Larson Davis HVM200, Reference Manual

Page: 41 / 77

HVM200 Reference Manual A-6
Anti-alias Filter Performance
The anti-alias filter attenuates all frequencies
above the stop band frequency at 100 dB.
Sample Rate : 7161.45833 Hz
Stop Band Frequency
: 3917.318 Hz
Stop Band Rejection
: 100 dB
Pass Band -3db Frequency
: 3509.115
Pass Band Frequency
: 3244.141
A.5 Reference Values
The following values represent the primary
frequencies and amplitudes at which weighting
filters are specified and tested.
A.6 Measurement Ranges
The following table shows the HVM200 dynamic
and linearity ranges in root-mean square values.
(Peak values are 1.414 times higher.)
Operating
Mode
Frequency Weighting Reference Frequency
Reference
Amplitude
Vibration Fa (0.4 Hz to 100 Hz)
Fb (0.4 Hz to 1250 Hz)
Fc (6.3 Hz to 1250 Hz)
50 rad/s (7.958 Hz)
500 rad/s (79.58 Hz)
500 rad/s (79.58 Hz)
10 m/s
2
10 m/s
2
10 m/s
2
Hand Arm Wh 500 rad/s (79.58 Hz) 10 m/s
2
Whole Body Wm
Wb
Wc
Wd
We
Wj
Wk
Wf (Severity)
100 rad/s (15.915 Hz)
2.5 rad/s (0.3979 Hz)
1.0 m/s
2
1.0 m/s
2
1.0 m/s
2
1.0 m/s
2
1.0 m/s
2
1.0 m/s
2
1.0 m/s
2
0.1m/s
2
Frequency
Weighting
Noise Floor
(typical mV)
Lower Limit
(Under-range
mV)
Lower Limit
Linearity
Range
(typical mV)
Lower Limit
Linearity
Range
(maximum
mV)
Upper Limit
(Overload V)
Fa 0.028 0.204 0.092 0.178 5.01
Fb 0.046 0.232 0.133 0.176 5.01
Fc 0.041 0.205 0.116 0.152 5.01
Wb 0.016 0.167 0.073 0.137 5.01
Wc 0.021 0.184 0.089 0.150 5.01
Wd 0.014 0.181 0.072 0.175 5.01
We 0.012 0.193 0.073 0.161 5.01
Wf 0.009 0.185 0.100 0.147 5.01
Wh 0.014 0.087 0.042 0.090 5.01
Wj 0.023 0.167 0.077 0.151 5.01