Use Vertical Position And Scale Knobs - Vevor Sds1102 Benutzerhandbuch

 DC component or offset can cause incorrect magnitude values of
FFT waveform. To minimize the DC component, choose AC
Coupling on the source signal.
 To reduce random noise and aliased components in repetitive or
single-shot events, set the oscilloscope acquisition mode to
average.
What is Nyquist frequency?
The Nyquist frequency is the highest frequency that any real-time
digitizing oscilloscope can acquire without aliasing. This frequency is
half of the sample rate. Frequencies above the Nyquist frequency
will be under sampled, which causes aliasing. So pay more attention
to the relation between the frequency being sampled and measured.

Use Vertical Position and Scale Knobs

1. The Vertical Position knob is used to adjust the vertical
positions of the waveforms.
The analytic resolution of this control knob changes with the
vertical division.
2. The Vertical Scale knob is used to regulate the vertical
resolution of the wave forms. The sensitivity of the vertical
division steps as 1-2-5.
The vertical position and vertical resolution is displayed at the
left bottom corner of the screen (see Figure 4- 1).
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