Samsung Electronics DVM Series Technical Manual page 120

(4) Duct type (Built-in)
020
70.0
60.0
50.0
40.0
30.0
20.0
High
10.0
Low
0.0
63 125
032
70.0
60.0
50.0
40.0
30.0
20.0
High
10.0
Low
0.0
63 125
250 500 1000
Octave band center frequency(Hz)
250 500 1000
Octave band center frequency(Hz)
ΙΙΙ
61
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
2000 4000 8000
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
2000 4000 8000