Rigol VS5000 Series User Manual page 41

RIGOL
5. To Invert a Waveform
Invert turns the displayed waveform 180 degrees, with respect to the ground level.
When the oscilloscope is triggered on the inverted signal, the trigger is also inverted.
Figure 2-8 and 2-9 show the changes before after inversion.
© 2008 RIGOL Technologies, Inc.
Figure 2-8
The Waveform before Inversion
Figure 2-9
The Waveform of Inversion
User's Guide for VS5000 Series
Invert OFF
Invert ON
2-9