Chapter 6 Operations and Measurements    RIGOL 
MSO4000/DS4000 User’s Guide  6-41 
―  You can select measurement items of the X cursors and Y curosrs by 
setting the “horizontal measurement unit” (Time Unit) and 
“vertical measurement unit” (Vertical Unit) respectively. 
―  The measurement results include A->X, B->X, A->Y, B->Y, △X, 1/△X 
(only displayed when Time Unit is set to “s” or “Hz”) and △Y. 
 
4.  Specify the display area 
  When the delayed sweep is turned off (pressing HORIZONTAL 
  SCALE 
can turn the delayed sweep on or off), Screen is set to “Main” 
automatically and cannot be modified.  
 
  When the delayed sweep is turned on (pressing HORIZONTAL 
  SCALE 
can turn the delayed sweep on or off), the screen is divided into the Main 
and Zoom areas.  
Press Screen to select “Main” or “Zoom”.  
―  When “Main” is selected, the cursors are displayed in the Main area and 
are used to measure the parameters in the Main area; the 
measurement results are displayed in the Zoom area.  
―  When “Zoom” is selected, the cursors are displayed in the Zoom area 
and are used to measure the parameters in the Zoom zrea; the 
measurement results are displayed in the Main area. 
 
Note: When the measurement source is set to MATH, Screen is set to 
“Zoom” automatically and cannot be modified. 
 
5.  Specify the horizontal (X axis)/vertical (Y axis) unit 
1)  When the cursor display type is “X” or “X-Y”, you can select the horizontal 
measurement unit. 
Press Time Unit and turn the multi-function knob   to select the desired 
horizontal measurement unit. You can also press Time Unit continuously 
to switch the current horizontal measurement unit. The units available 
include “s”, “Hz”, “°” or “%”.  
  s: measure the time values at the X cursors (take the trigger position as 
reference). The measurement results include A->X, B->X, △X and 
1/△X. Wherein, A->X, B->X and △X denote time and 1/△X denotes 
frequency.  
  Hz: measure the frequency values at the X cursors (take the trigger 
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