User manual

DSO-1102 USB
DSO-2202 USB
USER’S MANUAL 39
3.4 Set Trigger System
3.4.1 Set Trigger
Click “Trigger” in main menu.
The trigger determines when the oscilloscope starts to acquire data and display a
waveform. When a trigger is set up properly, it can convert unstable displays or blank
screens into meaningful waveforms.
If the oscilloscope wants to acquire a waveform, it collects enough data so that it can draw
the waveform to the left of the trigger point. The oscilloscope continues to acquire data
while waiting for the trigger condition to occur. The oscilloscope continues to acquire
enough data so that it can draw the waveform to the right of the trigger point after it
detects a trigger,.
The Edge trigger determines whether the oscilloscope finds the trigger point on the rising
or the falling edge of a signal. Select Edge trigger mode to trigger on Rising edge or
Falling edge.
The Pulse trigger occurs according to the width of a pulse. The signals can be detected
through setting up the pulse width condition.
Mode: Select the trigger mode.