Related Manuals for Galaxy Audio Check-Mate CM-140
Summary of Contents for Galaxy Audio Check-Mate CM-140
- Page 1 CM-140 Instruction Manual G A L A X Y A U D I O G A L A X Y A U D I O GCBC CM140-12000...
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Page 2: Table Of Contents
CONTENTS TITLE PAGE Safety Information………………………….. 1 General Description.…………………...…1-2 III. Specifications……………..……………… 2-3 IV. Name and Functions…………………….. 4-5 Calibration Procedures………..………... 6-7 VI. Measurement Preparation……..……….… 7 VII. Operating Precautions………..…………. 7-8 VIII. Measurement………………………………... 8... -
Page 3: Safety Information
CM-140 SPL METER I. Safety Information Read the following safety information carefully before attempting to operate or service the meter. Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired. Ø Environment Conditions Œ... -
Page 4: Specifications
CM-140 SPL METER Display with 0.1dB steps on a 4-digit LCD. Two equivalent weighted sound pressure levels, A and AC signal output is available from standard 3.5mm coaxial socket suitable for a frequency analyzer, level recorder, FFT analyzer, graphic recorder, etc. III. - Page 5 CM-140 SPL METER AC Output: 1 Vrms at FS (full scale). Output impedance: Approx. 100 Ohms FS: means the upper limit of each level range. Electromagnetic Compatibility: RF field = 3V/m Total accuracy = specified accuracy + 0.5dB Power Supply: One 9V battery, 006P or IEC 6F22 or NEDA 1604.
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Page 6: Name And Functions
CM-140 SPL METER IV. Name And Functions Windscreen If you operate at wind speed over 10m/sec, please put protective accessories in front of the microphone. ‚ Display Minmum indication Fast response Maximum indication Slow response Low battery indication Sound Level readout A-Weighting C-Weighting Under range... - Page 7 CM-140 SPL METER ƒ Power Button The ¡ key turns the sound level meter ON or OFF. „ MAX / MIN Hold button Press button to enter the maximum and minimum recording mode. Select the proper level range before using MAX/MIN to ensure that reading value will not exceed the measurement range.
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Page 8: Calibration Procedures
CM-140 SPL METER ‰ AC Output Terminal 1 Vrms Corresponding to each range step. Output impedance: 100 ohms Output signal by standard 3.5mm coaxial socket signal on pin. Signal Ground Š CAL Potentiometer Calibration control, for level calibration adjustment. Battery Cover V. -
Page 9: Measurement Preparation
CM-140 SPL METER (1) Make the following switch settings. Display: dBA Time Weighting: FAST Measurement Mode: MAX/MIN Mode function disable. Level Range: 50 to 100dB (2) Insert the microphone housing carefully into the insertion hole of the calibrator. (3) Turn on the switch of calibrator and adjust the CAL potentiometer of the unit. -
Page 10: Measurement
CM-140 SPL METER (3) Do not store or operate the instrument at a high temperature or in a high humidity environment. (4) Keep microphone dry and avoid severe vibration. (5) Take out the battery and keep the instrument in a low VIII. - Page 11 CM-140 SPL METER...
- Page 12 G A L A X Y A U D I O G A L A X Y A U D I O 601 E. Pawnee Wichita, KS 67211 316.263.2852 FAX 316.263.0642 www.galaxyaudio.com...