User manual

Appendix D: Microvolt – dBm – Watt Conversion D-1
Moseley SL9003Q 602-12016 Revision G
Appendix D: Microvolt – dBm – Watt
Conversion (50 ohms)
Vrms dBm Watts Vrms dBm Watts Vrms dBm Watts
μV dBm
224
-60
1 nW 71
-10
100 µW
0.7
-110
10 fW
251
-59
79
-9
0.8
-109
282
-58
89
-8
0.9
-108
316
-57
100
-7
1
-107
354
-56
112
-6
1.1
-106
398
-55
126
-5
1.2
-105
446
-54
141
-4
1.4
-104
500
-53
158
-3
1.5
-103
561
-52
178
-2
1.7
-102
630
-51
199
-1
1.9
-101
707
-50
10 nW 224
0
1 mW
2.2
-100
100 fW
793
-49
251
+1
2.5
-99
890
-48
282
+2
2.8
-98
1000
-47
316
+3
3.1
-97
m
V
dBm
354
+4
3.5
-96
1.1
-46
398
+5
3.9
-95
1.2
-45
446
+6
4.4
-94
1.4
-44
501
+7
5
-93
1.5
-43
562
+8
5.6
-92
1.7
-42
630
+9
6.3
-91
1.9
-41
707
+10
10 mW
7
-90
1 pW 2.2
-40
100 nW
793
+11
7.9
-89
2.5
-39
890
+12
8.9
-88
2.8
-38
1000
+13
9.9
-87
3.1
-37
V
dBm W
11
-86
3.5
-36
1.1
+14
0.025
13
-85
3.9
-35
1.2
+15
0.032
14
-84
4.4
-34
1.4
+16
0.04
16
-83
5
-33
1.5
+17
0.05
18
-82
5.6
-32
1.7
+18
0.063
20
-81
6.3
-31
1.9
+19
0.08
22
-80
10 pW 7
-30
1 µW 2.2
+20
0.1 W
25
-79
7.9
-29
2.5
+21
0.13
28
-78
8.9
-28
2.8
+22
0.16
32
-77
9.9
-27
3.1
+23
0.2
35
-76
11
-26
3.5
+24
0.25
40
-75
13
-25
3.9
+25
0.3
45
-74
14
-24
4.4
+26
0.4
50
-73
15
-23
5
+27
0.5
56
-72
17
-22
5.6
+28
0.63
63
-71
19
-21
6.3
+29
0.8
71
-70
100 pW 22
-20
10 µW 7
+30
1 W
79
-69
25
-19
7.9
+31
1.2
89
-68
28
-18
8.9
+32
1.5
100
-67
32
-17
9.9
+33
2
112
-66
35
-16
11.2
+34
2.5
126
-65
40
-15
12.5
+35
3.1
141
-64
45
-14
14.1
+36
3.9
158
-63
50
-13
15.8
+37
5
177
-62
56
-12
17.7
+38
6.3
200
-61
63
-11
19.9
+39
7.9
223
-60
1 nW 71
-10
100 µW 22.3
+40 10 W