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Determine RPM from spectrum
It is possible to determine rpm from a vibration spec-
trum when the measurement is performed without
specifying the rpm.
To activate this function, go to MENU > ‘Settings’ >
‘General Settings’ > ‘File’ tab (1) and mark ‘Possible
to determine rpm from spectrum’ (2).
Under ‘Measuring point data’ for the measuring as-
signment, the following settings are required:
• ‘Variable speed’ enabled (3)
• ‘Measure RPM simultaneously’ set to ‘No’ (4)
When you press the MEASURE/SAVE (M/S) key, you
are prompted to select how to determine rpm. Select
‘Determine rpm from spectrum’ (5).
When the measurement is completed, press F3 (‘Spec-
trum’) to go to the Spectrum window. Use the LEFT/
RIGHT arrow keys to move Cursor A (6) to the assumed
rpm (1X) in the spectrum.
In the spectrum window, press the MENU key and select
‘Set RPM from cursor’ (7). A window (8) opens where
you can verify the selected peak and the corresponding
rpm value before saving with the ENTER key.
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