User Manual

RBS Product Description
Overvoltage Protection Modules
This module contains overvoltage protection for the E1/T1 interfaces. If the
E1/T1 interfaces are terminated in equipment outside the RBS equipment
room, these lines must be protected by Overvoltage Protection (OVP) modules
in the DF.
Optional Transmission Equipment
The cabinet can be connected to transmission equipment that is mounted
externally or inside the RBS depending on the transmission equipment.
Transmission equipment that can be used is as follows:
Transmission adapter (not connected to DF) with BNC connector
AXX 9100
MINI-LINK
TMR 9202
SIU-01
For more information about transmission equipment and configurations,
see document Transmission Configurations and Installation, RBS 2206,
151 86-EN/LZT 720 0461.
10 External Alarms
The RBS supports a maximum of 16 external alarms. The external alarm
device can set the alarm using either an open or a closed condition.
The alarm device connected to the terminals should be isolated relay contacts.
A closed contact (logic zero) is required to be below 2 k
, and an open contact
(logic one) above 100 k
. The current through a closed contact is 1.2 mA. The
voltage between terminals with an open contact is 24 V DC.
The inputs must be protected by an overvoltage protection unit.
The external alarms are defined at the installation. They are defined by using
the OMT or from the BSC using the remote OMT.
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19/1551-LZA 701 0001 Uen PG1 | 2010-10-08