Connection
Shielding design
36 A0534-30.0 HBM: public MGCplus
4.2 Shielding design
Sources of interference can cause electromagnetic fields which can induce
interference voltages inductively or capacitively via the connection cable
and device housing in the measuring circuit and therefore interfere with the
device function. It must be ensured that the devices used in the system also
do not transmit any electromagnetic interference. Electromagnetic compati
bility (EMC), which encompasses both the required electromagnetic interfer
ence immunity (EMI) and the permissible electromagnetic interference emis
sions (EME), has become increasingly important over the years.
The HBM Greenline shielding design
The measurement chain is completely enclosed by a Faraday cage by
appropriate routing of the cable shield. The cable shield is extensively con
nected with the transducer housing and is routed via the conductive plug to
the amplifier housing. The influence of electromagnetic interference is signif
icantly reduced by these measures.
The conductive housing
ensures the connection
to the plug or device
housing
Signal-carrying
contacts
The cable shield is connected with the
conductive housing via strain relief
Fig. 4.3 Routing of the cable shield on the plug
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