AC: Output voltage: 1Vrms corresponding to each range
step.
Output impedance: 100Ω
DC: Output voltage: 10mV/dB
Output impedance: 1kΩ
6. CALIBRATION PROCEDURES
① Make the following switch settings:
Frequency weighting: A-weighting
Time weighting: FAST
Level range: 50 ~100dB
② Insert the microphone housing carefully into the 1/2
inch insertion hole of the calibrator（94dB @ 1kHZ）.
③ Turn on the switch of calibrator and adjust the CALL
potentiometer of the unit 94.0dB is displayed.
NOTE: All products are well calibrated before shipment.
Recommended recalibration cycle: 1 year.
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