Self-Generated Noise; Linear Operating Ranges; Level Linearity Range - SINUS Tango Plus Manual

If the device is exposed to mechanical vibration with an acceleration of 1 m/s perpendicular to the mem-
brane plane of the microphone, the lower limit of the linear operating range increases to 75 dB for the
frequencies 31,5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 630 Hz, 800 Hz and 1000 Hz, frequency weighting A.
If the device is exposed to mechanical vibration with an acceleration of 1 m/s parallel to the membrane
plane of the microphone, the lower limit of the linear operating range increases to 58 dB for the frequencies
31,5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 630 Hz, 800 Hz and 1000 Hz, frequency weighting A.

3.5 Self-generated noise

In a sound field with an insignificant contribution to the inherent noise, levels of
16
are to be expected.
CF
The electrical noise inherent in the preamplifier (terminated with spare capacity and
14
produce
AF max

3.6 Linear operating ranges

The operating ranges given below are only valid for calibrated devices! The starting value for each level
linearity test is 94 dB at 1 kHz.
Frequency max in dB(A) min in dB(A) Range in dB(A)
31,5 Hz 100
1 kHz 140
4 kHz 140
8 kHz 139
12,5 kHz 135
Table 3.9: Linear operating ranges A-weighted
Frequency max in dB(C) min in dB(C) Range in dB(C)
31,5 Hz 137
1 kHz 140
4 kHz 138
8 kHz 137
12,5 kHz 133
Table 3.10: Linear operating ranges C-weighted

3.6.1 Level linearity range

The following table 3.11 contains the measurement ranges for A-weighted sound levels and the C-weighted
peak sound level for microphone sensitivity of 50 mV/Pa.
Fast/Slow/Leq in dB(A) L
25. . . 140
Table 3.11: Level linearity ranges for A-weighted sound levels and C peak
Manual Tango_Plus
3 INFORMATION FOR TYPE APPROVAL
as well as
CF max
25 75
25 115
27 113
27 112
27 108
62 75
30 110
30 108
30 107
30 103
in dB(A) L in dB(C)
AE Cpeak
ab 25 37. . . 143
20
in the display device.
40 of 47
14
as well as
AF
50Ω
at the input) will
SINUS Messtechnik GmbH