Nyquist frequency
The highest frequency that any digital oscilloscope can measure without errors is one-half of the sample rate or frequency. This
frequency is called the Nyquist frequency.
The FFT waveform displays the input signal frequency components from DC (0 Hz) to the Nyquist frequency.
Set up zoom AutoScroll
From the Vertical or Horiz /Acq menu, select Zoom Controls; then open the Scroll tab.
Overview. Use the AutoScroll control window to set the scroll speed and lock zoomed areas together.
To use.
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To scroll a single zoomed area, open the Zoom tab and select the zoom area (1–4).
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Open the Scroll tab and click an Auto Scroll arrow button.
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Click in the Scroll Speed entry box, and then use a multipurpose knob to set the scroll speed.
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To scroll multiple zoomed areas simultaneously, click Lock, and then click the zoomed areas (1–4) you want to scroll
through. This locks the zoomed areas in their relative horizontal positions.
Behavior. If the zoom areas are unlocked, the Horizontal Position and Factor controls affect only the selected zoom area. The
Horizontal Position and Factor will affect all zoom areas that are locked together, such that a change to one zoom area will
change the horizontal position and factor of all the locked zoom areas.
What do you want to do next?
Learn about the Zoom Setup controls.
Return to the Vertical Setup control window overview.
Return to the Horizontal Setup control window.
Learn about the Zoom Control window.
Set the cursor position (XY display)
From the Cursor menu, select Cursor Position.
Overview. Use the Cursor Position control window to position the cursors with the multipurpose knobs.
To use.
1. Click the Source drop-down list to select the measurement source for the cursor.
2. Click in one of the cursor position entry boxes and use a multipurpose knob to enter the cursor position.
Oscilloscope reference
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series 799
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