Nc Curves - Mitsubishi Electric Lossnay series Technical Manual

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CHAPTER 4 Characteristics

5. NC Curves

LGH-F300RX -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
50
45
Extra
high
40
High
35
Low
30
25
Extra
20
Low
15
10
Overall 62.5 125 250 500
Octave band frequency near center (Hz)
LGH-F470RX -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
50
Extra
45 high
High
40
Low
35
30
Extra
25
Low
20
15
10
Overall 62.5 125 250 500
Octave band frequency near center (Hz)
LGH-F600RX -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
50
45
Extra
high
40
High
35
Low
30
Extra
25
Low
20
15
10
Overall 62.5 125 250 500
Octave band frequency near center (Hz)
U-48
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
1K 2K 4K 8K
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
1K 2K 4K 8K
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
1K 2K 4K 8K
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
55
50
Extra
45 high
High
40
Low
35
30
25 Extra
Low
20
NC-20
15
NC-10
10
Overall 62.5 125 250 500 1K
Octave band frequency near center (Hz)
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
55
50 Extra
high
45
High
40
Low
35
30
Extra
25 Low
NC-20
20
15
NC-10
10
Overall 62.5 125 250 500 1K
Octave band frequency near center (Hz)
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
55
50
Extra
45 high
High
40
Low
35
30
Extra
Low
25
NC-20
20
15
NC-10
10
Overall 62.5 125 250 500 1K
Octave band frequency near center (Hz)
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
2K 4K 8K
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
2K 4K 8K
1.5 m below
Measurement
point
NC-70
NC-60
NC-50
NC-40
NC-30
2K 4K 8K