Noise - additional settings

In addition to the base channel and signal settings, the Noise waveform type offers a Filter selection. Select between the filter types:

FG_OutputChannelSetup_SetupW_Noise

  • None - no filter is used, the output signal is white noise
  • Pink - a filter is used to obtain pink noise
  • Low pass

FG_OutputChannelSetup_SetupW_Noise_LowPass

Define a low pass filter:

  • Order (1 to 10)
  • Prototype (Butterworth, Chebysev or Bessel)
  • FHigh (Hz) - high frequency can be set

  • Band pass

FG_OutputChannelSetup_SetupW_Noise_BandPass

Define a band pass filter:

  • Order (1 to 10)
  • Prototype (Butterworth, Chebysev or Bessel)
  • High- FHigh(Hz) and low frequency - Flow(Hz) can be set

Order and Prototype can be selected from the drop-down list:

FG_OutputChannelSetup_SetupW_Noise_Order

FG_OutputChannelSetup_SetupW_Noise_Prototype

NOTE: For information about Order and Prototype see ->IIR Standard filter.

For noise excitation, it is common to define the upper and lower frequency limit. The lower limit prevents DC excitation and upper limit prevents too high-frequency noise which is higher than the bandwidth of the measurement.