Spider DSA User’s Manual
300
Figure 207: Measured signals setup – Order tracks
As it can be seen, each order track entry creates 3 signals:
OTRK denotes the continuous Order Track of the selected order for the selected
input channel.
OTRK_Up denotes the signal that is only updated when the RPM is going up.
When the RPM is going down, this signal is unchanged.
OTRK_Down denotes the signal that is updated only when the RPM is decreasing
or going down and remains unchanged with the increasing RPM.
Order value can also be changed by clicking on the Order Value column of the
order tracked signal and entering a new value. It has to be noted that changing the
Order value for an order tracked signal will also change the order value for the
corresponding Up and Down signals.
The signals that are not necessary can be deleted using the delete column towards
the rightmost side.
Band RMS Spectra
A band RMS Spectrum measures the Overall RMS level in a frequency band
specified by the user. It is tracked with respect to the change in the RPM.
Configuring the Band RMS Spectra is similar to configuring the Order Tracks. It
requires the channel and the frequency range of the band. By default, the EDM
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