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event via the Trigger start time.
Start / Stop RPM (Runup / Coastdown): Rotational speed at which
the measurement should start or stop.
RPM deviation (Runup/Coastdown): The current, averaged
measurement value is not saved until the rpm has changed by
the value set here (see p. 5-11).
RPM range (Phase - Cross Channel): Maximum RPM range for
calculating the phase correlation.
Sensor angle (Orbit): The angle between the two sensors can be
freely selected between 5° and 175°.
Displayed turns (Orbit): The time waveform can be displayed over
multiple rotations* to check the phase stability. When the phase
is stable, the keyphaser mark in the orbit remains constant.
A2. Measurement tasks in the 'Signals' tab
Measurement quantity: see section A1 - 'Overall values' (prev. page).
Filter Type (Envelope): Software / Hardware; envelope calculation
using a software algorithm or via a hardware module.
HP/LP Filter (Envelope)
36-36 kHz; 1-40/ 20/ 10/ 5/ 2,5 kHz (hardware filter)
0.5 / 2.5 / 5 / 10 / 20 / 40 kHz (lowpass (LP) software filter)
Highpass (HP) software filter from 100Hz to LP, freely adjustable
Demodulation factor (Envelope): Ratio of the highpass frequency
prior to demodulation to the lowpass frequency after
demodulation.
Lower / Upper Frequency (f
which can appear in the signal. The lower frequency setting
of 0.5 Hz or 1 Hz only applies for spectra and overall value
measurements. For the 'Displacement' and 'User-defined'
measurement quantities, the DC component in the signal can be
recorded (lower frequency = DC).
For envelope spectra only the 'upper frequency' (f
/ f
): Lowest and highest frequency
min
max
* up to max. number of averages
Left:
) is specified.
Keyphaser mark in the orbit remains
max.
stable over multiple rotations.
Right:
Setup for envelope spectrum
Options
Acceleration - low speed
3-23
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