Svantek SV 977D User Manual

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SV 977D User Manual - Appendixes
Table C.3.5. Linear operating ranges with the Wh filter
Range (RMS)
Linear operating ranges (RMS)
With the SV 80 (10 mV/ms
-2
) accelerometer sensitivity @ 79.58 Hz
Measured at the ref. environmental conditions, at 12.5 Hz sine
signal
Low
from 20.2 µV (66.1 dB)
to 957 mV (159.6 dB)
High
from 202 µV (86.1 dB)
to 3.39 V (170.6 dB)
Table C.3.6. Linear operating ranges with the HP, HP1, HP3 and HP10 filters
Range (RMS)
Linear operating ranges (RMS)
With the SV 80 (10 mV/ms
-2
) accelerometer sensitivity @ 79.58 Hz
Measured at the ref. environmental conditions, at 80 Hz sine signal
Low
from 100 µV (80 dB)
to 1.0 V (160 dB)
High
from 1.0 mV (100 dB)
to 3.54 V (171 dB)
Table C.3.7. Peak for the sinusoidal signal 1 kHz, at reference conditions
Peak for the sinusoidal signal 1 kHz, at reference
conditions @ 1 kHz (0.0 dB calibration factor)
Range
Max Peak value
Low
1.35 V “Wh” – weighting
1.41 V “HP” – weighting
1.41 V “HP1” – weighting
1.41 V “HP3” – weighting
1.41 V “HP10” – weighting
High
4.78 V “Wh” – weighting
4.99 V “HP” – weighting
4.99 V “HP1” – weighting
4.99 V “HP3” – weighting
4.99 V “HP10” – weighting
Note: For the signals with the crest factor n >1.41 upper measuring range of the RMS is reduced.
The valid upper limit can be calculated according to the below given formula:
An dB(re1µV) = A dB(re1µV) – 20log(n/√2),
where A is the upper limit for the sinusoidal signal in dB(re1µV)
Example: For the crest factor n = 10 the upper limit is A
10
= 120 dB(re1µV)
Measuring frequency range 0.35 Hz ÷ 22.4 kHz with the HP filter (-3 dB)
Measuring frequency range 0.35 Hz ÷ 44.6 kHz with the HPE filter (-3 dB)

Svantek SV 977D Specifications

General

Brand	Svantek
Model	SV 977D
Category	Measuring Instruments
Language	English