JetMove D203 1.4 Instructions on EMC
Jetter AG 21
Abb. 2: EMC-compliant shield connection of sub-D connectors
Connect the shields at both ends of the cables.
Unshielded wire ends of shielded cables should be as short as possible.
Draw the entire shield behind the isolation, and then clamp it under an
earthed strain relief with the greatest possible surface area.
When male connectors are used:
The shield must, in its entire perimeter, must be drawn behind the shield-
ing clamp of the metallized connector housing, respectively of the EMC
gland bushing (impedance shielding), its greatest possible surface area
being clamped under a strain relief.
Only use metallized connectors, e.g. Sub-D with metallized housing. Make
sure that the strain relief is directly connected with the housing here as well
(see Abb. 2).
If the shield cannot be attached to the connector, for example, with a screw
type terminal:
It is important that shield and strain relief are highly conductive and directly
connected to a grounded surface with the greatest possible surface area.
When doing so, grounding must be implemented in a way that the
unshielded portion of the cable is as short as possible (refer to Abb. 3).
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