Polytec OFV-303 - Page 65

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Velocity decoder
Maximum linearity error
1
1
Linearity error is defined as the amplitude-dependent, relative deviation of the scale factor
referred to the scale factor under calibration conditions.
One particular range Overall
% of rms reading % of rms reading
OVD-01 ± 0.5 ± 1.0
OVD-02 ± 1.0 ± 2.5
Velocity decoder
Measurement range
Max. additional error referred to f = 1kHz
OVD-01 1 0.5
10
15
Hz
Hz
kHz
-
-
-
10
15
20
Hz :
kHz :
kHz :
± 0.5dB
± 0.1dB
+ 0.1dB/ − 0.25dB
5 and 25 0.5
10
20
Hz
Hz
kHz
-
-
-
10
20
50
Hz :
kHz :
kHz :
± 0.5dB
± 0.1dB
± 0.2dB
125 and 1,000
1
1
These two measurement ranges can be used from the frequency 0Hz (full DC capability).
0
20
Hz
kHz
-
-
20
50
kHz :
kHz :
± 0.1dB
± 0.2dB
OVD-02 5 0.5
10
100
Hz
Hz
kHz
-
-
-
10
100
250
Hz :
kHz :
kHz :
± 0.5dB
± 0.1dB
+ 0.1dB/ − 1dB
25; 125 and 1,000 0.5
10
250
Hz
Hz
kHz
-
-
-
10
250
1.5
Hz :
kHz :
MHz:
± 0.5dB
± 0.1dB
+ 0.5dB/ − 1dB
mm
s
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