Highly sensitive measurement, control and communication devices require an efficient protection against accidental abusive mismatching. Visual instructions and colored labeling are not sufficient. Just a minimal contact, only for the fraction of a second, may cause a voltage flashover and damage the terminal device. Not only the risk of repair cost caused by such kind of incident but also the potential consequences like a system breakdown or e. g. an inoperative train may underline the importance of a mechanical coding of critical interconnections as an indispensable safety factor.
Having specialized in EMC interconnection solutions, Inotec electronics GmbH has developed a unique D-Sub coding system for hoods with screw locking. It does not only reliably avoid mismatching, it also improves the EMI / RFI shielding performance of the interface by providing a consistent full metal contact.