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Summary of Contents for Circuit-test DMS-4400
- Page 1 CIRCUIT-TEST DMS-4400 DMS-4400 SOUND LEVEL METER...
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Page 2: Table Of Contents
DMS-4400 DMS-4400 Contents 1. General Description & Specifications .... 1 2. Name and Functions ........3 3. Calibration Procedures ........6 4. Measurement Preparation ......7 5. Operating Precautions ........7 6. Measurement ..........8... -
Page 3: General Description & Specifications
DMS-4400 To ensure proper use of this Sound Level Meter, we recommend that you read and follow this manual carefully. This unit conforms to the IEC61672 Type2, ANSI S1.4 Type2 for Sound Level Meters. This Sound Level Meter has been designed to meet the... - Page 4 DMS-4400 k. MAX/MIN:Hold readings for the Maximum and Minimum value. DATA HOLD:The reading data shown on LCD can be locked while pressing the button m. Low Battery Indication: Replace battery as LCD display “ ”. n. Power Supply:9V NEDA 1604, IEC 6F22, JIS 006P battery×1pcs.
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Page 5: Name And Functions
DMS-4400 2. NAME AND FUNCTIONS 1. Windscreen 2. Display 3. DATA HOLD button 4. Frequency weighting select button 5. Time weighting select button 6. Maximum/Minimum hold button 7. Backlight button 8. Power button 9. Microphone 10. Battery Cover Tripod socket... - Page 6 DMS-4400 Display a. Low battery indicator b. DATA HOLD indicator c. Maximum indicator d. Minimum indicator e. A-Weighting f. C-Weighting g. Slow response h. Fast response i. Sound level read out DATA HOLD button Readings shown on the LCD can be locked while pressing this button.
- Page 7 DMS-4400 MAX/MIN hold button Press the key to activate the function. The “MAX” symbol appears on the display and the instrument will show the Maximum value measured and will automatically update itself when a greater value is measured. Press the key again and the “MIN” symbol...
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Page 8: Calibration Procedures
DMS-4400 3. CALIBRATION PROCEDURES Using a standard Acoustic Calibrator (94dB, 1 KHz Sine wave) Acoustic calibrator Sound level meter 1. Make the button settings display: dBA Time weighting: FAST 2. Insert the Microphone nozzle carefully into the insertion hole of the calibrator. -
Page 9: Measurement Preparation
DMS-4400 4. When the LCD stops blinking, release the A/C and the HOLD buttons. The sound level meter will display 94.0 dBA when the calibration is done. 5. The 94 dB calibration process can be repeated until the meter reads 94.0 dB. Recalibration cycle: 1 year. -
Page 10: Measurement
DMS-4400 6. MEASUREMENT 1. Open battery cover and install a 9 Volt battery in battery compartment. 2. Turn on power and select the desired response time and weighting. If the sound source consists of short bursts or only catching sound peak, set response to FAST. - Page 11 CIRCUIT-TEST Division of RP Electronic Components Ltd. www.circuittest.com...