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Edge Trigger
An edge trigger's logical condition is met when the waveform passes through a set voltage level
while increasing (positive slope) or passes through a set voltage level while decreasing (negative
slope).
In the following diagram, the trigger event will occur when the slope is positive at the left-most
trigger point. Conversely, the trigger event will occur at the right-most trigger point for a negative
slope.
Figure 48 - Edge trigger
To set the Edge Trigger
1.
Press the Setup button on the front panel to enter the trigger menu.
2.
Press the Type softkey. Turn the Universal Knob to highlight Edge and push the knob to select.
3.
Press the Source softkey. Turn the Universal Knob to select one of the analog channels, EXT,
EXT/5 or AC Line as the trigger source.
4.
Press the Slope softkey. Turn the Universal Knob to select the desired trigger edge (Rising,
Falling or Alter), and then press the knob to confirm. The current trigger slope is displayed at
the upper right corner of the screen. Alter is an alternating trigger that will trigger on
alternate rising and falling slopes.
5.
Adjust the Trigger Level knob to get stable trigger.
