Macro: Avg

There are two distinct averagers, Waveform and Spectrum. The current display mode determines which averager will be activated via the toolbar Averager button ( ALT+A), and which control dialog will pop up in response to the thin button beneath it ( CTRL+A). Below that is a "sunken" box that shows the total frames acquired by the relevant averager.

Once an average has begun, the Averager button changes to 'Wave Avg' or 'Spect Avg' to show which averager is running. If you toggle to the opposite display mode with the Spectrum button ( ALT+S), the original averager continues to run, unaffected. This allows you to see the spectrum of a waveform average.

If the spectrum averager is running, toggling to the waveform display will show only the instantaneous waveform input for the spectrum averager; it does not show the inverse spectrum of the spectral average.

• Averager Total Frames Counter

• Waveform Averager Theory
  • Noise and Interference
  • Synchronous Waveform Averaging
  • Artifact Rejection Limits

• Waveform Averager Controls
  • Averager Toggle
  • Avg Add and Avg Sub
  • Linear
  • Exponential
  • Histogram
  • Post-Stimulus Time Histogram (PSTH)
  • Frames Request
  • Artifact Reject

• Spectrum Averager Theory

• Spectrum Averager Controls
  • Averager Toggle
  • Avg Add and Avg Sub
  • Linear
  • Exponential
  • Peak
  • Frames Request
  • Artifact Reject

Macro Notes:

Avg=1 starts a Waveform Average if the display is currently in waveform display mode. In Spectrum mode it starts a Spectrum Average. Avg=0 cancels the average, and Avg=x starts an average if none is running, or cancels a running average.

Caution: Be very careful with Avg=0 or Avg=x. If a running average is cancelled, the averaged data is lost and the display reverts to live data. Use Pause=1 to Pause a running average, and Pause=0 to resume the average.

WaitAvg or WaitPause Event Wait Macros may be used to suspend macro processing until an average is done, so the results are available to be saved or otherwise processed.

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