Reed Instruments SD-4023 User manual

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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Model
Instruction
Manual
SD-4023
Sound Level Meter/
Datalogger

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2
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Table of Contents
Features............................................................................................ 3
Specications................................................................................3-5
Instrument Description ..................................................................... 6
Operating Instructions.................................................................7-11
Function selection.......................................................................... 7
Data Hold ...................................................................................... 7
Data Record (Max., Min. reading)................................................7-8
Backlight ON/OFF.......................................................................... 8
Datalogger..................................................................................... 8
Auto Datalogger............................................................................. 9
Manual Datalogger......................................................................... 9
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
Set Clock Time ............................................................................ 12
Setting the Decimal point on the SD Card.................................... 12
Auto power OFF management..................................................... 12
Set Beeper Sound ON/OFF ......................................................... 13
Set sampling time ........................................................................ 13
SD memory card Format ............................................................. 13
PC Serial Interface.......................................................................... 14
System Reset ................................................................................. 15
Battery Replacement...................................................................... 15

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3
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Features
• Designed to meet IEC 61672 Class 2
• Time weighting (fast & slow) dynamic characteristic modes
• Auto & Manual range
• Hold and Peak functions
• Heavy duty compact carrying case
• Real time SD memory card datalogger with a built-in clock and
calendar
• Sampling time set from 1 second to 3600 seconds
• Meter can switch to a Manual Datalogging
• No extra software needed, just plug the SD card into the computer
and it downloads directly to EXCEL
• SD card capacity: 1 GB to 16 GB
• Easy to read LCD with backlight
• Auto power off or manual power off
• Data hold, record max. and min. reading
• High accuracy microcomputer circuit
• Power by UM3/AA (1.5 V) x 6 batteries
• USB/RS232 Computer interface
Specifications
Circuit: Custom microprocessor LSI circuit
Display: 52mm x 38mm LCD with backlight
Frequency Weighting: A: Human Ear Listening; C: FLAT Response
Time Weighting: Fast - 200ms, Slow - 500ms
Auto Range: 30 - 130dB
Manual Range: 30 - 80dB, 50 - 100dB, 80 - 130dB
Frequency: 31.5 - 8,000Hz
Microphone: Electric Condenser Microphone

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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Auto Sampling Time: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800,
3600 seconds
Memory Card: SD memory card, 1 GB to 16 GB
Sampling Time: Approx. 1 second
Data Output: USB/RS232 PC computer interface
AC Output: AC 0.5 Vrms corresponding to each range step
Output Impedane: 600ohm
Measurement range: 30 - 130dB
Resolution: 0.1dB
Accuracy under 94dB input signal:
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 K Hz ± 1.4 dB,
2 K Hz ± 2.6 dB, 4 K Hz ± 3.6 dB,
8 K Hz ± 5.6 dB,
Operating Temperature: 0-50°C (0-122°F)
Operating Humidity: Less than 85% R.H.
Power Supply: UM3/AA (1.5 V)
Weight: 489g/1.08lb
Dimensions: Main instrument: 245 x 68 x 45mm;
Microphone: 12.7mm (0.5”) Dia.
Optional accessories: 2G SD Card (SD-2GB)
Sound calibrator (SC-05)
Wind shield ball (SB-01)
USB cable (USB-01)
RS232 cable (UPCB-01)
Data Acquisition Software (SW-U801-WIN)
Soft carrying case (CA-05A)
Tripod (BS-6)
Visit us at www.reedinstruments.com for more information on our optional
accessories, or e-mail us at [email protected] continued...

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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Frequency Hz A Weighting C Weighting Tolerance
31.5 -39.4dB -3dB ±3.5db
63 -26.2dB -0.8dB ±2.5dB
125 -16.1dB -0.2dB ±2.0dB
250 -8.6dB 0dB ±1.9dB
500 -3.2dB 0dB ±1.9dB
1K 0dB 0dB ±1.4dB
2K 1.2dB -0.2dB ±2.6dB
4K 1dB -0.8dB ±3.6dB
8K -1.1dB -3dB ±5.6dB
Fast Time Weighting Max Response: -1.0dB
Fast Time Weighting Tolerance: +1dB/ -2dB
Slow Time Weighting Max Response: -4.1dB
Slow Time Weighting Tolerance: ±2dB
For service on this or any other REED product or information on other
REED products, contact REED Instruments at [e-mail]

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6
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Instrument Description
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
18. SD card slot
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
7. Fast/Slow & Set Button
8. Peak Hold & Logger Button
9. Microphone

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7
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Operating Instructions
Function selection
1) Turn on the meter by pressing the Power Button. To turn the meter
off, hold the Power Button for over 2 seconds. 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:
Manual range 1, 30 - 80 dB range: Display will show the units “30 - 80”
Manual range 2, 50 - 100 dB range: Display will show the units “50 - 100”
Manual range 3, 80 - 130 dB range: Display will show the units “80 - 130”
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 mea-
sured value will hold on the screen, and a HOLD symbol will appear.
Press the Hold Button once again will release the data hold function.
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 maxi-
mum value, press the Hold Button once and the display will show
a “REC.” symbol only and execute the memory function continu-
ously. continued...

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8
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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 automati-
cally. 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.
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 rst time, it is
recommend to format the SD card. See Advanced Settings section
of this manual for instructions.
3) If this is the rst time the meter is used you need to adjust the
clock. See Advanced Settings section of this manual for instruc-
tions.
4) Now you need to set the decimal format. The numerical data struc-
ture 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.

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9
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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 ash while the measuring data and time informa-
tion 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 But-
ton once. While paused, the “REC” symbol will stop ashing. Press
the Logger Button again to resume Datalogging, and the “REC”
symbol will begin to ash 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.
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 ash once and one Beep will
sound, at the same time the measuring data along the time infor-
mation 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 ash on the display. Press the Up or
Down Buttons to set the Position Number (1 to 99) to help identify
the measurement location. The lower Display will show P x (x = 1 to
99). After the position number is selected, press the Enter Button to
conrm.
3) Stop Datalogging; press the REC Button for 2 seconds, and the
“REC” symbol will disappear indicating the Datalogging function
has stopped.

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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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 rst time the SD card is used in the meter, the SD card will
generate a folder: SLA01
2) The rst time you use the Datalogger, in the folder SLA01, a new
le name SLA01001.XLS will be created. The Datalogger will use
this le until the Data has reached to 30,000 rows. The meter will
then will generate a new le with a subsequent number, for ex-
ample SLA01002.XLS.
3) The folder SLA01 can hold 99.XLS les. 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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11
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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 les from the SD
Card to the computer by opening up the SD folder and selecting
the desired EXCEL les, and drag-and-drop them onto your Com-
puter. Open the les with EXCEL (File – Open).
4) The EXCEL le 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 But-
ton 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
While in the “Advanced Setting” function, press the Esc Button to exit and
to return to normal functioning.

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12
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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. To exit “Advanced Set-
tings”, press the Esc Button.
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” (“,” Deci-
mal Point).
2) After the Decimal point character has been selected, press the
Enter Button to save the setting as the default. To exit “Advanced
Settings”, press the Esc Button.
Auto power OFF management
1) When the lower display shows “PoFF”, use the Up or Down But-
tons 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. To exit “Advanced Settings”, press the Esc
Button.

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13
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Set Beeper Sound ON/OFF
1) When the lower display shows “bEEP”, use the Up or Down But-
tons 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
setting as the default. To exit “Advanced Settings”, press the Esc
Button.
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 But-
ton to save the setting as the default. To exit “Advanced Settings”,
press the Esc Button.
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 conrm. Press the Enter But-
ton to conrm.

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14
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
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 specic
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
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 D10 = 0
D11 D11 = 0
D12 D12 = 0
D13 D13 = 0
D14 D14 = 0
D15 Start Word

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15
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
System Reset
If an error occurs, press the Reset Button with a Pin. If the Reset Button
does not x 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
For service on this or any other REED product or information on other
REED products, contact REED Instruments at [e-mail]

reedinstruments
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16
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Notes _________________________________________
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