407790 Datasheet, PDF (11/18 Pages) Extech Instruments Corporation. – Real Time Octave Band Analyzer

FAST LA
dB
100
W
75.2 dB
90
80
70
60
50
40
30
Hz 31.5 125 500 2k
8k L W
[ 1 / 1 OCT ] 01 / 07 / 27 14:26:39
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 presets available:
• 1s
• 3s
• 10s
• 30s
• 1min
• 5min
• 8min
• 10min
• 15min
• 30min
• 1h
• 8h
• 24h
Note: The list wraps around from 24h to 1s.
11
Model 407790 Ver. 2.1 9/07