Translation of the Original Operating Instructions
VP-80/VP-80 E
63
Transfer Function
The Transfer Function Module enables you to
carry out structural tests on machines with
shafts that are not rotating and to analyze
immovable objects such as, e.g. foundations
or frameworks. The transfer function is deter-
mined using an impact hammer with built-in
load sensor, and is given by the ratio between
the input signal (load introduced by the ham-
mer hits) and the output signal (measured vib-
ration), which is shown in the form of a Bode
diagram. The coherence of the measurement
is also displayed; this is a measure of a lar-
gely linear signal transmission, free from
interference.
In addition to the most well-known transfer
functions such as stiffness or mobility, four
further input signal to output signal ratios are
also available to the user. The acquisition of
up to three vibration measuring channels
(impulse responses) are also supported.
Acceptance Test
The Acceptance Test Module can be used for
quality inspections in batch production (final
acceptance), for example. It compares recor-
ded overalls with limit values established by
DIN ISO 10816, for example. The module
also allows you to draw on predefined or per-
sonally defined measuring tasks (format tem-
plates for the measuring procedure).
Up to 64 frequency bands in the frequency
range and 8 alarm levels are supported. The
alarm levels are color-coded for a better over-
view.
Picto-
gram
Description of the module
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