The first stage of measuring the soundcard is to use a 1kHz tone to set the levels of the measurement signal and the soundcard input. The tone is generated at the current Sweep Level setting, it is best to use a fairly high level for soundcard measurement, between -12 and -6 dBFS. Set this level now using the Sweep Level control above, the original sweep level setting will be restored at the end.

If the REW volume controls are available and enabled set Wave Volume to 1.0 (full volume), Output Volume should be around 0.5 if it affects the signal level. If REW volume controls are not available or not being used set the levels via the controls in your soundcard's mixer or your OS audio control panel.

Press Next when the Sweep Level, Wave Volume and Output Volume have been set or Cancel to quit.