Specifications

EAW Smaart 6 Operation Manual Analysis Modes and Display Types

Figure 3-13 SPL/Calibrations Options and Amplitude Calibration dialogs

5. The Set this value to field in the dialog should already be highlighted so all

you have to do is type in the correct value for the calibrator’s output level, typ-

ically 94, 104, or 114 dB (consult the calibrator documentation if necessary).

6. Click the OK button to apply the change and exit the dialog.

When the dialog box closes, all Spectrum mode displays automatically re-scale to the

new calibration offset and the Signal Level/SPL Readout now displays SPL. Smaart 6

now provides accurate SPL metering for Spectrum and Frequency Response measure-

ments, although Impulse Response mode always uses Full Scale calibration.

NOTE: Changing the gain of the microphone preamp, mixer channel, or the voltage

swing of the A/D converter requires recalibration. Also note that since Smaart

6 uses an “engineering units” calibration scheme, this procedure can calibrate

to virtually any signal of known amplitude.

SPL Calibration Without a Calibrator

If you do not have a microphone calibrator but do have a standard sound level meter

(SLM), you can calibrate Smaart 6 to provide relatively accurate SPL readings. The fol-

lowing simple procedure for “quick and dirty” SPL calibration takes only about a minute.

1. Click the Options/Units button above the SPL Readout to open the Amplitude

Calibration dialog and click the Calibrate Using Peak button. The Amplitude

Calibration dialog opens.

2. Set the Calibration Offset value to 1 dB, then click OK to set the change and

exit the dialog.