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PicoScope 6 User Guide
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Copyright 2006 Pico Technology Limited. All rights reserved.PSW044-2.0
5.13
Time rulers
The time rulers measure time on a scope view or frequency on a spectrum view (if
available).
In the scope view above, the two white squares on the time axis are the time ruler
handles. You can drag these from the bottom left corner to the positions on the time
axis you want to measure. The two vertical dashed lines are the time rulers.
Ruler tool tip
If you point to one of the rulers, as we have done in the example above, PicoScope
displays a tool tip with the ruler number and the time value of the ruler.
Ruler legend
The table at the top of the view is the ruler legend. In this example, the table shows
that time ruler 1 is at 148.0 microseconds, ruler 2 is at 349.0 microseconds and the
difference between them is 201.0 microseconds.
Frequency legend
The frequency legend in the bottom right-hand corner shows 1/D, where D is the
time difference between the two rulers. 1/D is 4.975 kilohertz in this example. The
accuracy of this calculation depends on the accuracy with which you have positioned
the time rulers. For greater accuracy with periodic signals, use the frequency
measurement function built in to PicoScope.
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