Measurement-computing Medallion Rotate rev.2.3 Manual do Utilizador descarregar pdf (Página 17)

October 2000 Medallion Rotate Manual

DISPLAYING DATA AND PROCESSING A SIGNAL

The second section of the Tutorial leads you through displaying a time

waveform plot. It then describes the steps to process a tachometer signal to get

the instantaneous machine speed in RPM (revolutions per minute).

The Demo_Data.MRD file contains two channels.

• Channel 1 is a time waveform of a pulse tachometer signal varying

between 0 and 4 Volts.

• Channel 2 is a time waveform from a vibration sensor.

PLOT A TIME WAVEFORM

1. Make sure that Channel 1 is the

only selected channel in the

Channel List window. Then

right-click Channel 1 and

choose Plot. You can also do

one of the following:

• Select the channel and click the Plot button .

• Double-click the channel.

• Select the channel and choose Plot from the Channels menu.

Medallion Rotate displays a plot of the time waveform.

ZOOM IN ON THE TIME WAVEFORM

2. Right-click the plot and choose

Zoom.

3. Click and drag the mouse over a

part of the plot to enlarge that

part of the plot.

The plot redraws the zoomed part

when you release the mouse button.

Note the signal amplitude is from -0.5 to

4 Volts.

4. Right-click the plot and choose

Auto-scale to show the whole signal again.

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Measurement-computing Medallion Rotate rev.2.3 Manual do Utilizador Página 17