User's Manual

Table Of Contents
DIB-500 R4.1 Product description
Constituents
54 Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1
3.1.5.6 Power supply
The voltage supply (Power Supply) is a hardware component and provides the voltage
supply for the TIB.
3.1.5.7 Receiver/transmitter unit (transceiver)
A carrier is a hardware component consisting of a transmitter, a receiver and a TETRA
protocol coder/decoder. Carriers are available in different frequency ranges as required.
Up to two carriers can be installed in one TIB. One carrier generates the radio channel,
via which the base station and the mobile terminal equipment exchange user data and
signalling data.
3.1.6 Antenna Coupling System (ACS)
The antenna coupling system (ACS) is a hardware component for the DIB-500 R4.1
base station. The ACS has been implemented in the form of a subrack for the equip-
ment rack and enables different antenna coupling variants.
In the hybrid variant, an ACS allows operating two or four carriers using one Tx/Rx
antenna. In the high power variant, one or two carriers are optionally available. In case
of two carriers, the operation utilises two Tx/Rx antennas. For operating more than four
carriers, two ACS (integrated in two equipment carriers) can be connected with one
another so that up to eight carriers on two Tx/Rx antennas are possible.
In the FlexibleTx variant, antenna coupling was performed project-specifically according
to the desires and requirements of the network operator via external antenna coupling
systems. In this way, the DIB-500 R4.1, e.g. can be connected to existing antenna cou-
pling systems.
Requirements for external antenna coupling systems.
The requirements on external antenna coupling systems are described in the site
requirements.
The DIB-500 R4.1 is available with different antenna coupling systems. The selection of
the corresponding antenna coupling system depends on the network requirements.
The following antenna interfaces are available for different network requirements:
| Hybrid variant
Compact design
As many as eight carriers per network element (two equipment racks with four
carriers each)
Highly flexible in the frequency selection
flexible frequency change
| Cavity variant
As many as eight carriers per network element (two equipment racks with four
carriers each)
higher transmitting power than hybrid variant