ACO 6236 - Page 82

10
Impulse sound pressure level(L
AI
) measurement
Impulse sound pressure level (L
AI
) is A-weighted 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 ：L
A (
L
C
or Lp)
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.
＜ Display＞
１０ｍ ０００ｈ００ｍ００ｓ
63.5 dB
40 130
Stp A Imp LA
Measuring
time
Time weighting：Imp
Display mode
L
A
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)
②Display
mode key
④
[Range]
key