8
5.2
Horizontally moving waveform
In the stop mode, the user can move the waveform left and right.
6 Trigger system
About trigger
The oscilloscope will capture a frame of waveform only after the waveform
meets the pre-set conditions. This action of capturing the waveform according to the
conditions is the trigger.
What does trigger do?
1.
Trigger can stabilize the waveform on the screen.
2.
Capture the segment of the waveform you want to observe.
The trigger supported by the oscilloscope is edge trigger, including rising edge
trigger and falling edge trigger.
6.1
Trigger level
In the edge trigger mode, the trigger condition appears only when the
waveform
crosses up or down the trigger level.
The trigger level is automatically adjusted by default. Here's how to adjust
manually:
a. In Menu-> Trigger, change "Trigger Level" to "Manual".
b. Press and hold the Func key, then press the up and down keys to move the
trigger level.
The arrow circled above is the trigger level position, and when the edge of the
square wave in the above figure passes upwards through the position of this arrow, a
trigger is formed (the waveform only forms a trigger when it crosses the trigger level
up or down).