ACO 6236 - Page 34

33
Percentile level (L
AN
) measurement
＜ Parameter setting ＞
1) The key operation is similar to the measurement of A-weighted sound pressure level (L Aeq )
2) To display the value Lmax, keep the "LA05 ,LA10 ,LA50 ,LA90 ,LA95" key ON in advance
in the
<View Mode> 3/3
screen.
①Frequency weighting key ：A,C or Z
②Display mode key ：L
N
(To display the percentile level (L
N
)
Measurement.）
③Time weighting key ：Fast or Slow (Imp)
④Range 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.
⑤Measuring time key ：1s, 3s, 5s, 10s，1m，5m，10m，15m, 30m，1h, 8h, 24h
and ＊＊＊(input to the
[Start/Stop]
key)
3) The measurement starts with
[Start/Stop]
key.
＜ Display ＞
NOTE
The L
N
computation is made at
sampling rate 100msec, which
tends to influence the acculacy
in the condition of measureing
time less than 10sec.
１０ｍ ０００ｈ００ｍ０５ｓ
63.5 dB
40 130
Stp A Fast L05
Frequency weighting ：A,C or Z
Measuring
time
Time weighting：Fast, Slow
Display mode
L05, L10, L50, L90, L95
Rec:Blinks during
recording
Stp: Halting state
<View Mode> 3/3
Lp :INST
(A)view LA05：ON
LAeq ：OFF
LA10：ON
LAE ：OFF
LA50：ON
LAmin：OFF
LA90：ON
LAmax：OFF
LA95：ON
＜Menu＞
②Display
mode key
④
[Range]
key
③Time weighting
key
(
F
:Fast,
S
:Slow)
⑤Measuring
time key
2)
[Menu]
key
①Frequency
weighting key
(A･C, Z)