Honda G100K2 Applications Manual page 38

LOCATION AND NUMBER OF MEASURING POINTS
In the hemispherical measuring surface, there shall be in principle 12 measuring points (a minimum of 6 points)
with the following coordinates:
x = (x / r) r
y = (y / r) r
z = (z / r) r
The values x/r, y/r, z/r and z are given in the table below :
coordinate
1
2
3
4
5
6
7
8
9
10
11
12
The radius depends on the dimensions of the sound source.
For example: generator
Radius Dimension of generator
4 m 0 – 1.5 m
10 m 1.5 – 4 m
16 m > 4 m
Model for
sound power
level mark
according to
EC-regulation
x / r y / r
1 0
0.7 0.7
0 1
- 0.7 0.7
- 1 0
- 0.7 - 0.7
0 - 1
0.7 - 0.7
0.65 0.27
- 0.27 0.65
- 0.65 - 0.27
0.27 - 0.65
Sound source
z / r
-
-
-
-
-
-
-
-
0.71
0.71
0.71
0.71
Hemispherical measuring surface
- 37 -
NOISE
z
1.5 m
1.5 m
1.5 m
1.5 m
1.5 m
1.5 m
1.5 m
1.5 m
-
-
-
-