channels.
The value of the trigger level or digital threshold is displayed in the upper-right
corner of the display.
Serial Trigger
With serial decode option licenses (see "Serial Decode Options" on page 123),
you can enable serial trigger types. To set up these triggers, see:
• "ARINC 429 Triggering" on page 407
• "CAN Triggering" on page 347
• "FlexRay Triggering" on page 362
• "I2C Triggering" on page 372
• "I2S Triggering" on page 392
• "LIN Triggering" on page 355
• "MIL-STD-1553 Triggering" on page 401
• "SPI Triggering" on page 383
• "UART/RS232 Triggering" on page 417
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