You are here: CX23-R web interface > Test configuration > Computed channels > Function Generator

Function Generator

The Function Generator computed channel generates an output channel that simulates the output of an analog function generator.

ClosedScreenshot

ClosedGeneric parameters

  • Name: Enter a name for the channel. The name must be unique and contain valid characters (invalid characters are single and double quotes, '\', '@', '#', '&', '<', '>').
  • Collect: If selected, the channel data is written to the SIE data file during a test run.
  • Description: Enter an optional detailed description of the computed channel.
  • Input channel: Set the desired input channel. In the edit dialog, the channel sample rate is displayed in Hz.
  • Measurand: Enter the quantity being measured or the type of measurement associated with the computed channel.
  • Units: Enter the physical units of measurement for the computed channel.
  • Range min and Range max: Enter the expected extreme values of the computed channel output.
  • Waveform: Set the shape of the output waveform to sine, ramp or square.
  • Duty cycle: For ramp and square type waveforms, specify the duty cycle in percent (1 to 99). Note that for a ramp waveform, a duty cycle of 99 results in a sawtooth wave, a duty cycle of 50 results in a triangle wave and a duty cycle of 1 results in a reverse sawtooth wave.
  • Period samples: Specify the number of samples that comprise one waveform cycle. Note that the waveform frequency is the input channel sample rate divided by the period samples.
  • Cycles: Specify the number of cycles to generate. After this number of cycles, the output remains constant at the last value of the last cycle.
  • Scale: Specify the amplitude of the waveform.
  • Offset: Specify the offset of the waveform.
  • Drift: Specify the offset drift for each cycle. The drift value is distributed over the cycle period for a uniform offset drift.
  • Decay: Specify the amplitude decay for each cycle. A decay value less than one results in decreasing amplitudes while a decay value greater than one results in increasing amplitudes. The decay value is distributed over the cycle period for a uniform decay.