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Model
SD-4023
Sound Level Meter/
Data logger
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Instruction
Manual
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INSTRUMENTS
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Table of Contents
Features ......................................................................................... 3
Specifications .............................................................................4-5
Instrument Description .................................................................. 6
Operating Instructions ..............................................................7-11
Function Selection ...................................................................... 7
Data Hold ................................................................................... 7
Data Record (Max., Min. reading) ................................................ 8
Backlight ON/OFF ....................................................................... 8
Datalogger ...............................................................................8-9
Auto Datalogger .......................................................................... 9
Manual Datalogger .................................................................9-10
Checking the Time .................................................................... 10
Check Sampling Time Information ............................................. 10
SD Card Data Structure ............................................................ 10
Data Transfer from SD card to Computer .................................. 11
Advanced Settings .................................................................11-13
PC Serial Interface ....................................................................... 14
System Reset .............................................................................. 15
Battery Replacement ................................................................... 15
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Features
• Measures sound levels in accordance with IEC61672 Class 2 specifications
• A/C frequency weighting
• Fast/Slow time weighting
• Peak hold, Data hold and Max/Min record
• Easy to read LCD with backlight
• Real time data logger with integral 4GB SD memory card
(OPTIONAL)
• Just plug the SD card into the computer and it downloads directly to
EXCEL
• RS232 and USB computer interface
• Easy to read LCD with backlight
• Auto or manual power off
• Includes Batteries
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Pantone 534 Blue - 100/80/30/5
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Specifications
Measuring Range:
Resolution:
Accuracy:
Frequency Weighting:
Time Weighting:
Frequency Range:
Auto Sampling Time:
Memory Card:
Data Output:
AC Output:
Output Impedance:
Power Supply:
Dimensions:
Weight:
Optional Accessories:
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30 to 130 dB
0.1 dB
31.5Hz ± 3.5 dB; 63 Hz ± 2.5 dB;
125 Hz ± 2.0 dB; 250 Hz ± 1.9 dB;
500 Hz ± 1.9 dB; 1 kHz ± 1.4 dB;
2 kHz ± 2.6 dB; 4 kHz ± 3.6 dB;
8 kHz ± 5.6 dB
A: Human Ear Listening; C: FLAT Response
Fast: 200ms; Slow: 500ms
31.5 to 8,000Hz
1, 2, 5, 10, 30, 60, 120, 300, 600, 1800,
3600 seconds
SD memory card, 1 GB to 16 GB
USB/RS232 PC computer interface
0.5Vrms corresponding to each range step
600Ω
6 x 1.5V UM3/AA batteries
Meter: 245 x 68 x 45mm (9.65 x 2.68 x 1.77”);
Microphone: 12.7mm (0.5”) dia.
489g (1.08 lb)
4G SD Card (SD-4GB)
Sound calibrator (R8090)
Wind shield ball (SB-01)
USB cable (USB-01)
Power adapter (AP-9VA-110V)
Data Acquisition Software (SW-U801-WIN)
Soft carrying case (CA-05A)
Tripod (BS-6)
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Frequency Hz
31.5
63
125
250
500
1K
2K
4K
8K
A Weighting
-39.4 dB
-26.2 dB
-16.1 dB
-8.6 dB
-3.2 dB
0 dB
1.2 dB
1 dB
-1.1 dB
C Weighting
-3 dB
-0.8 dB
-0.2 dB
0 dB
0 dB
0 dB
-0.2 dB
-0.8 dB
-3 dB
Fast Time Weighting Max Response: -1.0 dB
Fast Time Weighting Tolerance: +1 dB/ -2 dB
Slow Time Weighting Max Response: -4.1 dB
Slow Time Weighting Tolerance: ±2 dB
Tolerance
±3.5 dB
±2.5 dB
±2.0 dB
±1.9 dB
±1.9 dB
±1.4 dB
±2.6 dB
±3.6 dB
±5.6 dB
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Instrument Description
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1. Display
2. Power, ESC, & Backlight Button
3. Hold & Next Button
4. REC & Enter Button
5. Range, Up, & Time Check
Button
6. A/C, Down, & Sampling Time
Check Button
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9. Microphone
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10. AC Output
11. Calibration VR
12. USB/RS232 Output
13. AC/DC 9V Power Adapter Input
Socket
14. Tripod Fix Nut
15. Battery Cover Screws
16. Stand
17. Battery compartment/Cover
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Operating Instructions
Turn the meter on by pressing the Power button. Press and hold the
Power button to turn the meter off.
Function Selection
1. The meter’s function defaults are set to “Auto Range, “A Frequency Weighting”, and Fast Time Weighting”. The screen will display
“A. Fast Auto”.
2. Switch between “A” or “C” Frequency Weighting by pressing the
“A/C Button”.
3. Determine proper measuring range by pressing the Range Button.
Press the Range Button to scroll through the Four range types.
There are three manual ranges (range 1, range 2, range 3) and auto range in this sequence:
Range 1:
30 - 80 dB range
Range 2:
50 - 100 dB range
Range 3:
80 - 130 dB range
4. Select the Time Weighting (Fast or Slow) by pressing the Time
Weighting Button. The screen will display either “FAST” or
“SLOW”, depending on your selection.
Data Hold
While taking a measurement, press the Hold Button once and the measured value will hold on the screen, and a HOLD symbol will appear.
Press the Hold Button once again will release the data hold function.
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Data Record (Max., Min. reading)
The data record function records the maximum and minimum readings.
Press the REC Button once to start the Data Record function and a “REC” symbol will appear on the display. With the “REC” symbol on the display:
1. Press the REC Button once, and a ”REC. MAX.” symbol along with the maximum value will appear on the display. To delete the maximum value, press the Hold Button once and the display will show a “REC.” symbol only and execute the memory function continuously.
2. Press the REC Button again, and a “REC. MIN.” symbol along with the minimum value will appear on the display. To delete the minimum value, press the Hold Button once, and the display will show a “REC.” symbol only and execute the memory function continuously.
3. To exit the memory record function, press the REC button for 2 seconds. The display will revert to the current reading.
Backlight ON/OFF
After powering the meter ON, the LCD Backlight will turn on automatically. While taking measurements, press the Backlight Button and the LCD
Backlight will turn off. Press the Backlight Button once again to turn the
LCD Backlight back ON.
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Datalogger
Preparation Before Executing the Datalogger Function:
1. Insert the optional SD card into the SD card socket.
2. Before you use an SD card with this meter for the first time, it is recommend to format the SD card. See Advanced Settings section of this manual for instructions.
3. If this is the first time the meter is used you need to adjust the clock. See Advanced Settings section of this manual for instructions.
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4. Now you need to set the decimal format. The numerical data structure downloaded to the SD card is defaulted used the “.” as the decimal, for example “20.6” “1000.53”. But in certain countries the “,” is used as the decimal point, for example
“20, 6” “1000,53”. See Advanced Settings section of this manual for instructions on how to change the Decimal Character.
Auto Datalogger (Set sampling time ≥1 second)
1. Start Datalogging; press the REC Button, and the “REC” symbol will appear on the LCD screen, then press the Logger Button, the
“REC” symbol will flash while the measuring data and time information is being saved in memory. To set the sampling time, and to toggle the beeper sound on or off, refer to the Advanced Settings section of this manual.
2. Pause the Datalogging; while Datalogging, if press the Logger
Button once. While paused, the “REC” symbol will stop flashing.
Press the Logger Button again to resume Datalogging, and the
“REC” symbol will begin to flash again.
3. Stop Datalogging; while the Datalogger function is paused, press the REC Button for 2 seconds. The “REC” symbol will disappear indicating the Datalogging function has stopped.
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Manual Datalogger (Set sampling time = 0 seconds)
1. Set sampling time is to 0 second; Press the REC Button, and the
“REC” symbol will appear on the LCD screen. Press the Logger
Button, and the “REC” symbol will flash once and one Beep will sound, at the same time the measuring data along the time information will be saved in memory. The lower Display will show the
Position (record) number, which is saved as well.
2. To Change the Position Number; press the Down Button and the lower position number will flash on the display. Press the Up or
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3. Stop Datalogging; press the REC Button for 2 seconds, and the
“REC” symbol will disappear indicating the Datalogging function has stopped.
Checking the Time
During normal functions (not Datalogging), press the Time Check Button and the lower LCD display will show the Year, Month/Date, Hour/Minute.
Check Sampling Time Information
During normal functions (not Datalogging), press the Sampling Button and the lower LCD display will show the Sampling Time Information.
SD Card Data Structure
1. The first time the SD card is used in the meter, the SD card will generate a folder: “SLA01”.
2. The first time you use the Datalogger, in the folder “SLA01”, a new file name “SLA01001.xls” will be created. The Datalogger will use this file until the Data has reached to 30,000 rows. The meter will then will generate a new file with a subsequent number, for example “SLA01002.xls”.
3. The folder SLA01 can hold “99.xls” files. When that number has been reached, the meter will then will generate a new folder with a subsequent number, for example “SLA02”. Max number of
“SLA--” folders is 10.
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Data Transfer from SD card to Computer (EXCEL Software)
1. After Datalogging, remove the SD card from the SD card slot.
2. Plug in the SD card into the Computer’s SD card slot or insert the
SD card into the optional SD card adapter and connect to your
Computer. Turn your computer on and a folder will appear on your desktop representing you SD card.
3. Open “Microsoft EXCEL”. Download the EXCEL files from the SD
Card to the computer by opening up the SD folder and selecting the desired EXCEL files, and drag-and-drop them onto your
Computer. Open the files with EXCEL (File – Open).
4. The EXCEL file will have the following column headers in this order: Place (Position Number), Date (Year/Month/Day), Time (in
24h clock), Value, and Unit.
Advanced Settings
During normal functions (not Datalogging), press and hold the SET Button for 2 seconds to enter the “Advanced Setting” mode. Press the Next Button scroll through eight main functions, shown on the lower display:
dAtE Set clock time (Year/Month/Date, Hour/Minute/Second)
dEC Set SD card Decimal character
PoFF Auto power OFF management
bEEP Set beeper sound ON/OFF
SP-t Set sampling time (Hour/Minute/Second)
Sd F SD memory card Format
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While in the “Advanced Setting” function, press the Esc Button to exit and to return to normal functioning.
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Set Clock Time
1. When the lower display shows “dAtE”, press the Enter Button.
Use the Up and Down Buttons to adjust the Year. After the desired value is set, press the Enter Button to adjust the Month, Date,
Hour, Minute, and Second values.
2. After all the time values have been set the screen will jump to “SD card Decimal character” setting screen.
Note: After the time value is set, the internal clock will run even when the power is off, if the battery is under normal conditions.
Setting the Decimal Point on the SD Card
1. When the lower display shows “dEC”, use the Up or Down Buttons to toggle between “bASIC” (“.” Decimal Point) or “Euro” (“,”
Decimal Point).
2. After the Decimal point character has been selected, press the
Enter Button to save the setting as the default.
Auto Power OFF Management
1. When the lower display shows “PoFF”, use the Up or Down Buttons to select the value “yES” (Enable Auto Power Off) or “no”
(Disable Auto Power Off.
2. After selecting “yES” or “no”, press the Enter Button to save the setting as the default.
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Set Beeper Sound ON/OFF
1. When the lower display shows “bEEP”, use the Up or Down Buttons to select “yES” (Beeper Sound is ON) or “no” (Beeper Sound is OFF).
2. After selecting “yES” or “no”, press the Enter Button to save the
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Set Sampling Time
1. When the lower display shows “SP-t”, use the Up or Down Buttons to adjust the value to either 0, 1, 2, 5, 10, 30,60, 120, 300,
600, 1800, or 3600 seconds.
2. After the Sampling value is selected, press the press the Enter
Button to save the setting as the default.
SD Memory Card Format
Please Note: Formatting the SD card erases all data from that SD card.
1. When the lower display shows “Sd F”, use the Up or Down Buttons to select “yES” (format the SD card) or “no” (do not format the SD card).
2. To format your SD card, select “yES” and press the Enter Button.
The Display will show “yES Enter”, to confirm. Press the Enter
Button to confirm.
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PC Serial Interface
The instrument features an PC output via 3.5 mm terminal. The connector output is a 16 digit data stream which can be utilized to the user’s specific application. An USB RS232 lead with the following connection will be required to link the instrument with the PC serial input.
Meter (3.5mm Jack Plug) PC (9W “D” Connector)
Center Pin Pin 2
Ground/Shield Pin 5
The 16 digit data stream will be displayed in the following format:
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
D10
D11
D12
D13
D14
D15
D0 End Word
D1 to D4 Upper Display reading, D1= LSD, D4= MSB
D5 to D8 D5=? D6=? D7=? D8=?
D9 Decimal Point ( DP) for display
0 = No DP, 1 = 1 DP, 2 = 2 DP, 3 = 3 DP
D10 = 0
D11 = 0
D12 = 0
D13 = 0
D14 = 0
Start Word
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System Reset
If an error occurs, press the Reset Button with a Pin. If the Reset Button does not fix the error, please send in the unit to our Calibration Lab for repair. E-mail [email protected] for more information.
Battery Replacement
1. When the left corner of LCD display shows , it is necessary to replace the battery
2. Loosen the screws of the Battery Cover and remove
3. Remove the batteries and replace with six DC 1.5 V batteries
(UM3, AA, Alkaline/heavy duty)
4. Make sure the battery cover is properly secured after changing the battery
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Notes _________________________________________
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