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CIRCUIT-TEST

DMS-4420

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. REC response

Sound level readout

Windscreen

Display

HOLD button

Frequency weighting select

button

Time weighting select button

Maximum/Minimum hold

button

Backlight button

Power button

REC button

10.

RS-232 Interface Connector

11.

Microphone

12.

Battery Cover

2. NAME AND FUNCTIONS

1. Windscreen

If operating at wind speeds over 10m/sec, please

put protective accessory windscreen in front of the

microphone.

2. Display

USB Interface Connector

Содержание DMS-4420

Страница 1: ...DMS 4420 Sound Level Meter Datalogging CIRCUIT TEST ...

Страница 2: ...CIRCUIT TEST DMS 4420 ...

Страница 3: ... DMS 4420 1 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 7 System requirements 9 8 User End Menu 10 ...

Страница 4: ... between 31 5HZand 8 KHZ Display with 0 1dB steps on a 4 digits LCD With two equivalent weighted sound pressure levels A and C 1 GENERAL DESCRIPTION SPECIFICATIONS a Display 4 digits LCD with maximum minimum Resolution 0 1dB Display Update 0 5 sec b Standard applied IEC651 Type2 ANSI1 4 Type2 c Frequency range 31 5Hz 8KHz d Measuring level range A Weighting 30 130dB C Weighting 35 130dB e Frequenc...

Страница 5: ... Supply 9V NEDA 1604 IEC 6F22 JIS 006P battery 1pcs o Power Life About 50 hrs Alkaline Battery p Operating Altitude Up to 2000M q Operating temperature Humidity 5 C 40 C below 80 RH r Storage Temperature Humidity 10 C 60 C below 70 RH s Dimension 200mm L x55mm W x38mm H t Weight About 170g Including batteries u Accessories Instruction manual carrying case 9V Battery windscreen ...

Страница 6: ... Windscreen 2 Display 3 HOLD button 4 Frequency weighting select button 5 Time weighting select button 6 Maximum Minimum hold button 7 Backlight button 8 Power button 9 REC button 10 RS 232 Interface Connector 11 Microphone 12 Battery Cover 2 NAME AND FUNCTIONS 1 Windscreen If operating at wind speeds over 10m sec please put protective accessory windscreen in front of the microphone 2 Display USB ...

Страница 7: ...for normal measurements SLOW for checking average level of fluctuation noise 6 MAX MIN hold button 6 1 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 6 2 Press the key again and the MIN symbol appears on the display and the instrument will show...

Страница 8: ...e sound level meter ON or OFF The auto power will be off automatically after 5 minutes idle time 9 REC button Press the button to start recording data and press REC again to stop recording The minimal interval is 1 second and the maximum interval time is 7 Hours 59 Minutes 59 Seconds Total Records 14 000 10 RS 232 Interface Connector RS 232 interface with a computer 11 Microphone 1 2 inch Electret...

Страница 9: ...tings display dBA Time weighting FAST 2 Insert the Microphone nozzle carefully into the insertion hole of the calibrator 3 Press the A C and the HOLD button simultaneously for more than 1 second and the LCD will start blinking to confirm calibration 4 When the LCD stops blinking release the A C and Acoustic calibrator Sound level meter ...

Страница 10: ... indicated that the battery needs to be replaced 5 OPERATING PRECAUTIONS 1 Air blowing across the microphone can cause noise and interference when using the instrument in windy environments use the windscreen to reduce noise 2 Calibrate the instrument before operation if the instrument was not in use for a long time or operation at bad environment 3 Do not store or operate the instrument in a high...

Страница 11: ...ral noise sound level and C weighting for measuring sound level of acoustic material 3 Hold the instrument comfortably in hand or fix on tripod and point the microphone at the suspected noise source the sound pressure level will be displayed 4 When MAX MIN maximum minimum hold mode is chosen The instrument captures and holds the maximum or minimum noise level Press once to select MAX value Press a...

Страница 12: ...ains Custom designed RS 232 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 Recommended display resolution is 800X600 or above USB cable ...

Страница 13: ...ecords to File Print Use button Connect to meter to connect meter to PC This step is the first step before running the software Use button Download All Records to download records from Meter to Local computer Use button Erase All Records to erase all the records saved in memory Use button Update Meter Date Time to synchronize the time in meter with the computer Remember if the ...

Страница 14: ...me Data Real time data section is used to display real time data including DB value dba dbc status fast slow status hold rec max min status Current meter situation including total group and total records in the memory interval meter date and time are also displayed at the left side 3 Group information Data The Group information data section is used to display selected group information including s...

Страница 15: ...CIRCUIT TEST DMS 4420 DMS 4420 13 ...

Страница 16: ...CIRCUIT TEST Division of RP Electronic Components Ltd www circuittest com ...

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