5-15
VIBXPERT 11.2010
Measurement tasks
Order filter
After the measurement, the order filter can be changed with the +/-
key.
Alternative:
• Press the MENU button and select 'Order'.
• Move the joystick to the right, and select the required order (1-5).
Scaling
To magnify the scaling of the diagram, move the joystick up. If a
phase vector then moves out of the diagram as a result, the maximum
display range is also specified relative to the longer (no longer
visible) vector (e.g. '92% of A').
Coherence (Cross Channel)
The coherence factor is a measure of the quality of the measurement
and indicates how strongly the signals of both channels are coupled.
If the factor is close to 1, the measurement is usable.
Phase trend
If you would like to record the phase trend as a function of time or
rpm, save the individual measurements by 'Appending' to a file (see
also p. 3-29). In the display setup for the trend display (p. 4-18),
select either 'Time' or 'rpm' ('Phase over...' parameter). The rpm value
and the date of each measurement appear in the lower display field.
To open an individual measurement result in the trend display, press
the F key, and click on 'Details'.
F
Left:
Time-based phase trend
Right:
RPM-based phase trend
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