Aktakom ATE-9051 Manual do Utilizador descarregar pdf (Página 16)

⒂ Calibration potentiometer（CALL）

For external standard level calibration adjustments.

Tripod mounting screw

Battery cover

Microphone

1/2 inch Electret Condenser microphone

5. CALIBRATION PROCEDURES

①Make the following switch settings:

Frequency weighting: A-weighting

Time weighting: FAST

Level range: 50 ~100dB

②Insert the microphone housing carefully into the

1/2 inch insertion hole of the calibrator（94dB @

1KHZ）.

③Turn on the switch of calibrator and adjust the

CALL potentiometer of the unit 94.0dB is

displayed.

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