Technical Data Book

B-198
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
Approximate
minimum
audible limit on
continuous noise
Octave band pressure level (dB) 0dB = 20μPa
Octave band center frequencies <Hz>
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
MVZ-A36AA7
External Static Pressure: 75Pa
High
Condition
Middle
Low
41.0
A scale
37.0
33.0
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
Approximate
minimum
audible limit on
continuous noise
Octave band pressure level (dB) 0dB = 20μPa
Octave band center frequencies <Hz>
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
MVZ-A36AA7
External Static Pressure: 125Pa
High
Condition
Middle
Low
43.0
A scale
39.0
35.0
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
Approximate
minimum
audible limit on
continuous noise
Octave band pressure level (dB) 0dB = 20μPa
Octave band center frequencies <Hz>
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
MVZ-A36AA7
External Static Pressure: 200Pa
High
Condition
Middle
Low
45.0
A scale
41.0
37.0
LINE
Front side
Aux. duct
Aux. duct
39-3/8 inch
(1 m)
39-3/8 inch
(1 m)
39-3/8 inch
(1 m)
78-3/4 inch
(2 m)
Measurement location