Fourier MultiLogPRO User Manual page 85

than expected. In Figure 27 below, the higher frequency sine wave was
sampled at 1/3 of its frequency. Connecting the sampled points yielded a
graph with a lower, incorrect frequency.
2.
Manual sampling
Use this mode for:
 Recordings or measurements that are not related to time.
 Situations in which you have to stop recording data after each
sample obtained, in order to change your location, or any other
logging parameter (Note: During the experiment NO CHANGES
can be made to the MultiLogPRO's configuration).
To start an experiment using manual data logging, set the RATE to Manual and
press the Enter button
the Enter button each time you want to collect a sample.
3.
Sampling Points
After you have chosen the sampling rate, choosing the number of points will
determine the logging period: Samples / Rate = Logging time. You can also
choose the duration of an experiment first, and then calculate the number of
samples: Samples = Logging time  Rate.
Figure 27: Frequency Aliasing
once to start the data recording, and then press
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