Measurement Computing Medallion Rotate rev.2.3 - Manual (Page 32)

32
Medallion Rotate Manual October 2000
E
XAMPLE
This example is from the demonstration data included with Medallion
Rotate.
1. Process the tachometer signal to
get the smoothed speed curve.
See “Process a Tachometer
Signal.”
2. Then use Computed Order
Tracking to get the order data.
Select both the smoothed
machine speed curve and the
data channel in the Channel List
window, then do one of the
following:
• Click the Computed Order Tracking button .
• Choose Computed Order Tracking from the Analysis menu.
3. Press F1 for an
explanation of the dialog
box. After selecting the
desired parameters,
choose OK to display the
Bode plot of the orders.
T
HEORY
The order functions created by the Computed Order Tracking function are
leakage free because the instantaneous machine speed controls the resampling
in the Computed Order Tracking algorithm. Computed Order Track plots are
created from many more data points than the orders plotted in a Waterfall, and
are a more precise picture of each order.