Mitsubishi Heavy Industries FDTCVA SERIES Technical Manual page 142

(c) Ceiling suspended type (FDEN)
Measured based on JIS B 8616
Mike position as pen drawing
Models FDENA151R, 201R
Noise level 42 dB (A) at HIGH
39 dB (A) at MEDIUM
38 dB (A) at LOW
70
60
50
40
30
20
63 125 250 500 1000
Mid Octave Band Frequency (Hz)
Models FDENA501R, 601R
Noise level 48 dB (A) at HIGH
46 dB (A) at MEDIUM
44 dB (A) at LOW
70
60
50
40
30
20
63 125 250 500 1000
Mid Octave Band Frequency (Hz)
(d) Satellite ducted type (FDUM)
Measured based on JIS B 8616
Mike position as pen drawing
Models FDUMA202, 252R
Noise level 34 dB (A) at HIGH
31 dB (A) at MEDIUM
28 dB (A) at LOW
70
60
50
40
30
20
63 125 250 500 1000
Mid Octave Band Frequency (Hz)
Unit
Mike (in front & below unit)
Models FDENA251R, 301R
Noise level 44 dB (A) at HIGH
70 70
60 60
50 50
40 40
30 30
20 20
2000 4000 8000 63 125
Mid Octave Band Frequency (Hz)
70
60
50
40
30
20
2000 4000 8000
1.5 m
Model FDUMA302R
Noise level 35 dB (A) at HIGH
70 70
60 60
50 50
40 40
30 30
20 20
2000 4000 8000 63 125
Mid Octave Band Frequency (Hz)
1 m
41 dB (A) at MEDIUM
39 dB (A) at LOW
250 500 1000 2000 4000
Unit
Mike (at center & below unit)
32 dB (A) at MEDIUM
29 dB (A) at LOW
250 500 1000 2000 4000
141
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Model FDENA401R
Noise level 46 dB (A) at HIGH
44 dB (A) at MEDIUM
41 dB (A) at LOW
70 70
60 60
50 50
40 40
30 30
20 20
8000 63 125 250 500
Mid Octave Band Frequency (Hz)
Model FDUMA402R
Noise level 37 dB (A) at HIGH
35 dB (A) at MEDIUM
32 dB (A) at LOW
70 70
60 60
50 50
40 40
30 30
20 20
8000 63 125 250
Mid Octave Band Frequency (Hz)
70
60
50
40
30
20
1000 2000 4000 8000
70
60
50
40
30
20
500 1000 2000 4000 8000