103
M2 Scope/Meter
M2 Scope/Meter Operations
Trigger Selections
Triggering allows you to set the scope so that it begins sampling and displaying a trace once
predetermined signal conditions, or triggers, are met. Triggering produces a much more stable
waveform. The trace always begins at the trigger point, so the image does not appear to flicker or
drift as it updates.
1— Mode
2— Trigger channel
3— Trigger slope
4— Trigger level
Figure 8-15
Sample trigger screen
With the scope in the trigger mode the soft keys perform the following functions:
•
F2 Slope
—pressing the F2 key switches triggering back and forth between the rising
(positive) edge and trailing (negative) edge of the waveform. A graphic in the upper-right
corner of the display screen shows the currently selected slope.
•
F3 Level
—short presses of the F3 key incrementally increase the trigger voltage level. An
indicator to the right of the screen graph shows the current trigger voltage level. Short presses
of the Range key incrementally decrease the trigger voltage level. Press and hold either key
(F3 or Range) to return to the default setting.
•
F4 Channel
—a press of the F4 key switches triggering between channel 1 (CH1) and channel
2 (CH2). The channel currently selected for triggering is shown at the top of the screen.
NOTE:
i
Triggering is not available when the timebase setting is between 1 second and 10 seconds.
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