SIGMATEK S-IPC, Manual, Page: 33 / 42

S-IPC INTEL
®
ATOM DUAL CORE
21.02.2014 Page 33
2. Shielding
The wiring for theCOM1, COM2, RS485, CAN-Bus, DIAS-Bus, VGA, S-DVI and DVI must
be shielded. For RS485, CAN bus and DIAS bus, twisted pair wires must also be used. The
prefabricated S-DVI cable is available from Sigmatek in various lengths.
The low-ohm shielding is either connected at the entry to the control cabinet or directly
before the S-IPC of a large surface (cable grommets, grounding clamps)!
Noise therefore cannot reach the electronics and affect the function.
3. ESD Protection
Typically, the PS/2 devices (keyboard, mouse) are not equipped with shielded cables. The
same is true for a USB keyboards and mouse; these devices are disrupted by ESD and in
some instances, no longer function.
Before any device is connected to or disconnected from the S-IPC, the potential with ground
should be equalized (by touching the control cabinet or earth terminal). Electrostatic loads
(through clothing and shoes) can thereby be dissipated.