7-5
7 Technical Specifications
7.1.5 Signal Voltage Output DISPLACEMENT OUTPUT (optional)
General Data
Measurement Ranges
Calibration Accuracy
Amplitude Linearity
Voltage swing:
16 V
p-p
Output impedance:
50
Ω
Minimum load resistance:
10 k
Ω
(
−
0.5 % additional error)
Displacement
decoder
Measurement
range
(scaling factor)
Full scale
output
(peak - peak)
Resolution
1
Maximum
velocity
Bandwidth
Max. frequency
for specified
accuracy
µ
m/ V
µ
m
µ
m
m / s
kHz
kHz
OVD-10
20
320
0.08
2.5
0 ... 250
100
80
1,280
0.32
10
0 ... 250
100
320
5,120
1.3
10
0 ... 250
100
1,280
20,480
5.0
10
0 ... 250
100
5,120
81,920
20
10
0 ... 250
100
OVD-20
0.5
8
0.002
0.06
0 ... 25
10
and
2
32
0.008
0.25
0 ... 75
15
OVD-40
8
128
0.032
1
0 ... 75
25
20
320
0.08
2.5
0 ... 250
100
80
1,280
0.32
10
0 ... 250
100
320
5,120
1.3
10
0 ... 250
100
1,280
20,480
5.0
10
0 ... 250
100
5,120
81,920
20
10
0 ... 250
100
1
The resolution is defined as 1 increment of the fringe counter output which is equivalent to a 4 mV output voltage step.
Amplitude error:
±
1% of rms reading
±
1 increment
Conditions:
Sinusoidal vibration, f = 100 Hz, amplitude 50% of full
scale range, load resistance
≥
1 M
Ω
Maximum linearity error:
Ranges 20
µ
m / V... 5,120
µ
m / V:
±
1 increment
Ranges 0.5
µ
m/ V... 8
µ
m / V:
±
2 increments
