HD 351.1 S1:1977

SLOVENSKI STANDARD
SIST HD 351.1 S1:2004
01-januar-2004
[Not translated]
Rigid precision coaxial lines and their associated precision connectors - Part 1: General
requirements and measuring methods (IEC 60457-1:1974)
Präzisionsrohrleitungen und zugehörige Präzisionssteckverbinder - Teil 1: Allgemeine
Anforderungen und Meßverfahren (IEC 60457-1:1974)
Lignes coaxiales rigides de précision et leurs connecteurs de précision associés - Partie
1: Règles générales et méthodes de mesure (CEI 60457-1:1974)
Ta slovenski standard je istoveten z: HD 351.1 S1:1977
ICS:
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
SIST HD 351.1 S1:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 351.1 S1:2004
NORME
CEI
INTERNATIONALE
IEC
60457-1
INTERNATIONAL
Première édition
STANDARD
First edition
1974-01
Lignes coaxiales rigides de précision
et leurs connecteurs de précision associés
Première partie:
Règles générales et méthodes de mesure
Rigid precision coaxial lines
and their associated precision connectors
Part 1:
General requirements and measuring methods
© IEC 1974 Droits
de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication
ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par
aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris
la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit
de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
IEC Men
ayHaponHae 3JIeKTpOTeXH144eCNaR HOMHCCHA
Pour prix, voir catalogue en vigueur
• •
For price, see current catalogue

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3
CONTENTS
Page
5
FOREWORD
5
PREFACE
Clause
7
1. Scope
7
2. Object
SECTION ONE - GENERAL
7
3. Terminology
15
4. Type designation
15
5. Standard atmospheric conditions for testing
15
6. Visual inspection
17
7. Marking
MECHANICAL REQUIREMENTS
SECTION Two —
17
8. Dimensions
17
9. Curvature
10. Forces on inner conductors 19
11. Bending moment on outer conductor 19
12. Centre contact deflection 19
13. Mechanical endurance test 21
SECTION THREE - ELECTRICAL REQUIREMENTS
14. Characteristic impedance 21
15. Attenuation 21
16. Reflection coefficient r and voltage standing-wave ratio s 23
17. Contact resistance 23
18. Screening efficiency of connectors (leakage) 23
19. Power rating 25
Insulation resistance 25
20.
Voltage proof 25
21.
SECTION FOUR - ENVIRONMENTAL REQUIREMENTS
Dry heat 27
22.
23. Cold 27
24. Rapid change of temperature 27

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
RIGID PRECISION COAXIAL LINES
AND THEIR ASSOCIATED PRECISION CONNECTORS
Part 1: General requirements and measuring methods
FOREWORD
1) The formal decisions or agreements of the I E C on technical matters, prepared by Technical Committees on which all the
National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3)
In order to promote international unification, the I E C expresses the wish that all National Committees should adopt
the text of the I E C recommendation for their national rules in so far as national conditions will permit. Any divergence
between the I E C recommendations and the corresponding national rules should, as far as possible, be clearly
indicated in the latter.
PREFACE
This recommendation has been prepared by Sub-Committee 46D, Connectors for R.F. Cables, of I E C
Technical Committee No. 46, Cables, Wires and Waveguides for Telecommunication Equipment.
A first draft was discussed at the meeting held in The Hague in 1970. As a result of this meeting, a final
draft, document 46D(Central Office)5, was submitted to the National Committees for approval under the
Six Months' Rule in July 1971. Amendments, document 46D(Central Office)14, were submitted to the
National Committees for approval under the Two Months' Procedure in September 1972.
The following countries voted explicitly in favour of publication:
Australia Korea (Democratic People's
Belgium Republic of)
Czechoslovakia Netherlands
Poland
Denmark
France Sweden
Germany Switzerland
Hungary Turkey
Israel United Kingdom
Italy United States of America
Japan

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RIGID PRECISION COAXIAL LINES
AND THEIR ASSOCIATED PRECISION CONNECTORS
Part 1: General requirements and measuring methods
This recommendation shall be used in conjunction with:
— I E C Publication 68, Basic Environmental Testing Procedures;
— ISO Recommendation R 286;
— ISO Recommendation R 370.
The schedule of test shall be specified in the detail specification.
1. Scope
This recommendation relates to rigid precision coaxial lines and their associated precision
connectors for instrumentation, to be used within the limits for temperature, humidity and
pressure as given in the standard atmospheric conditions for testing in Publication 68-1, Part 1:
General. Precision connectors can be of the hermaphroditic type, flange type or of the pin and
socket type.
This recommendation covers requirements for precision connectors mounted on rigid precision
coaxial lines and gives mechanical data for coupling mechanism.
2. Object
The aim of this recommendation is to specify the following for rigid precision coaxial lines
and their associated connectors:
a) the requirements necessary to ensure compatibility and, as far as essential, interchangeability;
b) the test methods;
c) the dimensional deviations allowed to ensure adequate electrical performance.
SECTION ONE — GENERAL
Terminology
3.
3.1 Technical terms
In accordance with the International Electrotechnical Vocabulary (I.V.E.), I E C Publication 50.
In addition, the following terms are used in this recommendation.
3.1.1. Size
For precision lines, the size is defined as the rounded-off inner diameter of the outer conductor,
expressed in millimetres.
3.1.2 . Wall thickness
The basic wall thickness is defined as half the difference between nominal outside and inside
diameters.

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3.1.3 Ellipticity
of inner or outer conductor is defined by the formula:
Ellipticity "E"
_ Dmax—Dmin
E,
Dnom
where:
E denotes the ellipticity of either outer or inner conductor
nominal inside diameter of outer conductor or the nominal outside diameter of centre
Dnom =
conductor
largest measured diameter either of outer or centre conductor
D. =
Dmin = smallest measured diameter either of outer or centre conductor
These measurements are to be made at the same cross-section.
3.1.4 Excentricity
De
Excentricity e =
D
Ae = deviation of the axis of the outside diameter of the centre conductor from the axis of the
inside diameter of the outer conductor.
Curvature
3.1.5
Curvature is defined as the maximum deviation of the actual axis of the coaxial line from a
straight line of specified length connecting two points on that axis.
3.1.6 Attenuation and insertion loss
The attenuation of a coaxial line is defined as the reduction of transmitted power expressed
in decibels per unit of length. In the case of connectors, the specifications refer to the insertion
loss of a mated pair.
Frequency range
3.1.7
Cut-off frequency
3.1.7.1
TEN
The theoretical cut-off frequency of a coaxial line is the calculated frequency at which the
mode theoretically first occurs (the practical value will be different from this).
3.1.7.2 Maximum frequency
The maximum frequency up to which all the requirements shown in the detail specification
are maintained.
Laboratory precision connector (LPC)
3.1.8
The laboratory precision connector (LPC) is a precision connector with no dielectric support
for use with air-dielectric line standards.
General precision connector (GPC)
3.1.9
The general precision connector (GPC) is a precision connector with a self-contained dielectric
support and all component parts captive for general use. The GPC must be capable of supporting
the unsupported LPC inner conductor.

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3.1.10 Centre contact
Hermaphroditic connectors
3.1.10.1
Hermaphroditic connectors have a centre conductor contact which is normally spring-loaded
in the axial direction.
Flange connectors
3.1.10.2
Flange connectors have a component, normally incorporating resilient members on both ends
with or without a dielectric anchoring member, for connecting together two tubular or solid
rigid centre conductors.
3.1.10.3 Pin and socket connectors
Pin and socket connectors have a pin and socket centre conductor design, the socket or pin
of which may or may not be slotted.
3.1.11 Outer conductor connection
3.1.11.1 Hermaphroditic connectors
Hermaphroditic connectors normally have a standardized interface which is provided with a
thread for screwing on the coupling mechanism. In certain cases, alternative coupling mechanisms
are specified in the detail specification.
3.1.11.2 Flange connectors
Flange connectors have a component normally attached to a rigid outer conductor and used
for connection to another flange mounted to another rigid outer conductor.
3.1.11.3 Pin and socket connectors
Pin and socket connectors have a standardized interface consisting of butting and/or wiping
electrical conductors and a coupling mechanism.
3.1.11.4 Interface
Interface is the expression for a specific construction of the end of a precision coaxial line
which allows assembling of different coupling mechanisms on the precision coaxial line.
3.1.12 Mated connector set
3.1.12.1 Hermaphroditic connectors
A pair of hermaphroditic connectors consists of two outer conductor connecting pieces, each
with interface, on which a coupling mechanism is mounted, and of two normally spring-loaded
centre contacts.
3.1.12.2 Flange connectors
The junction of two lengths of line connected together, consisting of one centre contact element
and two outer conductors with flanges.

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3.1.12.3 Pin and socket connectors
Pin and socket connectors are an electrically and mechanically matched pair of connectors
containing the necessary outer conductors, centre conductors, dielectric supports and coupling
mechanisms. Any connector which will not mate with an identical connector shall be considered
a pin and socket connector.
3.1.13 Reflection coefficient
Where the term "reflection coefficient" is used in this recommendation, it refers to the
properties measured on assemblies of rigid lines, fed from and terminated with their nominal
impedance.
3.1.14 Power and voltage ratings
The power rating or voltage rating of a line and connectors is that value of transmitted power
or voltage which permits satisfactory operation of the line assembly and provides an adequate
safety factor below the point where injury or appreciably shortened life will occur, as specified
in the detail specification.
3.1.15 Electrical length
3.1.15.1 Electrical length of the coaxial line
The electrical length of the coaxial line is defined as the electrical length between the butt
contacts of the outer conductor of the line.
3.1.15.2 Electrical length of a mated pair of connectors
Thè electrical length of a mated pair of connectors is defined as the electrical length measured
between butting contacts of the outer conductor of the attached lines.
Note. — The mechanical and electrical reference planes will be indicated in the detail specification.
3.2 Definitions relating to testing procedures
3.2.1 Type
A type comprises products having similar design features, manufactured by the same techniques
and falling within the manufacturer's usual range of ratings for these products.
Notes 1. — Mounting accessories are ignored, provided they have no significant effect on the test results.
2. — Ratings cover the combination of:
electrical ratings;
a)
b) sizes;
c) environmental group.
3. — The limits of the range of ratings shall be agreed upon between user and manufacturer.
3.2.2 Type tests
The type tests of a product are the complete series of tests to be carried out on a number of
specimens representative of the type, with the object of determining whether a particular manu-
facturer can be considered able to meet the detail specification.

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3.2.3 Type approval *
Type approval is the decision by the prop
...