7-3
7 Technical Specifications
SYNC, AUX OUT
7.2.3 Metrological Properties
Table 7.1: Metrological properties of the DV-04 decoder (1 of 4)
Compatibility: TTL/CMOS
Output voltage HIGH: min. 2.5V (I
out
= 5mA)
Output voltage LOW: max. 0.5V (I
out
= 2mA)
Output resistance: 100Ω
Full scale value (peak)
125
mm/ s
Scaling of analog output
0.25 0.5 1.25
Frequency range
f
min
000Hz
f
max
10 20 50 kHz
Max. acceleration 6.4 25.6 160 g
Frequency response
1
1
The frequency response defines the frequency-dependent amplitude error, referred to the reference frequency of 1kHz.
±0.1 ±0.1 ±0.1 dB
Resolution
2
2
The noise-limited resolution is defined as the signal amplitude (rms) at which the signal-to-noise ratio is 0dB with 1 Hz spectral
resolution, measured in a distance of 1m on 13M Scotchlite™ Tape (retro-reflective film).
frequency-dependent
3
3
The attainable resolution is frequency-dependent and specified for frequencies above 10Hz. In the frequency range from
10Hz to 5kHz the specified decoder noise is superimposed by the scanner noise. The resolution is then between 0.1 and
1.0µm/s with 1Hz spectral resolution.
0.01 0.01 0.01
typically
4
4
The typical value refers to the center of the operating frequency range.
0.01 0.01 0.01
Calibration error analog
output
5
5
Conditions: sinusoidal vibration, f = 1kHz, amplitude 70% of full scale range, load resistance ≥ 1MΩ
T
a
= +5°C…+40°C
(T
a
= 41°F…104°F)
±1.0 ±1.0 ±1.0 %
Linearity error analog output
6
6
The linearity error is defined as the amplitude dependent, relative deviation of the scaling factor referred to the scaling factor
under calibration conditions (refer to footnote
5
).
0.5 0.5 0.5 %
Harmonic distortions –44 –46 – 48 dBc
Spurious signals (non-
harmonic)
7
7
The maximum amplitude of the distortion refers to the full scale. An exception of this is just a peak, generated by the optical
sensor in the frequency range 20…25kHz and its multiples, whose amplitudes depend on the stand-off distance.
–60 –60 –64 dBFS
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