Noise Criteria Curves - Mitsubishi Electric MSC-GA20VB- E1 Service Manual

NOISE CRITERIA CURVES

4
MSC-GA20VB-
E1
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MSC-GA35VB-
E1
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB ) LINE
FAN SPEED FUNCTION
(A)
COOLING
High 36
HEATING
Test conditions,
Cooling : DB27: WB19:
Heating : DB20: WB -:
500 1000 2000 4000 8000
SPL(dB ) LINE
FAN SPEED FUNCTION
(A)
COOLING 40
High
HEATING 39
Test conditions.
Cooling : DB27: WB19:
Heating : DB20: WB -:
500 1000 2000 4000 8000
MSC-GA25VB-
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63
NC-70
NC-60
NC-50
INDOORUNIT
NC-40
1m
NC-30
0.8m
NC-20
MICROPHONE
6
E1 FAN SPEED FUNCTION
COOLING
High
HEATING
Test conditions.
Cooling : DB27:
Heating : DB20:
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
WALL
SPL(dB ) LINE
(A)
36
39
WB19:
WB -:
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000