Lutron Electronics SL-4023SD User manual

SD card real time data Recorder, USB/RS232
SOUND LEVEL METER
Model : SL-4023SD
Your purchase of this
SOUND LEVEL METE
R
with SD CARD DATA
RECORDER marks a
step forward for you
into the field of
precision measurement.
Althou
g
h this METER is
a complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operatin
g
techniques are
developed. Please read
the followin
g
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL

TABLE OF CONTENTS
1. FEATURES.............................................................................. 1
2. SPECIFICATIONS.....................................................................2
3. FRONT PANEL DESCRIPTION....................................................6
3-1 Display..............................................................................6
3-2 Power Button ( ESC, Backli
g
ht Button )................................6
3-3 Hold Button ( Next Button )................................................
.
6
3-4 REC Button ( Enter Button )...............................................6
3-5 Ran
g
e Button ( Button, Time Check Button )...................▲6
3-6 A/C Button ( Button, Samplin
g
check Button )..................▼6
3-7 Fast/Slow Button ( SET Button ).........................................6
3-8 Peak Hold Button ( Lo
gg
er Button ).....................................6
3-9 Microphone.......................................................................
.
6
3-10 AC output terminal...........................................................6
3-11 Calibration VR..................................................................6
3-12 RS-232 output terminal.....................................................6
3-13 DC 9V adapter socket.......................................................6
3-14 Tripod Fix Nut..................................................................6
3-15 Battery Cover Screws.......................................................
.
6
3-16 Stand..............................................................................6
3-17 Battery compartment/Cover..............................................
.
6
3-18 SD card socket.................................................................6
4. MEASURING PROCEDURE.........................................................7
5. DATALOGGER..........................................................................9
5-1 Preparation before execute datalo
gg
er function....................9
5-2 Auto Datalo
gg
er ( Set samplin
g
time 1 second )..............≧10
5-3 Manual Datalo
gg
er ( Set samplin
g
time = 0 second )...........
.
11
5-4 Check time information.......................................................12
5-5 Check samplin
g
time information.........................................12
5-6 SD Card Data structure.......................................................12
6. Savin
g
data from the SD card to the computer........................... 14
7. ADVANCED SETTING................................................................15
7-1 Set clock time ( Year/Month/Date, Hour/Minute/ Second ).....16
7-2 Decimal point of SD card settin
g
..........................................17
7-3 Auto power OFF mana
g
ement ............................................17
7-4 Set beeper Sound ON/OFF..................................................18
7-5 Set samplin
g
time .............................................................
.
18
7-6 SD memory card format.....................................................
.
19
8. POWER SUPPLY from DC ADAPTER...........................................
.
19
9. BATTERY REPLACEMENT..........................................................19
10. RS232 PC serial interface........................................................20
11CALIBRATION .........................................................................21
12. FREQUENCY WEIGHTING CHARACTERISTICS
OF A & C NETWORKS.............................................................22
13. TIME WEIGHTING (FAST & SLOW)
CHARACTERISTICS................................................................22
14. PATENT.................................................................................23

1. FEATURES
* Main functions are designed to meet IEC 61672 class 2.
* A & C weighting networks comply with standards.
* 0.5" standard microphone head.
* Time weighting (Fast & Slow) dynamic characteristic
modes.
* Build External calibration VR.
* Auto range & Manual range selection.
* Available for external calibration adjustment.
* Condenser microphone for high accuracy & long-term
stability.
* Memory function to store the Max. & Min. value.
* Hold and Peak Hold functions.
* Real time SD memory card Datalogger, it Built-in Clock
and Calendar, real time data recorder, sampling time set
from 1 second to 3600 seconds.
* Manual datalogger is available ( set the sampling
time to 0 second ), during execute the manual datalogger
function, it can set the different position ( location ) No.
( position 1 to position 99 ).
* Innovation and easy operation, computer is not need to
setup extra software, after execute datalogger, just take
away the SD card from the meter and plug in the SD card
into the computer, it can download the all the measured
value with the time information ( year/month/date/
hour/minute/second ) to the Excel directly, then user can
make the further data or graphic analysis by themselves.
* SD card capacity : 1 GB to 16 GB.
* LCD with green light backlight, easy reading.
* Can default auto power off or manual power off.
* Data hold, record max. and min. reading.
* Microcomputer circuit, high accuracy.
* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
* RS232/USB PC COMPUTER interface.
* Heavy duty & compact housing case.
1

2. SPECIFICATIONS
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 52 mm x 38 mm
LCD with green backlight ( ON/OFF ).
Measurement 30 - 130 dB.
Range
Resolution 0.1 dB.
Function dB ( A & C frequency weighting ),
Time weighting ( Fast, Slow ),
Peak hold, Data hold
Record ( Max., Min. ).
Accuracy Characteristics of " A " frequency
(23 ± 5 )℃weighting network meet IEC 61672
class 2.
Under 94 dB input signal, the accuracy
are :
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
Remark :
The above spec. are tested under the
environment RF Field Strength less
than 3 V/M & frequency less than 30
MHz only.
2

Frequency Characteristics of A & C.
Weighting
Network A weighting :
The characteristic is simulated as "Human
Ear Listing" response. Typical, if making
the environmental sound level
measurement, always select to A
weighting.
C weighting
The characteristic is near the "FLAT"
response. Typical, it is suitable for
checking the noise of machinery (Q.C.
check) & knowing the sound pressure
level of the tested equipment.
Time Fast - t= 200 ms
weighting * "Fast" range is simulated the human ear
(Fast & Slow) response time weighting.
Slow - t = 500 ms
* "Slow" range is easy to get the average
values of vibration sound level.
Data hold To freeze the measurement value.
Peak hold To keep the peak ( max. ) measurement
value.
Range selector Auto range : 30 to 130 dB.
Manual range :
3 range, 30 to 80 dB, 50 to 100 dB,
80 to 130 dB, 50 dB on each step,
with over & under range indicating.
Frequency 31.5 to 8,000 Hz.
Microphone Electric condenser microphone.
type
Microphone Out size, 12.7 mm DIA. ( 1/2 inch).
size
3

Calibration VR Build in external calibration VR, easy to
calibrate on 94 dB level by screw driver.
* Calibrated via external SOUND
CALIBRATOR ( SC-941, optional ).
Calibrator B & K (Bruel & kjaer), MULTIFUNCTION
ACOUSTIC CALIBRATOR 4226.
Datalogger Auto 1 second to 3600 seconds
Sampling Time
@ Sampling time can set to 1 second,
Setting range but memory data may loss.
Manual Push the data logger button
once will save data one time.
@ Set the sampling time to
0 second.
@ Manual mode, can also select the
1 to 99 position ( Location ) no.
Memory Card SD memory card. 1 GB to 16 GB.
Advanced * Set clock time ( Year/Month/Date,
setting Hour/Minute/ Second )
* Decimal point of SD card setting
* Auto power OFF management
* Set beep Sound ON/OFF
* Set sampling time
* SD memory card Format
Over Indication Show " - - - - ".
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Sampling Time Approx. 1 second.
of Display
Data Output RS 232/USB PC computer interface.
* Connect the optional RS232 cable
UPCB-02 will get the RS232 plug.
* Connect the optional USB cable
USB-01 will get the USB plug.
AC output AC 0.5 Vrms corresponding to each
range step.
* Output impedance : 600 ohm.
4

Power off Auto shut off saves battery life or
manual off by push button.
Operating 0 to 50 .℃
Temperature
Operating Less than 85% R.H.
Humidity
Power Supply *
A
Alkaline or heavy duty DC 1.5 V battery
( UM3, AA ) x 6 PCs, or equivalent.
*
A
DC 9V adapter input. ( AC/DC power
adapter is optional ).
Power Current Normal operation ( w/o SD card save
data and LCD Backlight is OFF) :
Approx. DC 12 mA.
When SD card save the data but and
LCD Backlight is OFF) :
Approx. DC 51 mA.
*
A
If LCD backlight on, the power
consumption will increase approx.
30 mA.
Weight 489 g/1.08 LB.
Dimension 245 x 68 x 45 mm.
( 9.6 x 2.7x 1.9 inch ).
Accessories * Instruction manual.......................
.
1 PC
Included
Optional * Sound calibrator ( 94 dB ), SC-941.
Accessories * Sound calibrator ( 94/114 dB ), SC-942.
* Sound wind shield ball, SB-01
* SD Card ( 2 GB )
* USB cable, USB-01.
* RS232 cable, UPCB-02.
* Data Acquisition software,
SW-U801-WIN.
* AC to DC 9V adapter.
* Soft carrying case, CA-05A.
* Hard carrying case, CA-06.
5

3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display.
3-2 Power Button ( ESC, Backlight Button )
3-3 Hold Button ( Next Button )
3-4 REC Button ( Enter Button )
3-5 Range Button ( Button, Time Check Button )▲
3-6 A/C Button ( Button, Sampling check Button )▼
3-7 Fast/Slow Button ( SET Button )
3-8 Peak Hold Button ( Logger Button )
3-9 Microphone
3-10 AC output terminal
3-11 Calibration VR
3-12 RS-232 output terminal
3-13 DC 9V adapter socket.
3-14 Tripod Fix Nut
3-15 Battery Cover Screws
3-16 Stand
3-17 Battery compartment/Cover
3-18 SD card socket 6

4. MEASURING PROCEDURE
4-1 Sound level meter
1)Power on by pressing the " Power On/Off Button " ( 3-2,
Fig. 1 ) , the meter's default function is " Auto range ",
" A frequency weighting " & " Fast time weighting ". The
LCD display will show the unit " A. Fast Auto ".
2)Select " A " or " C " frequency weighting by pressing the
" A/C Button " ( 3-6, Fig. 1 ) .
Note :
a. The characteristic table of A, C weighting, please
ref. page 22.
b. The characteristic of A weighting is simulated as
the " Human Ear Listening " response.
Typically always select the A weighting when makes
environmental sound level measurement.
c. The C weighting characteristic is near the " FLAT "
response. Typically it is suitable for checking the
noise of machinery ( Q.C. check ) & knowing the
real sound level of the tested equipment.
3)Determine proper measuring range by pressing the
" Range Button " ( 3-5, Fig. 1 ).
After power on the default range is " Auto range ".
In the same time the lower right display will show the text
of " Auto ".
Under the auto range, press the " Range Button " ( 3-5,
Fig. 1 ) once step by step will enter
to the manual range ( range 1, range 2, range 3 ) and
auto range in sequence. There are still 3 manual ranges
for your choice :
7

* Manual range 1 , 30 - 80 dB range :
Display will show the unit of " 30 - 80 ".
*
Manual range 2 , 50 - 100 dB range :
Display will show the unit of " 50 - 100 ".
*
Manual range 3 , 80 - 130 dB range :
Display will show the unit of " 80 - 130 ".
4) According to various measuring sound source, select the
Time Weighting ( Fast or Slow ) by pressing the " Time
Weighting Button " ( 3-7, Fig. 1 ).
Note :
a. If select the function of " Fast " time weighting, the
display will show the unit of " FAST".
b. If select the function of " Slow " time weighting, the
display will show the unit of " SLOW ".
4-2 Data Hold
During the measurement, press the " Hold Button " ( 3-3,
Fig. 1 ) once will hold the measured value & the LCD will
display a " HOLD " symbol.
Press the " Hold Button " once again will release the data
hold function.
4-3 Data Record ( Max., Min. reading )
1)The data record function records the maximum and
minimum readings. Press the " REC Button " ( 3-4, Fig.
1 ) once to start the Data Record function and there
will be a " REC " symbol on the display.
2)With the " REC " symbol on the display :
a)Press the " REC Button " ( 3-4, Fig. 1 ) once, the
" REC MAX " symbol along with the maximum value
will appear on the display.
If intend to delete the maximum value, just press
the " Hold Button " ( 3-3, Fig. 1 ) once, the display
will show the " REC " symbol only & execute the
memory function continuously.
8

b)Press the " REC Button " ( 3-4, Fig. 1 ) again, the
" REC MIN " symbol along with the minimum value
will appear on the display.
If intend to delete the minimum value, just press the
" Hold Button " ( 3-3, Fig. 1 ) once, the display will
show the " REC " symbol only & execute the
memory function continuously.
c)To exit the memory record function, just press the
" REC " button > 2 seconds at least. The display will
revert to the current reading.
4-4 LCD Backlight ON/OFF
After power ON, the " LCD Backlight " will light
automatically. During the measurement, press the
" Backlight Button " ( 3-2, Fig. 1 ) once will turn OFF the
" LCD Backlight ".
Press the " Backlight Button " once again will turn ON the
" LCD Backlight " again.
5. DATALOGGER
5-1 Preparation before execute datalogger function
a. Insert the SD card
Prepare a " SD memory card " ( 1 GB to 16 GB, optional ),
insert the SD card into the " SD card socket " ( 3-18, Fig. 1).
The front panel of the SD card should face against the
the down case.
b. SD card Format
If SD card just the first time use into the meter, it
recommend to make the " SD card Format " at first. ,
please refer chapter 7-6 ( page 19 ).
9

c. Time setting
If the meter is used at first time, it should to adjust the
clock time exactly, please refer chapter 7-1 ( page 16 ).
d. Decimal format setting
The numerical data structure of SD card is
default used the " . " as the decimal, for
example "20.6" "1000.53" . But in certain
countries ( Europe ...) is used the " , " as the
decimal point, for example " 20, 6 "
"1000,53". Under such situation, it should
change the Decimal character at first, details
of setting the Decimal point, refer to Chapter
7-2, page 17.
5-2 Auto Datalogger ( Set sampling time 1 second )≧
a. Start the datalogger
Press the " REC Button ( 3-4, Fig. 1 ) once , the LCD will
show the text " REC ", then press the " Logger Button "
( 3-8, Fig. 1 ), the " REC " will flashing, at the same
time the measuring data along the time information will
be saved into the memory circuit.
The Display will show also show text " LOGGER "
when the data save into the memory circuit.
Remark :
How to set the sampling time, refer to Chapter 7-5,
page 18.
10

b. Pause the datalogger
During execute the Datalogger function , if press the
" Logger Button " ( 3-8, Fig. 1 ) once will pause the
Datalogger function ( stop to save the measuring data
into the memory circuit temporally ). In the same time
the text of " REC " will stop flashing.
Remark :
If press the " Logger Button " ( 3-8, Fig. 1 ) once again
will execute the Datalogger again, the text of " REC " will
flashing .
c. Finish the Datalogger
During pause the Datalogger, press the " REC Button "
( 3-4, Fig. 1) continuously at least two seconds, the " REC "
indicator will be disappeared and finish the Datalogger.
Remark :
When the battery is under the low battery condition
( show the low battery indicator ), the Datalogger
function is disable.
5-3 Manual Datalogger ( Set sampling time = 0
second )
a. Set sampling time is to 0 second
Press the " REC Button ( 3-4, Fig. 1 ) once , the LCD will
show the text " REC ", then press the " Logger Button "
( 3-8, Fig. 1 ) once, the " REC " will flashing once , at
the same time the measuring data along the time
information and the Position no. will be saved into the
memory circuit.
11

Remark :
* Lower Display will show the Position/Location no.
( P1, P2... P99 ) .
* During execute the Manual Datalogger,
press the " SET Button " ( 3-7, Fig. 1 ) once, then use
the " Button " ( 3-5, Fig. 1) or " Button " ( 3-6,▲▼
Fig. 1 ) to set the measuring position ( 1 to 99, for
example room 1 to room 99 ) to identify the
measurement location. After finish the adjustment
location no., press the " Enter Button " to entry.
b. Finish the Datalogger
Press the " REC Button " ( 3-4, Fig. 1) continuously at
least two seconds, the " REC " indication will be
disappeared and finish the Datalogger.
5-4 Check time information
During the measurement if press " Time check Button "
( 3-5, Fig. 1 ) > 2 seconds, the lower LCD display will
present the time information of Year/Month, Date/Hour,
Minute/Second.
5-5 Check sampling time information
During the measurement , If press " Sampling Check
Button " ( 3-6, Fig. 1 ) > 2 seconds, the lower LCD display
will present the Sampling time information in second unit.
5-6 SD Card Data structure
1) When the SD card is used into the meter, the SD card
When the first time, the SD card is used into the meter,
the SD card will generate a folder :
SLA01
12

2)If the first time to execute the Datalogger,
under the route SLA01\, will generate a new
file name SLA01001.XLS.
After exist the Datalogger, then execute again,
the data will save to the SLA01001.XLS until
Data column reach to 30,000 columns, then
will generate a new file, for example SLA01002.XLS
3)Under the folder SLA01\, if the total files more
than 99 files, will generate anew route, such as
SLA02\ ........
4)The file's route structure :
SLA01\
SLA01001.XLS
SLA01002.XLS
.....................
SLA01099.XLS
SLA02\
SLA02001.XLS
SLA02002.XLS
.....................
SLA02099.XLS
SLAXX\
.....................
.....................
Remark : XX : Max. value is 10.
13

6. Saving data from the SD card
to the computer ( EXCEL software )
1)After execute the Data Logger function, take away the
SD card out from the " SD card socket " ( 3-18, Fig. 1 ).
2)Plug in the SD card into the Computer's SD card slot
( if your computer build in this installation ) or
insert the SD card into the " SD card adapter ". then
connect the " SD card adapter " into the computer.
3)Power ON the computer and run the " EXCEL software ".
Down load the saving data file ( for example the file
name : SLA01001.XLS, SLA01002.XLS ) from the SD
card to the computer. The saving data will present into
the EXCEL software screen ( for example as following
EXCEL data screens ) , then user can use those EXCEL
data to make the further Data or Graphic analysis
usefully.
EXCEL data screen ( for example )
14

EXCEL graphic screen ( for example )
7. ADVANCED SETTING
Under do not execute the Datalogger function,
press the " SET Button " ( 3-7, Fig. 1 ) continuously at
least two seconds will enter the " Advanced Setting " mode.
then press the " Next Button " (3-3, Fig. 1 ) once a while
in sequence to select the six main function, the lower
display will show :
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
Sd-F..... SD memory card Format
15

Remark :
During execute the " Advanced Setting " function,
if press " ESC Button " ( 3-2, Fig. 1 ) once will exit
the " Advanced Setting " function, the LCD will
return to normal screen.
7-1 Set clock time ( Year/Month/Date,
Hour/Minute/ Second )
When the lower display show " dAtE "
1)Press the " Enter Button " ( 3-4, Fig. 1 ) once,
Use the " Button " ( 3-5, Fig. 1 ) or " Button "▲▼
( 3-6, Fig. 1 ) to adjust the value ( Setting start from
Year value ). After the desired value is set, press the
" Enter Button " ( 3-4, Fig. 1 ) once will going to
next value adjustment ( for example, first setting
value is Year then next to adjust Month, Date, Hour,
Minute, Second value ).
2)After set all the time value ( Year, Month, Date, Hour,
Minute, Second ),
the screen will jump to " SD card Decimal character "
setting screen ( Chapter 7-2 ).
Remark :
After the time value is setting, the internal clock will
run precisely even Power is off ( The battery is under
normal condition, no low battery condition ).
16

7-2 Decimal point of SD card setting
The numerical data structure of SD card is default used
the " . " as the decimal, for example "20.6" "1000.53" .
But in certain countries ( Europe ...) is used the " , " as
the decimal point, for example " 20,6 " "1000,53".
Under such situation, it should change the Decimal
character at first.
When the lower display show " dEC "
1)Use the " Button " ( 3-5, Fig. 1 ) or " Button "▲▼
( 3-6, Fig. 1 ) to select the upper value to " bASIC " or
" Euro ".
bASIC - Use " . " as the Decimal point with default.
Euro - Use " , " as the Decimal point with default.
2)After select the upper text to " bASIC " or " Euro ",
press the " Enter Button " ( 3-4, Fig. 1 ) will save the
setting function with default.
7-3 Auto power OFF management
When the lower display show " PoFF "
1)Use the " Button " ( 3-5, Fig. 1 ) or " Button "▲▼
( 3-6, Fig. 1 ) to select the upper value to " yES " or
" no ".
yES - Auto Power Off management will enable.
no - Auto Power Off management will disable.
2)After select the upper text to " yES " or " no ", press the
" Enter Button " ( 3-4, Fig. 1 ) will save the setting
function with default.
17

7-4 Set beeper sound ON/OFF
When the lower display show " bEEP "
1)Use the " Button " ( 3-5, Fig. 1 ) or " Button "▲▼
( 3-6, Fig. 1 ) to select the upper value to " yES " or
" no ".
yES - Meter's beep sound will be ON with default.
no - Meter's beep sound will be OFF with default.
2)After select the upper text to " yES " or " no ", press the
" Enter Button " ( 3-4, Fig. 1 ) will save the setting
function with default.
Remark :
After execute the datalogger function, the buzzer sound
will off automatically to prevent any interference of
the measurement.
7-5 Set sampling time ( seconds )
When the lower display show " SP-t "
1)Use the " Button " ( 3-5, Fig. 1 ) or " Button " (▲▼
3-6, Fig. 1 ) to adjust the value ( 0, 1, 2, 5, 10, 30,60,
120, 300, 600, 1800,3600 seconds ).
Remark :
If select the sampling time to " 0 second ", it is ready
for manual Datalogger.
2)After the Sampling value is selected, press the
" Enter Button " ( 3-4, Fig. 1 ) will save the setting
function with default.
18