BAT
F
dB
S
p
p
p
p
!
!!
!
Windscreen
If you operate at wind speed over 10m/sec, please put protective
accessories in front of the microphone.
q
q
q
q
!
!!
!
Display
SYMBOL
FUNCTION
LCD
4digits
MAX
Maximum Value hold
OVER
Over range
F
Fast response
S
Slow response
A
A-Weighting
C
C-Weighting
Lo
Low Range (30~100dB)
Hi
High Range (60~130dB)
BAT
Low-Battery
r
r
r
r
Power ON/OFF button
Turn the meter power ON/OFF
s
s
s
s
Backlight Button:
Turn the meter backlight ON/OFF
t
t
t
t
A-weighting / C-weighting select button A/C
A: A – Weighting. For general sound level measurements.
C: C – Weighting. For checking the low- frequency content of
noise.
(If the C-Weighted level is much higher than the
A-Weighted level, then there is a large amount of
low-frequency noise)
u
u
u
u
Time weighting select button F/ S
F (fast response): for normal measurements (fast varying
noise)
S (slow response): for checking average level of
fluctuating noise
v
v
v
v
Level range select button Lo/Hi
Lo: 30~100dB; Hi: 60~130dB
When “OVER” is indicated, the ranges switch to another
range for measurement.
5 6