Delphin ProfiMessage, Hardware Manual

Page: 257 / 322

Profi Message
9.2.3 Time signal
Every vibration signal recorded is initially saved to the buffer of the I/O module.
The “analogue input” channel delivers a block of measurement data (e.g. 2048
amplitude values over time). This block is referred to as a time signal.
Properties
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128 to 8192 samples, sampled synchronously/in parallel at 256 Hz to 20480
kHz
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Variable pre/post history and/or trigger point
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Digital filters, integrators etc. can be used
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Data compression can be used for transmission and storage.
Topics
9.2.3.1 Digital filter
Properties
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Choice of filter type: low-pass, band-pass, high-pass or demodulation filter
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Filter orders of 2 … 8, preset Butterworth characteristic
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Adjustable cut-off frequency in the range 1 Hz … 10 kHz
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Adjustable filters for each channel
Application
High-frequency interferences are filtered out of the acquired signal. Or only the
desired frequency range is filtered out for analysis.
Restrictions
The digital filters are also subject to these restrictions if applicable:
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Board V2.00 to V2.12
For 1 ... 4 analogue inputs: all filters available, max. order is 8.
For 5 ... 8 analogue inputs: only low-pass is available, max. order is 4.
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Board V2.13 and higher
For 1 ... 8 analogue inputs: all filters available, max. order is 6.
9.2.3.2
Digital integrator
Properties
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Numerical integration of the recorded vibration signal
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Fixed scaling factor preset at 1000.
Application
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Delphin Technology AG
Dezember 2015
Profi Message Manual