Inverting the input signal
Use this procedure to invert (flip vertically) the signal. A typical reason to invert
a signal is to use the inverted signal to create a math waveform.
1. Push the Vertical Menu button for the channel input that you want to set.
2. Push the Invert side-menu button to toggle between Off for normal operation
and On to invert the polarity of the signal in the preamplifier.
Setting channel input parameters
48 TBS2000B Series Oscilloscopes User Manual