Karel MS26S, Инструкция по установке и обслуживанию, Страница: 57 / 62

Karel MS26s Installation & Maintenance Guide
Edition 3.1 49
III.7. STANDARD TELEPHONE SETS,
EXTERNAL LINES
•
C
ABLING
:
For connecting a standard telephone set to the system the wires of the cable
coming from the corresponding extension connector on MB26s motherboard
must be attached to the A / B terminals of the telephone.
For connecting an external line to the system the wires of the cable coming
from the corresponding line connector on MB26s motherboard must be
attached to the external line.
The following figure illustrates the cabling of standard telephones:
Figure B-23
Normally a standard telephone set can be connected as much as 2 km away
from the system by using ordinary copper wires. Depending on the quality of the
wires the distance changes proportionally.
III.8. FILTER & PROTECTION / PROTECTION UNITS
•
I
NSTALLATION
:
The FPBASE / SPBASE unit has a metal base part, which has two pear holes.
Through these pear holes the FPBASE/SPBASE unit can be mounted on the
wall.
On the top covers of FPBASE/SPBASE and FPEXP/SPEXP units there are
four holes, one at each corner. These holes are used to fix each unit to the one
underneath. Three holes on FPEXP/SPEXP are connected to
FPBASE/SPBASE unit with plastic holders whereas the fourth one has a brass
card holder with two washers to carry the chassis ground to the upper units.
The following figure illustrates the installation of an FPEXP/SPEXP on top of
an FPBASE/SPBASE.