EN 50289-1-1:2017

SLOVENSKI STANDARD
01-maj-2017
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SIST EN 50289-1-1:2002
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Communication cables - Specifications for test methods - Part 1-1: Electrical test
methods - General requirements
Kommunikationskabel - Spezifikationen für Prüfverfahren Teil 1-1: Elektrische
Prüfverfahren - Allgemeine Anforderungen
Câbles de communication - Spécifications des méthodes d'essai Partie 1-1: Méthodes
d'essais électriques - Prescriptions generals
Ta slovenski standard je istoveten z: EN 50289-1-1:2017
ICS:
33.120.20 äLFHLQVLPHWULþQLNDEOL Wires and symmetrical
cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50289-1-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 33.120.20 Supersedes EN 50289-1-1:2001
English Version
Communication cables - Specifications for test methods - Part 1-
1: Electrical test methods - General requirements
Câbles de communication - Spécifications des méthodes Kommunikationskabel - Spezifikationen für Prüfverfahren
d'essai Partie 1-1: Méthodes d'essais électriques - Teil 1-1: Elektrische Prüfverfahren - Allgemeines
Prescriptions generals
This European Standard was approved by CENELEC on 2016-12-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50289-1-1:2017 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Sampling . 5
4.1 Cable under test (CUT) . 5
4.2 Pre-conditioning . 5
5 Tests . 5
6 Test conditions . 5
6.1 Ambient temperature . 5
6.2 Tolerance on temperature values . 5
6.3 Frequency and waveform of test voltages for dielectric strength test. 5
6.4 Frequency range and stability for frequency related measurements . 6
6.5 Measurement on drums . 6
7 Measurement methods and equipment. 6
7.1 Calibration . 6
7.2 Requirements for balanced to unbalanced converters (Baluns) . 6
7.3 Balun-less test method . 8
8 Test report . 14
Annex A (informative) Example derivation of mixed mode parameters using the modal decomposition
technique . 15
Annex B (informative) Verification artefacts . 18
Bibliography . 21
European foreword
This document [EN 50289-1-1:2017] has been prepared by CLC/TC 46X "Communication cables".
The following dates are fixed:
• latest date by which this document has to be (dop) 2017-09-16
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards conflicting (dow) 2019-12-16
with this document have to be withdrawn
This document supersedes EN 50289-1-1:2001.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
EN 50289-1, Communication cables — Specifications for test methods, is currently composed with the
following parts:
— Part 1-1: Electrical test methods — General requirements;
— Part 1-2: Electrical test methods — DC resistance;
— Part 1-3: Electrical test methods — Dielectric strength;
— Part 1-4: Electrical test methods — Insulation resistance;
— Part 1-5: Electrical test methods — Capacitance;
— Part 1-6: Electrical test methods — Electromagnetic performance;
— Part 1-7: Electrical test methods — Velocity of propagation;
— Part 1-8: Electrical test methods — Attenuation;
— Part 1-9: Electrical test methods — Unbalance attenuation (longitudinal conversion loss, longitudinal
conversion transfer loss);
— Part 1-10: Electrical test methods — Crosstalk;
— Part 1-11: Electrical test methods — Characteristic impedance, input impedance, return loss;
— Part 1-12: Electrical test methods — Inductance;
— Part 1-13: Electrical test methods — Coupling attenuation or screening attenuation of patch cords /
coaxial cable assemblies / pre-connectorised cables;
— Part 1-14: Electrical test methods — Coupling attenuation or screening attenuation of connecting
hardware;
— Part 1-15: Electromagnetic performance — Coupling attenuation of links and channels (Laboratory
conditions);
— Part 1-16: Electromagnetic performance — Coupling attenuation of cable assemblies (Field conditions);
— Part 1-17: Electrical test methods — Exogenous Crosstalk ExNEXT and ExFEXT.
1 Scope
This European Standard specifies the electrical test methods for cables used in analogue and digital
communication systems.
Part 1 of EN 50289 consists of the following documents:
– Part 1-1 General requirements
– Part 1-2 DC resistance
– Part 1-3 Dielectric strength
– Part 1-4 Insulation resistance
– Part 1-5 Capacitance
– Part 1-6 Electromagnetic performance
– Part 1-7 Velocity of propagation
– Part 1-8 Attenuation
– Part 1-9 Unbalance attenuation (longitudinal conversation loss, longitudinal conversion transfer loss)
– Part 1-10 Crosstalk
– Part 1-11 Characteristic impedance, input impedance, return loss
– Part 1-12 Inductance
– Part 1-13 Coupling attenuation or screening attenuation of patch cords / coaxial cable assemblies /
pre-connectorised cables
– Part 1-14 Coupling attenuation or screening attenuation of connecting hardware
– Part 1-15 Coupling attenuation of links and channels (Laboratory conditions)
– Part 1-16 Coupling attenuation of cable assemblies (Field conditions)
– Part 1-17 Exogenous Crosstalk ExNEXT and ExFEXT
Further test details (e.g. temperature, duration) and/or test requirements are given in the relevant cable
standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50289-1-9, Communication cables - Specifications for test methods - Part 1-9: Electrical test methods -
Unbalance attenuation (longitudinal conversion loss, longitudinal conversion transfer loss)
EN 50290-1-2, Communication cables - Part 1-2: Definitions
EN 61169-16, Radio-frequency connectors - Part 16: Sectional specification - RF coaxial connectors with
inner diameter of outer conductor 7 mm (0,276 in) with screw coupling - Characteristic impedance 50 ohms
(75 ohms) (type N)(IEC61169-16)
IEC 60169-15, Radio-frequency connectors — Part 15: R.F. coaxial connectors with inner diameter of outer
conductor 4.13 mm (0.163 in) with screw coupling — Characteristic impedance 50 ohms (Type SMA)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 50290-1-2 and the following apply.
3.1
single ended
measurement with respect to a fixed potential, usually ground
3.2
mixed mode (parameter or measurement)
parameters or measurements containing differential mode, common mode, and intermodal S-matrices
3.3
intermodal (parameter or measurement)
parameter or measurement that either sources on the common mode and measures on the differential mode
or, sources on the differential mode and measures on the common mode
4 Sampling
4.1 Cable under test (CUT)
Unless otherwise specified in the relevant test method, the length of CUT shall be selected to take into
account the dynamic range of the measuring equipment and the frequency range specified to yield the
required level of accuracy. The length shall be measured with better accuracy than 1 % unless otherwise
stated in the relevant cable specification.
4.2 Pre-conditioning
The CUT shall be pre-conditioned at a constant ambient temperature for such time as to allow the specimen
temperature to stabilize according to 6.1.
5 Tests
The tests required and performance characteristics applicable to each type of cable are given in the relevant
cable standard.
6 Test conditions
6.1 Ambient temperature
Tests shall be made at an ambient temperature within the range 15°C to 35°C unless otherwise specified.
6.2 Tolerance on temperature values
Unless otherwise specified in the relevant specification, the tolerance on temperature shall be ± 2°C.
6.3 Frequency and waveform of test voltages for dielectric strength test
Unless otherwise specified, the test voltage shall be in the frequency range 40 Hz to 62 Hz of approximately
sine-wave form, the peak ratio value/r.m.s. value being equal to 2 with a tolerance of ± 7 %. The values
given are r.m.s.
6.4 Frequency range and stability for frequency related measurements
The required frequency range is specified in the relevant sectional specification.
The sweep shall be linear or logarithmic such that:
ff−
stop start
f = for linear sweep and
step
n − 1
11/ n−
( )

f
stop

K = for logarithmic sweep
f
start

where
lowest specified frequency;
f
start
highest specified frequency;
f
stop
linear frequency increment, constant over the whole specified frequency range;
f
step
n
number of frequency points;
ratio of two successive frequency points at logarithmic sweep.
K
The minimum number of frequency points shall be chosen to point out frequency dependent cable
characteristics. Unless otherwise specified the minimum number of frequency points shall be
200 points in the range 10 kHz – 100 kHz,
200 points in the range 100 kHz – 1 MHz,
200 points in the range 1 MHz – 16 MHz,
400 points in the range 1 MHz – 100 MHz,
800 points in the range 1 MHz – 600 MHz,
1 000 points in the range 1 MHz – 1 000 MHz,
1 600 points in the range 1 MHz – 2 000 MHz.
6.5 Measurement on drums
Unless otherwise specified or special cable-specific characteristics need to be taken into account, the cables
shall be measured on drums or coils.
7 Measurement methods and equipment
7.1 Calibration
The equipment calibration shall be considered as a part of the quality system.
7.2 Requirements for balanced to unbalanced converters (Baluns)
Several classes of baluns with different performance levels are defined in order to facilitate measurements in
different frequency ranges with commercially available baluns as appropriate. The baluns may be balun
transformers or 180° hybrids with attenuators to improve matching if needed (see Figure 1).
Figure 1 — 180° hybrid used as a balun
Baluns shall be RFI shielded and shall comply with the requirements given in Table 1. Depending on the
frequency range different requirements are specified. For frequencies higher than 1 GHz balunless
measurement technique is recommended (see clause 7.3).
Generally, it is advantageous to choose a balun with the same common mode impedance as the cable under
test. However, in practice this is hardly possible as it is unreasonable to provide separate measurements
equipment for each cable type. Often the best performance for differential mode is achieved when the centre
tap of the secondary winding of the balun is grounded; meaning the nominal common mode impedance is
25 Ω. Then the results can directly be compared to results achieved by balunless measurement technique
when 50 Ω ports are used without mathematical impedance transformation of the latter results.
In case of balance measurement where the centre tap of the secondary winding of the balun cannot be
grounded, compare balance measurement results achieved with balun-based measurement technique to
results achieved with balunless measurements technique the procedures described in EN 50289-1-9 shall be
considered. Unless otherwise specified the rules specifying the common mode termination for balance
measurements according to EN 50289-1-9 shall be applied in case of doubt. The reference common mode
impedance specified accordingly may be different to the reference common mode impedance of the cabling
system the cable is intended to be used for.
Table 1 — Test balun performance characteristics
Parameter Class A 250 Class A 500 Class A 1000 Class A 2000
1 to 250 MHz 1 to 500 MHz 1 to 1 000 MHz 1 to 2 000 MHz
Impedance, 50 Ω unbalanced 50 Ω unbalanced 50 Ω unbalanced 50 Ω unbalanced
a
primary
Impedance, Matched balanced Matched balanced Matched balanced Matched balanced
d d d d
secondary
e
Insertion loss 3 dB maximum 2 dB maximum 3 dB maximum 3 dB, 1-3 MHz
2 dB, 3-15 MHz
2 dB, 15-1 000
MHz
3 dB, 1 000-2 000
MHz
Return loss 20 dB 12 dB, 1-15 MHz 12 dB, 4-15 MHz 8 dB, 1-3 MHz
secondary,
20 dB, 15-500 MHz 20 dB, 15-550 MHz 12 dB, 3-15 MHz
minimum
17,5 dB, 550-600 20 dB, 15-1 000

MHz MHz
10 dB, 600-1000 18 dB, 1 000-2 000
MHz MHz
Return loss, 10 dB 15 dB, 1-15 MHz 15 dB, 4-15 MHz 6 dB, 1-3 MHz
b
common mode ,
20 dB, 15-400 MHz 20 dB, 15-400 MHz 10 dB, 3-500 MHz
minimum
15 dB, 400-500 15 dB, 400-600 ffs., 500-2 000

MHz MHz MHz
10 dB, 600-1000
MHz
Power rating 0,1 Watt minimum 0,1 Watt minimum 0,1 Watt minimum 0,1 Watt minimum
Longitudinal 60 dB 60 dB, 1-100 MHz 60 dB, 4-350 MHz 60 dB, 1-100 MHz
c
balance ,
50 dB, 100-500 50 dB, 350-600 50 dB, 100-500
minimum
MHz MHz MHz
40 dB, 600-1 000 42 dB, 500-1 000
MHz MHz
34 dB, 1 000-2 000
MHz
Output signal 50 dB 50 dB 60 dB, 4-350 MHz ffs.
c
balance ,
50 dB, 350-600
minimum
MHz
40 dB, 600-1 000
MHz
Common mode 50 dB 50 dB 50 dB, 4-600 MHz 50 dB, 1-500 MHz
c
rejection ,
40 dB, 600-1 000 42 dB, 500-1 000
minimum
MHz MHz
34 dB, 1 000-2 000
MHz
a
Primary impedance may differ, if necessary to accommodate analyser outputs other than 50 Ω.
b
Measured either by connecting the balanced output terminals together and measuring the return loss.
The unbalanced balun input terminal shall be terminated by a 50 Ω load. Or measured at the common-
mode port – if available – while terminating the balanced port for differential and common mode.
c
Measured per ITU-T Recommendations G.117 and O.9.
d
For 120 Ω cables, 120 Ω baluns will be used only in cases where it is requested by the user. Usually
100 Ω baluns will be used.
e
In case separate attenuators are used, they shall be excluded from the insertion loss measurement.
NOTE An overview of the configuration for the measurement of certain parameters is provided by
EN 60512-27-100.
7.3 Balun-less test method
7.3.1 Test equipment
The test procedures hereby described require the use of a vector network analyser or similar test equipment.
The analyser shall have the capability of full 4-port calibration and shall include the capability for isolation
calibrations. The analyser shall cover at least the full frequency range of the cable or cabling under test
(CUT).
Measurements shall be taken using a mixed mode test set-up, which is often referred to as an unbalanced,
modal decomposition or balun-less setup. This allows measurements of balanced devices without use of an
RF balun in the signal path. With such a test set-up, all balanced and unbalanced parameters can be
measured over the full frequency range.
Such a configuration allows testing with both a common or differential mode stimulus and responses,
ensuring that intermodal parameters can be measured without reconnecti
...