Calibration Of Hit Reference Microphone - audioscan RM500SL User Manual

7.9

Calibration of HIT reference microphone

Remove any coupler from the coupler microphone before calibration.
1) Position the HIT reference microphone opening concentric with the coupler
microphone opening and about 1 – 2 mm from as shown below.
2) Close and seal the test chamber by tightening the latch at the front of the lid.
3) Press <Tests>, then highlight and <PICK> [Calibrate] from the Hearing
Instruments Test column.
4) Highlight, then <PICK> [Daily] or [Weekly] to select the calibration interval.
5) Highlight and <PICK> [Calibrate].
It is recommended that you print a copy of the initial calibration curve and compare
it with your daily or weekly curve. Any change in this curve indicates a drift in
either the coupler or the reference microphone which needs further investigation.
See 7.10: Calibration check for coupler microphone
FastFacts 7.9: Calibration of HIT reference microphone
0611
See 7.8: HIT calibration facts
RM500SL User's Guide Version 2.8
for an additional check.
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