Marconi Instruments TF 2502 Instruction Manual page 13

DECIBEL CONVERSION TABLE (continued)
Ratio Down
Ratio Up
VOLTAGE
POWER
DECIBELS
VOLTAGE
POWER
·1585 ·02512
16
6·310
39·81
·1413 ·01995 17
7·079
50·12
·1259 ·01585
18
7·943
63·10
·1122 ·01259
19
8·913 79·43
·1000 ·01000
20
1 0·000
1 00·00
·07943
6·310
X
10-
3
22 12·59
158·5
·06310
3·981
X
10-'
24
15·85
251·2
·05012
2·512
X
10-' 26
19·95
398·1
·03981
1·585
X
10
3 28
25·12 631·0
·03162
1·000
X
10
3 30
31-62 1,000
·02512 6·310
X
10
4 32
39·81
1·585
X
10
3
·01995
3·981 x 1 o-• 34
50·12
2·512
X
10 3
·01585
2·512
X
10-
4
36
63·10
3·981
X
10 3
·01259
1·585 x 1 o-•
38
79·43
6·310
X
10
3
·01 000
1·000
X
10
4
40
1 00·00
1·000
X
10
4
7·943
X
10- 3
6·310
X
10-s 42
125·9
1·585
X
10'
6·310
X
10-'
3·981
X
1 o-s
44
158·5
2·512
X
10
4
5·012
X
10-'
2·512
X
1 o-s 46
199·5
3·981
X
10
4
3·981
X
10
3 1·585
X
10-s 48
251·2
6·310
X
10
4
3·162
X
10-
3 1·000
X
10-s 50
316·2
1·000
X
10
5
2·512
X
10
3 6·310 x 1o-• 52
398·1
1·585
X
10
5
1·995
X
10-'
3·981 x 1 o-•
54 501·2
2·512
X
10
5
1·585
X
10-'
2·512
X
10
6
56
631·0 3·981
X
10 5
1·259
X
10-' 1·585
X
10-'
58
794·3 6·310
X
10 5
1·000
X
10
3 1·000
X
10-' 60
1,000
1·000
X
10
6
5·623 x 1 o-• 3·162
X
10-
7
65
1·778
X
10
3
3·162
X
10'
.3·162 x 1 o-• 1·000
X
10-
7
70
3·162
X
10
3
1·000
X
10
7
1-778
X
10
4
3·162
X
10-a
75
5·623
X
10
3
3·162
X
10
7
1·000 x 1o-• 1·000
X
10
8 80
1·000
X
10
4
1·000
X
10 8
5·623
X
10-s
3·162
X
10-' 85
1·778
X
10
4
3·162
X
10
8
3·162
X
1 o-s 1·000
X
10-' 90
3·162
X
10
4
1·000
X
10'
1·000
X
10-s
1·000
X
10-
10 100
1·000
X
10
5
1·000
X
10
10
3·162
X
10-
6
1·000
X
10- 11
110
3·162
X
10
5
1·000
X
10 11
1·000
X
10
6
1·Q00
X
10-
12 120
1·000
X
10' 1·000
X
10
12
3·162
X
10-
7
1-ooo x 1 o-"
130
3·162
X
10
6
1·000
X
10
13
1·000
X
10-
7
1·000
X
10- 14
140
1·000
X
10 7
1·000
X
10
14
12
2502 (1)