EN 16602-70-18:2014

Space product assurance - Preparation, assembly and mounting of RF coaxial cables

This Standard defines the technical requirements and quality assurance provisions for the assembly and mounting of high­reliability, radio­frequency (RF) coaxial­cable interconnections for use as transmission lines in spacecraft and associated equipment.
In general, these assemblies are designed for low­loss, stable operation from the relatively low frequencies through the higher frequencies
in the microwave regions.
These transmission­line cables should not be confused with low­frequency cables with conductive sheaths (usually copper braid), which are used in applications where shielding of the centre conductors from the surrounding electrical ambient is required. The interconnection of
those shielded cables, not covered by the present standard, is covered in ECSS-Q-ST-70-08.
This standard may be tailored for the specific characteristics and constrains of a space project in conformance with ECSS-S-ST-00.

Raumfahrtproduktsicherung - Vorbereitung, Zusammenbau und Befestigung von RF-Koaxial-Kabeln

Assurance produit des projets spatiaux - Préparation, assemblage et montage des câbles radiofréquence coaxiaux

La présente norme définit les exigences techniques et les dispositions d’assurance qualité relatives à l'assemblage et au montage d'interconnexions en câble coaxial radiofréquences (RF) destinées à servir de lignes de transmission à bord d'engins spatiaux et d'équipements associés.
En général, ces ensembles sont conçus pour un fonctionnement stable, à faibles pertes, allant de fréquences relativement basses jusqu'à des fréquences plus élevées dans la gamme des micro-ondes.
Il convient de ne pas confondre ces câbles de ligne de transmission avec les câbles basse fréquence à gaines conductrices (en général une tresse de cuivre), utilisés dans les applications où il est exigé de disposé d'un blindage des conducteurs centraux pour les isoler de l'environnement électrique ambiant. L'interconnexion de ces câbles blindés, non couverte par la présente norme, est traitée dans l'ECSS-Q-ST-70-08.
La présente norme peut être adaptée aux caractéristiques et contraintes spécifiques à un projet spatial, selon la norme ECSS-S-ST-00.

Zagotavljanje varnih proizvodov v vesoljski tehniki - Pripravljanje, sestavljanje in pritrjevanje RF-koaksialnih kablov

Ta standard določa tehnične zahteve in določbe za zagotavljanje kakovosti za sestavljanje in pritrjevanje visoko zanesljivih medsebojnih povezav z RF-koaksialnimi kabli za uporabo kot prenosni vodi v vesoljskih plovilih ter povezani opremi. Na splošno so ti sestavi namenjeni za stabilno delovanje z majhnimi izgubami od razmeroma nizkih frekvenc prek višjih frekvenc v mikrovalovnih regijah. Ti kabli za prenosne vode naj se ne bi zamenjali z nizkofrekvenčnimi kabli s prevodnimi plašči (običajno bakreni oplet), ki se uporabljajo, kadar je potrebno ščitenje središčnih vodnikov pred bližnjo električno okolico. Medsebojno povezovanje teh zaščitenih kablov, ki ni obravnavano v tem standardu, je obravnavajo v standardu ECSS-Q-ST-70-08. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00.

General Information

• Status: Published
• Publication Date: 21-Oct-2014
• Withdrawal Date: 29-Apr-2015
• ICS: 49.090 - On-board equipment and instruments
• ICS: 49.140 - Space systems and operations
• Technical Committee: CEN/CLC/TC 5 - Space
• Drafting Committee: CEN/CLC/TC 5 - Space
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 03-Jun-2020
• Due Date: 03-Jun-2020
• Completion Date: 03-Jun-2020
• Mandate: M/496 - Mandate addressed to CEN, CENELEC and ETSI to develop standardisation regarding space industry (Phase 3 of the process)
• Ref Project: SIST EN 16602-70-18:2015 - Space product assurance - Preparation, assembly and mounting of RF coaxial cables

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2015
Zagotavljanje varnih proizvodov v vesoljski tehniki - Pripravljanje, sestavljanje in
pritrjevanje RF-koaksialnih kablov
Space product assurance - Preparation, assembly and mounting of RF coaxial cables
Raumfahrtproduktsicherung - Vorbereitung, Zusammenbau und Befestigung von RF-
Koaxial-Kabeln
Assurance produit des projets spatiaux - Préparation, assemblage et montage des
câbles radiofréquence coaxiaux
Ta slovenski standard je istoveten z: EN 16602-70-18:2014
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 16602-70-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 49.090; 49.140
English version
Space product assurance - Preparation, assembly and mounting
of RF coaxial cables
Assurance produit des projets spatiaux - Préparation, Raumfahrtproduktsicherung - Vorbereitung, Zusammenbau
assemblage et montage des câbles radiofréquence und Befestigung von RF-Koaxial-Kabeln
coaxiaux
This European Standard was approved by CEN on 11 April 2014.

CEN and 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 CEN and 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 CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.

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

CEN-CENELEC Management Centre:
Avenue Marnix 17, B-1000 Brussels
© 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-18:2014 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms from other standards . 9
3.2 Terms specific to the present standard . 9
3.3 Abbreviated terms. 9
4 Principles and prerequisites of reliable soldered or crimped cable
connections . 10
4.1 Principles of reliable soldered or crimped semi-rigid cable connections . 10
4.2 Prerequisites for assembly and mounting of semi-rigid coaxial cables . 10
4.3 Alternative coaxial cable technologies . 11
5 Requirements . 12
5.1 Preparatory conditions . 12
5.1.1 Facility cleanliness . 12
5.1.2 Environmental conditions . 12
5.1.3 Lighting requirements . 13
5.1.4 Equipment and tools . 13
5.2 Material selection . 15
5.2.1 Solder . 15
5.2.2 Flux . 16
5.2.3 Solvents . 16
5.2.4 Cable selection . 17
5.2.5 Connector selection . 17
5.3 Preparation of semi-rigid cable . 18
5.3.1 General . 18
5.3.2 Inspection of cable . 18
5.3.3 Cutting cable to initial oversize length . 18
5.3.4 Cable forming and minimum bend radius . 18
5.3.5 Preconditioning heat treatment. 19
5.3.6 Trimming cable to final length . 20
5.3.7 Stripping the cable ends . 21
5.3.8 Inspection of stripped cable ends . 21
5.4 Preparation for soldering assembly of semi-rigid cables . 22
5.4.1 General . 22
5.4.2 Degolding and pretinning . 22
5.4.3 Solder preforms . 23
5.5 Assembly of connectors to RF coaxial cables . 24
5.5.1 Solder assembly of semi-rigid cables . 24
5.5.2 Crimp assembly of semi-rigid cables and other assembly techniques . 28
5.5.3 Completed assemblies . 28
5.6 Mounting of cables. 29
5.6.1 Semi-rigid cables with straight solder-type connectors . 29
5.6.2 Semi-rigid cables with right-angle connectors . 30
5.6.3 Other cable mounting technologies . 30
5.7 Process verification . 31
5.7.1 General . 31
5.7.2 Temperature cycling . 31
5.7.3 Vibration . 31
5.8 Quality assurance . 31
5.8.1 Data . 31
5.8.2 Nonconformance . 32
5.8.3 Calibration . 32
5.8.4 Traceability . 32
5.8.5 Workmanship standards. 32
5.8.6 Inspection . 32
5.8.7 Operator and inspector training and certification . 33
Annex A (normative) Logbook – DRD . 34
A.1 DRD identification . 34
A.1.1 Requirement identification and source document . 34
A.1.2 Purpose and objective . 34
A.2 Expected response . 34
A.2.1 Scope and content . 34
A.2.2 Special remarks . 34
Annex B (normative) Workmanship standards . 35
B.1 Overview . 35
B.2 Illustrations . 35
Annex C (informative) Graphical information . 37
C.1 Overview . 37
C.2 Typical cable cut-off fixture . 37
C.3 Typical cable-forming tool . 38
C.4 Approved and non-approved straight solder-type cable-end connectors . 39
C.5 Method of producing solder performs. 40
C.6 Centre contact assembly . 40
Bibliography . 41

Figures
Figure B-1 : Photograph showing non-captive nut and preferred solder fillet . 35
Figure B-2 : Microsection through preferred solder fillet, revealing full penetration of
solder path . 35
Figure B-3 : Unacceptable solder fillet dimensions . 36
Figure C-1 : Typical cable cut-off fixture . 37
Figure C-2 : Typical cable-forming tool . 38
Figure C-3 : Approved and non-approved straight solder-type cable-end connectors . 39
Figure C-4 : Method of producing solder preforms . 40
Figure C-5 : Centre contact assembly . 40

Tables
Table 5-1: Design rules for minimum bend radius . 19
Table 5-2: Preconditioning heat treatment process . 20

Foreword
This document (EN 16602-70-18:2014) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-18:2014) originates from ECSS-Q-ST-70-18C.
This European Standard shall be given the status of a national standard, either
by publication of an identical text or by endorsement, at the latest by April 2015,
and conflicting national standards shall be withdrawn at the latest by April
2015.
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. CEN [and/or CENELEC] shall not be held
responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
According to the CEN-CENELEC Internal Regulations, the national standards
organizations of the following countries are bound to implement this European
Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
The main part of this Standard is base
...