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INSTRUCTION MANUAL

MT975

SOUND LEVEL METER

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Summary of Contents for MT975

Page 1: ...INSTRUCTION MANUAL MT975 SOUND LEVEL METER...

Page 2: ...and should be performed by a technician Periodically wipe the case with a dry cloth Do not use solvents or eradicator on this instrument Safety symbols Comply with EMC 2 FUNCTIONS DESCRIPTION This So...

Page 3: ...Hi 80dB 130dB Auto 30dB 130dB Frequency weighting A C Time weighting FAST 125ms SLOW 1s Microphone 1 2 inch electret condenser microphone Display 4 digits LCD display with a resolution of 0 1dB Displa...

Page 4: ...About 30hours Operation temperature and humidity 0 C 40 C 10 RH 90 RH Storage temperature and temperature 10 C 60 C 10 RH 75 RH Dimension 278 L x 76 W x 50 H mm Weight 350g Accessories Instruction ma...

Page 5: ...esponse SLOW Slow response dBA A Weighting responseto human sense dBC C Weighting response to machine monitor 30 130 Range indicate REC Recording data into computer AUTO Auto level range selection FUL...

Page 6: ...s deleted then it can power off 3 1 Adjusting DATALOGGER response Press the button continuously before power it on then press it will be displayed as following Press LEVEL button to adjust memory time...

Page 7: ...ill show the date as following Select the SETUP button for a second time the hour adjustment mode will be displayed Select LEVEL to save the adjustment Press the HOLD function to save the setup Press...

Page 8: ...p Press the SETUP button for a fifth time the month adjustment mode will be displayed Press LEVEL to make the adjustment press HOLD to save the setup Press the SETUP button for a sixth time the year a...

Page 9: ...isable auto power off that the USB data will start transmitting FAST SLOW button Time weighting selection FAST fast sampling measurement 1 time per 125mS SLOW slow sampling measurement 1 time per seco...

Page 10: ...that sequence Backlight button 8 0 Turn the backlight on off 8 1 DATALOGGER response setting Press the button continuously until INT symbol appears Press LEVEL to set up the data memory response and p...

Page 11: ...USB interface USB signal output is a 9600 bps serial interface AC DC signal output earphone outlet OUTPUT GROUND OUTPUT AC DC AC Output voltage 1Vrms equivalent to each range step Output impedance 100...

Page 12: ...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 calibrator switch and adjust the CALL potentio...

Page 13: ...Press the LEVEL button to select the desired level based on UNDER or OVER do not appear on the LCD Select dBA for general noise sound level and dBC or measuring sound level of acoustic material Selec...

Page 14: ...D drive 1 2 Run SETUP EXE installation program in file DISK1 install it to the referred directory 1 3 Install CP210X drive software Connecting the meter with the computer by USB interface install CP21...

Page 15: ...rt the application software connect the meter to the computer with the USB then search for the COMX port occupied by CP210X press button The symbol will not appear on the display this will indicate th...

Page 16: ...16 The computer reads the memory data in the meter when REC mode does not appear on the display and the connection is in order...

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