ACO 6236 - Cpeak ) Measurement

35
C-weighted peak sound pressure level (L
Cpeak
) measurement
The peak sound level is peak sound pressure level before smoothed with the time weighting
characteristics.
L
cpeak
is wavy peak level of C characteristic.
＜ Parameter setting ＞
Measurement is made according to the following procedure
① Frequency weighting key ：C
② Display mode key ：Peak
③ Time weighting key ：Any of F, S or Imp (doesn't influence the
measurement.)
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 ＞
・Measurement starts with
[Start/Stop]
key pushed, and ends up automatically at the Measuring
time.
・Digital display indicates the halfway result at the current point of time.
(Display “ Rec “ blinks while the measurement)
・By pushing
[Start/Stop]
key in course of the measurement, calculation is done using the data
so far.
・When ＊＊＊ is selected, the final data is calculated and displayed only when
[Start/Stop]
key
is pushed or 199 hours have gone through.
Measuring
time
Rec:Blinks during
recording
Stp: Holding state
１ｓ ０００ｈ００ｍ００ｓ
63.5 dB
40 130
Stp C Fast Peak
Display mode
Peak
Time weighting：Any of F, S or Imp
(do
esn't influence the measurement.
)
Frequency weighting ：C
②Display
mode key
④
[Range]
key
③Time weighting
key
(
F
:Fast,
S
:Slow,
Imp
: Impulse)
①Frequency
weighting key
(A･C, Z)
⑤Measuring
time key