User`s guide

196 VEE User’s Guide
4 Analyzing and Displaying Test Data Chapter
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 1 5 Displays
Display Description