Svantek SV 973, Руководство пользователя

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SVAN 973 User Manual
– Appendixes
181
C.4 S
PECIFICATION OF
SV 973
AS
1/1 O
CTAVE AND
1/3 O
CTAVE ANALYZER
Statement of performance
SV 973 can operate as 1/1-octave or 1/3-octave analyser which meets requirements of the international
IEC 61260-1:2014 standard for the pass band filters for the Class 1 instruments. For sound analysis, its
accuracy results from the accuracy of the Sound Level Meter - see Chapters C.1 for specification.
Note: Simultaneously to the frequency analysis SV 973 operates as a Sound Level Meter - see
Chapters C.1 for specification.
Signal input
SV 973 microphone input throughout the SL 973 adapter
Maximum input voltage:
SV 973 meets the requirements of IEC 348 for the 2nd Class
devices. The input voltage shall not exceed the limits
between 0 V and +3 V.
SL 973 the input voltage shall not exceed the limits between -3 V
and +3 V.
Impedance:
SV 973
differential input: ≤ 94 k

, ≤ 50 pF each.
SL 973
≤ 10900

, ≤ 30 pF, single ended input.
Linear Operating Range
Table C.14 Linear operating range with SL 973
Weighting
Linear operating range (with 10 dB margin from noise)
( RMS for the sinusoidal signal at reference conditions @ 1 kHz,
0.0 dB calibration factor)
A
from 20.2 µV
RMS
to 1135 mV
RMS
B
from 20.2 µV
RMS
to 1135 mV
RMS
C
from 20.2 µV
RMS
to 1135 mV
RMS
Z
from 63.8 µV
RMS
to 1135 mV
RMS
Table C.15 Peak for the sinusoidal signal 1 kHz, at reference conditions with SL 973 (@ 128 dB Peak
indication)
Peak for the sinusoidal signal 1 kHz , at reference conditions
@ 1 kHz (0.0 dB calibration factor)
Weighting
Max Peak value
A
1.605 V
B
1.605 V