SATELLINE-3AS and SATELLINE-3ASd
5
22
INTRODUCTION
INTRODUCTION
SATEL is a Finnish electronics and telecommunications company that specialises in wireless data
communications. It designs, manufactures and markets radio modems for data communications and
alarm transfer systems. The main user groups include industrial companies, public organisations and
private persons.
SATEL is a leading supplier of radio modems in Europe. The Satel radio modems are type approved in
most European countries and elsewhere.
The amount of data transferred in a local area data communications network exhibits a tendency of
continuous growth. On the other hand, the average size of a communications system is increasing.
Satel’s response to these market tendencies is the SATELLINE-3AS, the first radio modem from SATEL with
a data speed of 19.2 kbps over the air. The data speed of RS interface is selectable between
300 … 38 400 bps.
The SATELLINE-3AS offers several new options related to the use of the radio modem. For the first time,
there is a built-in hardware compatibility with three selectable data interfaces, the RS-232, RS-422 and
RS-485.
A special model of the radio modem, the SATELLINE-3ASd, is equipped with a liquid crystal display
(LCD), which provides the user with several new, useful functions. The display can be utilised in the
SETUP mode for example during the implementation stage. Thanks to the display it is possible to change
the settings of the radio modem in the field without using an external terminal. It can also be used for
testing the quality of the radio connection between the stations.
The SATELLINE-3AS offers the possibility to use forward error correction (FEC) over noisy radio channels.
Error rate is minimised by means of advance checking and correction of the data packets. This is done
transparent to the user.
The radio modem has three basic operating modes: the Data Transfer mode, Setup mode and Test
mode. In the basic model SATELLINE-3AS the setting of operating parameters and selection of mode
and function is performed with a PC through the RS interface. The model SATELLINE-3ASd is equipped
with a LCD and four push buttons. In addition to changing the settings of the radio modem, the display
is used for testing the operating condition of the radio connection.
1. SATELLINE 3AS has a maximum data speed of 19.2 kbps and channel spacings 25 kHz or 12.5 kHz.
2. SATELLINE-3AS is compatible with the interface types RS-232, RS-422 and RS-485.
3. The model SATELLINE-3ASd is equipped with a LCD of its own, which facilitates setting up of the
radio modem.
4. The SATELLINE-3AS software includes a selectable error correction, which improves the functioning of
the radio modem under interference.
5. The software of the radio modem can be updated through the interface from a PC, without changing
the hardware.
