Satellar is the new generation modular digital radio modem system from SATEL. It consists of a central unit, a radio unit and expansion units that enable designers to build independent, reliable, real-time radio data communication systems to meet user specific requirements.
A digital radio modem system is typically based on a central unit together with a radio unit used in a network as a master station or in locations where an Ethernet connection is needed. For radio router stations, the central unit is not necessarily required. In these cases, the radio unit can be used alone. This is possible because of the modular structure of the product.
Units are available as separate entities or as combined product packages. The Satellar-2DS includes a radio unit and a central unit, which enables full TCP/IP connectivity, the Satellar-2DSd provides the same functionality as the Satellar-2DS, but it is equipped with a colour display and a keypad while the Satellar-1DS is a radio unit that can be used in stations where a standard RS-connection is sufficient. The system can operate either as a transparent radio link, essentially replacing a wire, for classic RS232, RS485 or RS422 based protocols, or can operate as a wireless bridge/router in an IP-based network. Many network topologies are possible, from point-to-point to a nationwide chain with multiple branches.
The communication range of a point-to-point link is typically over 10 km in urban conditions and over 20 km for ideal line-of-sight conditions. The range can be further extended using high gain antennas, booster modules and radio repeaters. Data security is provided by 128 bit encryption on the air interface and the use of a built-in firewall in the central unit to ensure privacy both in the radio network and in the wired IP network.
Network management radio modem systems are often used in applications where reliability and independence are key properties. To support this demand, Satellar has built-in diagnostic and remote configuration features, which can be accessed by any of the optional user interfaces.
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