User Guide

Chapter 6 MATH and Measurement RIGOL
MSO1000Z/DS1000Z User’s Guide 6-7
of signal.
require to accurately measurement.
Triangle
Better frequency
resolution.
Narrow band signal with stronger
interference noise.
8. Set the Display Mode
Press View to select “Half” (default) or “Full” display mode.
 Half: the source channel and the FFT operation results are displayed
separately. The time domain and frequency domain signals are displayed
clearly.
 Full: the source channel and the FFT operation results are displayed in the
same window to view the frequency spectrum more clearly and to perform
more precise measurement.
9. Set the Vertical Unit
The vertical unit can be selected as dB/dBm or Vrms. Press Unit to select the
desired unit and the default is dB/dBm. dB/dBm and Vrms use logarithmic mode
and linear mode to display vertical amplitude respectively. If you need to display
the FFT frequency spectrum in a relatively larger dynamic range, dB/dBm is
recommended.
10. Press Scale Reset to adjust the vertical scale of the operation results to the
optimal value according to the current configuration.
Tips
 You can adjust the center frequency and horizontal scale at the same time
using HORIZONTAL
SCALE.
 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”.