SIST EN 300 198 V1.5.1:2005

Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of digital signals operating at 23 GHz

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.

Fiksni radijski sistemi - Oprema tipa točka-točka - Parametri za radijske sisteme za prenos digitalnih signalov in analognih video signalov, ki delujejo v frekvenčnem območju 23 GHz

General Information

• Status: Published
• Publication Date: 31-Mar-2005
• 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-Apr-2005
• Due Date: 01-Apr-2005
• Completion Date: 01-Apr-2005
• Ref Project: ETSI EN 300 198 V1.5.1 (2002-07) - Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of digital signals operating at 23 GHz

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2005
)LNVQLUDGLMVNLVLVWHPL2SUHPDWLSDWRþNDWRþND3DUDPHWUL]DUDGLMVNHVLVWHPH]D
SUHQRVGLJLWDOQLKVLJQDORYLQDQDORJQLKYLGHRVLJQDORYNLGHOXMHMRYIUHNYHQþQHP
REPRþMX*+]
Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the
transmission of digital signals operating at 23 GHz
Ta slovenski standard je istoveten z: EN 300 198 Version 1.5.1
ICS:
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 Standard (Telecommunications series)

Fixed Radio Systems;
Point-to-point equipment;
Parameters for radio systems for the transmission
of digital signals operating at 23 GHz

2 ETSI EN 300 198 V1.5.1 (2002-07)

Reference
REN/TM-04149-2
Keywords
architecture, digital, DRRS, point-to-point, radio,
transmission
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ETSI
3 ETSI EN 300 198 V1.5.1 (2002-07)
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 .11
4.3 Performance and availability requirements .11
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) .12
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.14
5.3 Transmitter characteristics.14
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).15
5.3.2.3 Remote Frequency Control (RFC) .15
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.19
5.3.6.1 Spectral lines at the symbol rate.19
5.3.6.2 Other spectral lines.19
5.3.7 Spurious emissions.20
5.3.7.1 Spurious emissions - external.20
5.3.7.2 Spurious emissions - internal .21
5.3.8 Radio frequency tolerance .21
5.4 Receiver characteristics.21
5.4.1 Input level range .21
5.4.2 Receiver local oscillator frequency arrangements .21
5.4.3 Spurious emissions.21
5.4.3.1 Spurious emissions - internal .21
5.5 System performance without diversity.21
ETSI
4 ETSI EN 300 198 V1.5.1 (2002-07)
5.5.1 BER as a function of Receiver input Signal Level (RSL).22
5.5.2 Equipment Residual BER .22
5.5.3 Interference sensitivity.23
5.5.3.1 Co-channel interference sensitivity.23
5.5.3.2 Adjacent channel Interference.23
5.5.3.3 CW Spurious Interference.24
5.5.3.4 Front-end non-linearity requirements (two-tone CW spurious interference) .24
5.5.4 Distortion sensitivity.25
5.6 System characteristics with diversity .25
Annex A (informative): Additional information.26
A.1 Radio frequency channel arrangement .26
A.2 Feeder/antenna return loss.26
A.3 Automatic Transmit Power Control (ATPC) .27
A.4 RBER.27
A.5 Co-channel and adjacent channel interference.28
Annex B (normative): System type codes for regulatory procedures .32
Annex C (normative): Output Power Tolerance and RBER.33
Annex D (informative): Bibliography.34
History .35

ETSI
5 ETSI EN 300 198 V1.5.1 (2002-07)
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 specifies the minimum performance parameters for radio equipment operating in the frequency
ranges as detailed in clause 4.1.1.
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
6 ETSI EN 300 198 V1.5.1 (2002-07)
1 Scope
The present document specifies the minimum performance parameters for terrestrial digital fixed service radio
communications equipments operating in the 23 GHz frequency band and contains a complete revision in the areas of:
- additional systems with higher spectrum efficiency in the new class 4 systems;
- introduction of unique system type codes for regulatory reference to the various system types detailed in the
present document, refer to annex C and related categories of equipment classes of spectral efficiency;
- change of spectrum mask and adjacent channel selectivity of STM-0 systems in 28 MHz channel spacing to align
to EN 300 639 [32];
- introduction of new spectrum efficiency class 5 for STM-1 capacity for 28 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;

- technical specifications relevant to the EMC Directive [35], detailed in annex B.
NOTE: In EN 300 198 (V1.2.2) [36] there was provision for:
- parameters for wideband analogue systems;
- further options for digital radio systems (there referred as Grade A systems);
- specific antenna radiation patterns (now superseded by EN 300 833 [3]).
These options are not reprinted in this version as they are considered to be no longer of interest for ETSI members.
However, for regulatory purposes, they may still be referenced from EN 300 198 (V1.2.2) [36].
Digital systems are intended to be used for point-to-point connections in local and regional networks at data rates
between 2 Mbit/s and 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
- to separate polarizations of the same antenna;
b) parameters defining the transmission quality of the proposed system.
The present document deals with Radio Frequency (RF) and baseband characteristics relevant to low, medium and high
capacity Plesiochronous Digital Hierarchy (PDH) transmission systems, STM-0 and STM-1 Synchronous Digital
Hierarchy (SDH) transmission systems. Antenna/feeder system requirements are covered in EN 300 833 [3].
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 [2].
ETSI
7 ETSI EN 300 198 V1.5.1 (2002-07)
As the maximum transmission rate in a given bandwidth depends on system spectral efficiency, different equipment
classes are defined:
class 2: equipment spectral efficiency based on typically 4-states modulation scheme (e.g. 4-FSK, 4-QAM,
or equivalent);
class 3: equipment spectral efficiency based on typically 8-states modulation scheme (e.g. 8 PSK, or
equivalent);
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-states 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 are outside the mandate of ETSI and they will not be considered in the present document. However
compliance to EN 60950 [33] will be required to comply with Directive 1999/5/EC [34] (R&TTE).
Technical background for most of the parameters and requirements referred in the present document may be found in
TR 101 036-1 [29].
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 Recommendation T/R 13-02: "Preferred channel arrangements for fixed services in the
range 22,0-29,5 GHz".
[2] ETSI EN 301 126-1: "Fixed Radio Systems; Conformance testing; Part 1: Point-to-point
equipment - Definitions, general requirements and test procedures".
[3] 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".
[4] ETSI EN 300 645: "Telecommunications Management Network (TMN); Synchronous Digital
Hierarchy (SDH) radio relay equipment; Information model for use on Q interfaces".
[5] ETSI ETS 300 019 (all parts): "Equipment Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment".
[6] 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".
[7] ETSI EN 300 132-2: "Environmental Engineering (EE); Power supply interface at the input to
telecommunications equipment; Part 2: Operated by direct current (dc)".
[8] ETSI EN 300 385: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for fixed radio links and ancillary equipment".
[9] ETSI ETS 300 635: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy
(SDH); Radio specific functional blocks for transmission of M x STM-N".
ETSI
8 ETSI EN 300 198 V1.5.1 (2002-07)
[10] ETSI ETS 300 785: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy
(SDH); Radio specific functional blocks for transmission of M x sub-STM-1".
[11] ITU-R Recommendation F.750: "Architectures and functional aspects of radio-relay systems for
synchronous digital hierarchy (SDH)-based network".
[12] ITU-R Recommendation F.751: "Transmission characteristics and performance requirements of
radio-relay systems for SDH-based networks".
[13] ITU-R Recommendation F.1102: "Characteristics of fixed wireless systems operating in frequency
bands above about 17 GHz".
[14] ITU-R Recommendation F.1491: "Error performance objectives for real digital radio links used in
the national portion of a 27 500 km hypothetical reference path at or above the primary rate".
[15] ITU-R Recommendation F.1191: "Bandwidths and unwanted emissions of digital fixed service
systems".
[16] ITU-R Recommendation P.530: "Propagation data and prediction methods required for the design
of terrestrial line-of-sight systems".
[17] ITU-T Recommendation G.703: "Physical/electrical characteristics of hierarchical digital
interfaces".
[18] ITU-T Recommendation G.707: "Network node interface for the synchronous digital hierarchy
(SDH)".
[19] ITU-T Recommendation G.773: "Protocol suites for Q-interfaces for management of transmission
systems".
[20] ITU-T Recommendation G.708: "Sub STM-0 network node interface for the synchronous digital
hierarchy (SDH)".
[21] IEC 60154-2: "Flanges for waveguides. Part 2: Relevant specifications for flanges for ordinary
rectangular waveguides".
[22] ITU-T Recommendation G.783: "Characteristics of synchronous digital hierarchy (SDH)
equipment functional blocks".
[23] ITU-T Recommendation G.784: "Synchronous digital hierarchy (SDH) management".
[24] ITU-T Recommendation G.826: "Error performance parameters and objectives for international,
constant bit rate digital paths at or above the primary rate".
[25] ITU-T Recommendation G.861: "Principles and guidelines for the integration of satellite and radio
systems in SDH transport networks".
[26] ITU-T Recommendation G.957: "Optical interfaces for equipments and systems relating to the
synchronous digital hierarchy".
[27] ITU-T Recommendation O.151: "Error performance measuring equipment operating at the
primary rate and above".
[28] ITU-T Recommendation O.181: "Equipment to assess error performance on STM-N interfaces".
[29] 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".
[30] CEPT/ERC/REC 74-01: "Spurious emissions".
[31] ETSI TR 101 035: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH)
aspects regarding Digital Radio Relay Systems (DRRS)".
ETSI
9 ETSI EN 300 198 V1.5.1 (2002-07)
[32] ETSI EN 300 639: "Fixed Radio Systems; Point-to-point equipment; Sub-STM-1 digital radio
systems operating in the 13 GHz, 15 GHz and 18 GHz frequency bands with about 28 MHz
co-polar and 14 MHz cross-polar channel spacing".
[33] EN 60950: "Safety of information technology equipment".
[34] 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.
[35] Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member
States relating to electromagnetic compatibility.
[36] ETSI EN 300 198 (V1.2.2): "Transmission and Multiplexing (TM); Digital Radio Relay Systems
(DRRS); Parameters for DRRS for the transmission of digital signals and analogue video signals
operating at 23 GHz".
[37] 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".
[38] 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:
Ω Ohm
dB decibel
dBm decibel relative to 1 mW
GHz GigaHertz
kHz kiloHertz
Mbit/s Mega-bits per second
MHz MegaHertz
mW milliWatt
ns nanosecond
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
AU Administrative Unit
BBER Background Block Error Ratio
BER Bit Error Ratio
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
dc direct current
DRRS Digital Radio Relay Systems
EIRP Equivalent Isotropically Radiated Power
ETSI
10 ETSI EN 300 198 V1.5.1 (2002-07)
EMC ElectroMagnetic Compatibility
ESR Errored Second Ratio
FSK Frequency-Shift Keying (modulation)
IF Intermediate Frequency
IPI Inter-Port Isolation
LO Local Oscillator
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-0 medium capacity SDH radio transport module (51,840 Mbit/s AU-3 equivalent, also referred as
STM-0 by ITU-T Recommendation G.861)
STM-N Synchronous Transport Module, level N
sub-STM-0 low capacity SDH radio transport module (n times VC-12 or VC2 equivalent)
TMN Telecommunications Management Network
XPD cross-Polar Discrimination
4 General characteristics
4.1 Frequency bands and channel arrangements
4.1.1 Channel arrangements
The frequency range shall be 22 GHz to 22,6 GHz paired with 23 GHz to 23,6 GHz. The channel arrangements shall be
in accordance with CEPT Recommendation T/R 13-02 [1].
For reader convenience, the basic parameters of the CEPT Recommendation T/R 13-02 [1] 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 2 2 × 2 8 2 × 8 34 51 140 and 155
Rate [Mbit/s] ⇒
Channel Class 2 equipments 3,5 3,5 7 14 28 56
Spacings [MHz]
Class 4 equipments  3,5 7 14 14/28 56

Class 5 equipments    28
NOTE: n × 2 Mbit/s and n × 34 Mbit/s bit rates may be used where appropriate.
n × 2 Mbit/s mapped into SDH VC12 transport bit rates (sub-STM-0 defined by ITU-T Recommendation
G.708 [20]) may be used where appropriate (e.g. three or four times VC12 into an 8 Mbit/s channel spacing).
The class 2, 2 Mbit/s in 3,5 MHz and the class 4 in 28 MHz reflects equipment more typical to a class 1
(2 Mbit/s) and class 3 (STM-0) system and as a result the adjacent channel interference parameters are
more stringent.
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.
ETSI
11 ETSI EN 300 198 V1.5.1 (2002-07)
4.2 Compatibility requirements between systems
The compatibility requirements between systems are as follows:
- there shall be no requirement to operate transmitting equipment from one manufacturer with receiving
equipment from another;
- there shall not be a requirement to multiplex different manufacturers equipment on the same polarization of the
same antenna;
- 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;
- depending on the application, it shall be possible to operate the system in vertical and/or horizontal polarization,
if required by the channel arrangement.
4.3 Performance and availability requirements
Digital equipment shall be designed in order to meet network performance and availability requirements foreseen by
ITU-T Recommendation G.826 [24], following the criteria defined in ITU-R Recommendations F.1491 [14] for the
national portion of the digital connection.
The implication of the link design on the performance is recognized and the general design criteria reported in ITU-R
Recommendations P.530 [16] and F.1102 [13] shall be applied.
4.4 Environmental conditions
The equipment shall be required to meet the environmental conditions set out in ETS 300 019 [5] 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 [5] classes 3.1 and 3.2 respectively.
Optionally, the more stringent requirements of ETS 300 019 [5] 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 [5], 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 [6] and EN 300 132-2 [7].
NOTE: Some applications may require secondary voltages that are not covered by ETS 300 132-1 [6] and
EN 300 132-2 [7].
4.6 Electromagnetic compatibility
The equipment shall comply with EN 300 385 [8] or relevant parts of EN 301 489-1 [37] and EN 301 489-4 [38].
ETSI
12 ETSI EN 300 198 V1.5.1 (2002-07)
4.7 System block diagram
Z' E' A' TRANSMIT B' C' D'
MODULATOR TRANSMITTER BRANCHING FEEDER
RF FILTER
(*)
D
Z
E A B C
RECEIVE
BRANCHING FEEDER
DEMODULATOR RECEIVER
RF FILTER
(*)
(*) 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.

Figure 2: System block diagram
4.8 Telecommunications Management Network (TMN) interface
For SDH equipment ITU-T Recommendations G.784 [23] and G.773 [19] and ITU-R Recommendations F.750 [11] and
F.751 [12] give the general requirements for TMN interface and functionality. ETS 300 635 [9], ETS 300 785 [10] and
EN 300 645 [4] give the radio specific functional block description and the related radio fragment information model
respectively.
NOTE: The standardization of TMN interface functionality 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 [3].
4.9.2 Antenna cross-Polar Discrimination (XPD)
See EN 300 833 [3].
4.9.3 Antenna Inter-Port Isolation (IPI)
See EN 300 833 [3].
4.9.4 Waveguide flanges (or other connectors)
When flanges are required at reference point C, C', the following shall be used according to IEC 60154-2 [21]:
- UBR/PBR/CBR-220, for the complete frequency range.
ETSI
13 ETSI EN 300 198 V1.5.1 (2002-07)
4.9.5 Return loss
Equipments according to the present document are likely to have integral antennas or very similar technical
solutions, without long feeder connections; return loss is not considered an essential requirement.
When an antenna is an integral part of the equipment there shall be no requirement.
For feeder/antenna return loss requirement see annex A.
5 System Parameters
5.1 Transmission capacity
Payload bit rates considered in the present document are:
- 2,048 Mbit/s;
- 2 × 2,048 Mbit/s;
- 8,448 Mbit/s;
- 2 × 8,448 Mbit/s;
- 34,368 Mbit/s;
- 51,840 Mbit/s (STM-0);
- 139,264 Mbit/s; and
- 155,520 Mbit/s (STM-1).
System rates configured as n-times 2 Mbit/s or n-times 34 Mbit/s or n-times 2 Mbit/s mapped into SDH VC-12
(sub-STM-0) are also considered.
In the following clauses, these capacities will be simply referred as 2 Mbit/s, 2 × 2 Mbit/s, 8 Mbit/s, 2 × 8 Mbit/s,
34 Mbit/s, 51 Mbit/s (STM-0), 140 Mbit/s, and 155 Mbit/s (STM-1) respectively.
5.2 Baseband parameters
All the following specified baseband parameters refer to point Z and Z' of figure 2. Parameters for service channels and
wayside traffic channels are outside the scope of the present document.
5.2.1 Plesiochronous interfaces
Plesiochronous interfaces at 2 Mbit/s, 8 Mbit/s, 34 Mbit/s and 140 Mbit/s shall comply with ITU-T
Recommendation G.703 [17].
ETSI
14 ETSI EN 300 198 V1.5.1 (2002-07)
5.2.2 SDH baseband interface
The SDH baseband interface shall be in accordance with ITU-T Recommendations G.703 [17], G.707 [18], G.783 [22],
G.784 [23] and G.957 [26] and ITU-R Recommendations F.750 [11] and F.751 [12]. For sub-STM-0 rates ITU-T
Recommendation G.861 [25] mapping applies.
Two STM-1 interfaces shall be possible:
- Coded Mark Inversion (CMI) electrical (ITU-T Recommendation G.703 [17]); and
- Optical (ITU-T Recommendation G.957 [26]).
The use of reserved bytes contained in the Section OverHead (SOH), and their termination shall be in accordance with
ITU-R Recommendations F.750 [11], F.751 [12] and for sub-STM-0 with ITU-T Recommendation G.708 [20].
NOTE: Further details on the possible use of the SOH bytes reserved for future international standardization are
given in TR 101 035 [31].
5.3 Transmitter characteristics
The specified transmitter characteristics shall be met with the appropriate baseband signals applied at reference point Z'
of figure 2. For PDH interface this shall be a Pseudo Random Binary Sequence (PRBS) according to ITU-T
Recommendation O.151 [27] while for SDH interface ITU-T Recommendation O.181 [28] test signal applies.
5.3.1 Transmitter power range
Transmitter maximum mean output power at reference point C' of the system block diagram (see figure 2) shall not
exceed +30 dBm (including tolerance and, if applicable, ATPC/RTPC influence).
Regulatory administrations may define nominal sub-ranges below this maximum limit.
NOTE: The technological evolution may result in equipment falling outside of the range(s) foreseen in this
clause. In this case the equipments of different output power sub-ranges are not considered to require
individual type approval, however their use is subject to individual national agreements.
A capability for output power level adjustment may be required for regulatory purposes, in which case the range of
adjustment, either by fixed or automatic attenuators, should be in steps of 5 dB or less.
5.3.2 Transmit power and frequency control
5.3.2.1 Automatic Transmit Power Control (ATPC)
ATPC is an optional feature. Equipment with ATPC will be subject to manufacturer declaration of ATPC ranges and
related tolerances. The manufacturer shall declare if the equipment is designed with ATPC as a fixed permanent feature.
Testing shall be carried out with output power level corresponding to:
- ATPC set manually to a fixed value for system performance (see clauses 5.5 and 5.6);
- ATPC set at maximum available power for transmit performance (see clause 5.3).
It shall be verified that the emitted RF spectrum is within the absolute RF spectrum mask evaluated for the maximum
available output power of the equipment, including the attenuation introduced by RTPC, if any.
NOTE: Where the use of ATPC is considered compulsory for regulatory purposes the transmitter output power
should meet the spectrum mask limits throughout the ATPC range.
ETSI
15 ETSI EN 300 198 V1.5.1 (2002-07)
5.3.2.2 Remote Transmit Power Control (RTPC)
RTPC is an optional feature. Equipment with RTPC will be subject to manufacturer declaration of RTPC ranges and
related tolerances. Testing shall be carried out with output power level corresponding to:
- RTPC set to the maximum nominal power for transmit performance (see clause 5.3) and for system performance
(see clauses 5.5 and 5.6);
- the RF spectrum mask shall be verified in three points (low, medium, and high) of the RTPC power excursion
and with ATPC set to maximum available power (if any). When these spectrum measurements are made
difficulties may be experienced. Actual measurement methods shall be addressed in further investigations and
will be defined in the conformance testing standard, EN 301 126-1 [2].
RTPC range should be restricted, taking into account the wideband noise generated by the transmitter chain, to ensure
the spectrum mask requirements are met throughout the transmitter output power range.
NOTE: Where the use of ATPC is considered compulsory for regulatory purposes the transmitter output power
should meet the spectrum mask limits throughout the ATPC range.
5.3.2.3 Remote Frequency Control (RFC)
RFC is an optional feature. Equipment with RFC will be subject to manufacturer declaration of RFC ranges and related
change frequency procedure. Testing shall be carried out including:
- RFC setting procedure at least for three frequencies (lower, centre and higher of the covered range);
- RFC setting procedure shall not produce emissions outside the previous and final frequency spectrum mask.
5.3.3 Transmitter output power tolerance
The nominal output power shall be declared by the supplier.
The tolerance of the nominal output power shall be within:
• for systems operating within non-weather protected locations and within classes 3.3, 3.4 and 3.5 weather
protected locations:
- nominal output power ±2 dB.
• for systems operating within other classes of weather protected locations:
- nominal output power ±2 dB.
For class 5b systems refer to the annex D for further details.
5.3.4 Transmit Local Oscillator (LO) frequency arrangements
There shall be no requirement on transmit LO frequency arrangement.
5.3.5 RF spectrum mask
The spectrum masks are shown in figure 3a to 3d.
The 0 dB level shown on the spectrum masks relates to the spectral power density of the nominal centre frequency
disregarding residual carrier.
Masks shall be measured with a modulating base-band signal given by a PRBS signal given in ITU-T
Recommendation O.151 [27] in the case of PDH signal or ITU-T Recommendation O.181 [28] in the case of STM-1
signal.
ETSI
16 ETSI EN 300 198 V1.5.1 (2002-07)
The recommended spectrum analyser settings for measuring the RF spectrum mask detailed in figures 3a, 3b and 3c are
shown in table 2.
Table 2: Spectrum analyser settings for RF power spectrum measurement
Channel [MHz] 3,5 7 14 28 56
Spacing
Centre Actual Actual Actual Actual Actual
Frequency
Sweep width [MHz] 20 40 80 160 320
Scan time Auto Auto Auto Auto Auto
IF bandwidth [kHz] 30 30 30 100 100
Video [kHz] 0,1 0,3 0,3 0,3 0,3
bandwidth
+K1[dB]
Transmitter
Spectral
-10
Power Density
Class 2
[dB]
-23
-30
-45
-50
-60
f0 f1 f2 f3 f4 f5
NOTE: Frequency expressed from actual transmitter centre frequency [MHz].

Figure 3a: Limits of spectral power density for class 2 systems
ETSI
17 ETSI EN 300 198 V1.5.1 (2002-07)
+K1[dB]
Class 4
Transmitter
51Mbit/s in
Spectral
28 MHz spacing only
Power Density
-10
[dB]
Class 4
All other rates
-30
-35
-50
-60
f0 f1 f2 f3 f4 f5 f6
NOTE: Frequency expressed from nominal transmitter centre frequency [MHz].

Figure 3b: Limits of spectral power density for class 4 systems
+K1[dB]
Transmitter
Spectral
-10
Power Density
[dB]
-32
-35
See Table 4
Note 1
-50
-55
-60
(f5)
f0 f1 f2 f3 f4 f5 f6
NOTE: Frequency expressed from actual transmitter centre frequency [MHz].

Figure 3c: Limits of spectral power density for Class 5a systems
ETSI
18 ETSI EN 300 198 V1.5.1 (2002-07)

+K1[dB]
Transmitter
Spectral
Power Density -10
[ dB]
-32
See Table 4
-36 Note 1
-45
-50
-55
-60
(f6)
fo f1 f2 f3 f4 f5 f6 f7
NOTE: Frequency expressed from actual transmitter centre frequency [MHz].

Figure 3d: Limits of spectral power density for Class 5b systems
Due to limitations of some spectrum analysers, difficulties may be experienced when testing high capacity/wideband
systems. In this event, the following options are to be considered: measurement using high performance spectrum
analyser, use of notch filters and two-step measurement technique. Where difficulties are experienced, the plots of one
test conducted at ambient and environmental extremes may be produced as evidence to conformance to the spectrum
mask.
Reference frequencies f 1 to f 7 and relative attenuation K1[dB] are reported in tables 3a, 3b and 3c for the bit rate and
channel spacing foreseen.
Table 3a: Spectrum mask frequency limits
Spectrum Bit-rate Channel Figure K1 f 1 f 2 f 3 f 4 f 5 f 6 f 7
efficiency [Mbit/s] spacing [dB] [MHz] [MHz] [MHz] [MHz] [MHz] [MHz] [MHz]
class [MHz]
2 3,5 +1 1,3 2 2,3 4,3 8,75 n.a. n.a.
2 × 2 3,5 +1 1,4 2,8 3,5 7 8,75 n.a. n.a.
2 8 7 3a +1 2,8 5,6 7 14 17,5 n.a. n.a.
2 × 8 14 +1 5,6 11,2 14 28 35 n.a. n.a.
34 28 [phone] n.a. n.a.
51 56 [phone] n.a. n.a.
51 28 +1 7,5 10,5 12,5 22 30 70 n.a.
8 3,5 +1 1,4
...