Spartan 821/721 Manual
IEC 61672-1 Section 9.3
B-12
5309
-0.58
-0.60
-0.65
-0.57
-0.57
-0.53
-0.40
-0.53
-0.35
5623
-0.50
-0.58
-0.70
-0.60
-0.53
-0.50
-0.45
-0.50
-0.30
5957
-0.50
-0.52
-0.70
-0.60
-0.55
-0.50
-0.30
-0.45
-0.27
6310
-0.53
-0.40
-0.50
-0.50
-0.43
-0.50
-0.30
-0.40
-0.25
6683
-0.45
-0.30
-0.42
-0.48
-0.30
-0.40
-0.20
-0.30
-0.20
7079
-0.30
-0.20
-0.35
-0.37
-0.30
-0.30
-0.13
-0.30
-0.03
7499
-0.40
-0.33
-0.40
-0.50
-0.50
-0.40
-0.32
-0.40
-0.20
7943
-0.63
-0.62
-0.70
-0.85
-0.68
-0.70
-0.58
-0.70
-0.55
8414
-0.60
-0.70
-0.50
-0.92
-0.85
-0.88
-0.70
-0.87
-0.62
8913
-0.80
-0.90
-0.70
-1.10
-1.00
-0.90
-0.68
-0.90
-0.70
9441
-0.72
-0.95
-0.73
-1.00
-1.00
-0.80
-0.65
-0.80
-0.53
10000
-0.75
-0.90
-0.80
-1.08
-0.95
-0.75
-0.70
-0.75
-0.50
10593
-0.75
-1.03
-0.83
-1.15
-1.00
-0.88
-0.80
-0.82
-0.57
11220
-0.75
-1.20
-1.00
-1.20
-1.30
-1.22
-1.10
-1.10
-0.88
11885
-1.28
-1.18
-1.45
-1.45
-1.70
-1.60
-1.50
-1.42
-1.20
12589
-1.73
-1.40
-1.80
-1.85
-2.10
-1.83
-1.72
-1.72
-1.45
13335
-1.63
-1.18
-1.80
-1.35
-1.85
-1.43
-1.40
-1.27
-1.02
14125
-1.20
-1.00
-1.90
-1.03
-2.00
-1.20
-1.22
-1.10
-1.02
14962
-1.17
-1.55
-1.90
-1.55
-2.47
-1.70
-1.78
-1.63
-1.60
15849
-1.85
-2.40
-2.45
-2.15
-2.83
-2.48
-2.45
-2.22
-2.20
16788
-1.90
-2.48
-1.85
-1.75
-2.08
-2.05
-1.93
-1.55
-1.47
17783
-2.05
-1.75
-0.65
-1.53
-2.20
-1.77
-1.50
-1.12
-1.20
18836
-2.32
-1.50
-1.45
-2.58
-3.20
-2.78
-2.55
-2.40
-2.35
19953
-1.81
-2.78
-3.45
-2.88
-4.51
-2.97
-3.39
-2.95
-2.17
1. Note: These values represent the typical effect of the WS001 windscreen on the acoustic response of the 821/
721 sound level meter. They may be subtracted from a measured value to correct for the windscreen effect..
TABLE B.4
Directional Response (from 100° to 180°) of 3 ½-inch Windscreen (Continued)
Frequency (Hz)
Angle from Reference Direction (Degrees)
1
100°
110°
120°
130°
140°
150°
160°
170°
180°
