ACO 6236 - Page 37

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← Count-up timer for the measurement
← Starts with display ―. ― when the measurement
mode is tm5 .
Measurement value is displayed every 5 second.
← The bar displays the instantaneous level in every
0.1 second.
← L
A
and tm5 can be changed.
Current level is displayed with L
A
selected value.
Power average value of the maximum sound pressure level in a given interval
(L
Atm5
) measurement
Power average value of the maximum sound pressure level in a given interval (L
A tm5
) is power
average of the maximum value of A-weighted sound pressure level in successive 5-sec intervals.
It can be measured only when A characteristics is selected in the standard screen.
＜ Parameter setting ＞
Mode: Normal in < System>1/3 is changed to Mode:L
Atm5
with the ▲▼key in Menu
screen. The screen for power average of the maximum value appears when the
change is fixed and resisted with Set key.
【Method of selecting
[Range]
key】
Press
[Range]
key, and choose by cursor keys▲▼, and press
[Range]
key
again to register.
Measurement is made according to the following procedure
① Frequency weighting key ：A
② Display mode key ：L
A
or tm5
③ Time weighting key ：F or S
④ Range key ：Select a range where the bar graph indicates
approximately 2/3 of the full scale.
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 ＞
Press
［Start/Stop］
key
The Rec blinks with
[Start/Stop]
key input
<System> 1/3
Mode ：LAtm5
Data delete ：off
LCD cont ：＊＊＊
Date y/m/d ：01/01/01
Time h/m/s ：00:00:00
Printer(PC)set ：9600
USB out ：OFF
M
easurement time 10s (second)
display
00h00m00s
00h00m01s
00h00m02s
・
00h00m09s ← End in 10seconds
00h00m00s ← The following measurement
＊When Menu Intr:Single is measured, it becomes Repeat
continuous work as the measurement time display.
１０ｓ ０００ｈ００ｍ００ｓ
－－．－ ｄＢ
40 LAtm5 130
６３．５
ｄＢ
40 LAtm5 130
１０ｓ ０００ｈ００ｍ００ｓ
＜Menu＞
Stp A Fast LA
Rec A Fast LA
③Time weighting
key
(
F
:Fast,
S
:Slow,
Imp
:Impulse)
①Frequency
weighting key
(A･C, Z)
⑤Measuring
time key
②Display
mode key
④
[Range]
key
Bar: Displays the current instantaneous level.
L
A
or tm5
Time weighting：F, S