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Application Examples
DSO8000E Series HandHeld Oscilloscope User Manual 53
6.9 Example 9: Using Overtime Trigger to Measure Long
Pulse Signal
It is not easy to observe some part of a long pulse signal by using the edge or pulse width trigger.
In such case, you can use the overtime trigger by following steps.
1. Push the TRIG MENU button to see the Trigger menu.
2. Select O.T. for the Type option; push the Polarity option button to select Normal; push the
Mode option button to select Auto; push the Coupling option button to select DC.
3. Click the Trigger Level key to adjust the trigger level and stabilize video signals.
4. Adjust the line number (NTSC: 0-525 lines).
5. Clck the horizontal TIME/DIV and the vertical VOLTS keys to display on the screen a
complete video signal triggering on a video line. See the figure below.
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