76 Connection
HBM QuantumX
6 Modules and Transducers
6.1 General
6.1.1 Shielding design
Sources of interference may cause electromagnetic fields which couple interference voltages
into the respective measuring circuits inductively or capacitively through connecting cables
and equipment housings and thus affect the way the equipment works. It is essential to
ensure that the equipment used in the system itself does not emit electromagnetic
disturbances. Electromagnetic compatibility (EMC) which combines the concepts of required
electromagnetic immunity or susceptibility (EMS) and permitted electromagnetic interference
(EMI) has become increasingly more important over the past years.
The HBM Greenline shielding design
The complete measuring chain is fully enclosed in a Faraday cage through the unique design
of the cable shield. The cable shield is flattened, connected to the transducer housing, and
routed to the amplifier housing through conductive connectors. These measures substantially
reduce the effects of electromagnetic disturbances.
Conductive housing
ensuring connection
to plug and equipment
housing
Signal-carrying
contacts
Cable shield connected
to conductive housing
through strain relief
Fig.6.1: Cable shield connected to plug
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