104
Scope and Multimeter Operations
Operations
Trigger Controls
Triggering allows you to set the scope so that it only begins displaying a trace once predetermined
signal conditions, or triggers, are met. The trigger point is indicated by a plus sign (+) on the scope
grid. The plus sign can be dragged across the grid with the stylus to roughly position it. The trigger
controls allow you to precisely position the trigger.
z
To adjust trigger controls:
1.
Select
Setup
from the Scope toolbar. The Scope Multimeter Preferences dialog box opens.
2.
Select
Trigger
to open the Trigger Setup dialog box (
).
3.
Use the dialog box controls to set the trigger.
4.
Select
OK
to close the dialog box.
5.
Select
Back
twice to close the Scope Multimeter Preferences dialog box.
1— Source
—selects the triggering event:
- Trace 1—sets the trigger to channel 1.
- Trace 2—sets the trigger to channel 2.
- Trace 3—sets the trigger to channel 3.
- Trace 4—sets the trigger to channel 4.
- Cylinder—sets triggering to the firing of a cylinder detected by the optional RPM
Pickup or Secondary Ignition Adapter.
- None—switches triggering off.
2— Mode
—sets the method of triggering:
- Auto (automatic)—if a trigger is found, the waveform displays. If a trigger is not found
after about a half second, the waveform and a “trigger not found” message displays.
- Manual—if a trigger is found, the waveform displays. If a trigger is not found nothing
displays (no waveform and no message).
3— Slope
—sets triggering to the rising (top icon) or falling (lower icon) slope of the signal
waveform.
4— Vertical position
—moves the trigger position up and down on the grid.
5— Horizontal position
—moves the trigger timing left and right on the grid
