11
Sound Level Meter User Manual
15-Calibration potentiometer(CALL)
For external standard level calibration adjustments. •
16-Tripod mounting screw
17-Battery cover
18-Microphone
1/2 inch Electret Condenser microphone •
5-Calibration Procedures
• Make the following switch settings:
Frequency weighting: A-weighting•
Time weighting: FAST•
Level range: 50~100dB•
• Insert the microphone housing carefully into the 1/2 inch insertion hole of the calibrator(94dB@1kHZ)
• 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.•
MAX/MIN
REC
A/C
SETUP LEVEL
F/S
HOLE
Acoustic Calibrator
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