b. Tap Trigger Type and select a trigger type. This example uses Runt.
c. Tap Source and select a trigger source.
d. Tap Trigger When and select the condition on when to trigger on a runt signal.
e. Tap a Polarity icon to set the runt pulse polarity to detect (positive, negative, or either).
f. Tap the Upper Threshold and Lower Threshold fields and set the levels that a signal must cross to be considered a
valid signal. Signals that don't cross both these thresholds are runt signals.
g. Tap anywhere outside the B Trigger Event menu to close it.
5. To trigger on a specific occurrence of the B trigger event:
a. Tap After the A Trigger Event is found: Trigger on the Nth Trigger Event button in the main Trigger menu.
b. Tap Where N is: and use the multipurpose knob to set the oscilloscope to trigger on the Nth occurrence of a B trigger
event.
6. To trigger on the B event after a specific time delay:
a. Tap After the A Trigger Event is found: Trigger on the 1st B Event button.
b. Tap After a Delay of: and use the multipurpose knob to set the desired delay time to wait before detecting and
triggering on a B trigger event. You can also double-tap the field and use the virtual keypad to enter a delay time.
Set up trigger on a parallel bus
Use this procedure to set up triggering on a parallel bus.
Use this procedure if you have already created a parallel bus.
1. Double-tap the Trigger badge.
2. Tap the Trigger Type field and select Bus from the list.
3. Tap the Source field and select the parallel bus on which to trigger.
4. Tap either the Binary or Hex Data boxes to enter the parallel bus data value, in either Binary or Hexadecimal format, on
which to trigger. The number of bits shown depends on the number of sources (channels) in the parallel bus.
a. Use multipurpose knob A to select the digit or digits to change.
b. Use multipurpose knob B to change the value of the selected digits.
Set up trigger on a serial bus
Use this procedure to set up triggering on a serial bus.
Use this procedure if you have already created a serial bus. Serial buses require purchasing and installing serial bus options.
See Serial bus and trigger options on page 14.
1. Double-tap the Trigger badge on the Settings bar.
2. Tap Trigger Type and select Bus from the list.
3. Tap Source and select a serial bus from the list.
4. Tap Trigger On and select what to trigger on from the list. The displayed fields and controls depend on the bus type and
Trigger On selection. Use these fields to trigger on a specific bus condition.
Advanced triggering
120 MSO54, MSO56, MSO58, MSO58LP, MSO64 Help
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