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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