Major tech MT975 Instruction Manual - Page 12
Browse online or download pdf Instruction Manual for Measuring Instruments Major tech MT975. Major tech MT975 16 pages. Sound level meter
Print Page⒃ Tripod mounting screw
⒄ Battery cover
⒅ Microphone
1/2 inch Electret Condenser microphone
①
5.
CALIBRATION PROCEDURES
Make the following switch settings:
Frequency weighting:
Time weighting:
Level range:
② Insert the microphone housing carefully into the 1/2
inch insertion hole of the calibrator（94dB @ 1kHZ）.
③ Turn on the calibrator switch 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.
Acoustic Calibrator
REC
FAST
A/C
12
A-weighting
FAST
50 ~100dB