HBM QuantumX MX1609, Руководство по эксплуатации, Страница: 77 / 181

77 Connection
HBM QuantumX
Note
All components of the measuring chain (including all cable joints such as connectors
and couplings) have to be surrounded by a closed, EMC-tested shield. Shield
transitions must be realized in the form of flattened, closed and low-impedance joints.
This is ensured when original HBM connectors are used.
Grounding and earthing
EMC − compliant wiring requires that signal ground and shield are separate, therefore the
shielding can be connected to earth at several points, for example, through the transducers
(metal housing) and the amplifier (housing connected to protective earth conductor).
In the case of potential differences in the measuring system, a potential equalization
conductor has to be laid (recommended: very flexible stranded wire, 10 mm
2
line diameter).
Ensure that signal and data lines are run separately from current − carrying power lines.
Ideally use metal cable ducts with internal separating plate. Signal ground, earth and shield
should be separate from one another.
To minimize the effect of electromagnetic disturbances and potential differences, the signal
ground and earth (or shield) are separated in HBM equipment. The mains protective earth
conductor or a separate earth potential line should be used as connection to earth. This is
common practice, for instance, for potential equalization in buildings. Avoid connecting the
earth lead to a radiator, water pipe or similar.