Base Station Cabling; Installation - ASCOM BS330 Technical Product Manual

16.2

Base station cabling

The base station cable must be a twisted pair cable with 2 pairs minimum for connection of the data lines. Also
power can be distributed via these data pairs.
A three-pair cable may be used when additional power wires (EPP) are required to increase the distance between
base station and radio exchange. If more EPP wires are necessary they can be connected to the EPP pins of the
second data/power connector, or they can be connected to one connector when using a screw-to-RJ45 adapter.
Data lines of the same twisted pair may be interchanged. For instance SC0-a and SC0-b (see figure 40) may be
interchanged. Also the EPP pair is insensitive for polarity reversal. Data pairs may not be interchanged.
It is assumed that service personnel know how to crimp these connectors to a cable.
Do not power the base station via the EPP terminals from a local power source and the radio exchange
simultaneously. As the two EPP inputs of the base station are interconnected in the base station, the two power
sources would be interconnected (see figure 36). However, the base station can be powered via the data pairs
from the radio exchange and the local power source simultaneously because they are interconnected via a
rectifier.
Data/power connector 1
Data/power connector 2
Fig. 36 Base station powering
16.3

Installation

Base stations can be mounted vertically or horizontally. Mount the base stations at places and positions as
determined in the system configuration plan. The base station must be placed such that it is not facing large
metal objects such as large heating pipes.
TD 92093 (1/LZBNB 103 108 R4D) / 2005-09-23/ Ver.C
 2005
SC0-a
SC0-b
SC1-a
SC1-b
EPP-a
EPP-b
SC0-a
SC0-b
SC1-a
SC1-b
EPP-a
EPP-b
Technical Product Manual - DCT1800-GAP
Installation instructions, BS330 base station
Base station
+
DC
−
DC
65