FAG Detector III User Manual page 61

measurement. Specify how many values are to be used for averaging.
You can set the resolution of the spectrum under FFT lines. Select 1600
(corresponds to 4096 samples) or 3200 FFT lines (corresponds to 8192
samples).
You can use Save time signal to specify when a time signal should be saved:
never, always, on pre-alarm or on main alarm.
Under Lowpass you can select a lowpass frequency from a list. This will be
used for the frequency band being measured. The sample rate in this case is
always 2.56 times the selected lowpass frequency.
Note that the filter calculation in the software is performed at the
200 Hz and 500 Hz settings and is therefore slower than at the
other frequencies. Therefore, you should only select this high
frequency if you really need it. Otherwise, select a greater numb er
of FFT lines: For example, it is faster to measure at 1 kHz / 3200
FFT lines than at 500 Hz / 1600 FFT lines, although b oth
measurements are performed at the same resolution.
Apart from Save time signal the time signal settings can no longer
b e changed after the first measurement as otherwise it would no
longer b e possib le to compare characteristic values.
Rotational speed
If the rotational speed also needs to be determined by the Detector during the
measurement select the Acquire turning speed option. The nominal rotational
speed as well as the maximum permissible deviation in rpms and pulses per
rotation should also be entered in the appropriate fields. If the rotational speed
deviates from the rotational speed band defined here during measurement, the
Detector issues an error message but still performs the measurement.
Bearing list template
In this section you can assign bearings from the bearing database
measuring point or delete an assignment. The associated kinematic frequencies
of the selected bearing are then also displayed in the evaluation diagram in the
FIS Viewer. Both when making assignments and deleting assignments you can
choose whether
to only apply bearing data in future
for all measurements already performed, or
Trendline 3
to the
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