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

DE/TM-04001

Prenos in multipleksiranje (TM) - Parametri radiorelejnih sistemov za prenos digitalnih signalov in analognih video signalov, ki delujejo v frekvenčnem področju 38 GHz

General Information

• Status: Published
• Publication Date: 13-Apr-1994
• Technical Committee: TM 4 - TM Fixed Radio Systems
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 10-May-2007
• Ref Project: SIST ETS 300 197:2000 - Transmission and Multiplexing (TM); Parameters for radio relay systems for the transmission of digital signals and analogue video signals operating at 38 GHz

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 197:2000
01-julij-2000
3UHQRVLQPXOWLSOHNVLUDQMH703DUDPHWULUDGLRUHOHMQLKVLVWHPRY]DSUHQRV
GLJLWDOQLKVLJQDORYLQDQDORJQLKYLGHRVLJQDORYNLGHOXMHMRYIUHNYHQþQHP
SRGURþMX*+]
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
SIST ETS 300 197:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 197:2000

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SIST ETS 300 197:2000
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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Blank page

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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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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
2
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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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
2
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
2
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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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.
25
21.7
20
15.7
15
10
8.8
2A
6.7
5
2B
2.2
0
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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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, 140 Mbit/s, 155 Mbit/s (STM-1). System rates configured as n-times
2 Mbit/s are also considered.
5.2 Applications
2 Mbit/s - 155 Mbit/s point-to-point local and regional networks, mobile base station connections,
subscriber access links, (including transportable and off-shore use).
5.3 Baseband parameters
5.3.1 2 Mbit/s to 140 Mbit/s baseband interfaces
Baseband interfaces shall be in accordance with one of the applicable CCITT interfaces. Additional
service channels or wayside traffic are not considered in this ETS.
5.3.2 Synchronous Digital Hierarchy (SDH) baseband interface
In accordance with CCITT Recommendations G.703 [4], G.707 [5], G.708 [6], G.709 [7], G.781 [8],
G.782 [9], G.783 [10] and G.784 [11] with possible simplifications.
NOTE: Under study in ETSI STCs TM3 and TM4.

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5.4 Transmitter characteristics
5.4.1 Transmitter power range
The maximum output power shall be 1 Watt referred to point C' of the system diagram as shown in
figure 1.
5.4.2 Transmitter output power tolerance
The output power tolerance shall be within:
± 3 dB: classes 3.3 to 3.5 (as defined in subclause 4.4.1.1) and all classes as defined in
subclause 4.4.1.2;
± 2 dB: classes 3.1 and 3.2 (as defined in subclause 4.4.1.1).
5.4.3 RF spectrum mask
The equipment shall comply with the digital RF power spectrum mask given in figures 3 to 7 of this ETS.
The 0 dB reference level shown on the spectrum masks relates to the peak of the modulated spectrum,
excluding residual carrier. This reference level shall be within ± 3 dB of the measured level of the
unmodulated carrier minus the Spectrum Reference Level (SRL) calculated in accordance with
subclause 5.4.3.1. All spectrum masks include an allowance of ± 50 ppm for frequency stability.
NOTE 1: Some administrations may not allow spectrum peaks, due to the modulation process,
more than 3 dB above the dotted reference lines given in figures 3 to 7.
NOTE 2: Spectrum analyser settings for RF power spectrum measurements are given in
table 6.
Table 6
Bit rate (Mbit/s) 2 8 34 34 140
Channel spacing (MHz) 7 14 28 56 140
IF Bandwidth (kHz) 30 30 100 100 300
Total sweep width (MHz) 20 50 100 200 500
Video bandwidth (kHz) 0,1 0,1 0,1 1 1
Recommended scan time (s) 20 50 20 20 20

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0
- 10
- 20
- 25
- 30
- 40
- 45
- 50
- 60
3,3 6,1 6,8 12,8
0 5 10 15 20
Frequency from nom inal carrier frequency (M Hz)
(Mask includes the allowance for both short and long term frequency tolerance)
Figure 3: Limits of spectral power density for minimum system rate of 2 Mbit/s using channel
spacing of 7 MHz (referred to nominal centre frequency (fo))
0
- 10
- 20
- 25
- 30
- 40
- 45
- 50
- 60
6 11,6 13 22
0 5 10 15 20 25 30
Frequency from nom inal carrier frequency (MHz)
(Mask includes the allowance for both short and long term frequency tolerance)
Figure 4: Limits of spectral power density for minimum system rate of 8 Mbit/s using channel
spacing of 14 MHz (referred to nominal centre frequency (fo))
Transmitter spectral power density (dB) Transmitter spectral power density (dB)

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ETS 300 197: April 1994
0
- 10
- 20
- 30
- 40
- 45
- 50
- 60
11 18 25
0 10 20 30 40 50 60
Frequency from nom inal carrier frequency (MHz)
(Mask includes the allowance for both short and long term frequency tolerance)
Figure 5: Limits of spectral power density for minimum system rate of 34 Mbit/s using channel
spacing of 28 MHz (referred to nominal centre frequency (fo))
0
- 10
- 20
- 25
- 30
- 40
- 45
- 50
- 60
46
84 105 164
0 40 80 120 160 200
Frequency from nom inal carrier frequency (M Hz)
(Mask includes the allowance for both short and long term frequency tolerance)
Figure 6: Limits of spectral power density for minimum system rate of 140/155 Mbit/s using
channel spacing of 140 MHz (referred to nominal centre frequency (fo))
Transmitter spectral power density (dB) Transmitter spectral power density (dB)

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0
- 10
- 20
- 25
- 30
- 40
- 45
- 50
- 60
24
0 10 20 30 40 50 60 70 80 90 100
Frequency from nom inal carrier frequency (M Hz)
(Mask includes the allowance for both short and long term frequency tolerance)
Figure 7: Limits of spectral power density for minimum system rate of 34 Mbit/s using channel
spacing of 56 MHz (referred to nominal centre frequency (fo))
5.4.3.1 Spectrum reference level
The spectrum reference level shall be calculated using the following formula:
 Analyser IF Bandwidth (Hz)
SRL = 10 log
 
10
Symbol Rate (baud)
 
5.4.4 Spurious emissions
The transmitter shall be unmodulated, and the level of each spurious emission in the frequency range
30 MHz to 80 GHz, shall not exceed:
30 MHz to 21,2 GHz - 90 dBW;
21,2 GHz to 80 GHz - 60 dBW.
NOTE 1: All levels should be measured at point C'.
NOTE 2: Spurious emissions are emissions at frequencies which are outside the necessary
bandwidth and the level of which may be reduced without affecting the corresponding
transmission of information. Spurious emissions include harmonic emissions, parasitic
emissions, intermodulation products and frequency conversion products, but exclude
emissions which result from the modulation process. The necessary bandwidth is
defined as twice the transmitted symbol rate.
NOTE 3: Definitions and methods of measurement for integrated equipment where the antenna
port is inaccessible are under study.
Transm itter spectral power density (dB)

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NOTE 4: The lower frequency limit for spurious emission conformance testing and receiver
spurious response rejection shall be half the waveguide cut-off frequency subject to
the input/output waveguide being not less than two cut-off wavelengths long.
5.4.5 RF frequency tolerance
RF frequency tolerances are included in the spectrum masks (see figures 3 to 7). Maximum allowable RF
frequency tolerance shall not exceed ± 50 ppm.
5.5 Receiver characteristics
5.5.1 Input level range
-3
The input level range for a Bit Error Ratio, BER < 10 shall extend from the upper limit of - 50 dBW to the
-3
lower threshold for BER = 10 , referred to point C.
5.5.2 Spurious emissions
The frequency range in which the spurious emissions specifications apply shall be 30 MHz to 80 GHz. The
limit values measured at point C are:
30 MHz to 21,2 GHz - 90 dBW;
21,2 GHz to 80 GHz - 60 dBW.
NOTE 1: Spurious emissions are emissions at frequencies which are outside the necessary
bandwidth and the level of which may be reduced without affecting the corresponding
transmission of information. Spurious emissions include harmonic emissions, parasitic
emissions, intermodulation products and frequency conversion products, but exclude
emissions which result from the modulation process. The necessary bandwidth is
defined a
...