Hioki 8841 - Page 187

163
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8.7 FFT Analysis Function
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0: 1/1 OCT, 1: 1/3 OCT
Band No. Center
frequency
(Hz)
133
m
333
m
667
m
1.33 4 8 20 40 80 200 400 800 2k 4k 8k 20k 40k 80k 200k400k
1/1 1/3
-8
-24
-23
4m
5m
0
1
-7
-22
-21
-20
6.3 m
8m
10 m
1
0 1
1
0
1
-6
-19
-18
-17
12.5 m
16 m
20 m
1
0 1
1
1
0 1
1
0
1
-5
-16
-15
-14
25 m
31.5 m
40 m
1
0 1
1
1
0 1
1
1
0 1
1
0
1
-4
-13
-12
-11
50 m
63 m
80 m
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
-3
-10
-9
-8
100 m
125 m
160 m
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0 1
1
-2
-7
-6
-5
200 m
250 m
315 m
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0 1
1
-1
-4
-3
-2
400 m
500 m
630 m
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0
1
0
-1
0
1
800 m
1
1.25
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0
1
1
2
3
4
1.6
2
2.5
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0
1
2
5
6
7
3.15
4
5
1
0 1
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
3
8
9
10
6.3
8
10
1
0 1
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
4
11
12
13
12.5
16
20
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
5
14
15
16
25
31.5
40
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
6
17
18
19
50
63
80
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0 1
1
7
20
21
22
100
125
160
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0 1
1
8
23
24
25
200
250
315
1
0
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0 1
1
9
26
27
28
400
500
630
1
0
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0
1
10
29
30
31
800
1k
1.25 k
1
0
1
0 1
1
1
0 1
1
1
0 1
1
1
0 1
1
0
1
Frequency ranges and measurable range widths (0: 1/1 OCT, 1: 1/3 OCT)