131
SV
104BIS User Manual
Time weighting characteristics
(Exponential averaging)
Slow
“
S
“ according to IEC
61672-1:2013 Class 2, Equivalent Time Constant 1000 ms
Fast
“
F
” according to IEC
61672-1:2013 Class 2, Equivalent Time Constant 125 ms
Impulse
“
I
” according to IEC
61672-1:2013 Class 2, Equivalent Time Constant 35 ms, Hold Time
1500 ms
Reference conditions as per IEC 61252
Class of the acoustic field
Free field
Reference acoustic pressure
114.0 dB (related to 20
Pa)
Reference integration time
1 min
Reference noise exposure level
1.67 Pa
2
h
Reference frequency
1000 Hz
Reference temperature
+20°C
Reference relative humidity
65 %
Reference static pressure
1013 hPa
Reference incidence direction
perpendicular to the microphone diaphragm
Calibration
Acoustical
-
with
the
SV 34B
sound calibrator
(or equivalent):
•
Calibration level for the pressure field
114.0 dB (equal to the calibrator pressure level - see
calibration chart of the used calibrator)
•
Calibration level for the Free Field
113.87 dB (equal to the calibration level for the pressure
field minus Free Field correction of ST 104B at 1000 Hz -
see Table C.1.3)
Note:
The above levels correspond to 114 dB of calibrator’s sound pressure. If the calibrator has
a different sound pressure than 114 dB, the calibration levels must be accordingly adjusted.
Maximum peak voltage
3 V Peak-Peak
Maximum peak voltage of input sinusoidal signal, which can be led to the electrical input without destruction
to the meter.
Warm-up time:
1 minute (for 0.1 dB accuracy)
Typical stabilization time after change the temperature in environmental conditions by 20
C is 1 hour.
Nominal delay
1 second
Delay between operating of the "Reset-Button" and beginning of a new measurement.
Time shift after completion of a measurement
, before a measurement is shown: < 1 second.
Note:
When the instrument is moved from a warm environment with high humidity,
to a colder environment, care should be taken to avoid condensation inside
the instruments. In such case, much longer stabilization periods may be necessary.
Содержание SV 104BIS
Страница 139: ...139 SV104BIS User Manual 250 Hz 315 Hz 400 Hz 500 Hz...
Страница 140: ...140 SV104BIS User Manual 630 Hz 800 Hz 1000 Hz 1250 Hz...
Страница 141: ...141 SV104BIS User Manual 1600 Hz 2000 Hz 2240 Hz 2500 Hz...
Страница 142: ...142 SV104BIS User Manual 2800 Hz 3150 Hz 3550 Hz 4000 Hz...
Страница 143: ...143 SV104BIS User Manual 4500 Hz 5000 Hz 5600 Hz 6300 Hz...
Страница 144: ...144 SV104BIS User Manual 7100 Hz 8000 Hz 8500 Hz 9000 Hz...
Страница 148: ...148 SV104BIS User Manual Figure C 4 Total directional characteristics asymmetrical axis...
Страница 150: ...150 SV104BIS User Manual 630 Hz 800 Hz 1000 Hz 1250 Hz...
Страница 151: ...151 SV104BIS User Manual 1600 Hz 2000 Hz 2240 Hz 2500 Hz...
Страница 152: ...152 SV104BIS User Manual 2800 Hz 3150 Hz 3550 Hz 4000 Hz...
Страница 153: ...153 SV104BIS User Manual 4500 Hz 5000 Hz 5600 Hz 6300 Hz...
Страница 154: ...154 SV104BIS User Manual 7100 Hz 8000 Hz 8500 Hz 9000 Hz...
Страница 161: ...161 SV104BIS User Manual 1 0 kHz 1 1 octave filter 500 Hz 1 1 octave filter 250 Hz 1 1 octave filter...
Страница 162: ...162 SV104BIS User Manual 125 Hz 1 1 octave filter 63 0 Hz 1 1 octave filter 31 5 Hz 1 1 octave filter...
Страница 166: ...166 SV104BIS User Manual 1 3 octave filters for 16 0 Hz 1 1 octave filter...
Страница 180: ...180 SV104BIS User Manual...