CESVA SC-30, Руководство пользователя, Страница: 39 / 76

SC-30
User’s Manual
37
FREQUENCY WEIGHTING
A C Z
For C-250 + PA-14:
Primary Range
Upper limit
Lower limit
Measurement Range (with nominal sensitivity of the
microphone) at 1kHz:
Upper limit
Upper limit for crest factor 3:
Upper limit for crest factor 5:
Upper limit for crest factor 10:
Lower limit
Electrical Noise (with nominal sensitivity of the microphone)
Maximum
Typical
Total Noise at 20ºC (elec thermic of the microphone)
Maximum
Typical
120.0
50.0
137.0
130.0
126.0
120.0
22.0
14.5
8.6
19.3
16.9
120.0
50.0
137.0
130.0
126.0
120.0
23.0
22.0
8.8
23.3
16.9
120.0
50.0
137.0
130.0
126.0
120.0
27.0
22.5
15.4
24.0
21.9
L
peak
Function
Lower limit of the indicator:
Upper limit of the indicator:
Operating limits are modified by the sensitivity of the microphone.
0 dB
140.0 dB
Linear measurement range with C-130 and C-250
Upper limit
Lower limit
140.0 dB
55.0 dB
5.2 Detector - Functions L
F
, L
S
and L
I
For electrical calibration, use the ADM0C130 adapter.
Maximum error in the maximum response to a tone burst
Function Duration of the tone burst (ms) Maximum error (dB)
L
F
200 ± 1.0
L
S
500 ± 1.0
L
I
20
5
2
± 1.5
± 2.0
± 2.0
Maximum error for signals with crest factor
≤
3:
± 0.5 dB
Maximum error for signals with crest factor
≤
5:
± 1.0 dB
Maximum error for signals with crest factor
≤
10:
± 1.5 dB