Svantek SV 971A User Manual

SV 971A User Manual – Appendixes
210
SV 971A Diffuse Field compensation filter
Note: Using special filters might change the frequency response and measuring ranges of
SV 971A. Please check the below given specification.
Linear operating ranges for LEQ measurements with the Diffuse Field filter
The starting point at which tests of level linearity shall begin is 94.0 dB for the frequencies specifies below. For
the Low measurement range and A weighting linearity test at 31.5 Hz, the starting point is 79 dB.
Table C.1.4. Linear operating ranges for the Normal measurement range for the Diffuse Field filter (for
the sinusoidal signal and microphone sensitivity in the range 32 mV/Pa)
[dB]
L
AS/F
L
BS/F
L
CS/F
L
ZS/F
L
AeqT
L
BeqT
L
CeqT
L
AE
L
Cpeak
(t
int
= 2 s)
from
to
from
to
from
to
from
to
from
to
from
to
from
to
from
to
from
to
31.5 Hz
28
97
28
120
28
134
35
137
28
97
28
120
28
134
31
100
53
137
500 Hz
28
133
28
136
28
137
35
137
28
133
28
136
28
137
31
136
53
140
1 kHz
28
137
28
137
28
137
35
137
28
137
28
137
28
137
31
140
53
140
4 kHz
28
138
28
136
28
136
35
137
28
138
28
136
28
136
31
141
53
139
8 kHz
28
136
28
134
28
134
35
137
28
136
28
134
28
134
31
139
53
137
12.5 kHz
28
132
28
131
28
131
35
137
28
132
28
131
28
131
31
135
53
134
Table C.1.5. Linear operating ranges for the Low measurement range for the Diffuse Field filter (for the
sinusoidal signal and microphone sensitivity in the range 32 mV/Pa)
[dB]
L
AS/F
L
BS/F
L
CS/F
L
ZS/F
L
AeqT
L
BeqT
L
CeqT
L
AE
L
Cpeak
(t
int
= 2 s)
from
to
from
to
from
to
from
to
from
to
from
to
from
to
from
to
from
to
31.5 Hz
25
83
25
106
25
120
33
123
25
83
25
106
25
120
28
86
50
123
500 Hz
25
119
25
122
25
123
33
123
25
119
25
122
25
123
28
122
50
126
1 kHz
25
123
25
123
25
123
33
123
25
123
25
123
25
123
28
126
50
126
4 kHz
25
124
25
122
25
122
33
123
25
124
25
122
25
122
28
127
50
126
8 kHz
25
122
25
120
25
120
33
123
25
122
25
120
25
120
28
125
50
123
12.5 kHz
25
118
25
117
25
117
33
123
25
118
25
117
25
117
28
121
50
120

Svantek SV 971A Specifications

General

Brand	Svantek
Model	SV 971A
Category	Measuring Instruments
Language	English