Lutron Electronics SL-4010 User manual
SOUND LEVEL
METER
Model I SI-4O1O
Your purchase of thls
SOUND LEVEL METER
marks a step forward for
you into the fleld of
precision measurement,
Although this METER is a
complex and delicate
instrument, iE durable
structure will allow many
years of use if proper
operatlng technlques are
developed. Please read
the followlng lnstrucflons
carefully and always keep
thls manual wlthin easy
reach,
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OPERATION MANUAL
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TABLE OF CONTENTS
1. FEATURES. 1
2, SPECIFICATIONS......................................................1
3. FRONT PANEL DESCRIPTION....................
r 3-1 Electric condenser microphone.......
3-2 Display........
3-3 Fange upper / lower indicator,...........
3-4 Range switctt
3-5 External callbration VR.....,,........,.'.".........'........3
3-6 Power OFF/ON/Hold switch.....,,...,..'....'............. 3
3-7 Battery compartment / Cpver..........'.,.....'....'....' 3
4. MEASURING PROCEDURE...... ..........,4
5. REPLACEMENT Of BATTERY 4
3
3
,3
3
,3
6. CALIBRATION
7, FREQUENCY WEIGHNNG CHARASTERISTICS
oF . A ', NETWORI(S.....................
5
6
1. FEATURES
* Large LCD dlsplay, easy to read.
* Characterlstlc of " A " ftequency wdghflng network are
deslgned to meet IEC 61672 class 2.
* Build in adj. VR is available for easy callbration.
* Condenser microphone for high accuracy & long-term
stability.
* Hold function to freeze the dlsplay value.
* Warning lndicator for over and under range.
* LCD display for low power consumption & clear
read-out even in bright ambient llght condition.
* Used the durable, long-lasHng components, including a
strong, llght weight ABS-plastic housing case.
* Small and llght weight design allow one hand operaflon.
* Low battery indicator.
f High quallty with economical cost.
2. SPECIFICATIONS
Dlsplay 1mm LCD Crystal
3
Measurement
Range to 3Eng6:
range I - 35 to 80 dB,
range 2 - 50 to 100 dB,
range 3 - 80 to 130 dB,
t Each range wlth warnlng lndlcator for
over & under load,
Resoludon 0.1 dB.
Measuremefit
Fr@uency 31.5 Hz to 8,000 Hi,
Frequency
Welghtlng Characterlstlcs A
welghtlng network.
* The " A welghung " characterisflc ls
slmulated as "Human Ear Llsung,,
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Default to " Fast " ume welghtlng
characterlstlcs.
* " Fast tlme welghtlng " ls slmulated
human ear character.
Time Welghting
Characteristlcs of " A " frequency
welghtlng network meet IEC 61672
class 2.
Under 94 dB lnput slgnal, the accuracy
are :
31.5 Hz * 3.5 dB
63 Hz + 2.5 dB
125 Hz * 2.0 dB
250 Hz * 1.9 dB
500 Hz + 1.9 dB
1K Hz + 1.4 dB
2K Hz + 2,6 dB
4K Hz + 3.6 dB
8K Hz * 5.6 dB
Rdna* :
Thc abw sp*. are Etul un&r the
envlorrnent RF Fl& SxeMth bs than
3 V/M & fiquency les ,an 30 lqHz
only.
Accuracy
(23* 5 C)
B&K(Bruel & kjaer), multl-fuctlon
acousuc Gllbrator, model : 4226.
Calibrator
EmiE mndenser mlcrophone.
Microphone V2 lnEh standard slze.
Slze of mlcrophone callbradon VR, easy to
Bulld ln
callbrate on 94 dB level by screw drlvel.
callbratlon vR Eolililnoon
o tieeze the dlsplay value.
Data Hold 0to50t ( 32 to 122 'F ).OperaUng Temp. Less than 80ry0 RH.
ODeraunq Humldlty
006 P, MN1504(PP3) or equlvalent.
AMfrne or Havy dW ttw, 9V d,c
Power Supply
Approx. DC 6 mA.
Pofler Consumptlon 250 x7OtrB mm ( 9.9 x 2.8 x 1.1 inch ).
Dlmenslon lncludlng
2so s/o.ss LB (
Welqht 1 PC.
Instructlon r,lanri i
Standard
Accessorles
Hard
Model : SC-941 sc-942.
Callbrator,
B
94
Model : cA-06
OpUonal
Accessorles
2
3. FRONT PANEL DESCRIPTION
3-1
3-2
34
3-5
3-7
3-1 Electrlc condenser microphone
3-2 Disday
3-3 Range upper / loarer indlcator
3-4 Range surltch
3-5 ExErnal callbraUon VR
3-6 Power ON/OFF/Hold srritch
" 1" = Powor ON "O " = Poriy€r OFF
3-7 Battery compartment / Cover
3-3
3-6
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4. MEASURING PROCEDURE 6. CALIBRATION
l)Sllde the " Power ON/oFFlHold s\ rltch " ( 3-6, Flg. 1 ) to
the " I " posltlon wlll power on the meter.
" t'= Pow€ro . 'O"=PowelOFF
2) Determlne proper measurlng range by selecting the
" Range $ritch " ( 34t Fig. I ) to minlmize the tolerance of
readout. When left corner of LCD show
( Range upper / lower indicator, 3-3, Fig. 1 )' it shows
tne de range selectlon ls upper or lower setting' Slide
range switch to other range for measuring.
3) Hold the instrument in hand and point the microPhone at
measured nolse source, the sound level wlll be displayed
on'dB"(decibel)unlt.
4) During the measurement, if slide the " Power
'ON/OFF/Hold s,witch " ( 3-6, Fig. 1 ) to the " Hold "
position will fteeze the display value. If slide the - . - ..
i power ON/OFF/Hold switch ,r ( 3-6, Ftg. 1 ) to the " 1 "
position. then the display wlll make the measurement
conunually.
l)When the left corner of LCD display show " BAT ",
It lndicate a normal battery output of less than
6.5 V - 7.5 V. It ls necessary to replace the battery'
Howe\rer, in-spec. measurernent may sUll be made for
seveml hours after LOW BATTERY INDICATOR
appears befure the lnstrument becrrne inacqJrate'
Z) Sirie the Battery Cover ( 3'7, Fig. 1 ) & take the battery
away from the battery compartment..
3) Replace wlst 9V battery ( Atlcline or Heavy duty type,
'ooe P, MN1604/PP3 or equivatent ) and relnstate the cover'
* The sound level meter is built in the inbrnal
" Extemal callbratlon VR ' ( 3-t ng, I ) on the front
NneL
* Pl&se accodtng the bllowlng prccdur$ b'calibrate
the insbumeht afiuntely, f lt is rresaty,
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(1) Prepare the optional " SOUND CALIBRAToR, model:
SC-941, SC-942 or other equivalent sound calibrator.
Power on the Sound Calibrator & plug calibrator output
into the " Electric condenser micro- phone " ( 3-1, Fig. 1 )
of the Sound Level Meter.
2) Slide the " Range switch " ( 3-4, Fig' 1 ) to' 50 - 100 dB "
position.
3) Carefully adjust the " Calibration VR ' ( 3-5 ) with " - "
screw driver, untll the display read within " 94'0 + 0.2 'dB.
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. REPLACEMENT OF BATTERY
5
31.5 -39.4 dB I 3.5 dB
63 -26.2 dB + 2.5 dB
125 -16.1 dB + 2.0 dB
250 -8.6 dB * 1.9 dB
500 -3.2 dB + 1.9 dB
IK 0dB
2K +1.2 dB * 2.6 dB
4K +1 dB * 3.5 d8-
8K -1.1 dB * 5.6 dB
7. FREQUENCY WEIGHTING
CHARACTERISTICS OF '' A ''
NETWORKS
rt
6
* 1.4 dB
Table of contents
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