SIST EN 300 430 V1.4.1:2003

• Abstract:

  A) Update 5b spectrum masks in frequency bands up to 38 GHz. This will allow systems with software frequency tuning, and higher output power, without interfering with existing links. B) Add new design goal for 5a systems with respect to receiver sensitivity parameters for frequency bands 18-38GHz.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.20 - Transmission systems
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 300 430 V1.4.1 (2002-07) - Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of STM-1 digital signals operating in the 18 GHz frequency band with channel spacing of 55 MHz and 27,5 MHz

Overview

SIST EN 300 430 V1.4.1:2003 is a crucial European standard adopted by the Slovenian Institute for Standardization (SIST) for fixed point-to-point radio systems. It sets out the minimum parameters and requirements for digital radio-relay equipment transmitting STM-1 digital signals in the 18 GHz frequency band, specifically addressing systems with 55 MHz and 27.5 MHz channel spacing. The scope includes important updates for spectrum mask requirements up to 38 GHz, facilitating software-tuned frequencies and higher transmitter output power without interference, and new objectives for receiver sensitivity in higher frequency bands. This standard supports manufacturers and network operators to ensure interoperability, regulatory compliance, and optimal performance in terrestrial fixed radio communication systems.

Key Topics

• Frequency Bands & Channel Arrangements

  • Applicable to radio systems operating between 17.7 GHz and 19.7 GHz.
  • Defines compliance with channel arrangements per CEPT/ERC and ITU-R recommendations, supporting 55 MHz and 27.5 MHz spacing.

• Spectrum Efficiency Classes

  • Class 4: Typically 16- or 32-state modulation schemes (e.g., 16-QAM, 32-QAM).
  • Class 5: Higher spectral efficiency, using 64- or 128-state modulation (e.g., 64-QAM, 128-QAM).

• Interoperability & Compatibility

  • Ensures compatibility for equipment on the same radio path, accommodating both separate antennas and orthogonal polarizations.
  • Introduces new system type codes for regulatory reference.

• System Performance & Quality

  • Specifies performance objectives based on ITU-R and ITU-T recommendations.
  • Addresses Bit Error Rate (BER), interference sensitivity, and overall transmission quality.

• Environmental & Power Requirements

  • Outlines environmental resilience for both indoor and outdoor installations.
  • Details power supply interfaces as per ETSI engineering standards.

• Electromagnetic Compatibility (EMC)

  • Ensures adherence to European EMC standards for radio equipment.

Applications

SIST EN 300 430 V1.4.1:2003 is applied across a range of critical fixed wireless infrastructure:

• Regional and Metropolitan Area Networks

  • Used for high-capacity backhaul between core metropolitan sites and access points in SDH (Synchronous Digital Hierarchy) environments.

• Carrier & Enterprise Networks

  • Provides reliable, high-speed links for mobile operators, ISPs, and enterprise networks requiring STM-1 (155 Mbps) transport.

• Radio-Relay Solutions in Challenging Environments

  • Suitable for both weather-protected (indoor) and non-weather-protected (outdoor) deployments, supporting robust service in varied climate conditions.

• Frequency Planning and Network Expansion

  • Enables software-driven frequency tuning and scalable channel allocation, crucial for efficient spectrum use and future network growth.

Related Standards

For comprehensive implementation and regulatory alignment, the following standards and technical guidelines are referenced in the context of SIST EN 300 430 V1.4.1:2003:

• CEPT/ERC/REC 12-03: Channel arrangements for 17.7 GHz to 19.7 GHz point-to-point systems.
• ITU-R F.595, F.634, F.695: Channel plans and error performance objectives for radio-relay systems.
• EN 300 385 / EN 301 489-1 / EN 301 489-4: Electromagnetic compatibility standards for fixed radio links.
• EN 300 126-1: Conformance testing for point-to-point equipment.
• EN 300 833: Antenna requirements for fixed radio systems.
• EN 60950-1: General safety requirements for information technology equipment.

Practical Value

Systems designed under SIST EN 300 430 V1.4.1:2003 deliver dependable, scalable digital transmission in the 18 GHz band, facilitating:

• Efficient use of valuable radio spectrum.
• Future-proof network infrastructure via software-tunable frequencies.
• Seamless integration of multi-vendor equipment.
• High availability and performance required for modern telecommunications backbone and access solutions.

By adhering to this standard, manufacturers and operators ensure compliance with European regulations, achieve reliable service quality, and maintain interoperability across diverse fixed radio systems. This makes SIST EN 300 430 V1.4.1:2003 a foundational standard for any organization deploying or managing high-capacity fixed wireless networks in the 18 GHz band.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of STM-1 digital signals operating in the 18 GHz frequency band with channel spacing of 55 MHz and 27,5 MHz33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systems33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 300 430 Version 1.4.1SIST EN 300 430 V1.4.1:2003en01-december-2003SIST EN 300 430 V1.4.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 300 430 V1.4.1 (2002-07) 2
Reference REN/TM-04149-4 Keywords architecture, DRRS, PDH, point-to-point, SDH, STM, transmission ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [e-mail] Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2002. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 3
Contents Intellectual Property Rights.5 Foreword.5 1 Scope.6 2 References.7 3 Symbols and abbreviations.9 3.1 Symbols.9 3.2 Abbreviations.9 4 General characteristics.10 4.1 Frequency bands and channel arrangements.10 4.1.1 Channel arrangements.10 4.1.2 Channel spacing for systems operating on the same route.10 4.2 Compatibility requirements between systems.10 4.3 Performance and availability requirements.10 4.4 Environmental conditions.11 4.4.1 Equipment within weather protected locations (indoor locations).11 4.4.2 Equipment for non-weather protected locations (outdoor locations).11 4.5 Power supply.11 4.6 Electromagnetic compatibility.11 4.7 System block diagram.12 4.8 Telecommunications Management Network (TMN) interface.12 4.9 Branching/feeder/antenna characteristics.12 4.9.1 Antenna radiation patterns.12 4.9.2 Antenna cross-Polar Discrimination (XPD).12 4.9.3 Antenna Inter-Port Isolation (IPI).12 4.9.4 Waveguide flanges (or other connectors).13 4.9.5 Return loss.13 5 System Parameters.13 5.1 Transmission capacity.13 5.2 Baseband parameters.13 5.2.1 Plesiochronous interfaces.13 5.2.2 SDH baseband interface.13 5.3 Transmitter characteristics.13 5.3.1 Transmitter power range.14 5.3.2 Transmit power and frequency control.14 5.3.2.1 Automatic Transmit Power Control (ATPC).14 5.3.2.2 Remote Transmit Power Control (RTPC).14 5.3.2.3 Remote Frequency Control (RFC).14 5.3.3 Transmitter output power tolerance.15 5.3.4 Transmit Local Oscillator (LO) frequency arrangements.15 5.3.5 RF spectrum mask.15 5.3.6 Discrete CW lines exceeding the spectrum mask limit.18 5.3.6.1 Spectral lines at the symbol rate.18 5.3.6.2 Other spectral lines.18 5.3.7 Spurious emissions.19 5.3.7.1 Spurious emissions-external.19 5.3.7.2 Spurious emissions-internal.20 5.3.8 Radio frequency tolerance.20 5.4 Receiver characteristics.20 5.4.1 Input level range.20 5.4.2 Receiver image rejection.20 5.4.3 Spurious emissions-external.21 5.4.4 Spurious emissions-internal.21 5.5 System performance without diversity.21 SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 4
5.5.1 BER as a function of Receiver input Signal Level (RSL).21 5.5.2 Equipment Residual BER.22 5.5.3 Interference sensitivity.22 5.5.3.1 Co-channel interference sensitivity.22 5.5.3.2 Adjacent channel interference.22 5.5.3.3 CW spurious interference.23 5.5.4 Distortion sensitivity.23 5.6 System characteristics with diversity.23 Annex A (informative): Additional information.24 A.1 Radio frequency channel arrangement.24 A.2 Feeder/antenna return loss.24 A.3 Automatic Transmit Power Control (ATPC).25 A.4 Spectrum masks.25 A.5 RBER.26 A.6 Co-channel and adjacent channel interference.27 Annex B (normative): System type codes for regulatory procedures.29 Annex C (informative): Bibliography.30 History.31
ETSI ETSI EN 300 430 V1.4.1 (2002-07) 5
Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). The present document contains the minimum technical requirements to ensure compatibility of products and conformance with radio regulations across ETSI member states. Radio terminals from different manufacturers are not required to interwork at radio frequency (i.e. no common air interface). However, terminals may be combined with other manufacturers' equipment on a Radio Frequency (RF) branching network for operation on different polarizations. The present document defines the requirements of radio terminal and radio relay equipment and associated interfaces. The requirements for multiplex, network management and antenna/feeder equipment may be addressed elsewhere. This new version modifies only class 5b spectrum mask giving more allowance for practical implementations, without modifying any other requirements, and proposed design objectives for class 5a BER versus RSL.
National transposition dates Date of adoption of this EN: 12 July 2002 Date of latest announcement of this EN (doa): 31 October 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 April 2003 Date of withdrawal of any conflicting National Standard (dow): 30 April 2003
ETSI ETSI EN 300 430 V1.4.1 (2002-07) 6
1 Scope The present document specifies parameters for high capacity STM-1 digital radio-relay systems designed to operate in the 17,7 GHz to 19,7 GHz band. The channel spacing between adjacent co-polar channels shall be 55 MHz or 27,5 MHz. Operation in the Adjacent Channel Co-Polarization (ACCP) mode for class 4 systems and class 5 systems as defined below with orthogonal polarizations or in the alternated cross-polar mode is foreseen. Additionally for class 4 systems, operation in the Co-Channel Dual Polarized (CCDP) mode with orthogonal polarization is also foreseen. The present document covers both single and multi-channel systems. The present document specifies the minimum performance parameters for terrestrial fixed service radio communications equipment operating in the frequency range 17,7 GHz to 19,7 GHz and contains a revision from the previous version, in the area of: - categorization of previously considered equipments into a new spectrum efficiency class 4; - introduction of unique system type codes for regulatory reference to the various system types detailed in the present document, refer to new annex C and related categories of equipment classes of spectral efficiency; - new spectrum efficiency class 5 for STM-1 capacity for 27,5 MHz Adjacent Channel Alternate-Polarization (ACAP as class 5a) and Adjacent Channel Co-Polarization (ACCP as class 5b), see examples of the spectrum usage in figures 1.1a and 1.1b:
Figure 1 - technical specifications relevant to the EMC Directive [30], detailed in annex B. The applications of these digital radio-relay systems are anticipated to be in the regional and access networks, at data rates of Synchronous Transport Module, level 1 (STM-1). The parameters to be specified fall into two categories: a) those that are required to provide compatibility between channels from different sources of equipment on the same route connected either to: - separate antennas; or - separate polarizations of the same antenna; or - one polarization of one antenna at a frequency separation of 110 MHz or more, enabling, in addition for class 4 equipment only, interworking of different manufacturers equipment at the same Radio Frequency (RF) branching; - this category also includes parameters providing compatibility with the existing radio-relay network. b) parameters defining the transmission quality of the proposed system. The standardization deals with RF and baseband characteristics. Antenna/feeder system requirements are covered in EN 300 833 [33]. Two possible baseband interfaces for SDH systems have to be considered: one for STM-1 and another for 140 Mbit/s signals. The present document does not contain aspects related to test procedures and test conditions, however they are to be found in EN 301 126-1 [19]. SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 7
As the maximum transmission rate in a given bandwidth depends on systems spectral efficiency, different classes are defined: - class 4: equipment spectral efficiency based on typically 16 or 32-states modulation scheme (e.g. 16-QAM, 32-QAM, or equivalent); - class 5: equipment spectral efficiency based on typically 64 or 128-states modulation scheme (e.g. 64-QAM, 128-QAM, or equivalent). The above classes are indicative only and do not imply any constraint to the actual modulation format, provided that all the requirements in the present document are met. Safety aspects will not be considered in the present document. However compliance to EN 60950-1 [28] will be required to comply with Directive 1999/5/EC [29] (R&TTE). Technical background for most of the parameters and requirements referred in the present document may be found in TR 101 036-1 [20]. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. [1] CEPT/ERC/REC 12-03: "Harmonised radio frequency channel arrangements for digital terrestrial fixed systems operating in the band 17,7 GHz to 19,7 GHz". [2] ITU-R Recommendation F.595: "Radio-frequency channel arrangements for radio-relay systems operating in the 18 GHz frequency band". [3] ITU-R Recommendation F.634: "Error performance objectives for real digital radio-relay links forming part of the high-grade portion of international digital connections at a bit rate below the primary rate within an integrated services digital network". [4] ITU-R Recommendation F.695: "Availability objectives for real digital radio-relay links forming part of a high-grade circuit within an integrated services digital network". [5] ITU-R Recommendation F.750: "Architectures and functional aspects of radio-relay systems for synchronous digital hierarchy SDH-based networks". [6] ITU-R Recommendation F.751: "Transmission characteristics and performance requirements of radio-relay systems for SDH-based networks". [7] ITU-R Recommendation F.1191: "Bandwidths and unwanted emissions of digital fixed service systems". [8] ETSI ETS 300 019-1 (all parts): "Equipment Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1: Classification of environmental conditions". [9] ETSI ETS 300 019-2 (all parts): "Equipment Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 2: Specification of environmental tests". [10] ETSI ETS 300 132-1: "Equipment Engineering (EE); Power supply interface at the input to telecommunications equipment; Part 1: Operated by alternating current (ac) derived from direct current (dc) sources". SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 8
[11] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to telecommunications equipment; Part 2: Operated by direct current (dc)". [12] ITU-T Recommendation G.703: "Physical/electrical characteristics of hierarchical digital interfaces". [13] ITU-T Recommendation G.773: "Protocol suites for Q-interfaces for management of transmission systems". [14] ITU-T Recommendation G.784: "Synchronous digital hierarchy (SDH) management". [15] ITU-T Recommendation G.821: "Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an integrated services digital network". [16] ITU-T Recommendation G.826: "Error performance parameters and objectives for international, constant bit rate digital paths at or above the primary rate". [17] ITU-T Recommendation G.957: "Optical interfaces for equipments and systems relating to the synchronous digital hierarchy". [18] ETSI EN 300 385: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for fixed radio links and ancillary equipment". [19] ETSI EN 301 126-1: "Fixed Radio Systems; Conformance testing; Part 1: Point-to-point equipment - Definitions, general requirements and test procedures". [20] ETSI TR 101 036-1: "Fixed Radio Systems; Point-to-point equipment; Generic wordings for standards on digital radio systems characteristics; Part 1: General aspects and point-to-point equipment parameters". [21] ETSI ETS 300 635: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Radio specific functional blocks for transmission of M x STM-N". [22] ETSI EN 300 645: "Telecommunications Management Network (TMN); Synchronous Digital Hierarchy (SDH) radio relay equipment; Information model for use on Q interfaces". [23] CEPT/ERC/REC 74-01: "Spurious emissions". [24] ITU-T Recommendation O.151 (1992): "Error performance measuring equipment operating at the primary rate and above". [25] ITU-T Recommendation O.181 (2000): "Equipment to assess error performance on STM-N interfaces". [26] ETSI TR 101 035: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH) aspects regarding Digital Radio Relay Systems (DRRS)". [27] IEC 60154-2: "Flanges for waveguides; Part 2: Relevant specifications for flanges for ordinary rectangular waveguides". [28] EN 60950-1: "Information technology equipment - Safety - Part 1: General requirements". [29] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity. [30] Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility. [31] ETSI ETS 300 785: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH); Radio specific functional blocks for transmission of M x sub-STM-1". [32] CEPT Recommendation T/R 13-02: "Preferred channel arrangements for fixed services in the range 22,0 GHz-29,5 GHz". SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 9
[33] ETSI EN 300 833: "Fixed Radio Systems; Point-to-point Antennas; Antennas for point-to-point fixed radio systems operating in the frequency band 3 GHz to 60 GHz". [34] ETSI EN 301 489-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services;
Part 1: Common technical requirements". [35] ETSI EN 301 489-4: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 4: Specific conditions for fixed radio links and ancillary equipment and services". 3 Symbols and abbreviations 3.1 Symbols For the purposes of the present document, the following symbols apply: dB deciBel dBm deciBel relative to 1 milliwatt GHz GigaHertz kHz kiloHertz Mbit/s Megabits per second MHz MegaHertz ppm parts per million 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ac alternating current ACAP Adjacent Channel Alternate Polarization ACCP Adjacent Channel Co-Polarization ATPC Automatic Transmit Power Control BBER Background Block Error Rate BER Bit Error Rate C/I Carrier to Interference ratio CMI Coded Mark Inversion CSmin minimum practical Channel Separation (for a given radio-frequency channel arrangement) CW Continuous Wave DRRS Digital Radio Relay Systems EMC ElectroMagnetic Compatibility ERC European Radiocommunications Committee ESR Errored Seconds Ratio IF Intermediate Frequency IPI Inter-Port Isolation LO Local Oscillator NFD Net Filter Discrimination PDH Plesiochronous Digital Hierarchy PRBS Pseudo Random Binary Sequence QAM Quadrature Amplitude Modulation RBER Residual BER RF Radio Frequency RFC Remote Frequency Control RSL Receive Signal Level RTPC Remote Transmit Power Control SDH Synchronous Digital Hierarchy SOH Section OverHead STM-N Synchronous Transport Module, level N TMN Telecommunications Management Network SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 10 XPD cross-Polar Discrimination 4 General characteristics 4.1 Frequency bands and channel arrangements 4.1.1 Channel arrangements The systems are required to operate in the 17,7 GHz to 19,7 GHz frequency band, with a channel spacing of 55 MHz or 27,5 MHz. The equipment shall be capable of operating to the channel plans specified in CEPT/ERC/REC 12-03 [1] or ITU-R Recommendation F.595 [2]. For reader convenience, the basic parameters of the CEPT Recommendation are shown in annex A. 4.1.2 Channel spacing for systems operating on the same route System bit rates and their relevant channel spacing in the present document are reported in table 1 (for the precise payload bit rates, see clause 5.1). NOTE: According to systems characteristics the equipment can be connected either to separate antennas or on a separate polarization to the same antenna. Table 1: Digital systems channel spacings for various bit rates
Payload Bit Rate [Mbit/s] 140 and 155 Channel Class 4 equipments
55 Spacing [MHz] Class 5 equipments
55/27,5
For regulatory purposes in national procedures for licensing radio equipment according to the present document, the above system types shall be identified by the "system type codes" reported in annex C. 4.2 Compatibility requirements between systems The compatibility requirements between systems are as follows: a) there shall be no requirement to operate transmitting equipment from one manufacturer with receiving equipment from another; b) there may be a requirement to multiplex different manufacturers equipment on the same polarization of the same antenna; c) there may be a requirement to multiplex different manufacturers equipment on different polarization of the same antenna. This will not apply to systems with integral antenna. 4.3 Performance and availability requirements Systems considered in the present document shall be able to respect ITU-R high-grade performance objectives, i.e. ITU-R Recommendations F.634 [3] and F.695 [4], ITU-T Recommendation G.821 [15] and the performance objectives derived from ITU-T Recommendation G.826 [16]. SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 11 4.4 Environmental conditions The equipment shall be required to meet the environmental conditions set out in ETS 300 019-1 [8] and ETS 300 019-2 [9] which defines weather protected and non-weather protected locations, classes and test severity. The manufacturer shall state which class the equipment is designed to withstand. 4.4.1 Equipment within weather protected locations (indoor locations) Equipment intended for operation within temperature controlled locations or partially temperature controlled locations shall meet the requirements of ETS 300 019-1 [8] and ETS 300 019-2 [9] classes 3.1 and 3.2 respectively. Optionally, the more stringent requirements of ETS 300 019-1 [8] and ETS 300 019-2 [9] classes 3.3 (non-temperature controlled locations), 3.4 (sites with heat trap) and 3.5 (sheltered locations) may be applied. 4.4.2 Equipment for non-weather protected locations (outdoor locations) Equipment intended for operation within non-weather-protected locations shall meet the requirements of ETS 300 019-1 [8] and ETS 300 019-2 [9], class 4.1 or 4.1E. Class 4.1 applies to many European countries and class 4.1E applies to all European countries. 4.5 Power supply The power supply interface shall be in accordance with the characteristics of one or more of the secondary voltages foreseen in ETS 300 132-1 [10] and EN 300 132-2 [11]. NOTE: Some applications may require secondary voltages that are not covered by ETS 300 132-1 [10] and EN 300 132-2 [11]. For DC systems, the positive pole of the voltage supply will be earthed at the source. 4.6 Electromagnetic compatibility The equipment shall comply with EN 300 385 [18] or relevant parts of EN 301 489-1 [34] and EN 301 489-4 [35]. SIST EN 300 430 V1.4.1:2003

ETSI ETSI EN 300 430 V1.4.1 (2002-07) 12 4.7 System block diagram MODULATORTRANSMITTERZ'E'A'TRANSMITRF FILTERB'BRANCHINGC'D'FEEDERFEEDERBRANCHINGRF FILTERD(*)CBRECEIVEARECEIVEREDEMODULATORZ(*) NO FILTERING INCLUDED(*) NOTE 1: For the purpose of defining the measurement points, the branching network does not include a hybrid. NOTE 2: The points shown above are reference points only; points C and C', D and D' in general coincide. NOTE 3: Points B and C, B' and C' may coincide when simple duplexer is used. NOTE 4: In outdoor equipment, the branching network may be implemented by a common Tx-Rx duplexer.
Figure 2: System block diagram 4.8 Telecommunications Management Network (TMN) interface For SDH equipment ITU-T Recommendations G.784 [14] and G.773 [13] and ITU-R Recommendations F.750 [5] and F.751 [6] give the general requirements for TMN interface and functionality. ETS 300 635 [21], ETS 300 785 [31] and EN 300 645 [22] give the radio specific functional block description and the related radio fragment information model respectively. NOTE: The standardization of TMN interface functionalities is under study in ETSI TMN and will be applicable to the radio relay systems considered in the present document. 4.9 Branching/feeder/antenna characteristics 4.9.1 Antenna radiation patterns See EN 300 833 [33]. 4.9.2 Antenna cross-Polar Discrimination (XPD) See EN 300 833 [33]. 4.9.3 Antenna Inter-Port Isolation (IPI) See EN 300 833 [33]. SIST EN 300 430 V1.4.1:2003

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