ACO 6236 - Page 83

11
Impulse equivalent continuous A-weighted sound pressure level (L
AIeq
)
measurement
Impulse equivalent continuous A-weighted sound pressure level (L
AIeq
) is equivalent continuous
sound pressure level with time weighting characteristics, ‘Impulse’.
It can be used only when A characteristics is selected in the default screen.
＜ Parameter setting ＞
Measurement is made according to the following procedure
① Frequency weighting key ：A (C or Z)
② Display mode key ：Leq
③ Time weighting key ：Imp
④ Range key ：Select a range where the bar graph indicates
approximately 2/3 of the full scale.
【Method of selecting
[Range]
key】
Press
[Range]
key, and choose by cursor keys▲▼, and press
[Range]
key
again to register.
⑤ Measuring time key ：1s, 3s, 5s, 10s, 1m, 5m, 10m, 15m, 30m, 1h, 8h, 24h
and＊＊＊(input to the
[Start/Stop]
key)
The measurement starts with
[Start/Stop]
key.
＜ Display＞
１０ｍ ０００ｈ００ｍ００ｓ
63.5 dB
40 130
Stp A Imp Leq
Measuring
time
Time weighting：Imp
Display mode
Leq
Rec:Blinks during
recording
Stp: Holding state
Frequency weighting ：A (C,Z)
③Time weighting
key
(
F
:Fast,
S
:Slow,
Imp
:Impulse)
①Frequency
weighting key
(A･C, Z)
⑤Measuring
time key
②Display
mode key
④
[Range]
key