ETSI - ETS 300 332
Satellite Earth Stations and Systems (SES); Transmit/Receive Very Small Aperture Terminals (VSATs) Used for Data Communications Operating in the Fixed Satellite Service (FSS) 6 GHz and 4 GHz Frequency Bands
| Organization: | ETSI |
| Publication Date: | 1 January 1994 |
| Status: | inactive |
| Page Count: | 24 |
scope:
This European Telecommunication Standard (ETS) provides specifications for the standardisation of the characteristics of transmit/receive Very Small Aperture Terminals (VSATs) operating as part of a satellite network used for the distribution and/or exchange of data between users.
In such a network a Centralised Control and Monitoring Function (CCMF) is responsible for the monitoring and control of remote VSATs.
These VSATs have the following characteristics:
- operating in the shared part of the C band allocated to the Fixed Services (FS) and to the Fixed Satellite Services (FSS), 5,850 to 6,425 GHz (Earth-Space), 3,625 to 4,200 GHz (Space-Earth);
- in these frequency bands circular polarisation is normally used and the system operates through satellites at 3° spacing;
- designed for unattended operation;
- limited to the reception and transmission of baseband digital signals;
- equipped with one, or several terrestrial ports but the total aggregate information bit rate transmitted towards the satellite through these ports shall be limited to 2 048 Mbit/s;
- antenna diameter not exceeding normally 7,3 m, or equivalent corresponding aperture.
The equipment considered in this ETS comprises both the "outdoor unit", usually composed of the antenna subsystem with the associated power amplifier and Low Noise Block (LNB), and the "indoor unit" composed of the remaining part of the communication chain, including the cable between these two units.
This ETS does not contain any requirement, recommendation or information about the installation of the VSATs, nor is this ETS intended to apply to VSAT network hub stations.
This ETS deals with two types of specification:
- specifications defined in order to protect other users of the frequency spectrum, both satellite and terrestrial, from unacceptable interference. In addition, these specifications are specified for the purposes of electrical safety, structural safety and solar radiation protection as well as protection from harmful interference;
- specifications related to characteristics which contribute to the quality of reception by providing the VSAT with minimum interference protection from other radio systems.
Document History
