GDS-2000A Series User Manual 
132 
Select Waveform Update Mode 
 
The display update mode is switched 
automatically or manually according to the 
timebase and trigger.  
Updates the whole displayed waveform at 
once. Automatically selected when the 
timebase (sampling rate) is fast. 
Updates and moves the waveform 
gradually from the right side of the 
display to the left. Automatically selected 
when the timebase (sampling rate) is slow.  
Select Roll Mode 
Manually 
1.  Press the Trigger Menu key. 
2.  Press Mode from the bottom menu 
and select Auto (Untriggered Roll) 
from the side menu. 
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