DIB-500 R4.1
Product description
Components of the DIB-500 R4.1
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Installation and Operation Manual 90DIB500IM02 – 5.2
The NEM-523 server application is responsible for management functions and controls
the downloads as well as the distribution of network resources. The NEM-523 is the
remote station, via which the NMC-522 DownloadManager communicates while down-
loading software or data. It is responsible for properly enabling a configuration or soft-
ware and for a fallback to the previous configuration or software version in the case of
faults. The NEM-523 is the operative manager within the network management system.
The redundancy management, e.g. is referred to as an operative function. If specific
network resources are not available temporarily, the application will control switchover
to the standby resources.
3.2.1.3
Synthesizer
The synthesizer is a hardware component and provides all the required clock pulses
and frequencies. These are based on the standard clock pulse (GPS) provided by the
Multi Server Processor Unit (MSU).
3.2.1.4
Power supply
The power supply is a hardware component and provides the voltage supply for the TIB.
3.2.1.5
Receiver/transmitter (carrier)
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.
3.2.2
Antenna Coupling System (ACS)
The antenna coupling system (ACS) is a network component for the Digital Indoor Base
Station (DIB). The ACS has been implemented in the form of a subrack for the equip-
ment rack. Depending on the variant, an ACS permits the operation of two or four carri-
ers on one Tx/Rx antenna. 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. For the diversity variants, the diversity reception is
facilitated through further (Tx)/Rx antennas.
The following variants for different requirements are available:
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Hybrid variant
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Cavity variant
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High power variant
