SATELLINE-3AS and SATELLINE-3ASd
22
5.3.3
Repeater
In case there is a need to extend the coverage of the radio modem network, the SATELLINE-3AS
can be used as a repeater station.
Data packets of maximum 1 kB (kiloByte) can be repeated. The repeater function has to be set
on in the SETUP mode. In the repeater mode the radio modem works as an independent unit.
When a radio modem is used only as a repeater it requires a power supply and an antenna. No
other equipment is needed.
A radio modem working as a repeater can also be used for transmission and reception of data.
In the repeater mode the radio modem sends the received data in the RS line the same way as
usually. However at the same time it saves temporarily the received data. After finishing the
reception of data the radio modem does not turn back to the state where it observes the interface
lines. It directly transmits the saved data on the same channel. At the transmission of data from
the RS-line the function of the radio modem is identical to a non-repeating radio modem.
There can be several repeaters in the same system and under the same master station. The
repeater stations can also be grouped in a chain, wherein the message goes through several
repeater stations. It is necessary to use addressing in a system with several adjacent or parallel
repeater stations to avoid message from circulating between repeaters.
MASTER STATION
REPEATTER 1
REPEATTER 2
SLAVE STATION
REPEATER 1
REPEATER 2
