1、 STD-ETSI ETS 300 332-ENGL 1977 W 3400855 021413b 2TO = EUROPEAN IC 1 ELECOMMUNICATION n STANDARD ETS 300 332 July 1997 Second Edition Source: ETSI TC-SES Reference: RUSES-00012 ICs: 33.020 Key words: Satellite, earth station, VSAT, FSS Satellite Earth Stations and Systems (SES); Transm i t-on I y o
2、r transmit-and-receive Very Small Aperture Terminals (VSATs) used for communications operating in the Fixed Satellite Service (FSS) 6 GHz and 4 GHz frequency bands European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address:
3、 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - internet: secretariatQetsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and
4、the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1997. All rights reserved. STD-ETSI ETS 300 332-ENGL 1997 3400855 I1214237 137 Page 2 ETS 300 332: July 1997 Whilst every care has been taken in the preparation and publication of this do
5、cument, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. Contents Foreword . .- . 5 1 Scope . 7 2 Normative references . ._ . 8 3 Definitions and
6、abbreviations - 8 3.1 Definitions _ . 8 3.2 Abbreviations -. . 9 4 Test report . 10 5 Safety . 10 5.1 Mechanical construction . 01 5.2 Lightning . .- - 10 6 Radio Frequency (RF) . 11 6.1 6.2 On-axis spurious radiation Zl 6.3 Transmit carrier centre frequency stability . 13 6.4 Off-axis EIRP emission
7、 density (Co-polar and cross-polar) within the band 5, 850 GHz to 6, 650 GHz . .- -1 3 Antenna transmit gain pattern (Co-polar and cross-polar) . 14 Transmit polarization discrimination (linear) or voltage axial ratio (circular) 16 Antenna receive gain pattern (Co-polar and cross-polar) . 16 Receive
8、 polarization discrimination 18 Spurious radiation i . 11 6.5 Carrier suppression 14 6.6 6.7 6.8 6.9 7 Mechanical 18 7.1 Pointing stability . 18 7.2 7.3 Antenna pointing accuracy capability . 19 Linear polarization angle alignment capability . 19 8 Control and monitoring 19 History . 20 STDOETSI ETS
9、 300 332-ENGL 1997 3400855 0214139 TOT Page 5 ETS 300 332: July 1997 Foreword This second edition European Telecommunication Standard (ETS) has been produced by the Satellite Earth Stations and Systems (SES) Technical Committee of the European Telecommunications Standards Institute (ETSi). Transposi
10、tion dates Date of adoption: Date of latest announcement of this ETS (doa): 4 July 1997 31 October 1997 Date of latest publication of new National Standard or endorsement of this ETS (dop/e): 30 April 1998 I Date of withdrawal of any conflicting National Standard (dow): 30 April 1998 1 Previous page
11、 is blank STDmETSI ETS 300 332-ENGL 1777 W 3400855 02L9190 721 W Page 7 ETS 300 332: July 1997 1 Scope This European Telecommunication Standard (ETS) provides specifications for the standardization of the characteristics of transmit-only or transmit-and-receive Very Small Aperture Terminals (VSATs)
12、operating as part of a satellite network (e.g. star, mesh or point-to-point) used for the distribution and/or exchange of information between users. In such a network a Centralised Control and Monitoring Function (CCMF) is responsible for the monitoring and control of transmit-only and transmit-and-
13、receive 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 GHz to 6,650 GHz (earth-to-space), 3,400 GHz to 4,200 GHz (space-to-earth); - in these frequency bands cir
14、cular and linear polarization are normally used; - the VSAT operates through geostationary satellites at least 3“ away from any other geostationary satellite operating in the same frequency band and covering the same area: - designed usually for unattended operation; - antenna diameter not exceeding
15、 7,3 m, or equivalent corresponding effective area. The equipment considered in this ETS comprises both the “outdoor unit“, usually composed of the antenna sub-system and associated power amplifier and Low Noise Block (LNB), and the “indoor unit“ composed of the remaining part of the communication c
16、hain, including the cable between these two units. This ETS applies to the VSAT with its ancillary equipment and its various terrestrial ports, and operated under the conditions which are within the ranges of humidity, temperature and supply voltage declared by the manufacturer. There are no EMC spe
17、cifications under this ETS, however ETS 300 6733 contains the EMC specifications for VSATs. This ETS does not contain any specification or information on the installation of the VSATs. The specifications have been selected to ensure an adequate level of compatibility for VSATs. The levels, however,
18、do not cover extreme cases which may occur in any location but with a low probability of occurrence. In such a case it may be necessary to use special protection supplied to either the source of interference, or the interfered part or both. This ETS deals with two types of specification: - specifica
19、tions 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 structural safety and lightning protection as well as protection from harmful interference; - s
20、pecifications related to characteristics which contribute to the quality of reception by providing the VSAT with minimum interference protection from other radio systems. These specifications apply if required by the manufacturer. Previous page is blank 2 Normative references This ETS incorporates,
21、by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of any of these publications apply to this ETS only wh
22、en incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. PI 31 41 FI ITU-R Recommendation 732 (1 992): “Method for statistical processing of earth station antenna side-lobe peaks“. EN 50083-1 (1 993): “Cabled distribution syste
23、ms for television and sound signals - Part 1: Safety requirements“. ETS 300 673 (1996): “Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for 4/6 GHz and 11/12/14 GHz Very Small Aperture Terminal (VSAT) equipment and 11/12/13/14 GHz Satellite News Gathering (SNG) Trans
24、portable Earth Station (TES) equipment“. ETS 300 456: “Satellite Earth Stations and Systems (SES); Test Methods for Very Small Aperture Terminals (VSATs) operating in the 11/12/14 GHz frequency bands“. ETS 300 160: “Satellite Earth Stations and Systems (SES); Control and monitoring functions at a Ve
25、ry Small Aperture Terminal VSAT“. ETS 300 161: “Satellite Earth Stations and Systems (SES); Centralised control and monitoring functions for VSAT networks“. 3 Definitions and abbreviations 3.1 Defi nitlons For the purposes of this ETS, the following definitions apply: ancillary equipment: Equipment
26、used in connection with the VSAT is considered ancillary if the three following conditions are met: a) the equipment is intended for use in conjunction with the VSAT to provide additional operational and/or control features (e.g. to extend control to another position or location); and b) the equipme
27、nt cannot be used on a stand alone basis, to provide user functions independently of the VSAT; and c) carrier-on state: A VSAT is in this state when it is authorized by the CCMF to transmit and when it transmits a signal. the absence of the equipment does not inhibit the operation of the VSAT. carri
28、er-off state: A VSAT is in this state when it is authorized by the CCMF to transmit, but when it does not transmit any signal. NOTE 1: The existence of a carrier-off state depends on the system of transmission used. For VSATs designed for continuous transmission mode there may be no carrier-off stat
29、e. cross-polarization discrimination: The ratio of the on-axis co-polar gain to the cross-polar gain in a given direction, at a transmit or receive frequency. indoor unit: Is composed of that part of the VSAT which is not part of the outdoor unit. It is generally installed inside a building and is c
30、onnected to the outdoor unit. The connection cable between the outdoor and indoor unit is considered part of the indoor unit. STD=ETSI ETS 300 332-ENGL 1777 3LiO0855 02L4142 574 Page 9 ETS 300 332: July 1997 nominated bandwidth: The bandwidth of the VSAT radio frequency transmission is nominated by
31、the manufacturer. The nominated bandwidth is centred on the transmit frequency and does not exceed 5 times the occupied bandwidth. NOTE 2: The nominated bandwidth is wide enough to encompass all spectral elements of the transmission which have a level greater than the specified spurious radiation li
32、mits. The nominated bandwidth is wide enough to take account of the transmit carrier frequency stability. This definition is chosen to allow flexibility regarding adjacent channel interference levels which will be taken into account by operational procedures depending on the exact transponder carrie
33、r assignment situation. occupied bandwidth: For a digital modulation scheme -the width of the signal spectrum 10 dB below the maximum inband density. For an analogue modulation scheme - the width of a frequency band such that, below the lower and above the upper frequency limits, the mean power emit
34、ted is equal to 0,5 YO of the total mean power of the emission. outdoor unit: The part of the VSAT intended to be installed outdoor, as declared by the manufacturer, or as indicated in the user documentation. The outdoor unit usually comprises three main parts: a) the antenna sub-system which conver
35、ts the incident radiation field into a guided wave and vice versa; b) the Low Noise Block (LNB) down converter, which is a device that amplifies, with very low internal noise, the received signals in the Radio Frequency (RF) band and converts them to intermediate frequencies; c) the up converter and
36、 the power amplifier which convert from the intermediate frequency to RF and amplify the low level signals for transmission through the antenna subsystem. NOTE 3: The installation equipment (means of attachment) is outside the scope of this ETS. However, the antenna structures and other components d
37、irectly mounted on the antenna and forming an integral part of it, are subject to the specifications of this ETS. spurious radiation: Any radiation outside the nominated bandwidth. transmission disabled state: A VSAT is in this state when it is not authorized by the CCMF to transmit. voltage axial r
38、atio: The voltage axial ratio of an antenna at a transmit or a receive frequency is the ratio r equal to (x + l)/(x - 1) where x is the square root of the cross-polarization discrimination (not expressed in dB). 3.2 Abbreviations For the purposes of this ETS, the following abbreviations apply: CCMF
39、EIRP EMC FS FSS LN B RF VSAT Centralised Control and Monitoring Functions Equivalent Isotropically Radiated Power ElectroMagnetic Compatibility Fixed Service Fixed Satellite Service Low Noise Block (low noise amplifier and down converter) Radio Frequency Very Small Aperture Terminal STD-ETSI ETS 300
40、 332-ENGL L777 3400855 021iqL43 q30 Page 10 ETS 300 332: July 1997 4 Test report The test report shall be similar to the one specified in ETS 300 456 4 and shall contain: - the value of the nominated bandwidth declared by the manufacturer; - the value of the nominated bandwidth shall not exceed 5 ti
41、mes the occupied bandwidth ITU-R Recommendation 732 l; - the results of the tests; - all operational conditions and parameters. 5 Safety 5.1 Mechanical construction Purpose: Protection of operating personnel, the public and goods from insecure structures of the VSAT itself. Specification: This speci
42、fication applies to the outdoor unit only including mounted and structural components, and does not apply to the means of attachment. The outdoor unit, shall be designed to support the following main loads due to: - the weight of the antenna and structural components; - the wind speed. Loading due t
43、o snow and ice is not considered. At wind speeds up to 180 km/h, referred to standard atmosphere temperature and pressure (293 K and 1,013 x IO5 Pa (1 013 mbar) none of the components shall be torn away. Verification: The test method specified in subclause 5.1 of ETS 300 456 4 shall apply. 5.2 Light
44、ning Purpose: To avoid dangerous potential differences between the outdoor unit and any other conductive structure. Specification: Means shall be provided to permit the attachment of bonding conductors of dimension indicated in EN 50083-1 2, subclause 10.2.3. Verification: The test method specified
45、in subclause 5.2 of ETS 300 456 4 shall apply. . STD-ETSI ETS 300 332-ENGL 3777 W 3Y00855 02LY14Y 377 9 Page 11 ETS 300 332: July 1997 6 Radio Frequency (RF) The test methods of ETS 300 456 4 shall apply for verifications where applicable. Frequency range MHz 30 to 230 230 to 1 O00 6.1 Spurious radi
46、ation Purpose: Quasi-peak limits dB(pV/m) Class A Class B 40 30 47 37 To limit the level of interference to terrestrial and satellite radio services. Specification : Frequency band 1,0 GHz to 10,7 GHz 10,7 GHz to 21,2 GHz 21,2 GHz to 40,O GHz a) The VSAT shall not exceed the limits for radiated inte
47、rference field strength over the frequency range from 30 MHz to 1,0 GHz specified in table la. EIRP iimit (dBpW) 48 54 60 Table la: Radiated field strength at a distance of 10 m Frequency band 1 ,O GHz to 3,4 GHz 3,4 GHz to 5,7GHz 57 GHz to 5,85 GHz 6,65 GHz to 6,8 GHz 6,8 GHz to 10,7 GHz 10,7 GHz t
48、o 21,2 GHz 21,2 GHz to 40 GHz EIRP limit (dBpW) 49 55 75 (note) 75 (note) 55 61 67 The applicable class A or B limits shall be designated by the manufacturer and indicated in the data sheet of the test report. b) When the VSAT is in the transmission disabled state, the off-axis spurious Equivalent I
49、sotropically Radiated Power (EIRP) from the VSAT, in any 100 kHz band, shall not exceed the limits in table lb, for all off-axis angles greater than 7“. c) This specification applies outside the nominated bandwidth. For both the carrier-on and carrier-off states, the off-axis spurious EIRP from the VSAT, in any 100 kHz band shall not exceed the limits in table 2, for all off-axis angles greater than 7“. Table 2: Limits of spurious EIRP STDOETSI ETS 300 332-ENGL 1997 M 3400855 02L4L45 203 W Page 12 ETS 300 332: July 1997 The lower limits shall apply at the transition f
