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Auto: When the oscilloscope meets the trigger condition, it completes a trigger acquisition once; when 
the trigger condition is not met, it can run the acquisition waveform freely. 
Normal: When the oscilloscope meets the trigger condition, the input waveform is displayed; when the 
trigger condition is not met, the original waveform is displayed. 
8. Press the Holdoff softkey and turn V0 to set the time that the oscilloscope waits before a trigger to 
the next trigger, so that complex waveforms are displayed stably. 
2.7.6. Window Trigger   
Windows trigger provides a high trigger level and a low trigger level. The instrument triggers when the 
input signal passes through the high trigger level or the low trigger level.   
 
⚫ If  the  lower  and  the  upper  trigger  levels  are  both  within  the  waveform  amplitude  range,  the 
oscilloscope will trigger on both rising and falling edge.   
⚫ If the upper trigger level is within the waveform amplitude range while the lower trigger level is out 
of the waveform amplitude range, the oscilloscope will trigger on rising edge only.   
⚫ If the lower trigger level is within the waveform amplitude range while the upper trigger level is out 
of the waveform amplitude range, the oscilloscope will trigger on falling edge only.   
1. Press the [Trig Menu] button on the front panel to enter the Trigger function menu.   
2. Press the  Type softkey, then use the Multifunctional Knob to select Window and push down the 
knob to confirm.   
3. Press the Source softkey, turn the Multifunctional Knob to select CH1~CH2 as the trigger source.   
4. Press Level softkey to select Lower or Upper trigger level or both levels, then turn the Trigger Level 
Knob  to  adjust  the  position.  The  trigger level  values  are  displayed  at  the  upper  right  corner  of  the 
screen.  The  trigger  different  level  value  between  Upper  and  Lower  is  displayed  at  the  upper  right 
corner of the screen.   
The Lower trigger level cannot be upper than the upper trigger level. V1 means the upper trigger level 
while V2 means the lower trigger level. 
5. Press the Mode softkey, turn V0 to select the trigger mode (auto, normal), and press V0 to confirm. 
Auto: When the oscilloscope meets the trigger condition, it completes a trigger acquisition once; when 
the trigger condition is not met, it can run the acquisition waveform freely. 
Normal: When the oscilloscope meets the trigger condition, the input waveform is displayed; when the 
trigger condition is not met, the original waveform is displayed.