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Example 1: Displaying a Waveform
Getting Started
The display shows the probe compensation signal. It is a 1 kHz square wave
of approximately 0.5 V amplitude. You can adjust the size and placement of
the waveform using the front-panel knobs.
Figure 1-8 shows the main VERTICAL and HORIZONTAL sections of the
front panel. Each has SCALE and POSITION knobs.
1. Turn the vertical SCALE knob clockwise. Observe the change in the
displayed waveform and the channel readout at the bottom of the display.
Figure 1-8: The VERTICAL and HORIZONTAL Controls
2. Turn the vertical POSITION knob first one direction, then the other.
Observe the change in the displayed waveform. Then return the wave-
form to the center of the graticule.
3. Turn the horizontal SCALE knob one click clockwise. Observe the time
base readout at the bottom of the display. The time base should be set to
200 s/div now, and you should see two complete waveform cycles on
the display.
When you first connect a signal to a channel and display it, the signal dis-
played may not be scaled and triggered correctly. Use the autoset function
and you should quickly get a meaningful display.
When you reset the digitizing oscilloscope, you see a clear, stable display of
the probe compensation waveform. That is because the probe compensation
signal happens to display well at the default settings of the digitizing oscillo-
scope.
Adjusting the
Waveform Display
Using Autoset