Rigol DS6000 Series User Manual page 144

RIGOL
Frequency, expressed in Hz. Use HORIZONTAL
HORIZONTAL
position of the FFT frequency spectrum respectively.
5. Set the Vertical Unit
The unit of the vertical axis can be in dB or Vrms, which displays the vertical
amplitude in logarithmic mode and linear mode respectively. If you need to
display the FFT frequency spectrum in a relatively larger dynamic range, dB is
recommended. Press Scale to select the desired unit. The default unit is dB.
6. Set the Vertical Scale and Vertical Position
Use VERTICAL
scale and the vertical position of the FFT frequency spectrum respectively.
7. Turn on or off the anti-aliasing
Press Anti-Aliasing to turn the anti-aliasing on or off.
8. Modify the label of the math operation waveform
Press Label to turn on the label modifying interface. You can refer to the
introduction in "Channel Label" to set the label of the math operation
waveform. Note: The new label can include uppercase English letters (A to Z),
lowercase English letters (a to z), numbers (0 to 9), underlines and spaces and
the length cannot exceed 4 characters.
Tips
Signals with DC components or deviation would cause error or deviation of the

FFT waveform components. To reduce the DC components, set the "Channel
Coupling" to "AC".
To reduce the random noise and aliasing frequency components of repetitive

or single pulse, set the "Acquisition Mode" of the oscilloscope to "Average".
6-8
POSITION to set the horizontal scale and the horizontal
SCALE and VERTICAL
6 To Make Measurements
SCALE and
POSITION to set the vertical
DS6000 User's Guide