370
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Frequency(Hz)
Octave Band Sound Pressure Level(dB)(OdB=0.0002μbar)
S-45NA1E5(230V)
Octave Band Central Frequency(Hz)
NC-40
NC-50
NC-30
NC-20
H ○━━○
M △━━△
L □━━□
H
M
L
NC-60
50HzFrequency
H
40 3239
M L
38
37
4244
Fan Speed
Back Ground Noise12dB
C-scale(dB)
A-scale(dB)
C-scale(dB)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Frequency(Hz)
Octave Band Sound Pressure Level(dB)(OdB=0.0002μbar)
S-56NA1E5(230V)
Octave Band Central Frequency(Hz)
NC-40
NC-60
NC-50
NC-30
NC-20
H ○━━○
M △━━△
L □━━□