RIGOL DS1000B - Manual (Page 43)

RIGOL
User’s Guide for DS1000B Series 2-13
6. 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 2-13 and Figure 2-14 show the changes before and after
the inversion respectively.
Figure 2-13 Waveform before inversion
Figure 2-14 Waveform after inversion
Invert
Off
Invert
On