FLUKE MDA-550/FPC User Manual for the Fluke MDA-550/FPC Motor Drive Analyzer with one-year Premium Care, 500 MHz, 4-channel

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190 Series III

Users Manual

Observe that the top right of the screen shows SPECTRUM. See Figure 9. If it shows LOW

AMPL a spectrum measurement cannot be done as the waveform amplitude is too low. If it

shows WRONG TB the time base setting does not enable the test tool to show an FFT result. It is

either too slow, which can result in aliasing, or too fast, which results in less than one signal

period on the screen.

4. Press 1 for spectrum analysis on waveform A, B, C or D.

5. Press 2 to set the horizontal amplitude scale to linear or logarithmic.

6. Press 3 to set the vertical amplitude scale to linear or logarithmic.

7. Press 4 to toggle the spectrum function between off or on.

Figure 9. Spectrum Measurement

Waveform Comparisons

You can display a fixed reference waveform with the actual waveform for visual comparison.

To create a reference waveform and to display it with the actual waveform, do the following:

1. Press

P to show the SCOPE key labels.

2. Open the WAVEFORM OPTIONS menu with 4.

3. Use the cursor and E to:

a. Highlight Waveform.

b. Select Reference to open the WAVEFORM REFERENCE menu.

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FLUKE MDA-550/FPC Motor Drive Analyzer with one-year Premium Care, 500 MHz, 4-channel