13
Operating Instruction for
Sound
Level
Meter
7. Calibration Procedures
1.Make the following switch settings:
• Frequency Weighting: A-Weighting
• Time Weighting: FAST
• Level Range: 50 to 100dB
2.Insert the microphone housing carefully into the 1/2 inch insertion hole of the calibrator (94dB at 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.
Содержание ET2146
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