RIGOL DS6000 Series - Manual (Page 34)

RIGOL
6 RP1000D User’s Guide
For example, when the attenuation ratio of the oscilloscope is
set to 1X, the attenuation ratio of the high voltage probe is set
to X200 and the vertical scale of the oscilloscope is 0.5V/div,
the actual vertical scale is 200X0.5V/div=100V/div. When the
input impedance of the oscilloscope is 50Ω, the actual vertical
scale is 2X200X0.5V/div =200V/div.
Note: When the attenuation ratio of the oscilloscope matches
the attenuation ratio of the high voltage probe, the vertical
scale displayed on the oscilloscope is the actual scale.