Spartan 821/721 Manual IEC 61672-1 Section 9.3 B-10
11885
-0.53 -0.58 -0.73 -0.87 -0.78 -0.80 -0.90 -0.80 -1.00 -0.98
12589
-1.05 -1.03 -1.03 -1.00 -1.10 -1.07 -1.10 -1.20 -1.28 -1.42
13335
-0.70 -0.65 -0.70 -0.88 -0.95 -1.03 -1.12 -1.15 -1.20 -1.35
14125
-0.71 -0.80 -0.78 -0.83 -0.93 -0.97 -1.05 -1.17 -1.20 -1.48
14962
-0.98 -1.08 -1.03 -1.02 -1.00 -1.08 -1.10 -1.10 -1.47 -1.47
15849
-1.40 -1.40 -1.40 -1.30 -1.23 -1.40 -1.22 -1.50 -1.75 -1.70
16788
-1.10 -1.00 -1.10 -1.20 -1.15 -1.22 -1.30 -1.47 -1.70 -1.60
17783
-1.13 -1.12 -1.10 -1.20 -1.30 -1.38 -1.55 -1.80 -1.90 -1.90
18836
-1.55 -1.65 -1.53 -1.42 -1.52 -1.57 -1.77 -1.90 -2.05 -2.20
19953
-1.58 -1.93 -1.73 -1.73 -2.13 -1.75 -1.69 -2.47 -2.30 -2.62
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
Frequency (Hz)
Angle from Reference Direction (Degrees)
1
100° 110° 120° 130° 140° 150° 160° 170° 180°
63
-0.12 -0.08 -0.08 -0.08 -0.07 -0.06 -0.08 -0.06 -0.10
79
-0.12 -0.08 -0.08 -0.08 -0.07 -0.06 -0.08 -0.06 -0.10
100
-0.12 -0.08 -0.08 -0.08 -0.07 -0.06 -0.08 -0.06 -0.10
126
-0.12 -0.08 -0.08 -0.08 -0.07 -0.06 -0.08 -0.06 -0.10
159
-0.12 -0.08 -0.08 -0.08 -0.07 -0.06 -0.08 -0.06 -0.10
200
-0.15 -0.10 -0.10 -0.10 -0.08 -0.07 -0.10 -0.08 -0.12
251
-0.15 -0.10 -0.10 -0.10 -0.08 -0.07 -0.10 -0.08 -0.12
316
-0.07 -0.10 -0.12 -0.05 -0.10 -0.07 -0.12 -0.10 -0.13
398
-0.13 -0.10 -0.05 -0.10 -0.10 -0.10 -0.08 -0.08 -0.13
501
-0.10 -0.10 -0.13 -0.10 -0.10 -0.12 -0.18 -0.10 -0.08
631
-0.08 -0.10 -0.12 -0.02 -0.05 -0.10 -0.10 -0.05 0.00
794
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1000
0.00 0.00 0.00 0.00 0.07 0.10 0.10 0.00 0.02
TABLE B.3 Directional Response (from 0° to 90°) of 3 ½-inch Windscreen (Continued)
Frequency (Hz)
Angle from Reference Direction (Degrees)
1
0° 10° 20° 30° 40° 50° 60° 70° 80° 90°
To Next Page
Loading...
