Extech Instruments 407790 - Page 11

Model 407790 Ver. 1.1 7/02L
11
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500
70
125Hz 31.5
60
40
30
50
A
FAST
L
100
80
90
dB
WL8k2k
75.2 dBW
L
eq
and L
E
measurement
To perform a measurement, carry out the following steps.
1. Set the power switch to ON and wait until the measurement screen appears.
2. Press the MEAS TIME button to set the preset measurement time (known as the integral
time) after which measurement automatically stops.
There are 13 preset time settings available:
•
1s
•
10min
•
3s
•
15min
•
10s
•
30min
•
30s
•
1h
•
1min
•
8h
•
5min
•
24h
•
8min
Note: The setting will wrap around from 24h to 1s.