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Summary of Contents for Circuit-test DMS-4420
- Page 1 Main Electronic Supplies Ltd CIRCUIT-TEST DMS-4420 Sound Level Meter Datalogging...
- Page 2 CIRCUIT-TEST DMS-4420...
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Page 3: Table Of Contents
CIRCUIT-TEST DMS-4420 DMS-4420 Contents General Description & Specifications..1 Name and Functions........3 Calibration Procedures......6 Measurement Preparation......7 Operating precautions.......7 Measurement..........8 System requirements........9 User End Menu.........10... -
Page 4: General Description & Specifications
CIRCUIT-TEST DMS-4420 DMS-4420 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 5 CIRCUIT-TEST DMS-4420 DMS-4420 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. o. Power Life : About 50 hrs (Alkaline Battery).
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Page 6: Name And Functions
CIRCUIT-TEST DMS-4420 DMS-4420 2. NAME AND FUNCTIONS Windscreen Display HOLD button Frequency weighting select button Time weighting select button Maximum/Minimum hold button Backlight button Power button REC button USB Interface Connector RS-232 Interface Connector Microphone Battery Cover Windscreen If operating at wind speeds over 10m/sec, please put protective accessory windscreen in front of the microphone. - Page 7 CIRCUIT-TEST DMS-4420 DMS-4420 DATA HOLD button Readings shown on the LCD can be locked while pressing this button. Frequency Weighting select button A: A Weighting for general sound level measurements. C: C Weighting for checking the low-frequency content of noise.(If the C-Weighted...
- Page 8 CIRCUIT-TEST DMS-4420 DMS-4420 Backlight button Press this button to enable the backlight display for easy readings in dark environments. Press more than 1 second to disable backlight or wait and it will automatically turn OFF after 15 seconds. Power button Press key for 1sec to turn the sound level meter ON or OFF.
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Page 9: Calibration Procedures
CIRCUIT-TEST DMS-4420 DMS-4420 3. Calibration Procedures Using a standard Acoustic Calibrator (94dB, 1KHz 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 10: Measurement Preparation
CIRCUIT-TEST DMS-4420 DMS-4420 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. 4. MEASUREMENT PREPARATION 1. -
Page 11: Measurement
CIRCUIT-TEST DMS-4420 DMS-4420 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 12: System Requirements
CIRCUIT-TEST DMS-4420 DMS-4420 7. System requirements 1. The User End package contains Custom designed RS-232 cable USB cable 2. System Required Windows 2000, Windows XP 3. Minimum Hardware Required Pentium III 500MHZ PC compatible, or above 128MB RAM; At least 10MB hard disk space available to install User End program. -
Page 13: User End Menu
CIRCUIT-TEST DMS-4420 DMS-4420 8. User End Menu 1. Tool Bar Tool bar section has 6 buttons: [Connect To Meter] [Download All Records] [Erase All Records] [Update Meter Date/Time] [Save Records to File] [Print] Use button [Connect to meter] to connect meter to PC. - Page 14 CIRCUIT-TEST DMS-4420 DMS-4420 battery is taken out, the clock in the meter will stop. Use button [Save Records to File] to export the records from the list box to txt file. This button will be enabled after downloading records. Use button [Print] to print all the downloaded data.
- Page 15 CIRCUIT-TEST DMS-4420 DMS-4420...
- Page 16 CIRCUIT-TEST Division of RP Electronic Components Ltd. www.circuittest.com...
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