Mitsubishi Electric Lossnay series Technical Manual page 58

LGH-F1200RX -E
5
Background noise : 25 dB or less (A range)
Measurement site : Anechoic chamber
Operation conditions : Lossnay ventilation
Power supply : 208 V 60 Hz
90
85
80
75
70
65
60
55
Extra
high
50
High
45
Low
40
35
30
25
20
15
10
Overall 62.5 125 250 500
Octave band frequency near center (Hz)
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
1K 2K 4K 8K
CHAPTER 4
Background noise : 25 dB or less (A range)
Measurement site : Anechoic chamber
Operation conditions : Lossnay ventilation
Power supply : 230 V 60 Hz
90
85
80
75
70
65
60
Extra
55
high
High
50
45
Low
40
35
30
25
20
15
NC-10
10
Overall 62.5 125 250 500 1K
Octave band frequency near center (Hz)
•
Characteristics
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
2K 4K 8K
U-49