User`s guide

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DATACOLLECTOR USER’S GUIDE
Figure 14: Time Intervals and Photogates
Frequency Function
In CPO Timer Mode, the DataCollector can measure the frequency of anything
that breaks the light beams in the photogates regularly, or the frequency of signals
applied to the inputs, such as those from the CPO Sound & Waves machine. The
highest frequency that can be measured is 19,999 Hz and the lowest is 0.1 Hz. For
very low frequencies (<100 Hz) it is more accurate to use the Period Function,
measure the period (T), and invert (f = 1/T).
Frequency Function can also be used to measure:
• the angular speed of a rotating gear