EZ Digital OS-5060A, Operation Manual

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2-3-2 Time Interval Measurements
The second major measurement function of the triggered-sweep oscilloscope is
the measurement of time interval. This possible because the calibrated timebase results
in each division of the CRT screen representing a known time interval.
Basic Technique. The basic technique for measuring time interval described in the
Following steps. This same technique applies to the more specific pro-cedures and
variations that follow.
1. Set up scope as described in 2-3-2 Single-trace Operation.
2. Set the A TIME/DIV switch (22) so the interval you wish to measure is totally on
screen and as big as possible. Make certain the A VARIABLE control (25) is click-
stopped fully clockwise. If not, any time interval measurements made under this
condition will be inaccurate.
3. Use the Vertical POSITION control (17) or (18) to position the trace so the central
horizontal graticule line passes through the points on the waveform between which
you want to make the measurement.
4. Use the Horizontal POSITION control (26) to set left-most measurement point on a
nearly vertical graticule line.
5. Count the number of horizontal graticule divisions between the Step 4 graticule line
and the second measurement point. Measure to a tenth of a major division. Note that
each minor division of the central horizontal graticule line is 0.2 major division.
6. To determine the time interval between the two measurement points, multiply the
number of horizontal divisions counted is Step 5 by setting of the TIME/DIV
If the TIME VARIABLE knob (25) is pulled (X10 magnification), be certain to
divide the TIME/DV switch setting by 10.
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