Instructions
4.Advanced User Guidebook 
32 
How to Set the Trigger/Decoding System 
Trigger determines when DSO starts to acquire data and display waveform. Once 
trigger  is  set correctly,  it  can  convert the unstable display to meaningful 
waveform. 
When DSO starts to acquire data, it will collect enough data to draw waveform 
on left of trigger point. DSO continues to acquire data while waiting for trigger 
condition  to occur. Once it detects  a  trigger it will acquire enough data 
continuously to draw the waveform on right of trigger point. 
Trigger control area consists of 1 knob and 2 menu buttons. 
Trigger Level: The knob that set the trigger level; push the knob and the level 
will be set as the vertical mid point values of the amplitude of the trigger 
signal. 
Force: Force to create a trigger signal and the function is mainly used in 
"Normal" and "Single" mode. 
Trigger Menu: The button that activates the trigger control menu. 
Trigger Control 
The oscilloscope provides three trigger types: single trigger, logic trigger and bus 
trigger. Each type of trigger has different sub menus. 
Press Trigger Menu panel button, then bottom menu Trigger Type, select Single, 
Logic or Bus Trigger on  the popup right menus, turn the  M knob to choose 
different trigger types. 
Single trigger: Use a trigger level to capture stable waveforms in two channels 
simultaneously. 
Logic trigger: Trigger the signal according to the condition of logic relationship. 
Bus trigger: Set bus timing trigger. 
The  Single Trigger, Logic Trigger and  Bus Trigger  menus are described 
respectively as follows: 
Single Trigger 
Single trigger has eight types: edge trigger, video trigger, pulse trigger, slope trigger, 
runt trigger, windows trigger, timeout trigger and Nth edge trigger. 
Edge Trigger: It occurs when the trigger input passes through a specified voltage 
level with the specified slope. 
Video Trigger: Trigger on fields or lines for standard video signal. 
Pulse Trigger: Find pulses with certain widths. 
Slope Trigger: The oscilloscope begins to trigger according to the signal rising or 










