ACO 6236, Instruction Manual, Page: 39 / 154

38
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)
③ Time weighting
key
( F:Fast, S:Slow,
Imp:Impulse)
① Frequency
weighting key
(A
･ C, Z)
⑤ Measuring
time key
② Display
mode key
④ [Range] key