Polytec PSV 300, Hardware Manual

Page: 67 / 105

   
                                      
   
       
     
With the low pass filter switched off, the velocity decoder behaves as a system of With the low pass filter switched off, the velocity decoder behaves as a system of
constant time delay up to approximately 60% of the maximum frequency of the
constant time delay up to approximately 60% of the maximum frequency of the
measurement range set, i.e. the phase shift is proportional to the frequency. The
measurement range set, i.e. the phase shift is proportional to the frequency. The
phase shift depends, however, on the range settings.
phase shift depends, however, on the range settings.
Maximum linearity error: Maximum linearity error:
±±
1% of rms. reading (one particular range) 1% of rms. reading (one particular range)
±±
2.5% of rms. reading (overall) 2.5% of rms. reading (overall)
Linearity error is defined as the amplitude-dependent, relative devi Linearity error is defined as the amplitude-dependent, relative deviation of the scaling ation of the scaling
factor referred to the nominal scaling factor under calibration conditions. factor referred to the nominal scaling factor under calibration conditions.
Velocity Velocity
decoder decoder
Measurement range Measurement range
Max. additional error referred to f = 1kHz Max. additional error referred to f = 1kHz
PLL-DC PLL-DC
1 1
1 1
The measurement ranges of this decoder can be used from the frequency 0Hz (full DC capability). The measurement ranges of this decoder can be used from the frequency 0Hz (full DC capability).
1 1 0 0
15 15
Hz Hz
kHz kHz
--
-- 15 15
20
20
k H k Hz z ::
k H k Hz z ::
±±
0.1dB 0.1dB
++
0.1dB/ 0.1dB/
−−
0.25dB 0.25dB
5 5 a an nd d 2 25 5 0 0
20 20
Hz Hz
kHz kHz
--
-- 20 20
50
50
k H k Hz z ::
k H k Hz z ::
±±
0.1dB 0.1dB
±±
0.2dB 0.2dB
O OV VD D--0 04 4 1 10 0 0 0..5 5
10 10
20
20
100 100
Hz Hz
Hz
Hz
kHz kHz
kHz
kHz
--
--
--
-- 10 10
20
20
100 100
200
200
Hz Hz ::
k H k Hz z ::
k H k Hz z ::
k H k Hz z ::
±±
0.5dB 0.5dB
±±
0.05dB 0.05dB
++
0.05dB/ 0.05dB/
−−
0.2dB 0.2dB
++
0.05dB/ 0.05dB/
−−
1dB 1dB
2 25 5, , 1 12 25 5 a an nd d 1 0 1 00 00 0 0 0..5 5
10 10
20
20
100 100
200
200
Hz Hz
Hz
Hz
kHz kHz
kHz
kHz
kHz
kHz
--
--
--
--
-- 10 10
20
20
100 100
200
200
1 1
Hz Hz ::
k H k Hz z ::
k H k Hz z ::
k H k Hz z ::
M MH Hz z ::
±±
0.5dB 0.5dB
±±
0.05dB 0.05dB
±±
0.15dB 0.15dB
±±
0.3dB 0.3dB
±±
0.8dB 0.8dB
2 2
2 2
PSV 300-F only PSV 300-F only
Velocity Velocity
decoder decoder
Measurement Measurement
range range
Time delay (typ.) Time delay (typ.)
Specific phase roll-off p Specific phase roll-off p
s s
(typ.) (typ.)
--H H, , --U U --F F --H H, , --U U --F F
µ µ
s s
µ µ
s s °°// k kH Hz z °° // k kH Hz z
P PL LL L--D DC C 1 1 2 24 4 2 24 4
−−
8.6 8.6
−−
8.6 8.6
5 5 7 7..1 1 7 7..1 1
−−
2.6 2.6
−−
2.6 2.6
2 25 5 6 6..0 0 6 6..0 0
−−
2.2 2.2
−−
2.2 2.2
O OV VD D--0 04 4 1 10 0 6 6..1 1 6 6..1 1
−−
2.2 2.2
−−
2.2 2.2
2 25 5 5 5..5 5 1 1..9 9
−−
2.0 2.0
−−
0.7 0.7
1 12 25 5 5 5..5 5 1 1..9 9
−−
1.9 1.9
−−
0.7 0.7
1 10 00 00 0 3 3..5 5 0 0..9 9
−−
1.3 1.3
−−
0.33 0.33
mm mm
s s
---------- ---------- V V
mm mm
s s
---------- ----------
V V