Interacoustics AC40 Service Manual

AC40 Service Manual Page 31
Calibration standard for Audiometer
Select “Standard” to select standard, options IEC or ANSI
Select “Calibration method”, to select the calibration method, options SPL mode or HL mode
SPL mode: The tab marked “standard” is default set to SPL (sound pressure level) so you don’t have to
take the standard for the transducer you are calibrating into account. For correction of your 6cc or 2cc
coupler/microphone you have to add or subtract from the 90dB SPL level which can be read on your sound
level meter
HL mode: If you select “HL” (hearing level) you can perform the calibration like on a regular audiometer
where you add the standard to the HL values and then the corrections for your coupler/microphone.
Figure 1

Interacoustics AC40 Specifications

General

Brand	Interacoustics
Model	AC40
Category	Measuring Instruments
Language	English