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C
4
HAPTER
Connecting the cable screening
When using shielded installation cables also use shielded RJ45 connectors. In this way the shielding of
the installation cables is automatically connected with the housing of the communication server and there-
fore with the building earth.
: Connect the cable screens to one another at the splitting point only. Observe the tree structure
NOTE
principle to prevent earth loops.
Equipping the Basic System
For an individual expansion the basic system can be equipped with interface cards, the appropriate wiring
adapters and system modules. An overview can be found in the
Capacity.
Fitting an interface card
Interface cards are fitted to slots IC1...IC4 (see
front
panel).
: Be sure to observe the
CAUTION
Shut down the communication server (see
1.
supply.
Remove the housing cover.
2.
Place the interface card at a slight angle into the required slot (see
3.
sure the angled side of the interface card is facing backwards (i.e. it must not project over the wiring
adapter slots).
Carefully press the interface card downwards until the two lateral metal clamps engage.
4.
Figure 4.12:
Mainboard interfaces, display and control elements and
Safety
regulations.
Shut-down mode
Tree structure principle
ChapterExpansion Stages and System
) and disconnect it from the power
Fitting an interface
E
B
S
QUIPPING THE
ASIC
YSTEM
I
NSTALLATION
card). Make
102
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