Lutron Electronics SL-4010 Manuale utente

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,

OPERATION MANUAL

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

6. CALIBRATION

7, FREQUENCY WEIGHNNG CHARASTERISTICS

oF . A ', NETWORI(S.....................

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

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,,

(

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,

Model : cA-06

OpUonal

Accessorles

3. FRONT PANEL DESCRIPTION

3-1

3-2

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

I \.{t

rm rm

I-

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,

(

(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.

. REPLACEMENT OF BATTERY

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

* 1.4 dB

Indice

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