5 6
BAT
F
dB
S
①
Windscreen
If you operate at wind speed over 10m/sec, please put
protective accessories in front of the microphone.
②
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
③
Power ON/OFF button
Turn the meter power ON/OFF
④
MAX button MAX
The max. Hold position is used to measure the maximum
level of sounds. The maximum measured level is up dated
continuously.
Press once again the button, will release the
hold and allow a further measurement.
⑤
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)
⑥
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
⑦
Level range select button Lo/Hi
Lo
: 30~100dB;
Hi
: 60~130dB
When “OVER” is indicated, the ranges switch to another
range for measurement.