Svantek SV 973 User Manual

SVAN 973 User Manual – Appendixes
164
Periodical test upper frequency 8 kHz
Linear Operating Ranges
Table C.7 Linear operating ranges for the sinusoidal signal and microphone sensitivity 1.8 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
50
98
55
121
55
135
70
138
50
98
55
121
55
135
53
101
83
138
500 Hz
50
134
55
137
55
138
70
138
50
134
55
137
55
138
53
137
83
141
1 kHz
50
138
55
138
55
138
70
138
50
138
55
138
55
138
53
141
83
141
4 kHz
50
139
55
137
55
137
70
138
50
139
55
137
55
137
53
142
83
140
8 kHz
50
137
55
135
55
135
70
138
50
137
55
135
55
135
53
140
83
138
12.5 kHz
50
133
55
132
55
132
70
138
50
133
55
132
55
132
53
136
83
135
Note: For signals with the crest factor n > 1.41 upper measuring range of the RMS (LEQ
and SPL) is reduced. The valid upper limit can be calculated according to the below given
formula:
𝑨𝒏 = 𝟏𝟑𝟖 − 𝟐𝟎𝒍𝒐𝒈(𝒏/
√
𝟐 ), where A is the upper limit for the sinusoidal signal
Example: For the crest factor n = 10 the upper limit is A
10
= 121 dB
The starting point at which tests of level linearity shall begin 114.0 dB (94 dB for A filter @ 31.5 Hz).
Measuring frequency range of the acoustic pressure (-3 dB) 20 Hz ÷ 10 000 Hz.
Basic measurement error of the acoustic pressure < 0.7 dB (measured for the reference
conditions, see below).
Weighting filters (see part C.3)
Z according to IEC 61672-1:2013 for Class 2
A according to IEC 651 and IEC 61672-1:2013 for Class 2
B according to IEC 651 and IEC 61672-1:2013 for Class 2
C according to IEC 651 and IEC 61672-1:2013 for Class 2
Table C.8 Self-generated noise for different weighting filters
Electrical *)
Acoustical compensated
Weighting filter
A
C
Z
A
C
Z
Noise
< 40 dB
< 40 dB
< 50 dB
< 43 dB
< 48 dB
< 63 dB
*) measured with the SL 973 microphone equivalent

Svantek SV 973 Specifications

General

Brand	Svantek
Model	SV 973
Category	Measuring Instruments
Language	English