User Manual

2.8 Trigger System
The trigger determines when the oscilloscope starts to acquire data and display a
waveform. When a trigger is set up properly, the oscilloscope converts unstable
displays or blank screens into meaningful waveforms.
Here are three buttons and one Knob in the Trigger area. Showing as Picture.2-29:
LEVEL knob
Picture 2-29
Ŷ “TRIG MENU” Button: Press the “TRIG MENU” Button to display the “Trigger
Menu”.
Ŷ“LEVEL” Knob: The LEVEL knob is to set the corresponding signal voltage of
trigger point in order to sample. Press the “LEVEL” knob can set trigger level to
zero.
Ŷ“SET TO 50ˁ” Button: Use the “SET TO 50%” button to stabilize a waveform
quickly. The oscilloscope can set the Trigger Level to be about halfway between the
minimum and maximum voltage levels automatically. This is useful when you
connect a signal to the EXT TRIG BNC and set the trigger source to Ext or Ext/5.
Ŷ“FORCE” Button: Use the FORCE button to complete the current waveform
acquisition whether the oscilloscope detects a trigger or not. This is useful for
SINGLE acquisitions and Normal trigger mode.
Ŷ Pre-trigger/Delayed trigger: The data before and after trigger the trigger position
is typically set at the horizontal center of the screen, in the full-screen display the
6div data of pre-trigger and delayed trigger can be surveyed. More data of pre-trigger
and 1s delayed trigger can be surveyed by adjusting the horizontal position.
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