SIST ETS 300 197:2000

• Abstract:

  Preparation of an ETS

• Status: Published
• Publication Date: 30-Jun-2000
• ICS: 33.040.20 - Transmission systems
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2000
• Due Date: 01-Jul-2000
• Completion Date: 01-Jul-2000
• Ref Project: ETSI ETS 300 197 ed.1 (1994-04) - Transmission and Multiplexing (TM); Parameters for radio relay systems for the transmission of digital signals and analogue video signals operating at 38 GHz

SIST ETS 300 197:2000 is a Slovenian standard based on ETS 300 197 from ETSI. It specifies minimum performance parameters for terrestrial fixed-service radio relay systems in the 37 GHz to 39.5 GHz band, for both digital signals and analogue video signals. Engineers, buyers and quality managers use it to check whether equipment, channels, interfaces, environmental classes and radio performance fit a 38 GHz link project.

What does SIST ETS 300 197:2000 specify?

SIST ETS 300 197:2000 covers the minimum performance requirements for terrestrial fixed services radiocommunications equipment operating in the 37 GHz to 39.5 GHz band. It separates the standard into one clause set for general characteristics, one for digital systems, and one for wide band analogue systems.

Part of the document	What it covers
Clause 1	Scope and the two equipment groups: digital signals and analogue video signals
Clause 2	Normative references used by the standard
Clause 3	Abbreviations
Clause 4	General characteristics, frequency plan, installation, power, safety and antenna-related points
Clause 5	Parameters for digital systems
Clause 6	Parameters for wide band analogue systems
Annex A	Informative bibliography

The scope is practical rather than theoretical: it sets performance criteria for equipment groups that have to be planned, installed and checked as complete radio relay systems.

What are the key requirements of SIST ETS 300 197:2000?

SIST ETS 300 197:2000 is mainly about frequency planning, environmental suitability, transmitter and receiver performance, and the way those items are measured. In practice, it tells you what the link has to support, what kind of site conditions it should survive, and what radio limits apply at the reference points in the system diagram.

Frequency plan, channel spacing and compatibility

Clause 4.1 fixes the operating band at 37 GHz to 39.5 GHz and says the channel plan follows CCIR Recommendation 749 with a basic raster of 3.5 MHz. The clause also gives channel spacings for digital and analogue cases, sets a minimum transmit/receive centre gap of 56 MHz, and a minimum duplex separation of 252 MHz.

For a project team, this is the part that governs how hops are laid out in the band and how closely carriers can be placed. It matters when you assign frequencies, plan reuse, and check whether a proposed pair of terminals can share an antenna arrangement.

Installation environment, power and safety

Clause 4.4 ties the equipment to environmental classes from ETS 300 019, with different expectations for weather-protected and non-weather-protected locations. Clause 4.10 requires operation from the primary supply ranges in ETS 300 132-1 and ETS 300 132-2, and Clause 4.11 points to maximum radiated power density in line with current world health organisation figures.

This means the supplier and the buyer need to match the radio unit to the site type, the available AC or DC supply, and the local power and safety rules. The same clause set also points to practical design issues such as external unit weight, wind loading and access for replacement units.

Digital system requirements

Clause 5 covers bit rates from 2 Mbit/s up to 155 Mbit/s, including n-times 2 Mbit/s configurations. Baseband interfaces are linked to the applicable CCITT interfaces, and the SDH baseband interface is aligned with the relevant G-series recommendations.

The transmitter part is strict on output power and spectral behaviour: the maximum output power is 1 W at point C', the output power tolerance depends on the environmental class, and the RF spectrum must fit the masks in the document. The clause also sets spurious emission limits, an RF frequency tolerance of ± 50 ppm, receiver input level limits, BER performance, background BER and interference sensitivity.

In practice, this is the section you use for conformance testing and for checking whether the radio will meet planned error performance on the intended hop length. It is also the part that tells you where to measure, because several limits are referenced to point C or point C' in the system diagram.

Wide band analogue system requirements

Clause 6 covers video baseband bandwidths up to 14 MHz and allows associated sub-carriers for continuity pilots, audio, secondary video and data. It gives video interface characteristics, optional audio and digital interfaces, and IF interface guidance through CCIR Recommendation 403.

The transmitter section again limits output power to 1 W, sets power tolerance by environmental class, and uses spectrum masks and frequency deviation limits for sub-carriers. Receiver requirements include a noise figure limit of 12 dB, a defined receiver threshold method, and interference checks for co-channel, adjacent channel and CW spurious interference.

For analogue links, this means the standard is aimed at predictable picture and sound transport, especially where the link carries broadcast-quality TV, surveillance video or radar remoting. The examples in the clause help a test lab decide what to measure even when the final service mix varies from one installation to another.

Antennas, TMN and system layout

Clause 4.5 shows the system reference diagram and defines the measurement points used throughout the standard. Clause 4.8 gives a minimum antenna radiation pattern envelope and mentions IEC type UBR/PBR 320 flanges when flanges are required, while Clause 4.7 points to a Telecommunications Management Network (TMN) interface in line with the relevant management recommendations.

These points matter because radio performance is measured as a system, not just as separate boxes. They help engineers align the antenna, feeder and radio unit, and help operators decide how the equipment will be monitored and managed.

What terms does SIST ETS 300 197:2000 define?

• Bit Error Ratio (BER) - the ratio used to describe digital transmission errors and to set receiver performance thresholds.
• Radio Frequency (RF) - the radio spectrum portion used for the transmitted and received carrier signals.
• Synchronous Digital Hierarchy (SDH) - the digital transport structure used for the 155 Mbit/s baseband case and related interfaces.
• Spectrum Reference Level (SRL) - the calculated reference level used when checking the digital RF spectrum mask.
• Telecommunications Management Network (TMN) - the management interface framework used when a user requires supervision and control of the system.
• Receiver threshold - the receive signal level at which the output performance reaches the defined threshold condition used as a reference for interference checks.

Who uses SIST ETS 300 197:2000?

SIST ETS 300 197:2000 is used by radio relay designers, system planners, equipment manufacturers, test laboratories, operators and procurement teams. It is relevant in telecommunications for point-to-point local and regional networks, mobile base station connections, subscriber access links, and transportable or off-shore use.

It is also used in broadcast and wideband video work such as point-to-point TV, surveillance video and radar remoting. Quality managers and buyers use it to compare equipment claims against the band plan, interface type, environmental class and measured radio performance.

Which standards are used with SIST ETS 300 197:2000?

Standard	What it contributes
ETS 300 019	Environmental conditions, classes and test severities for telecommunications equipment
ETS 300 132-1	AC power supply interface ranges for telecommunications equipment
ETS 300 132-2	DC power supply interface ranges for telecommunications equipment
CCITT G.703	Physical/electrical characteristics of hierarchical digital interfaces
CCITT G.707, G.708, G.709	SDH bit rates, network node interface and multiplexing structure
CCITT G.781 to G.784	SDH equipment structure, characteristics and management
CCITT G.773	Protocol suites for Q-interfaces for management of transmission systems
CCIR 403	IF characteristics for interconnection of analogue radio-relay systems
CCIR 749	Radio-frequency channel arrangements in the 36.0 GHz to 40.5 GHz band
CCIR 696 and 697	Error performance and availability objectives for digital radio-relay sections

Annex A also points to background references on propagation, rain attenuation, availability objectives and environmental engineering guidance.

What does the SIST ETS 300 197:2000 document contain?

The document contains the system reference diagram, frequency-band and channel-spacing tables, environmental class tables, power-supply ranges, antenna pattern limits, and separate performance sections for digital and wide band analogue systems. It also includes RF spectrum masks, spectrum analyser settings, BER performance curves, adjacent-channel interference tables and a formula for SRL.

For analogue operation, it provides example performance parameters for video and audio channels, plus transmitter deviation limits for sub-carriers. For both digital and analogue systems, it gives spurious emission limits, receiver input and threshold definitions, and the measurement reference points used to apply the limits in design and testing.

SLOVENSKI STANDARD
01-julij-2000
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Transmission and Multiplexing (TM); Parameters for radio relay systems for the
transmission of digital signals and analogue video signals operating at 38 GHz
Ta slovenski standard je istoveten z: ETS 300 197 Edition 1
ICS:
33.040.20 Prenosni sistem Transmission systems
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 197
TELECOMMUNICATION April 1994
STANDARD
Source: ETSI TC-TM Reference: DE/TM-04001
ICS: 33.080
Transmission, radio, video
Key words:
Transmission and Multiplexing (TM);
Parameters for radio relay systems for the transmission of
digital signals and analogue video signals operating at 38 GHz
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
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 1994. All rights reserved.
New presentation - see History box

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ETS 300 197: April 1994
Whilst every care has been taken in the preparation and publication of this document, 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.

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ETS 300 197: April 1994
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Abbreviations.8
4 General characteristics .8
4.1 Frequency bands and channel arrangements .8
4.1.1 Frequency band is in the range 37 GHz to 39,5 GHz.8
4.1.2 Co-polar channel spacing for like carriers.8
4.1.3 Transmit/receive centre gap.8
4.1.4 Transmit/receive duplex frequency separation .8
4.2 Performance prediction and objectives (for reference only) .8
4.3 Compatibility requirements between systems.9
4.4 Types of installation .9
4.4.1 Environmental conditions .9
4.4.1.1 Equipment within weather protected locations .9
4.4.1.2 Equipment for non-weather protected locations.10
4.4.2 Electromagnetic compatibility.10
4.5 Block diagram .10
4.6 General characteristics .11
4.7 Telecommunications Management Network (TMN) interface .11
4.8 Branching/feeder/antenna requirements .11
4.9 Mechanical requirements.12
4.10 Power supply.12
4.11 Safety considerations.12
5 Parameters for digital systems.12
5.1 Transmission capacity .12
5.2 Applications.12
5.3 Baseband parameters .12
5.3.1 2 Mbit/s to 140 Mbit/s baseband interfaces.12
5.3.2 Synchronous Digital Hierarchy (SDH) baseband interface .12
5.4 Transmitter characteristics .13
5.4.1 Transmitter power range .13
5.4.2 Transmitter output power tolerance .13
5.4.3 RF spectrum mask.13
5.4.3.1 Spectrum reference level.16
5.4.4 Spurious emissions .16
5.4.5 RF frequency tolerance .17
5.5 Receiver characteristics.17
5.5.1 Input level range.17
5.5.2 Spurious emissions .17
5.6 System performance.17
5.6.1 BER performance.17
5.6.2 Equipment background BER.18
5.6.3 Interference sensitivity.19
5.6.4 Distortion sensitivity.19
6 Parameters for wide band analogue systems .19
6.1 Transmit/receive capacity .19
6.2 Applications.20
6.3 Baseband parameters .20
6.3.1 Video interfaces.20
6.3.2 Audio interface (if applicable).20

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ETS 300 197: April 1994
6.3.3 Digital interface (if applicable). 20
6.3.4 IF interface (if applicable) . 20
6.3.5 Baseband performance . 20
6.4 Transmitter characteristics. 21
6.4.1 Tx power range. 21
6.4.2 Tx output power tolerance . 21
6.4.3 Radiated spectrum. 21
6.4.3.1 Spectrum masks . 21
6.4.3.2 Frequency deviation. 22
6.4.4 Spurious emissions. 23
6.4.5 RF frequency tolerance . 23
6.5 Receiver characteristics . 24
6.5.1 Input level range . 24
6.5.2 Spurious emissions. 24
6.5.3 Noise figure. 24
6.6 Transmit/receive performance . 24
6.6.1 Receiver threshold. 24
6.6.2 Interference sensitivity . 24
Annex A (informative): Bibliography . 26
History. 27

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ETS 300 197: April 1994
Foreword
This European Telecommunication Standard (ETS) has been prepared by the Transmission and
Multiplexing (TM) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS specifies the minimum performance parameters for radio equipment operating in the frequency
range 37 GHz to 39,5 GHz as specified in the scope. Other Standards cover radiocommunications
equipment not listed in Clause 1.
Annex A (Bibliography) provides details of the informative references provided in this ETS.

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ETS 300 197: April 1994
Blank page
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ETS 300 197: April 1994
1 Scope
This European Telecommunication Standard (ETS) covers the minimum performance requirements for
terrestrial fixed services radiocommunications equipment, as given below, in the frequency band 37 GHz
to 39,5 GHz.
This ETS specifies the performance criteria for the different equipment groups.
The equipment groups are:
- digital signals;
- analogue video signals.
2 Normative references
This ETS incorporates by dated and 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 when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 019: "Equipment Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment".
[2] prETS 300 132-1: "Equipment Engineering (EE); Power supply interface at the
input to telecommunications equipments Part 1: Interfaces operated by
alternating current "AC"". (DE/EE-02001.1)
[3] prETS 300 132-2: "Equipment Engineering (EE); Power supply interface at the
input to telecommunications equipments Part 2: Interfaces operated by direct
current "DC"". (DE/EE-02001.2)
[4] CCITT Recommendation G.703 (1991): "Physical/electrical characteristics of
hierarchical digital interfaces".
[5] CCITT Recommendation G.707 (1991): "Synchronous digital hierarchy bit
rates".
[6] CCITT Recommendation G.708 (1991): "Network node interface for the
synchronous digital hierarchy".
[7] CCITT Recommendation G.709 (1991): "Synchronous multiplexing structure".
[8] CCITT Recommendation G.781 (1990): "Structure of recommendations on
multiplexing equipment for synchronous digital hierarchy (SDH)".
[9] CCITT Recommendation G.782 (1990): "Types and general characteristics of
synchronous digital hierarchy (SDH) multiplexing equipment".
[10] CCITT Recommendation G.783 (1990): "Characteristics of synchronous digital
hierarchy (SDH) multiplexing equipment functional blocks".
[11] CCITT Recommendation G.784 (1990): "Synchronous digital hierarchy (SDH)
management".
[12] CCIR Recommendation 403: "Intermediate-frequency characteristics for the
interconnection of analogue radio-relay systems".
[13] CCIR Recommendation 749: "Radio frequency channel arrangements for digital
and analogue radio-relay systems operating in the 36.0 GHz to 40.5 GHz band".

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ETS 300 197: April 1994
[14] CCIR Recommendation 696: "Error performance and availability objectives for
hypothetical reference digital sections utilising digital radio-relay systems
forming part or all of the medium grade portion of an ISDN connection".
[15] CCIR Recommendation 697: "Error performance objectives for the local grade
portion at each end of an ISDN utilising digital radio-relay systems".
3 Abbreviations
For the purposes of this ETS, the following abbreviations apply.
BER Bit Error Ratio
RF Radio Frequency
SDH Synchronous Digital Hierarchy
SRL Spectrum Reference Level
TMN Telecommunications Management Network
4 General characteristics
4.1 Frequency bands and channel arrangements
4.1.1 Frequency band is in the range 37 GHz to 39,5 GHz
Channel plan: The channel plan shall be in accordance with CCIR Recommendation 749 [13] with a
basic raster of 3,5 MHz.
4.1.2 Co-polar channel spacing for like carriers
For systems operating on the same antenna, see subclause 4.3 a).
Table 1: Digital systems
Minimum Bit Rate (Mbit/s) 2 8 34 34 140/155
Channel Spacing (MHz) 7 14 28 56 140
Table 2: Analogue systems
Video Baseband (MHz) < 3,5 < 6 < 10 < 14
Channel Spacing (MHz) 28 56 56 56
4.1.3 Transmit/receive centre gap
The centre gap shall be taken as a multiple of the basic raster distance of 7 MHz and shall not be less
than 56 MHz.
4.1.4 Transmit/receive duplex frequency separation
The transmitter receiver duplex frequency separation shall not be less than 252 MHz (typical separations
will be around 1 GHz). Spacing should be in accordance with local administrations' frequency planning
rules.
4.2 Performance prediction and objectives (for reference only)
Systems considered in this ETS should meet the CCIR medium grade performance objectives of CCIR
Recommendation 696 [14] class 4 and the local grade performance objectives of CCIR Recommendation
697 [15].
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ETS 300 197: April 1994
The dominant fading mechanism is rain attenuation; performance prediction methods should be based on
the latest issues of the following CCIR Recommendations:
Recommendation 453: "The formula for the radio refractive index";
Recommendation 530: "Propogation data and prediction methods required for the design of terrestrial
line-of-sight systems";
Recommendation 837: "Characteristics of precipitation for propogation modelling";
Recommendation 838: "Specific attenuation model for rain for use in prediction methods";
Recommendation 840: "Attenuation due to clouds and fog".
4.3 Compatibility requirements between systems
a) Systems should be required to operate on common hops using either separate antennas or the
same antenna.
b) There should be no requirement to operate transmitting equipment from one manufacturer with
receiving equipment from another, or to multiplex different manufacturers equipment on the same
antenna.
4.4 Types of installation
The equipment may comprise both radio-relay units in weather protected locations and outdoor units with
the Radio Frequency (RF) assemblies located close to the antenna in order to minimise feeder losses.
4.4.1 Environmental conditions
The equipment shall be required to meet either the environmental conditions set out in ETS 300 019 [1],
which defines weather protected and non-weatherprotected locations, classes and test severities, or one
of the conditions listed in subclause 4.4.1.2.
4.4.1.1 Equipment within weather protected locations
The most important climatic parameter values for the five classes are given in table 3.
Table 3
Climatic class 3.1 3.2 3.3 3.4 3.5
+ 40 + 45 + 55 + 70 + 40
High air temperature (°C)
+ 5 - 5 - 25 - 40 - 40
Low air temperature (°C)
High relative humidity (%) 85 95 100 100 100
Low relative humidity (%) 5 5 10 10 10
Air movement (m/s) 5 5 5 5 5
Solar radiation (W/m ) 700 700 1 120 1 120 -
Climatic classes 3.1 and 3.2 apply to equipment designed for temperature controlled locations or partially
temperature controlled locations respectively. This type of equipment is generally described as "indoor"
equipment.
The use of radio-relay equipment covering climatic classes 3.3 (non-temperature controlled locations), 3.4
(sites with heat trap) and 3.5 (sheltered locations) is not mandatory.

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ETS 300 197: April 1994
4.4.1.2 Equipment for non-weather protected locations
This type of equipment is generally described as "outdoor" equipment. Class 4.1 or extended class 4.1 E
parameters should be applied. Class 4.1 applies to many of the ETSI countries and class 4.1 E applies to
them all. The most important climatic parameter values are given in table 4.
Table 4
Climatic class 4.1 4.1E
+40 +45
High air temperature (°C)
-33 -45
Low air temperature (°C)
High relative humidity (%) 100 100
Low relative humidity (%) 15 8
Air movement (m/s) 50 50
Solar radiation (W/m ) 1 120 1 120
It should be noted that radio cabinets supplied with a system will give their own "weather protection"
including full protection against precipitation and wind. Climatic classes 3.3, 3.4 and 3.5
(subclause 4.4.1.1) may, therefore, also be applicable for "outdoor" locations.
Some ETSI members may also decide to apply one of the non-standard specifications given in table 5.
Table 5
+40 +50
High air temperature (°C)
-20 -30
Low air temperature (°C)
High relative humidity (%) 90 90
Low relative humidity (%) 5 5
Air movement (m/s) 50 50
Solar radiation (W/m ) 1 120 1 120
4.4.2 Electromagnetic compatibility
Under study.
4.5 Block diagram
The system diagram is shown in figure 1.
Z' A' B' C' D'
Branching
Transmitter RF Tx Filter
Feeder
Network*
D C B A Z
Branching
Feeder RF Rx Filter Receiver
Network*
NOTE 1: For the purpose of defining the measurement points, the branching network does not
include a hybrid.
NOTE 2: Points B and C, B' and C' may coincide.
Figure 1: System diagram
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ETS 300 197: April 1994
4.6 General characteristics
The following characteristics are desirable:
- tuning facilities;
- flexibility for repeated installation;
- wayside traffic facilities;
- transmitter identification;
- maintenance facilities;
- performance monitoring facilities.
4.7 Telecommunications Management Network (TMN) interface
A TMN interface required by a user should be in accordance with CCITT Recommendations G.784 [11]
and G.773.
4.8 Branching/feeder/antenna requirements
a) The minimum recommended antenna radiation pattern envelope is shown in figure 2, element 2A. It
may be necessary to use higher performance antenna patterns as shown in figure 2, elements 2B
and 2C.
b) Antenna flange/equipment feeder flange. When flanges are required IEC type UBR/PBR 320 should
be used.
21.7
15.7
8.8
2A
6.7
2B
2.2
2C
-3.3
-5
-7
-8.4
-10
-15
510 25 30 50 65 70 90
0 20 40 60 80 100 120 140 160 180
Angle of Azimuth Relative to Main Beam (± degrees)
Figure 2: Limits of antenna gain for angles greater than 5° from the main beam axis
Gain Relative to an Isotropic Radiator (dBi)

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ETS 300 197: April 1994
4.9 Mechanical requirements
The following parameters should be taken into account in the design of equipment incorporating an
external unit:
a) maximum weight of external unit;
b) size of external unit for wind loading considerations;
c) maximum weight of replaceable units;
d) ease of access to replaceable units.
4.10 Power supply
The equipment shall operate from any of the primary supplies within the ranges specified in
ETS 300 132-1 [2] and ETS 300 132-2 [3].
ETS 300 132-1 [2] and ETS 300 132-2 [3] specify the tolerances as shown below:
for 48 V DC nominal: 40,5 57 V DC;
for 60 V DC nominal: 50 72 V DC;
for 230 V AC nominal: 207 253 V AC/50 Hz ± 2 Hz.
For DC systems, the positive pole of the battery should be earthed.
NOTE: Some countries may require to use a primary supply of 24 V.
4.11 Safety considerations
Maximum radiated power density under normal operating conditions should be in accordance with current
world health organisation figures.
5 Parameters for digital systems
5.1 Transmission capacity
Bit rates: 2 Mbit/s, 8 Mbit/s, 34 Mbit/s, 1
...