HP RM500SL Uživatelský manuál stáhnout pdf (Strana 34)

0611 RM500SL User’s Guide Version 2.8 Page 34

7.9 Calibration of HIT reference microphone

FastFacts 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]. See 7.8: HIT calibration facts

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 for an additional check.

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HP RM500SL Uživatelský manuál Strana 34