OWON HDS Series Handheld DSO & DMM 8-Advanced Function of Oscilloscope
figure 37: Waveform Mathematics
8.4 Setting the Trigger System
The Trigger defines the time when the acquisition of data and display of waveform start. If it is set
correctly, the trigger can turn an unstable display into a significant waveform.
When starting the acquisition of data, the oscilloscope collects sufficient data to draw the
waveform at the left side of the triggering point. With waiting for the triggering condition, the
oscilloscope is gathering data continuously. After a trigger is detected, the oscilloscope gathers
enough data continuously to draw the waveform at the right side of the triggering point.
To make a trigger mode setting, do the following:
1. Press the MENU key and the function menu appears at the right of the screen.
2. Press the MENU ▲ or MENU ▼ key to select TRIG MODE and five items selectable are
displayed at the bottom of the screen.
3. Select and press one from F1 through F5 key to make a different setting.
4. Press the OSC OPTION key and the following is shown on the screen:
◄/► – Time
▲/▼ – Trig
5. Press the OSC ▲ or OSC ▼ key to adjust the trigger level position.
Now, look at the display, you can see a screen in the following figure38.
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