Chapter 4 195
Analyzing and Displaying Test Data
Displaying Test Data
Polar Plot Graphically displays data on a polar scale when
separate information is available for radius and
angle data.
Spectrum (Freq) A menu that contains frequency domain displays:
Magnitude Spectrum, Phase Spectrum,
Magnitude vs. Phase (Polar), and Magnitude vs.
Phase (Smith). Inputs must be Waveform,
Spectrum, or an array of Coords. Waveform inputs
are automatically changed to the frequency
domain with a Fast Fourier Transform (fft).
Strip Chart Graphically displays the recent history of data that
is continuously generated while the program runs.
For each y input value, the x value is incremented
by a specified Step size. When new data runs off
the right side of the display, the display
automatically scrolls to show you the latest data.
Waveform (Time) Graphically displays Waveforms or Spectrums in
the real time domain. Spectrums are automatically
converted to the time domain using an Inverse
Fast Fourier Transform (ifft). The x axis is the
sampling units of the input waveform.
X vs. Y Plot Graphically displays values when separate data
information is available for X and Y data.
XY Trace Graphically displays mapped arrays or a set of
values when y data is generated with evenly-
spaced x values. The x value that is automatically
generated depends on the data type of the trace
data. For example, a Real trace would generate
evenly-spaced Real x values; whereas, a
Waveform trace would generate x values for time.
Table 4-2. Displays (Continued)
Display Description
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