Instructions

Digital Storage Oscilloscope 42
2.9 Measure System
The oscilloscope displays graphs of voltage versus time and can help to measure the
displayed waveform. There are several ways to take measurements, using the
graticule, the cursors or performing an automatic measurement.
2.9.1
Scale measurement
Graticule: This method allows you to make a quick, visual estimate and take a simple
measurement through the graticule divisions and the scale factor.
For example, you can take simple measurements by counting the major and minor
graticule divisions involved and multiplying by the scale factor. If you counted 6 major
vertical graticule divisions between the minimum and maximum values of a waveform
and knew you had a scale factor of 50mV/division, you could easily calculate your
peak-to-peak voltage as follows:
6 divisions x 50mV/division = 300mV.
2.9.2
Cursor measurement
Cursor: This method allows you to take measurements by moving the cursors. Cursors
always appear in pairs and the displayed readouts are just their measured values.
There are two kinds of cursors: Amplitude Cursor and Time Cursor. The amplitude
cursor appears as a horizontal broken line, measuring the vertical parameters. The
time cursor appears as a vertical broken line, measuring the horizontal parameters.
The cursor measurement includes two modes: Manual mode and Tracking mode.
1. Manual mode:
Horizontal cursors or vertical cursors appear in pair to measure time or voltage, and the
distance between the cursors can be manually regulated. The signal source should be
set as a waveform to be measured before the cursors are used.
2. Tracking mode:
A horizontal cursor is intersected with a vertical cursor to form a cross cursor. The cross
cursor is automatically located on the waveform, and the horizontal position of the
cross cursor on the waveform is regulated by selecting “Cur A” or “Cur B” and rotating
the [UNIVERSAL] knob. The coordinates of the cursor point will be displayed on the