Model 407790 Ver. 2.1 9/07

11

[ 1 / 1 OCT ] 01 / 07 / 27 14:26:39

500

70

125

Hz 31.5

60

40

30

50

A

100

80

90

dB

W

L

8k

2k

75.2 dB

W

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

• 10min

• 3s

• 15min

• 10s

• 30min

• 30s

• 1h

• 1min

• 8h

• 5min

• 24h

• 8min

Note: The list wraps around from 24h to 1s.