Section 4 — Measurement Types and their Uses
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4. Specify your preferred spectral lines and samples — A value of 400
or 800 lines is typically adequate. If an inappropriate value is
chosen, your instrument will provide suggestions during the trial
impacts.:
a. Press Spectrum Waveform.
b. Use the navigation arrows to select the required option > Press
.
5. Select the required Fmax setting — Ensure the measurement range
covers the frequency range of interest. Typical values are Fmin = 1
Hz (60 cpm) and Fmax = approximately 10 times the machine
running speed:
a. Press Fmax Fmin.
b. Use the navigation arrows to select the required option > Press
.
6. Specify the total time required to take a waveform recording:
7. Press Wfm Duration Total Time.
8. Select the required option.
9. Press .
10. Select the force signal trigger level:
a. Press Hammer Trigger.
b. Press Change Channels to enable the appropriate
channels.
c. Press a button on the left beside the channel(s) you wish to
enable.
d. Press a button on the right beside the sensor you wish to
change > Select the required option.
MORE: Ensure you enter the Hammer’s sensitivity correctly (this
value is normally printed on the hammer). You can now enter the
Hammer Trigger level — Typically a low value such as 1% of the
hammer’s full scale range. You can adjust this when performing
Trial impacts.
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