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Table Of Contents
146 Chapter 13 Utility
Test Oscillator
The Test Oscillator generates a static frequency or a sine sweep. The latter is a user-
defined frequency spectrum tone sweep.
Test Oscillator Parameters
 Waveform buttons: Select the type of waveform to be used for test tone generation.
 The Square Wave and Needle Pulse waveforms are available as either aliased or
anti aliased versions. The latter when used in conjunction with the Anti Aliased
button.
 Needle Pulse is a single needle impulse waveform.
 If the Sine Sweep button is active, the fixed oscillator settings in the Waveform
section above are disabled.
 Frequency: Determines the frequency of the oscillator (default is 1 kHz).
 Level: Determines the overall output level of the Test Oscillator.
 Sine Sweep button: Activate to generate a user-defined frequency spectrum sine wave
sweep.
 Time field: Determines the duration of the sweep.
 Start Freq and End Freq fields: Define the oscillator frequency at the beginning and
end of the sine sweep.
 Sweep Mode (extended parameter): Choose either a Linear or Logarithmic sweep
curve.
 Trigger button: Click to trigger the sine sweep. The behavior of the Trigger button can
be switched via the menu below:
 Single: Clicking the Trigger button triggers the sweep once.
 Continuous: Clicking the Trigger button triggers the sweep indefinitely.