EN 50289-1-13:2004

SLOVENSKI SIST EN 50289-1-13:2004

STANDARD
september 2004
Komunikacijski kabli – Specifikacije preskusnih metod – 1-13. del: Električne
metode preskušanja – Sklopno dušenje ali dušenje taslona ranžirnih kablov /
koaksialnih kabelskih napeljav / kablov predhodno opremljenih s konektorji *
Communication cables - Specifications for test methods - Part 1-13. del: Electrical
test methods - Coupling attenuation or screening attenuation of patch cords/coaxial
cable assemblies/pre- connectorised cables
ICS 33.120.20 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 50289-1-13
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004
ICS 33.120.10
English version
Communication cables –
Specifications for test methods
Part 1-13: Electrical test methods –
Coupling attenuation or screening attenuation of patch cords /
coaxial cable assemblies /
pre-connectorised cables
Câbles de communication –  Kommunikationskabel –
Spécifications des méthodes d'essai Spezifikationen für Prüfverfahren
Partie 1-13: Méthodes d'essais électriques – Teil 1-13: Elektrische Prüfverfahren –
Affaiblissement de couplage ou Kopplungsdämpfung oder
affaiblissement de blindage des cordons Schirmdämpfung für Rangierschnüre,
de raccordement / des ensembles de câbles koaxiale konfektionierte Kabel,
coaxiaux / des câbles à pré-connecteurs konfektionierte Kabel

This European Standard was approved by CENELEC on 2004-02-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50289-1-13:2004 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 46X, Communication
cables.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as EN 50289-1-13 on 2004-02-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-02-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-02-01
__________
– 3 – EN 50289-1-13:2004
Contents
1 Scope. 4
2 Normative references.4
3 Definitions . 4
4 Test method . 4
4.1 Equipment . 4
4.1.1 General . 4
4.1.2 Balun requirements. 5
4.1.3 Test head and extension cable requirements. 6
4.1.4 Impedance matching. 7
4.2 Test sample. 7
4.2.1 Length of the patch cords under test . 7
4.2.1.1 Single ended patch cords . 7
4.2.1.2 Double ended patch cords . 7
4.2.2 Length of extension cables connected to patch cord under test . 7
4.2.3 Tested length. 7
4.2.4 Preparation of extension cable and test head . 7
4.2.4.1 Balanced patch cords . 7
4.2.4.2 Multi-conductor patch cords. 8
4.2.4.3 Coaxial patch cords. 8
4.3 Calibration procedure . 8
4.4 Test set-up . 8
4.4.1 General . 8
4.4.2 Test set-up verification. 10
4.4.1.1 Determination of measurement sensitivity of the set-up. 10
4.4.1.2 Verification of test set-up calibration . 11
4.4.1.3 Pulling force on patch cords . 11
4.5 Measuring procedure . 11
5 Expression of test results. 11
6 Test report. 12
6.1 General . 12
6.2 Evaluation of test results (informative) . 12
Figure 1 – Measurement of surface wave at near end of patch cord .5
Figure 2 – Termination of extension cables.8
Figure 3 – Test set-up for a near end measurement of a double ended patch cord .9
Figure 4 – Test set-up for a near end measurement of a single ended patch cord .9
Figure 5 – Test set-up for a near end measurement of a double ended patch cord .10
Figure 6 – Validation test set-up .11
Figure 7 – Typical measurement of an unscreened balanced patch cord .13
Figure 8 – Typical measurement of a screened balanced patch cord .13
Table 1 – Balun performance characteristics (30 MHz to 1 GHz) .6

1 Scope
This Part 1-13 of EN 50289 details the method of test to determine the coupling attenuation or screening
attenuation for patch cords, coaxial cable assemblies and pre-connectorised cables used in analogue and
digital communication systems. It is to be read in conjunction with EN 50289-1-6.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 50289-1-6 Communication cables – Specifications for test methods — Part 1-6: Electrical test
methods – Electromagnetic performance
1)
EN 50290-1-2 Communication cables — Part 1-2: Definitions
3 Definitions
For the purposes of this European Standard, the definitions of EN 50290-1-2 and EN 50289-1-6 apply.
In this document the cords under test (patch cords, coaxial cable assemblies, pre-connectorised cables)
are denoted ‘patch cords’.
4 Test method
4.1 Equipment
4.1.1 General
See EN 50289-1-6, subclause 9.2.1.1 and Figure 1 below.
For patch cord testing two test head connecting hardware modules and extension cables are needed for
measurement of a patch cord (see 4.1.3). The two test heads are denoted near end test head and far end
test head.
1)
Under consideration.
– 5 – EN 50289-1-13:2004
±
600 cm 10 cm
Key
0 signal generator, output impedance Z 8 absorber (ferrite tube) of the clamp, operational
attenuation > 10 dB
1 patch cord under test, nominal characteristic 9 absorber (or second clamp), operational attenuation
impedance Z > 10 dB
2 outer circuit of patch cords under test, impedance Z 10 termination of the far end extension cable connected
to patch cord under test
3 absorbing clamp, impedance Z 11 shield of signal generator and balun if needed for
high dynamic range
4 measuring receiver 12 reflector plate
5 balun (if applicable) 13 extension cable connected through test head to
patch cord under test
6 current transformer of the clamp 14 Test head for termination of patch cord at near end
7 measuring receiver cable (use the same in 15 Test head for termination of patch cord at far end
measurement and calibration)
Figure 1 – Measurement of surface wave at near end of patch cord
4.1.2 Balun requirements
For measurement of balanced patch cords, a means for generating balanced signals shall be provided. If
the generator is unbalanced, this may be performed by the use of a balun or 180° power splitter.
The minimum requirements for this device are specified in Table 1.
The attenuation of the balun shall be kept as low as possible because it will limit the dynamic range of the
coupling attenuation or screening attenuation measurements.

Table 1 – Balun performance characteristics (30 MHz to 1 GHz)
Parameter Value
a
Impedance, primary 50 Ω (unbalanced)
b
Impedance, secondary 100 Ω or 150 Ω (balanced)
c
Operational attenuation
≤ 10 dB
(including matching pads if used)
Return loss, bi-directional
≥ 6 dB
Power rating To accommodate the power of the generator and
amplifier (if applicable)
d
Output signal balance
≥ 50 dB from 30 MHz to 100 MHz
≥ 30 dB from 100 MHz to 1 GHz
a
Primary impedance may differ if necessary to accommodate analyzer outputs other than 50 Ω.
b
Balanced outputs of the test baluns shall be matched to the nominal impedance of the balanced patch cord / cable pair. 100 Ω
shall be used for termination of 120 Ω cabling.
c
The operational attenuation of a balun shall be mathematically deduced from 3 operational attenuation measurements with
3 baluns back-to-back.
d
Measured per ITU-T Recommendations G.117 and O.9.

4.1.3 Test head and extension cable requirements
Unscreened balanced test heads and extension cables
...