Undo option
Before Autoset After Autoset
To undo the Autoset, press 
Undo (available for a few 
seconds). 
Adjusting the 
trigger level 
If the waveform is still 
unstable, try adjusting the 
trigger level up or down by 
using the Trigger Level knob. 
Autoset does not work in the following situation. 
  Input signal frequency less than 20Hz 
  Input signal amplitude less than 30mV 
Running and stopping the trigger 
 
In the trigger Run mode, the oscilloscope 
constantly searches for a trigger condition and 
updates the signal onto the display when the 
condition is met. 
In the trigger Stop mode, the oscilloscope stops 
triggering and thus the last acquired waveforms 
stay in the display. The trigger icon at the top of 
the display changes into Stop mode. 
Pressing the Trigger Run/Stop key 
switches between the Run and Stop 
mode.