Positioning the client, Positioning the probe tube, Max tm spl setup – Audioscan Axiom User Manual

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Axiom

®

User's Guide Version 1.8

May 2015

4. Click on the [Start test] bar (which changes to [Stop test]).

5. Hold the probe module about 18 in. (0.5 m) in front of the sound-field speaker.

6. Hold the microphone of a calibrated sound level meter next to the on-ear reference microphone as shown.

Set the sound level meter to C weighting and slow.

7. The sound level meter should read 70 +/- 2 dB.

8. Repeat with the frequency at 250 Hz.

9. To stop the measurement, click on [Stop test].

The probe module should be replaced if it fails this test.

Max TM SPL setup

The Max TM SPL safety feature allows you to set a limit on the SPL, measured by the probe microphone, above

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