Connecting Serial Controllers to the P2000 Comark Server Running Software Version 3.11
Preliminary – This information may change.
12
Data and Low Voltage Installations
The following sections describe recommended grounding of D-type connectors and
grounding requirements in the U.S.A. and Europe. The following notes apply to all
installations described in the
1.
Strip back the outer cover of the cable to reveal the cable’s screen.
2.
Cut back the screen so it just enters the enclosure.
Connect cable screens at both ends when connecting cables to user peripherals (such as
printers).
3.
The drain wire that extends from the screen-type shield must be kept as short as possible
(typically 2.5 cm or 1 inch). Connect a lug to the end of the wire and screw securely to
the wall of the enclosure or the nearest stud.
4.
All internal ground (earth) bonding straps must be left intact after installation.
5.
Check that grounding points are clean and free from paint or corrosion.
D-Type Connectors
All D-type connectors must use an Electromagnetic Interference (EMI) shielded shroud.
Verify good contact occurs when connecting D-type connector shrouds to cable shields.
Figure 6 shows a critical contact throughout the 360 degrees of the cable’s screen at the point
of entry to the shell. To ensure a good fit, strip the cable’s outside layer back to reveal the
metal shield and extend the shield to the very edge of the metal shroud’s connector. If the
shield does not fit snugly, apply metallic tape to ensure a firm contact.
The two curved parts of the shroud are shown in Figure 6 making contact with the flat plate
of the shroud. Tighten the two remaining screws to ensure a firm fit.
