To de-activate the channel, press the Channel key 
twice (once if the channel menu is already 
selected). 
The Autoset function automatically configures the 
panel settings to the best viewing conditions, in the 
following way. 
  Selecting the horizontal scale 
  Positioning the waveform horizontally 
  Selecting the vertical scale 
  Positioning the waveform vertically 
  Selecting the trigger source channel 
  Activating the channels 
Autoset can be configured into two types of 
modes, AC Priority Mode or Fit Screen Mode.  
AC Priority mode will scale the waveform to the 
screen removing any DC component.  
Fit Screen Mode will fit the waveform to the best 
scale, including any DC components (offset).