Panasonic U-26PE1U6 Technical Data & Service Manual page 84

1-8. Noise Criterion Curves
Ceiling (Type T1)
MODEL : S-26PT1U6
SOUND LEVEL : HIGH 40 dB(A), NC 34
CONDITION : Distance 3.3 ft., Under the unit 3.3 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
1
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
MODEL : S-42PT1U6
SOUND LEVEL : HIGH 47 dB(A), NC 40
CONDITION : Distance 3.3 ft., Under the unit 3.3 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
LOW 36 dB(A), NC 26
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
LOW 38 dB(A), NC 32
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
MODEL
SOUND LEVEL : HIGH 46 dB(A), NC 39
CONDITION
SOURCE
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63
BAND CENTER FREQUENCIES, Hz
1221_X_I
2114_X_I
1-76
1. Specifications
: S-36PT1U6
LOW 37 dB(A), NC 31
: Distance 3.3 ft., Under the unit 3.3 ft.
: 208 - 230 V, 1 Phase, 60 Hz
125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
2113_X_I