Mitsubishi Electric PUH-P1.6VGA, Technical & Service Manual, Page: 9 / 34

9
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PUH-P1.6VGA
COOLING
NOTCH
HEATING
46
SPL(db
(A)
)
48
LINE
3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db
(A)
) LINE
PUH-P2VGA
48
49
90
80
70
60
50
40
30
20
10
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
COOLING
NOTCH
HEATING
SPL(db
(A)
) LINE
PUH-P2.5VGA
48
50
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db
(A)
) LINE
49
51
PUH-P3VGA/YGA