Extech Instruments 407790 - Measurement Screens

Model 407790 Ver. 1.1 7/02L
7
Measurement Screens
1. Sound pressure level measurement screen
[ SLM ] 01 / 07 / 27 14:26:39
A
L
30 80
FAST
dB
130
2. 1/1-octave analysis screen
The staircase shape on the display represents the 1/1-octave analysis result. From left,
the bars correspond to 31.5, 63, 125, 250, 500, 1k, 2k, 4k, 8kHz. To read the levels at
these frequencies, use the Cursor key to move the cursor to the desired point.
The frequency and level are then shown on the upper of the screen.
68.4 dB
[ 1 / 1 OCT ] 01 / 07 / 27 14:26:39
50
31.5 125Hz
30
8k2k500
AL
100
dB
70
90
FAST
2k Hz
L W
40
60
80
3. 1/3-octave analysis screen
The staircase shape on the display represents the 1/3-octave analysis result. From left,
the bars correspond to 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500,
630, 800, 1k, 1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k, 6.3k, 8k, 10kHz. To read the levels at
these frequencies, use the Cursor key to move the cursor to the desired point.
The frequency and level are then shown on the upper of the screen.