HP RM500SL manual FastFacts 7.9 Calibration of HIT reference microphone

7.9Calibration 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.

FastFacts 7.9: Calibration of HIT reference microphone

0611 RM500SL User’s Guide Version 2.8 Page 34