RIGOL 
 User’s Guide for DS1000B series 
 
Knobs Explanation 
The horizontal controls change the horizontal scale and position of waveforms. The 
horizontal center of the screen is the time reference for waveforms. Changing the 
horizontal scale causes the waveform to be expanded or compressed with respect to 
the screen center.  Horizontal position changes the displayed waveform position, 
relative to the trigger point. 
1.  The horizontal 
 knob adjusts the horizontal position of all 
channels (including Math) waveforms. The resolution of this control varies with 
the time base. Pressing this button clears the trigger offset and moves the 
trigger point to the horizontal center of the screen. 
2.  Use 
 to select the horizontal time/div (scale factor) for the main or 
the Delayed scan time base. When Delayed Scan is enabled, it changes the 
width of the window zone by changing the Delayed Scan time base.