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17-1
Chapter 17
Cursor and Zoom
Introduction
This chapter explains how to use Cursor and Zoom to display and investigate details of
Waveform, Trend, and Bar Graph displays. Cursor and Zoom have a certain amount of
interaction and are both operated by the arrow keys.
The Cursor is a vertical line that can be positioned on a point on a Waveform, Trend, or
Bar Graph. The measured values at that point are displayed in the screen header.
Zoom allows you to stretch and shrink the graph to get a better view of details.
Horizontal Zoom is available for Waveform and Trend.
Cursor on Waveform Displays
As an example the Scope Waveform display is used. Cursor and Zoom for the Transients
screen function in the same way.
Figure 17.1 shows the Scope Waveform display with Cursor and Zoom switched off. The
screen header shows the RMS values of the displayed waveforms.
Figure 17-1. Waveform display, no cursor
Figure 17-2. Waveform display, cursor on