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RIGOL Chapter 6 Operations and Measurements
6-8 MSO7000/DS7000 User Guide
Method".
➢ "Start-End" (start frequency to stop frequency): start frequency refers to
the frequency at the left side of the screen. Press Start to set the start
frequency of the frequency-domain waveform. For setting methods, refer to
descriptions in "Parameter Setting Method". Stop frequency refers to
the frequency at the right side of the screen. Press End to set the stop
frequency of the frequency-domain waveform. For setting methods, refer to
descriptions in "Parameter Setting Method".
⚫ Press More → Peak Search to enter the peak search menu.
Press Peak Search continuously to enable or disable the peak search function.
When enabled, the peak search results are displayed on the screen, as shown in
the figure below. Enable the touch screen and tap the "Math" label at the top of
the peak search results to switch among Math1-Math4.
➢ Press Peak Number, then rotate the multifunction knob or use the
pop-up numeric keypad to set the number of peaks. The available range is
from 1 to 15. By default, it is 5.
➢ Press Threshold, then rotate the multifunction knob or use the pop-up
numeric keypad to set the threshold of the peak.
➢ Press Excursion, then rotate the multifunction knob or use the pop-up
numeric keypad to set the excursion of the peak.
➢ Press Table Order, then rotate the multifunction knob to select the
sorting mode of the peak. Press down the knob to select it. You can also
press Table Order continuously or enable the touch screen to select it. The
available sorting mode is "Amp Order" and "Freq Order". By default, it is
"Amp Order".
➢ Press Export, and the save setting menu is displayed. You can export the
peak search results to the internal memory or the external USB storage
device in CSV format. For detailed saving operation, refer to descriptions in
"Store and Load".
⚫ Press More → Window to select the desired window function.
Spectral leakage can be considerably decreased when a window function is used.
MSO7000/DS7000 provides 6 FFT window functions (as shown in Table 6-1)
which have different characteristics and are applicable to measuring different
waveforms. You need to select the window function according to the
characteristics of the waveform to be measured.
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