C
ombi-
L
ine
Industrial PC M Panel PC
© 2010 by Grossenbacher Systeme AG
DVS 51052 V2.0
17
5.3 P
REPARING THE SHIELD CONNECTIONS
The preparation of the data and signal cables is an essential factor in
ensuring the electromagnetic compatibility (EMC) of the Compact
PC/Compact Panel PC. This applies both to immunity and emission.
The
RS232
and
LPT interfaces
are connected with a D-subminiature
connector in compliance with DIN 41652. For this only use metal or
metallized connector casings with a cable clamp for strain relief that is
securely screwed or clamped onto the connector. The clamping of the cable
shield ensures that it is connected with the connector casing over a large
area and with low inductance. It is connected via the casing to the housing of
the Compact PC/Compact Panel PC.
The cable shield must be connected using the method described below or
one with identical inductance properties:
1. Strip the cable
2. Shorten the exposed shield braid to a length of approx. 3 cm.
3. Turn back the braid over the cable sheath.
4. Use a heat shrinkable tubing or a rubber grommet to cover the cable
sheath with the folded back shield braid so that 5 to 8 mm of exposed
cable shield is left at the sheath end and is cleanly covered at the back.
5. Fit the connector
6. The cable is then fastened at the exposed shield braid and the cable
sheath below it directly underneath the cable clamp strap of the
connector casing.
Metallisches oder metallisiertes
D-Subminiatur-Steckverbinder
Metallischer
Steckerkragen
Befestigungs-
schrauben
mit Gewinde UNC
Steckergehäuse
Schrumpfschlauch
zum Abdecken des
Schirmgeflechtes
Schirmgeflecht, über
den Kabelmantel
zurückgezogen
Bride für die Zugentlastung
und zur Kontaktierung
des Kabelschirmes mit
dem Steckergehäuse
Cabling should be carried out with special care in order
to guarantee interference-free operation.
The EMC values specified in the technical data can only
be guaranteed by observing the prescribed cable
preparation.
Metal or metallised
connector casing
Fastening
screws
Metallic connector
shroud
D-subminiature connector
Strap for cable clamp and
contacting of the cable
shield with the connector
casing
Heat shrinkable
tubing for covering
the shield braid
Shield braid pulled
back over the cable
sheath
DVS 51052-V3.0
