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,
i
I
I
I
OPERATION
MANUAL
):
lu
L
Lr
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
1
mm
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,,
I
(
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