Svantek SVAN 958A - Page 197

197
SVAN 958A User Manual
Values of the measured acceleration using the accelerometer with the nominal sensitivity equal to 1 mV/ms
-2
(e.g. 3023M2):
• Linear measurement with the Wh filter:
the linear operating ranges for the distance from noise > 6 dB
from 0.01 ms
-2
to 3520 ms
-2
(the sinusoidal signal RMS)
from 0.1 ms
-2
to 5000 ms
-2
(PEAK)
Table C.2.5. Linear operating ranges with the Wh filter
Range
Linear operating ranges
Low
from 10 mms
-2
(80.0 dB)
to 562 ms
-2
(175.0 dB)
High
from 100 mms
-2
(100.0 dB)
to 3520 ms
-2
(191.0 dB)
• Linear measurement with the HP1 filter:
the linear operating ranges for the distance from noise > 6 dB
from 0.03 ms
-2
to 3520 ms
-2
(the sinusoidal signal RMS)
from 0.3 ms
-2
to 5000 ms
-2
(PEAK)
Table C.2.6. Linear operating ranges with the HP1 filter
Range
Linear operating ranges
Low
from 31.6 mms
-2
(90.0 dB)
to 562 ms
-2
(175.0 dB)
High
from 316 mms
-2
(110.0 dB)
to 3520 ms
-2
(191.0 dB)
• Linear measurement with the HP3 filter:
the linear operating ranges for the distance from noise > 6 dB
from 0.01 ms
-2
do 3520 ms
-2
(the sinusoidal signal RMS)
from 0.1 ms
-2
do 5000 ms
-2
(PEAK)
Table C.2.7. Linear operating ranges with the HP3 filter
Range
Linear operating ranges
Low
from 10 mms
-2
(80.0 dB)
to 562 ms
-2
(175.0 dB)
High
from 100 mms
-2
(100.0 dB)
to 3520 ms
-2
(191.0 dB)
• Linear measurement with the HP10 filter:
the linear operating ranges for the distance from noise > 6 dB
from 0.005 ms
-2
to 3520 ms
-2
(the sinusoidal signal RMS)
from 0.1 ms
-2
to
5000 ms
-2
(PEAK)
Table C.2.8. Linear operating ranges with the HP10 filter
Range
Linear operating ranges
Low
from 5 mms
-2
(74.0 dB)
to 562 ms
-2
(175.0 dB)
High
from 100 mms
-2
(100.0 dB)
to 3520 ms
-2
(191.0 dB)
Note: In the measurement of the signal with the crest factor n > 1.41 the upper linear
operating range for the RMS value is reduced. Its value can be calculated from the equation:
A
n
= A +10 - 20log (n / ) [m], where A is the given range for the sinusoidal signal. E.g. for
n = 10 and A = 140 the value of A
10
is equal to = 133 dB.
2