18
Preparations
Note
Determine the orientation of horizontal planes in accordance
with the applicable speci cations.
Vibration pickup placement and connection
Vibration axis
Environmental vibrations are normally measured in two horizontal planes
(front/back and left/right) and one vertical plane. This means that complex
vibration phenomena are reduced to three axes (X, Y, Z), for easier observation.
The axes are de ned as follows (facing the vibration source).
Horizontal front/back: X
Horizontal left/right: Y
Ver tical: Z
Z axis
Vibration
source
Vibration pickup
PV-83D
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