AC40 Service Manual Page 55
Select “Transducer calibration”
Place the transducer on the 2cc IEC60318-5 (IEC126)coupler (Figure 27)
Figure 27
Adjust the “Adjustment” slider until the calibration level is obtained on the measurement amplifier
(i.e. 90 dB SPL) (Figure 28)
Figure 28
Note: Remember to add or subtract the correction for your microphone
Check the frequency accuracy with a frequency counter. The accuracy has to be better than ±1%
Press “Next”, when the calibration level is obtained, to get the next frequency
Repeat “Next” until all stimuli is calibrated.
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