**FIBER OPTIC** **CABLE, SINGLE FIBER, MULTIMODE, SPACE QUALITY**

**SPECIFICATION CUSTODIAN:**

**THE BOEING COMPANY**

**SPACE AND COMMUNICATIONS DIVISION**

**2100 SPACE PARK DRIVE**

**HOUSTON TEXAS, 77058**

**CAGE CODE: 2B945**

**INTERNATIONAL SPACE STATION PROGRAM**

**SSQ 21657 Revision N/C**

![](media/image1.wmf)

**REVISION AND HISTORY PAGE**

  ------ ---------------------------------------- ----------- -----------
  REV    DESCRIPTION OF CHANGE                    Author and  Approval
  LTR                                             Date        Signature

                                                              

  NEW                                                         

  A                                                           

  B                                                           

  C                                                           
  ------ ---------------------------------------- ----------- -----------

**[PREFACE]{.underline}**

SSQ 21654 Space Station Program, Cable, Single Fiber, Multimode, Space
Quality, General Specification, details the requirements and
characteristics for a single fiber cable with a glass optical fiber and
the appropriate processes, procedures and tools.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Program Manager (or delegated authority) Date

Space Station Program

**SPACE STATION PROGRAM OFFICE**

**CABLE, SINGLE FIBER, MULTIMODE, SPACE QUALITY**

**GENERAL SPECIFICATION**

**CONCURRENCE**

PREPARED BY: PRINT NAME ORGANIZATION

SIGNATURE DATE

CHECKED BY: PRINT NAME ORGANIZATION

[\_\_\_\_\_\_\_\_\_\_\_\_\_]{.underline}

SIGNATURE DATE

SUPERVISED BY: PRINT NAME ORGANIZATION

SIGNATURE DATE

DQA

PRINT NAME ORGANIZATION

SIGNATURE DATE

TABLE OF CONTENTS

Paragraph Title Page

**1.0 SCOPE** [**1**](#scope)

1.1 Purpose [1](#purpose)

1.1 Intent [1](#intent)

1.2 Interconnect system [1](#interconnect-system)

1.2.1 Tools, processes, and procedures
[1](#tools-processes-and-procedures)

1.3 Classification [2](#__RefHeading___Toc480965172)

1.4 Document generation [2](#document-generation)

1.5 Configuration management [2](#configuration-management)

1.5.1 Specification changes [2](#specification-changes)

1.5.2 Specification distribution [2](#specification-distribution)

1.5.3 Procuring activity [2](#procuring-activity)

1.6 Specification custodian [3](#specification-custodian)

1.7 Approved sources [3](#approved-sources)

2.0 Applicable Documents [1](#__RefHeading___Toc480965180)

2.1 Government documents [1](#government-documents)

2.1.1 Specifications [1](#specifications)

2.1.1.1 Federal [1](#federal)

2.1.1.2 Military [1](#military)

2.1.2 Standards [1](#standards)

2.1.2.1 Federal [1](#federal-1)

2.1.2.2 Military [1](#military-1)

2.1.3 Other publications [2](#other-publications)

2.2 Interpretation [2](#interpretation)

2.3 Communications [2](#communications)

3.0 Requirements [1](#__RefHeading___Toc480965191)

3.1 Item description [1](#__RefHeading___Toc480965192)

3.2 General requirements [1](#general-requirements)

3.2.1 Identification of Design [1](#__RefHeading___Toc480965194)

3.2.1.1 Drawings and MSDS Information [1](#__RefHeading___Toc480965195)

3.2.1.2 Exceptions and deviations [1](#exceptions-and-deviations)

3.2.2 Data required for final design approval
[1](#data-required-for-final-design-approval)

3.2.2.1 Test procedures [1](#test-procedures)

3.2.2.1.1 Qualification test procedures
[1](#qualification-test-procedures)

3.2.2.1.2 Acceptance test procedures (4.6.1, 7.0)
[5](#acceptance-test-procedures-4.6.1-7.0)

3.2.2.1.3 Discrepancy/failure analysis [5](#discrepancyfailure-analysis)

3.2.2.2 Materials list [5](#materials-list)

3.2.3 Baseline configuration control
[6](#baseline-configuration-control)

3.2.3.1 Baseline control document [6](#baseline-control-document)

3.2.3.2 Baseline control deviations [6](#baseline-control-deviations)

3.2.4 Traceability [6](#__RefHeading___Toc480965206)

3.3 Workmanship (4.5, 4.7) [7](#__RefHeading___Toc480965207)

3.4 Optical (4.8) [7](#optical-4.8)

3.4.1 Numerical aperture [7](#numerical-aperture)

3.4.2 Information transmission capacity
[7](#information-transmission-capacity)

3.4.3 Attenuation rate [7](#attenuation-rate)

3.4.4 Induced attenuation (4.8.3) [7](#induced-attenuation-4.8.3)

3.4.5 Substitution loss (4.8.4) [7](#substitution-loss-4.8.4)

3.5 Environmental [8](#__RefHeading___Toc480965214)

3.5.1 Fungus (4.9.1) [8](#fungus-4.9.1)

3.5.2 Toxic hazard (4.9.2) [8](#toxic-hazard-4.9.2)

3.5.2.1 Internal requirements [8](#internal-requirements)

3.5.2.2 External requirements [8](#external-requirements)

3.5.3 Odor (4.9.3) [8](#odor-4.9.3)

3.5.3.1 Interior [8](#interior)

1.1.1.1 Exterior [8](#exterior)

3.5.3.2 [8](#section-65)

3.5.4 Flammability (4.9.4) [8](#flammability-4.9.4)

3.5.5 Vacuum Outgassing (4.9.5) [9](#vacuum-outgassing-4.9.5)

3.5.6 Radiation (4.9.6) [9](#__RefHeading___Toc480965225)

3.5.6.1 Ionizing radiation (4.9.6.1) [9](#ionizing-radiation-4.9.6.1)

3.5.6.2 Deep dielectric charging (4.9.6.2)
[9](#deep-dielectric-charging-4.9.6.2)

3.5.6.3 Static-ESD environment (4.9.6.2)
[9](#static-esd-environment-4.9.6.2)

3.5.7 Vacuum (4.9.7) [9](#vacuum-4.9.7)

3.5.8 Temperature survivability (4.9.8)
[9](#temperature-survivability-4.9.8)

3.5.8.1 Internal requirements [9](#internal-requirements-1)

3.5.8.2 External requirements [9](#external-requirements-1)

3.5.9 Thermal cycle/shock (4.9.9) [10](#thermal-cycleshock-4.9.9)

3.5.9.1 Internal requirements [10](#internal-requirements-2)

3.5.9.2 External requirements [10](#external-requirements-2)

3.5.10 Reactivity in fluids (4.9.10) [10](#reactivity-in-fluids-4.9.10)

3.5.11 Humidity (4.9.11) [10](#humidity-4.9.11)

3.5.11.1 Internal cables [10](#internal-cables)

3.5.11.2 External cables [10](#external-cables)

3.5.12 Ambient light susceptibility (4.9.12)
[10](#ambient-light-susceptibility-4.9.12)

3.6 Mechanical (4.10) [10](#mechanical-4.10)

3.6.1 Strippability (4.10.1) [10](#strippability-4.10.1)

3.6.1.1 Cable jacket strippability (4.10.1.1)
[11](#cable-jacket-strippability-4.10.1.1)

3.6.1.2 Cable buffer strippability (4.10.1.2)
[11](#cable-buffer-strippability-4.10.1.2)

3.6.1.3 Fiber buffer strippability (4.10.1.3)
[11](#fiber-buffer-strippability-4.10.1.3)

3.6.2 Cable fiber life [11](#cable-fiber-life)

3.6.2.1 Intrinsic fiber strength [11](#intrinsic-fiber-strength)

3.6.2.2 Dynamic strength (4.10.2) [12](#dynamic-strength-4.10.2)

3.6.3 Crush resistance (4.10.3) [12](#crush-resistance-4.10.3)

3.6.4 Cable bend [12](#cable-bend)

3.6.5 Cyclic flexing (4.10.4) [12](#__RefHeading___Toc480965251)

3.6.6 Cable weight (4.10.4) [12](#cable-weight-4.10.4)

3.6.7 Shock (4.10.6) [12](#__RefHeading___Toc480965253)

3.6.8 Vibration (4.10.7) [12](#__RefHeading___Toc480965254)

3.6.9 Acoustic (4.10.7) [12](#__RefHeading___Toc480965255)

3.7 Physical [13](#physical)

3.7.1 Fiber core (4.11.3.2.1) [13](#fiber-core-4.11.3.2.1)

3.7.2 Fiber cladding (4.11.3.2.1) [13](#fiber-cladding-4.11.3.2.1)

3.7.3 Hermetic coating (4.11.3.2.2) [13](#hermetic-coating-4.11.3.2.2)

3.7.3.1 Internal [13](#internal)

3.7.3.2 External [14](#external)

3.7.4 Fiber coating (4.11.3.2) [14](#fiber-coating-4.11.3.2)

3.7.5 Cable jacket color [14](#cable-jacket-color)

3.7.5.1 Translucent cable jacket (4.11.3.1)
[14](#translucent-cable-jacket-4.11.3.1)

3.7.5.2 Opaque cable jacket [14](#opaque-cable-jacket)

3.7.6 Cable jacket (4.11.3.2) [14](#cable-jacket-4.11.3.2)

3.7.7 Cable stability (4.11.5) [14](#cable-stability-4.11.5)

3.7.8 Identification marking (4.11.3.1)
[14](#identification-marking-4.11.3.1)

3.7.9 Legibility (4.11.3.1) [15](#legibility-4.11.3.1)

3.7.9.1 Opaque jacket [15](#opaque-jacket)

3.7.9.2 Translucent jacket [15](#translucent-jacket)

3.7.10 Marking durability (4.11.4) [15](#marking-durability-4.11.4)

3.7.10.1 Opaque jacket [15](#opaque-jacket-1)

3.7.10.2 Translucent jacket [15](#translucent-jacket-1)

3.7.11 Printing groups (4.11.3.1) [15](#printing-groups-4.11.3.1)

3.7.12 Cable buffer (4.11.3.2.3) [16](#cable-buffer-4.11.3.2.3)

3.7.13 Cable strength member (4.11.3.2.3)
[16](#cable-strength-member-4.11.3.2.3)

3.7.14 Lengths and splices [16](#lengths-and-splices)

4.0 QUALITY ASSURANCE PROVISIONS [17](#__RefHeading___Toc480965279)

4.1 General [17](#general)

4.2 Responsibility for inspection [17](#responsibility-for-inspection)

4.2.1 Supplier responsibilities [17](#__RefHeading___Toc480965282)

4.2.2 Test equipment and inspection facilities
[17](#test-equipment-and-inspection-facilities)

4.2.3 Test equipment error [18](#test-equipment-error)

4.3 Product assurance program [18](#product-assurance-program)

4.3.1 Quality and reliability assurance plan
[18](#quality-and-reliability-assurance-plan)

4.3.2 Critical hardware notation [18](#critical-hardware-notation)

4.3.3 Disposition and corrective action
[18](#disposition-and-corrective-action)

4.4 Preparation of optical test samples
[18](#preparation-of-optical-test-samples)

4.5 Materials inspection (3.3) [19](#materials-inspection-3.3)

4.6 Product acceptance test [19](#product-acceptance-test)

4.6.1 Acceptance of product for delivery (3.2.2.1.2, 7.0)
[19](#acceptance-of-product-for-delivery-3.2.2.1.2-7.0)

4.6.2 Unit of manufacture [19](#unit-of-manufacture)

4.6.3 Sample unit [19](#sample-unit)

4.7 Workmanship verification [19](#workmanship-verification)

4.7.1 Inspection Equipment [19](#inspection-equipment)

4.8 Optical Verification (3.4) [20](#optical-verification-3.4)

4.8.1 Optical test set [20](#optical-test-set)

4.8.1.1 Light source [20](#light-source)

4.8.1.2 Source monitoring equipment (SME)
[20](#source-monitoring-equipment-sme)

4.8.1.3 Detection equipment [21](#detection-equipment)

4.8.1.4 Reference cable set and fabrication
[21](#reference-cable-set-and-fabrication)

4.8.1.5 MTC cable [23](#__RefHeading___Toc480965303)

4.8.2 Optical test set calibration [23](#optical-test-set-calibration)

4.8.2.1 Meter and source calibration using the MTC cable
[23](#meter-and-source-calibration-using-the-mtc-cable)

4.8.2.2 SRD cable set calibration [23](#srd-cable-set-calibration)

4.8.3 Induced loss (3.4.4) [24](#induced-loss-3.4.4)

4.8.3.1 Optical measurements [24](#optical-measurements)

4.8.3.2 Test set-up [25](#test-set-up)

4.8.3.3 Test procedure [25](#test-procedure)

4.8.3.4 Induced loss calculations [25](#induced-loss-calculations)

4.8.4 Substitution loss (3.4.5) [25](#substitution-loss-3.4.5)

4.8.4.1 Optical measurements [25](#optical-measurements-1)

4.8.4.2 Test equipment set up [26](#test-equipment-set-up)

4.8.4.3 Test procedure [26](#test-procedure-1)

4.8.4.4 Substitution loss calculations
[26](#substitution-loss-calculations)

4.8.4.5 OTDR loss measurements [26](#__RefHeading___Toc480965317)

4.9 Environmental requirement verification
[26](#environmental-requirement-verification)

4.9.1 Fungus (3.5.1) [26](#fungus-3.5.1)

4.9.2 Toxic hazard (3.5.2) [27](#toxic-hazard-3.5.2)

4.9.2.1 By analysis [27](#by-analysis)

4.9.3 Odor (3.5.3) [27](#odor-3.5.3)

4.9.3.1 By test [27](#by-test)

4.9.3.2 By analysis [27](#by-analysis-1)

4.9.4 Flammability (3.5.4) [27](#flammability-3.5.4)

4.9.4.1 By test [27](#by-test-1)

4.1.1 Test Requirement [27](#test-requirement)

4.9.4.2 By analysis [28](#by-analysis-2)

4.9.5 Vacuum Outgassing (3.5.5) [28](#vacuum-outgassing-3.5.5)

4.9.5.1 By test [28](#by-test-2)

4.9.5.2 By analysis [28](#by-analysis-3)

4.9.6 Radiation (3.5.6) [28](#__RefHeading___Toc480965332)

4.9.6.1 Ionizing radiation (3.5.6.1) [28](#ionizing-radiation-3.5.6.1)

4.9.6.2 Static-EMI environment (3.5.6.4)
[29](#static-emi-environment-3.5.6.4)

4.9.6.2.1 Human Body Model [29](#__RefHeading___Toc480965335)

4.9.6.2.2 M [29](#__RefHeading___Toc480965336)

4.9.7 Vacuum (3.5.7) [30](#vacuum-3.5.7)

4.9.8 Temperature survivability (3.5.8)
[30](#temperature-survivability-3.5.8)

4.9.9 Thermal shock (3.5.9) [30](#thermal-shock-3.5.9)

4.9.10 Reactivity in fluids (3.5.10) [30](#reactivity-in-fluids-3.5.10)

4.9.11 Humidity (3.5.11) [31](#humidity-3.5.11)

4.9.12 Ambient light susceptibility (3.5.12)
[31](#ambient-light-susceptibility-3.5.12)

4.10 Mechanical requirement verification (3.6)
[31](#mechanical-requirement-verification-3.6)

4.10.1 Strippability (3.6.1) [31](#strippability-3.6.1)

4.10.1.1 Cable jacket strippability (3.6.1.1)
[31](#cable-jacket-strippability-3.6.1.1)

4.10.1.2 Cable buffer strippability (3.6.1.2)
[31](#cable-buffer-strippability-3.6.1.2)

4.10.1.3 Fiber coating strippability (3.6.1.3)
[31](#fiber-coating-strippability-3.6.1.3)

4.10.2 Dynamic tensile strength test (3.6.2.2)
[32](#dynamic-tensile-strength-test-3.6.2.2)

4.10.3 Crush resistance verification (3.6.3)
[32](#crush-resistance-verification-3.6.3)

4.10.4 Cycling flexing (3.6.5) [32](#cycling-flexing-3.6.5)

4.10.5 Cable weight (3.6.6) [33](#cable-weight-3.6.6)

4.10.6 Shock (3.6.7) [33](#__RefHeading___Toc480965352)

4.10.7 Vibration (3.6.8) [33](#__RefHeading___Toc480965353)

4.11 Physical verifications [33](#physical-verifications)

4.11.1 Test equipment [33](#test-equipment)

4.11.2 Test specimen [33](#test-specimen)

4.11.3 Test procedures [34](#test-procedures-1)

4.11.3.1 Visual examination (3.7.5.1, 3.7.5.4, 3.7.5.4.1,3.7.5.4.3,
3.7.8)
[34](#visual-examination-3.7.5.1-3.7.5.4-3.7.5.4.13.7.5.4.3-3.7.8)

4.11.3.2 Dimensional examination (3.7.1, 3.7.2, 3.7.3, 3.7.4, 3.7.5.2,
3.7.7)
[34](#dimensional-examination-3.7.1-3.7.2-3.7.3-3.7.4-3.7.5.2-3.7.7)

4.11.3.2.1 Fiber subassembly (3.7.1, 3.7.2, 3.7.3, 3.7.4 )
[34](#fiber-subassembly-3.7.1-3.7.2-3.7.3-3.7.4)

4.11.3.2.2 Hermetic coating verification (3.11.1.3)
[35](#hermetic-coating-verification-3.11.1.3)

4.11.3.2.3 Cable buffer, strength member and jacket (3.7.5.5, 3.7.5.6)
[35](#cable-buffer-strength-member-and-jacket-3.7.5.5-3.7.5.6)

4.11.4 Marking durability (3.7.10) [35](#marking-durability-3.7.10)

4.11.5 Cable jacket stability verification. (3.7.7)
[35](#cable-jacket-stability-verification.-3.7.7)

5.0 PREPARATION FOR DELIVERY [1](#preparation-for-delivery)

5.1 Cleanliness [1](#cleanliness)

5.2 Packaging requirements [1](#packaging-requirements)

5.2.1 Reels and spools [1](#reels-and-spools)

5.3 Product and package marking [1](#product-and-package-marking)

5.4 Marking of reels and spools [1](#marking-of-reels-and-spools)

5.4.1 Space Station critical hardware [2](#__RefHeading___Toc480965371)

5.4.2 Packaging labels [2](#packaging-labels)

5.5 Unit protection and wrapping [2](#unit-protection-and-wrapping)

5.6 Unit packaging [3](#unit-packaging)

5.7 Packing containers [3](#packing-containers)

6.0 NOTES [1](#notes)

6.1 Part numbers [1](#part-numbers)

6.2 Approved source(s) of supply [1](#approved-sources-of-supply)

7.0 REQUIREMENTS VERIFICATION MATRIX
[1](#requirements-verification-matrix)

**APPENDICES**

Appendix A Item Detail Specification A-1

**LIST OF TABLES**

Table I - Test Lengths [2](#__RefHeading___Toc480965380)

Table II - Typical Cable Jacket Corroding Environments
[5](#__RefHeading___Toc480965381)

Table III - Shuttle Payload Sound Spectrum During Launch
[13](#__RefHeading___Toc480965382)

Table IV - Far Field Output [20](#__RefHeading___Toc480965383)

Table V - Equipment Resolution Requirements
[21](#__RefHeading___Toc480965384)

Table VI - Fungus Environmental Test Conditions
[26](#__RefHeading___Toc480965385)

Table VII - Flammability Test Requirement Details
[27](#__RefHeading___Toc480965386)

Table VIII - Outgassing Products/Vacuum Stability Test Conditions
[28](#__RefHeading___Toc480965387)

Table IX - Temperature Survivability Test Conditions
[30](#__RefHeading___Toc480965388)

Table X - Thermal Shock Test Conditions
[30](#__RefHeading___Toc480965389)

Table XI - Test Fluids [30](#__RefHeading___Toc480965390)

Table XII - Requirements Verification Matrix
[1](#__RefHeading___Toc480965391)

# SCOPE

## Purpose

The purpose of this specification is to detail the requirements and
characteristics for a single fiber cable for use on the International
Space Station. This document specifies the requirements for interior,
exterior or both interior and exterior service in a manned, zero
gravity, low earth orbit with a minimum life expectancy of 15 years (5
years in orbit prior to service and 10 of service). Additionally, the
cable may have 5 years of terrestrial exposure prior to the 15 years of
orbit. Where performance characteristics cannot be verified using
industry standard test methods, the user must ultimately determine the
suitability of these items for use on a case-by-case basis.

## Intent

The SSQ 21654 cable specified herein is intended for use with the size
16 optical termini specified in SSQ 21635, SSQ 21636, and SSQ 21637 type
connectors and in environments that includes a space vacuum and a
normally pressurized habitat. This document is intended to serve as the
procurement specification. Cables construction to meet this
specification can have an internal configuration, an internal
configuration and/or a configuration that meets both the internal and
external requirements. The different configurations are delineated by
dash number to the cable part number as defined by Section 6.

Additional Environmental, Mechanical and Material Concerns

There are aspects of the internal and external environment known to
degrade fiber optic cables. The user should be aware of the information
in this section and should assess these concerns on a case-by-case basis
while considering its application.

## Interconnect system

The fiber optic cable is part of an interconnect system that includes
fiber optic termini, connectors, accessories, wire and cable, tools,
assembly processes and procedures and, as such, are commonality color
coded to aid in their proper match in an effort to eliminate errors in
ground based factory or on-orbit installation, assembly and repair.

The specific color assignments are usually found in the appendix which
contains the drawings of contacts, or in a table listing color
assignments by wire size or listed as a requirement with other detail
characteristics (fiber optic cable). For example, the fiber optic cable
defined in this SSQ is color coded violet and the fiber optic termini
used with this cable will have a violet stripe on the barrel to indicate
it is used with this cable. The contact will also have strips
designating the contact size and connector type. Anyone familiar with
the system can tell at a glance it is a correct combination.

### Tools, processes, and procedures

Appendices are included within this specification providing tools and
fiber/cable stripping processes and procedures. Users with certified
tools and applicable processes and procedures in place need only
demonstrate that those tools, processes and procedures meet the
requirements applicable to the subject at hand.

Users without adequate tools and applicable processes and procedures are
provided with a list of tools and applicable processes and procedures
which will assure compliance to the requirements specified herein.

Classification

Cable configured to this specification and bearing the appropriate part
number shall be considered as Class S -- Space Qualified.

## Document generation

This specification, revision, text and graphics, is computer generated.
The text software is Microsoft® Word. This software contains conversion
capability for many major word processor programs. See the Microsoft®
Word user's reference.

## Configuration management

This NASA specification is under configuration management by the NASA
Space Station program, Johnson Space Center, Houston, Texas. Parts
defined by and manufactured to this specification are configuration
controlled by base line control documentation, **[NOT]{.underline}** by
specification revision letter.

### Specification changes

Changes to this specification shall be reviewed and approved by the NASA
International Space Station Program Office, or their designee, prior to
official release of the revision containing those changes.

### Specification distribution

Released copies of this specification are available from the
specification custodian and/or the NASA International Space Station
Program Office, Parts Control Board, Johnson Space Center, Houston,
Texas.

### Procuring activity

The procuring activity is responsible for supplier negotiations dealing
with their procurement effort. This includes any development associated
with product not developed and tooled as part of the initial release of
this specification.

The procuring activity is responsible for the coordination of all
specification related issues with the specification custodian such that
development status and any related changes may be incorporated.

A development status data base shall be maintained by the specification
custodian and/or the NASA International Space Station Program Office
with the intent of incorporation in a program wide data base (EPIMS)
when available.

## Specification custodian

The supplier(s) shown on the title page of this specification have been
designated by the NASA International Space Station Program Office,
Johnson Space Center, Houston Texas as the specification custodian and
is tasked to generate this specification and provide related custodial
activities on behalf of NASA.

The specification custodian, in conjunction with the NASA Space Station
Program Office, Johnson Space Center, Houston Texas, or their designee,
is responsible for program coordination, supplier coordination,
technical evaluation and incorporation of comments, and final
preparation of revisions to this specification.

The specification custodian, with approval of the NASA Space Station
Program Office or their designee, may assign any portion, or all, of
these duties to any active participant in the Space Station program.

The specification custodian shall act in concert with the joint work
package connector board and the procuring activity, or as directed by
the NASA International Space Station Program Office or their designee,
in all issues regarding this specification.

## Approved sources

Approved suppliers shall allow user review of any and all listed
materials, processes, procedures, drawings, or any other item of
interest related to this specification, at the supplier's facility or
mutually agreed to location. Should disagreement arise, direction from
the NASA International Space Station Program Office via the
specification custodian shall be requested. The decision of the NASA
International Space Station Program Office shall be final.

It is intended that data deemed "proprietary" by the supplier shall be
protected to the best of the user's ability.

Approved Sources are documented in 6.0.

#  {#section .unnumbered}

Applicable Documents

## 

## 

## Government documents

The following documents, of the exact issue shown, or if no issue is
specified, the issue in effect at the date of invitation to bid, form a
part of this specification to the extent specified herein. In the event
of conflict between documents referenced here and the contents of 3.0,
4.0, 5.0, 10.0, and the associated Appendices, the requirements detailed
by this specification are considered the superseding requirements. (See
1.0 Scope.)

### Specifications

#### Federal

#### Military

  -------------------- ----------------------------------------------------
  JSC-SPEC-SP-R-0022   General Specification Vacuum Stability Requirements
                       of Polymeric Material for Spacecraft Applications

  NHB 5300.4 (3G)      Inspection System Provisions for Suppliers of Space
                       Materials, Parts, Components and Services

  NASA-STD-6001        Flammability, Odor and Offgassing Requirement Test
                       Procedures for Materials in Environments that
                       Support Combustion

  SSP 30233            Space Station Requirements for Materials and
                       Processes, General Specification for

  STP 30253            

  MSFC-HDBK-527/ JSC   Materials Selection For Space Hardware Systems
  09604                

  NSFC-SPEC-164        
  -------------------- ----------------------------------------------------

### Standards

#### Federal

  ------------------ ----------------------------------------------------
  FED-STD-228        Cable and Wire, Insulated; Methods of Testing.

  ------------------ ----------------------------------------------------

#### Military

  ------------------ ----------------- ----------------------------------------------------
  DOD-STD-1678       Fiber Optic Test  
                     Methods and       
                     Instrumentation   

  MIL-C-12000                          Cable, Cord, and Wire, Electric, Packaging of

  MIL-B-81705                          Barrier Materials, Flexible, Electrostatic-Free,
                                       Heat Sealable

  MIL-STD-104        Limits for        
                     Electrical        
                     Insulation Color  

  MIL-STD-129        Marking for       
                     Shipment and      
                     Storage.          

  MIL-STD-202        Test Methods for  
                     Electronic and    
                     Electrical        
                     Component Parts   

  MIL-STD-454        Standard General  
                     Requirements for  
                     Electronic        
                     Equipment         

  MIL-STD-810        Environmental     
                     Test Methods and  
                     Engineering       
                     Guidelines        

  MIL-STD-45662      Calibration       
                     Systems           
                     Requirements.     

  MS90376                              
  ------------------ ----------------- ----------------------------------------------------

(Copies of specifications and standards required by suppliers in
connection with a specific acquisition should be obtained from the
contracting activity or as directed by the contracting activity.)

### Other publications

The following documents form a part of this specification to the extent
specified herein.

**Electronic Industries Association (EIA)**

  ------------------ ----------------------------------------------------
  ASTM E595          Standard Test Method for Total Mass Loss and
                     Collected Volatile Condensable Materials from
                     Outgassing in a Vacuum Environment.

  EIA/TIA-455-13     Visual and Mechanical Inspections of Fibers, Cables,
                     Connectors and Other Fiber Optic Devices.(DOD
                     Adopted)

  EIA/TIA-455-20     Measurement of Change in Optical Transmittance.

  EIA/TIA-455-30     Frequency Domain Measurement of Multimode Optical
                     Fiber Information Transmission Capacity

  EIA/TIA-455-31B    Fiber Tensile Proof Test Method

  EIA/TIA-455-37A    Low or High Temperature Bend Test for Fiber Optic
                     Cables

  EIA/TIA-455-41A    Compressive Load Resistance of Fiber Optic

  EIA/TIA-455-45B    Method for Measuring Optical Fiber Geometry Using a
                     Laboratory Microscope

  EIA/TIA-455-46     Spectral Attenuation Measurement for Long-Length,
                     Graded Index Optical Fibers

  EIA/TIA-455-47B    Output Far-Field Radiation Pattern Measurements.
                     (DOD Adopted)

  EIA/TIA-455-60     Measurement of fiber or Cable Length Using an OTDR

  EIA/TIA-455-61     Measurement of Fiber or Cable Attenuation Using an
                     OTDR

  EIA/TIA-455-171    Attenuation by Substitution Measurement---for
                     Short-Length Multimode Graded-Index and Single-Mode
                     Optical Fiber Cable Assemblies.

  EIA/TIA-455-177A   Numerical Aperture Measurement of Graded-Index
                     Optical Fibers

  EIA/TIA-455-189    Ozone Exposure Test for Fiber Optic Components

  BELCORE GR326-CORE Generic Requirements for Single-Mode Optical
                     Connectors and Jumper Assemblies
  ------------------ ----------------------------------------------------

## Interpretation

Should the requirements of this specification and/or any associated
documents become subject to conflicting interpretation, clarification
shall be formally requested.

In the event of a conflict between the text of this specification and
the references cited herein, the text of this specification shall take
precedence.

## Communications

All written communications shall be through the NASA International Space
Station Program Office, Johnson Space Center, Houston, Texas, the
specification custodian or the procuring activity. The procuring
activity shall be responsible for assuring program coordination (see
1.7).

# 

# 

# 

# Requirements

## Item description

The design, construction, and physical dimensions of the complete cable
and cable elements shall be as specified herein and in Appendix A. This
specification defines a simplex or singe fiber construction. Some
requirements are identified specifically for internal use cables,
external use cables and both internal and external use cables. They are
specified by dash number per section 6.0. All cable constructions and
designs shall be of a circular cross-section and generally concentric
geometry.

## General requirements

### Identification of Design

Prospective suppliers shall submit one reproducible copy of the
following:

#### Drawings and MSDS Information

Drawings shall be submitted which show the internal cross-sectional
drawing shall show all internal and external dimensions and their
tolerances; identification of all materials and coatings (by chemical
composition or by original manufacture's part number) used in the
construction of the cable; the location and size of marking; the maximum
guaranteed weight. The drawing may be exaggerated dimensionally.
Material Safety Data Sheets shall be provided for all raw materials
used.

#### Exceptions and deviations

Prospective suppliers shall submit a list of exceptions to or deviations
from the conditions or requirements of the specification detailing by
paragraph number the specifics of exceptions or deviations and the
rationale or reasons thereof. The schedule and/or cost impact of not
allowing each exception or deviation shall be identified.

### Data required for final design approval

#### Test procedures

Detailed qualification and acceptance test procedures shall be submitted
to and approved by the specification custodian prior to the start of
testing.

##### Qualification test procedures

Detailed qualification test procedures shall be submitted for approval
by the specification custodian four weeks minimum prior to scheduled
start of qualification testing.

###### Qualification test lengths

The test sample length is specified in Table I. 200 meters shall be
retained by the supplier for qualification tests and 25 meters shall be
supplied to specification custodian to be forwarded to NASA for
materials testing.

I.  Test Lengths

+----------------+-----------------------+--------------+--------------+
| **Requirement  | **Exposure**          | **Exposed**  | **Total      |
| Paragraph**    |                       |              | Sample       |
|                | **Condition**         | **Sample**   | Length       |
|                |                       |              | (meters)**   |
|                |                       | **Length     |              |
|                |                       | (meters)**   |              |
+----------------+-----------------------+--------------+--------------+
| 3.4.1          | Numerical Aperture    | 2 (Fiber)    |              |
+----------------+-----------------------+--------------+--------------+
| 3.4.2          | Optical Bandwidth     | 1000 (Fiber) |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.1          | Fungus                | 7 (Cable)    |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.2          | Toxic Hazard          | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.3          | Odor                  | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.4          | Flammablity           | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.5          | Vacuum                | Part of      |              |
|                | Stability/Offgassing  | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.10.1       | Ionizing Radiation    | 100 (Cable)  | 130 (Cable)  |
+----------------+-----------------------+--------------+--------------+
| 3.5.10.2       | Deep Dielectric       |              |              |
|                | Charging              |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.10.4       | Static-ESD            | 1 (Fiber)    | 1 (Fiber)    |
|                | Environment           |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.11         | Vacuum                | 100 (Cable)  | 130 (Cable)  |
+----------------+-----------------------+--------------+--------------+
| 3.5.12         | Survival Temperature  | 100 (Cable)  |              |
+----------------+-----------------------+--------------+--------------+
| 3.5.13         | Thermal Shock         | 100 (Cable)  | 110 (Cable)  |
+----------------+-----------------------+--------------+--------------+
| 3.5.14         | Reactivity in Fluids  | 5 (Cable)    | 5 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.5.15         | Humidity              | 100 (Cable)  | 110 (Cable)  |
+----------------+-----------------------+--------------+--------------+
| 3.5.16         | Ambient Light         | 30 (cable)   | 40 (Cable)   |
|                | Susceptibility        |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.6.1.1        | Cable Jacket          | 1 (Cable)    | 1 (Cable)    |
|                | Strippability         |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.6.1.2        | Cable Buffer          | Part of      |              |
|                | Strippability         | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.6.1.3        | Fiber Buffer          | Part of      |              |
|                | Strippability         | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.6.2          | Cable Fiber Life      | 100%         | 100%         |
+----------------+-----------------------+--------------+--------------+
| 3.6.2.1        | Intrinsic Fiber       | 100%         | 100%         |
|                | Strength              |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.6.2.2        | Dynamic Strength      | 80 (Cable)   | 80 (Cable)   |
+----------------+-----------------------+--------------+--------------+
| 3.6.3          | Crush Resistance      | 5 (Cable)    | 5 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.6.4          | Cable Bend            | 5 (Cable)    | 10 (Cable)   |
+----------------+-----------------------+--------------+--------------+
| 3.6.5          | Cyclic Flexing        | 5 (Cable)    | 5 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.6.7          | Cable Weight          | 1 (cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.1          | Fiber Core            | 1 (fiber)    | 1 (Fiber)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.2          | Fiber Cladding        | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.7.3          | Hermetic Coating      | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.7.4          | Fiber Coating         | Part of      |              |
|                |                       | above        |              |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.1        | Cable Color           | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.2        | Cable Jacket          | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.3        | Cable Jacket          | 2 (Cable)    | 2 (Cable)    |
|                | Stability             |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.4        | Identification        | 1 (Cable)    | 1 (Cable)    |
|                | Marking               |              |              |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.4.1      | Legibility            | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.4.2      | Marking Durability    | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.5.7.4.3      | Printing Group        | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.5        | Cable Buffer          | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+
| 3.7.5.6        | Cable Strength Member | 1 (Cable)    | 1 (Cable)    |
+----------------+-----------------------+--------------+--------------+

###### Qualification inspection routine

The sample shall be subjected to the qualification inspection specified
in Table XII, however the order may change from that shown. Fiber
dimensional measurements must be performed prior to cabling and sample
lengths shall be as required for the individual measurement.
Qualification inspection shall be performed on sample units produced
with equipment and procedures normally used in production at a
laboratory acceptable to the government and the specification custodian.

###### Qualification test discrepancy

Any discrepancy that occurs during testing shall be reported to the
specification custodian within 24 hours. Testing shall not continue
unless otherwise advised by the specification custodian. The supplier
shall prepare a description of the discrepancy, an analysis of the
cause, corrective action proposed, and the extent of retest if
applicable.

###### Qualification test failure

If a failure occurs during qualification tests, testing shall cease, the
supplier shall notify the specification custodian at once verbally and
shall follow-up with a written notification describing the cause of
failure and the proposed corrective action. Written specification
custodian approval of such action must be given prior to resumption of
testing.

###### Qualification reports

A detailed qualification test report shall be submitted for approval by
the specification custodian within four weeks following completion of
testing to provide a record that the articles tested comply with the
qualification test requirements of the specification. The report shall
be certified by an authorized representative of the company, and shall
contain the following information for which approval is requested:

a.  Certification of the fact that the test samples were in conformance
    with and tested to the latest approved revision of the specification
    with respect tot he design, construction, materials, workmanship,
    marking, manufacturing processes and controls, test procedures, etc.

b.  Dated and signed examination and test results verifying that the
    samples complied with all the qualification test requirements of
    this drawing including:

1\. Measured or observed test conditions at the time of test or
examination as required.

> 2\. All pertinent qualitative observations and quantitative values
> obtained by measurement, including oscillographs, recordings, charts,
> photographs, etc.
>
> 3\. Calculated values and sample calculations.
>
> 4\. References to applicable drawings or documents (design drawing,
> test procedure, Q.C. procedure, etc.) cross-correlated to the specific
> requirements and test method paragraph of this specification for each
> of the examination and test parameters itemized in Table VIII.

###### Qualification by similarity

If a cable, which is similar in materials and construction to what is
specified herein, has previously been subjected to, and successfully
passed, tests which are the equivalent of those required herein, it may
be possible to utilize the previous tests in lieu of part or all of the
testing required by this specification. In such a case, the supplier may
submit a statement which identifies the similarities and differences
between the previously tested cable and the cable specified herein. The
statement should cover design features, construction and materials of
the cable to permit a competent evaluation of the similarity of the
cables and the validity of the comparison. The statement, together with
certified copies of the earlier tests reports, shall be submitted for
the qualifying activity approval in advance of the start of
qualification testing. If approved, they shall also be included as part
of the qualification test report.

####### Qualification by analysis

Should any of the requirements be qualifiable by analytical processes
the supplier shall submit that analysis to the specification custodian
for approval in advance of the start of qualification testing. If
approved the analyses shall be included as part of the qualification
test report.

####### Qualification test sample disposition

All test samples, or the remains thereof, shall be clearly identified as
qualification test samples, along with their appropriate part number.
The test samples shall then be protectively packaged and, unless
otherwise specified in the purchase contract, shipped to the
specification custodian in a container marked "Qualification Samples -
Do Not Use". The cable samples shall be conspicuously marked with at
least two red "X's" in a manner which does not obscure other markings.

###### Qualification Maintenance

Qualification status will be considered valid as long as the cable
design, the manufaturing processes and raw materials used remain
unchanged from thee used to produce the qualification test product. And
design, process or raw material change must be approved by the
specification custodian prior to implementation so they can determine
the product will meet the specification requirements. This analysis may
show that additional testing is required to validate the product still
meets the specification requirements or that the product will be
sufficiently different such that a full re-qualification is necessary.
Marking unqualified cable with the part numbers specified herein is
considered fraudulent and may be grounds for prosecution.

##### Acceptance test procedures (4.6.1, 7.0)

Detailed acceptance test procedures shall be submitted for approval by
the specification custodian six weeks minimum prior to scheduled start
of acceptance testing. Acceptance tests shall be performed on every lot
of cable produced and marked with the part numbers defined herein. Some
of the acceptance test apply to the fiber before it is cabled. Minimum
yield requirements are specified in section 3.10. Lots which do not meet
these minimum yield requirements shall not be shipped and shall be
identified as non-conforming product.

##### Discrepancy/failure analysis

The supplier is responsible to provide complete failure analysis of all
failures. The analysis shall consist of an analysis plan, a narrative of
the analysis activity and full documentation of any anomalies found, and
recommend action.

Discrepancies/failures reported from any source shall be brought to the
attention of the specification custodian, or NASA designated technical
representative, within 5 working days of receipt by the supplier. The
supplier shall analyze each report and shall transmit their recommended
disposition or corrective action to the specification custodian within
10 working days of receipt of the report. Review of the proposed
recommendations or corrective actions and notification of acceptance
status shall be provided to the supplier within 5 working days of
receipt of the report.

#### 

#### Materials list

A complete list of materials, including material rating in accordance
with MSFC-HDBK-527/JSC-09604, quantity and exposed surface area shall be
submitted four weeks prior to start of production. For external use
cables, the exposed surface area will be considered to determine if
decomposing materials are sufficient to inhibit proper function of
susceptible subassemblies (such as photo-voltaic panels and thermal
radiators). Specifically, Table II shows environments that are known to
cause degradation to typical cable jacket materials and for which the
user of the cable specified herein must consider for use in the next
assembly.

II. Typical Cable Jacket Corroding Environments

+-------------+---------------------------------+---------------------+
| **En        | **Level**                       | **Controlling       |
| vironment** |                                 | Document**          |
+-------------+---------------------------------+---------------------+
| Atomic      | The cable shall not degrade     | SSP 30233 Rev E     |
| Oxygen      | when exposed to 5 X 10^21^      |                     |
|             | atoms/cm^2^year for 15 years.   |                     |
+-------------+---------------------------------+---------------------+
| Solar UV    | ***TBD***                       | SSP 30233 Rev E     |
| Radiation   |                                 |                     |
+-------------+---------------------------------+---------------------+
| Solar       | ***TBD***                       | SSP 30233 Rev E     |
| Particles   |                                 |                     |
+-------------+---------------------------------+---------------------+
| Arc         | It may be possible that the     | NASA-STD-6001 Test  |
| Tracking    | byproducts of combustion of the | 18                  |
|             | cable may support an arc        |                     |
|             | tracking scenario. All the wire | Replace one of the  |
|             | insulation used in ISS is       | 7 wires with the FO |
|             | compliant but the FO cable      | cable. Subject the  |
|             | shall not interact with the     | harness to a        |
|             | wires, or by itself to produce  | ignition source per |
|             | combustion byproducts that      | the flammability    |
|             | support arc tracking or can     | test requirements.  |
|             | pass electrical current         | Perform in a O2     |
|             |                                 | rich environment    |
|             |                                 | per Table VII.      |
+-------------+---------------------------------+---------------------+
| HF Etching  | HF is produced during           | TBD                 |
| Resistance  | fluoropolyimer processing       |                     |
|             | operations and in subsequent    |                     |
|             | episodes of handling or ESD     |                     |
|             | insults on fluoropolyimers.     |                     |
+-------------+---------------------------------+---------------------+
| Ozone       | The exterior cables will be     | EIA/TIA 455 FOTP    |
|             | subjected to Ozone during       | 189                 |
|             | transport to orbit. The sample  |                     |
|             | shall be wrapped around a 1.25  |                     |
|             | cm mandrel, subjected to 40°C,  |                     |
|             | RH = 50% min., exposed to 1 day |                     |
|             | to 1000 PPM dose.               |                     |
+-------------+---------------------------------+---------------------+
| Plasma      | ***TBD***                       | SSP 30233 E         |
+-------------+---------------------------------+---------------------+

### Baseline configuration control

Configuration control will be accomplished by baseline control
documentation. The specification custodian shall approve the process
baseline control documentation prior to initiating manufacturing or
testing of products to be furnished under this specification.

#### Baseline control document

The baseline control document shall be submitted to the specification
custodian for approval, four weeks maximum prior to the start of
production. The baseline control document shall be updated after each
requirement change. The baseline control documentation shall include
dimensions, processes and relevant process controls.

#### Baseline control deviations

After final approval of the baseline control documentation, there shall
be no deviations without written approval for the specification
custodian (see 1.6 and 1.7). All requests for deviation from the
requirements of this specification shall be submitted to the procuring
activity procurement department in writing and accompanied by through
technical rationale.

### Traceability

All finished cable must be traceable by lot date code to the part number
and lot date code of all constituent and raw materials used the cables
construction. All constituent fiber lots must be traceable to
documentation establishing that it has been exposed to adequate proof
test levels on a 100% basis. It is the responsibility of the supplier to
monitor the fiber production and to insure that surviving fiber of low
yield runs (more that 20% crapped during a draw session due to proof
breaks, dimensional instability or coating defects) is not shipped as
part of this cable.

## 

## Workmanship (4.5, 4.77)

All details of workmanship shall be in accordance with high grade
optical fiber and cable manufacturing practice. No fiber splices are
allowed.

## Optical (4.8)

### Numerical aperture 

The numerical aperture of the fiber shall be in 0.30 ± 0.02. The fiber
optic cable numerical aperture shall be verified in accordance with
EIA/TIA RS 455 FOTP 47 Method A. The cable shall be 2 ± 0.2 meters and
the test shall be run at 1300 ± 30 nm.

### Information transmission capacity

The --3dB bandwidth of 1 Km of fiber shall be as specified in 600 MHz-Km
measured at 1300 ± 30 nm. The cable shall be measured for information
transmission capacity in accordance with EIA/TIA RS 455 FOTP 30. Report
the operator, date, test sample identification, test sample length,
source wavelength and results.

### Attenuation rate 

The attenuation rate of cable shall be 6 ± 3 dB/Km (6 ± 3 dB/3300 feet)
under all or combinations conditions specified herein and at the end of
life. The allowable attenuation shall be measured at 1300 ± 30 nm.

### Induced attenuation (4.8.3)

Induced loss measurements are used to determine the optical performance
of the test sample during the exposure to the test environment.
Therefore, the test equipment must remain connected to the unit under
test for the duration of the stress exposure. Induced loss measurements
are as accurate as the optical equipment (± 0.03 dB) and are preferred
when testing small lengths of cable. The induced attenuation measurement
shall be normalized to dB/Km and shall not exceed the attenuation rate
in paragraph 3.4.3.

+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       |    | ###       | ###       |   | ###       |   |           |
|           |    |           |           |   |           |   |           |
| ###       |    | ###       | ###       |   | ###       |   |           |
|           |    |           |           |   |           |   |           |
| ###       |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+
| ###       | ## |           | ###       | # |           | # |           |
|           | #  |           |           | # |           | # |           |
|           |    |           |           | # |           | # |           |
|           |    |           |           |   |           |   |           |
+-----------+----+-----------+-----------+---+-----------+---+-----------+

### 

### Substitution loss (4.8.4)

Substitution loss measurements are used to determine the change in
optical performance due to the exposure to the test environment. Since
the substitution loss measurements quantify optical performance before
and after the exposure the unit under test may be removed from the test
equipment. Substitution loss measurement accuracy is limited to the
connector remating repeatability (for ST connectors the accuracy is
about 0.07 dB). Unless specified in the test requirement, the change in
substitution loss measurements taken before and after the exposure to
the test shall not exceed 0.20 dB. The substitution loss measurement
shall be normalized to dB/Km and shall not exceed the attenuation rate
in paragraph 3.4.3.

## Environmental

Selected materials shall comply with SSP 30233 and be of a type and
quality to assure compliance with the requirements of this
specification, and shall be physically and chemically compatible for
their intended use and throughout their intended lifetime.

### Fungus (4.9.1)

#### 

Materials shall be Grade 0 (fungus inert) as defined by MIL-STD-454,
Requirement 4.

#### 

#### Toxic hazard (4.9.2)

#### Internal requirements 

Toxic contamination levels must meet the requirements given in JSC
20584, "Spacecraft Maximum Allowable Concentrations for Airborne
Contaminants", or The Toxic Hazard Index shall be less than 0.5.

#### External requirements 

None

### Odor (4.9.3)

#### Interior

The materials used individually and combined shall have an odor rating
of 2.5 or less.

#### Exterior 

#### 

None

### Flammability (4.9.4)

#### 

#### The materials used in the cable shall be non combustible or self-extinguishing and have an "A" flammability rating per MSFC-HDBK-527/JSC09604. Although the external cables are use in a environment that does not support ignition, they must meet the same flammability requires for to demonstrate that they will not support combustion while being transported in to orbit.

#### 

#### Vacuum Outgassing (4.9.5)

The polymeric materials used in the cable shall not exceed a maximum
total mass loss (TML) of 1.0 percent mass and a maximum collected
volatile condensable material (CVCM) content of 0.1 percent.

#### 

#### 

#### 

#### 

#### 

#### 

#### 

2.  

#### 

#### 

#### 

#### 

#### 

#### 

#### 

#### 

#### 

[]{#__RefHeading___Toc480965225 .anchor}Radiation (4.9.6)

#### Ionizing radiation (4.9.6.1)

The external fiber optic cable shall survive a 15 year total dose and
dose rates as follows:

  ----------------------------------------------- ---------------- -----------
  **Radiation** **Environments**                  **Dose Rate**    **15 year
                                                  **(rads/min)**   Total
                                                                   Dose**

  Average Background Radiation                    0.005 rad.min    37.8 rads

  SAA, one daily in 60 minutes                    0.115 rad/min    37.8Krads

  Solar Flare, one year dose in 120 min., one     21 rad/min       2.52 rads
  time                                                             
  ----------------------------------------------- ---------------- -----------

A safety factor of 2 is required if every fiber lot is tested and is 4
if only the qualification lot is tested.

#### Deep dielectric charging (4.9.6.2)

The external cable shall be susceptible to discharge damage due to the
potential differential charge of various cable components developed by
ion and electron flux.

#### 

#### 

#### 

#### Static-ESD environment (4.9.6.2)

The fiber optic cable shall not be susceptible to discharging damage in
minimum ESD potential of 15000 Volts.

### Vacuum (4.9.7) 

The fiber optic cable shall withstand 15 years in orbit without
degradation.

### Temperature survivability (4.9.8) 

#### Internal requirements 

The interior fiber optic cable shall withstand thermal excursions
throughout its life from -35°C to 100°C.

#### External requirements 

The exterior fiber optic cable shall withstand thermal excursions
throughout its life from -121°C to 200°C.

### Thermal cycle/shock (4.9.9)

#### Internal requirements 

The interior fiber optic cable shall withstand thermal cycles throughout
its life from -35°C to 100°C. Each cycle shall have a 90minute period.

#### External requirements 

The exterior fiber optic cable shall withstand thermal excursions
throughout its life from -121°C to 200°C. Each cycle shall have a 90
minute period.

### Reactivity in fluids (4.9.10) 

The fiber optic cable and its identification shall be impervious to the
fluids for cleaning and that may exist in transport to orbit or while in
service.

### Humidity (4.9.11) 

Both the internal and external cables shall be subjected to terrestrial
humidity conditions (10% to 100% RH) for five years. Additionally they
shall experience on orbit humidity levels as follows:

#### Internal cables 

Interior fiber optic cable shall not degrade when exposed to 20% to 100%
relative humidity for 15 years

#### External cables 

Exterior fiber optic cables shall not degrade when exposed to 0%
relative humidity for 15 years.

### Ambient light susceptibility (4.9.12) 

External cables shall not accept more than --57 dBm when exposed to 1500
W/m^2^ of white light.

### 

### 

### 

### 

### Mechanical (4.10)

### Strippability (4.10.1)

The cable components (the jacket, strength member and cable buffer \[if
applicable\]) shall be hand removable using standard wire mechanical
strippers. The removal/preparation of any cable component shall not
affect (damage, deform or stretch) any other cable component or stress
the optical fiber in any way.

#### Cable jacket strippability (4.10.1.1)

A five centimeters length of cable jacket shall be removable by hand
after it is circumferentially cut.

#### Cable buffer strippability (4.10.1.2)

The cable buffer shall be removable by hand without affecting the
remaining buffer tube or the fiber and its coating.

#### Fiber buffer strippability (4.10.1.3)

The fiber buffer shall be capable of withstanding a pull or push force
of 2.5 kilograms (5.5 pounds) over a length of 2.5 mm (0.1 inches)
without delaminating or debonding from the glass fiber.

### 

### 

### 

### 

### Cable fiber life 

The fiber shall survive 15 years in orbit. The worst case cable bend
radius is 1.25 cm. The fiber n value shall be derived by the strength
tests per paragraph following in this section and the fiber life shall
be calculated using the following equation:

Time to Failure (Tf) = B(a/p)^-n^ p^-2^

B = 2\[AY^2^(n-2)KIC^(n-2)^\]^-1^

Where:

a = applied stress

p = fiber proof stress

n = fiber n value which shall be measured for each fiber lot

Y = geometric constant for glass = 1.24

KIC = critical stress-intensity factor for fused silica = 0.789MPa m^-2^

A = known from static fatigue data and cable be calculated as:

Log A = 3.289n -- 10.05 (GPa-s)

*(equations above are taken from Optical Fiber Telecommunications II,
Miller and Kaminow, © 1988 AT&T and Bell Research, Inc and Academic
Press, Inc.)*

#### Intrinsic fiber strength 

The intrinsic strength zone for fibershall be a minimum of 450 KPSI
(11.0 lbs.) with a hermetic coating and 600 KPSI (14.4 lbs.) without a
hermetic coating. One hundred percent of fiber manufactured to this
specification shall be subjected to proof testing during the
manufacturing process with a minimum test limit required to meet 3.6.2.

#### Dynamic strength (4.10.2)

Each lot of cabled fiber will be subjected to dynamic strength tests
which be run on a minimum of 20 each 2 meter length samples taken from
the beginning and end of the draw (40 samples total). When tested in
accordance with the procedure in paragraph 4.10.2, a minimum of 70% of
the samples will have breaking strengths in the intrinsic zone of the
Weibull Distribution formed from the 40 samples and no sample shall
break at less than the minimum proof test limit.

### Crush resistance (4.10.3)

Cable shall withstand a minimum 50 pound compressive loading over 6.25
mm.

### Cable bend 

The cable shall withstand a 90 degree bend having a radius of 1.25
centimeter (0.5 inches) with less than 0.3 dB attenuation change. The
cable shall also withstand 5 wraps around a 5 cm (2 inch) mandrel in
accordance with EIA/TIA 455 FOTP 37 procedure at room temperature and
--121°C while meeting the loss rate of paragraph 3.4.2.

[]{#__RefHeading___Toc480965251 .anchor}Cyclic flexing (4.10.4)

The cable shall withstand 2000 cycles around a 12 mm diameter mandrel ±
90° at temperatures varying from room temperature to 200°C. The induced
loss shall not increase more than 0.3 dB.

### Cable weight (4.10.4)

The weight per unit length of the typical cable shall be in accordance
with Appendix A but shall not exceed 8.2 kilograms per 1000 meters (5.5
lbs per 1000 feet).

### Shock (4.10.6)

The fiber optic cable shall survive 3 shocks at 50G, 11 millisecond,
half sine pulses in the axial direction and perpendicular to the axis (a
total of 12 shocks).

### Vibration (4.10.7)

The fiber optical cable shall survive 10 G peak vibration in the axial
direction and perpendicular to the axis.

### Acoustic (4.10.7)

External cables shall be subject to sound levels listing in Table III.
This sound levels translate mostly to vibration. Verification shall be
per 4.10.7 (Vibration)

III. Shuttle Payload Sound Spectrum During Launch

  ------------------------------- ---------------------------------------
  31.5 Hz                         127 dB

  40 Hz                           129 dB

  50 Hz                           131.5 dB

  63 Hz                           135 dB

  80 Hz                           136 dB

  100 Hz                          136 dB

  125 Hz                          135 dB

  160 Hz                          134 dB

  200 Hz                          133 dB

  250 Hz                          132 dB

  315 Hz                          131 dB

  400 Hz                          129.5 dB

  500 Hz                          128 dB

  630 Hz                          124.5 dB

  800 Hz                          124.5 dB

  1000 Hz                         123 dB

  1250 Hz                         121.5 dB

  1600 Hz                         120 dB

  2000 Hz                         118.5 dB

  2500 Hz                         116.5 dB
  ------------------------------- ---------------------------------------

## Physical 

### Fiber core (4.11.3.2.1)

The fiber core shall be Germania doped silica or pure silica and have an
active diameter of 100 ± 2 microns, and ovality not to exceed 5% and
shall be verified. Every fiber lot shall have a Certificate of
Conformance verify the correct dopent material and levels and index
profile.

### Fiber cladding (4.11.3.2.1)

The fiber cladding shall be doped silica and the outside diameter of 140
± 2 microns, with ovality not to exceed 4% and core/cladding offset not
to exceed 2%. If a removable coating is used, the fiber cladding shall
be 170±2 microns with a maximum ovality of 4% and a maximum core/clad
offset of 1.2%.

### Hermetic coating (4.11.3.2.2)

#### Internal 

A hermetic seal coating if be applied shall be as specified in Appendix
A. The coating shall be uniformly applied and defect.

#### External

A hermetic seal coating is not required to be used on an exterior use
only cable.

### Fiber coating (4.11.3.2)

The fiber coating shall be of the materials and construction as
specified in Appendix A. The outside diameter shall be 170 ± 2.0 microns
with a wall thickness tolerance of 1 micron. The fiber core to fiber
coating concentricity shall be 4 microns maximum. The fiber and fiber
coating and coating shall be continuos and without defect when inspected
at 400X magnification. Fiber coatings and cables shall be dimensionally
uniform, free of lumps, kinks, splits, scraped or abraded surfaces and
inclusions.

### 

### 

### Cable jacket color

#### Translucent cable jacket (4.11.3.1)

A translucent cable jacket will be used when printed information on
sub-surface layers are intended to show through the jacket for
identification. When used with a transparent or translucent cable
jacket, one or more of the strands of strength member will be colored
violet in accordance with MIL-STD-104.

#### Opaque cable jacket 

When an opaque or colored cable jacket is used, the color will be in
accordance with MIL-STD-104. Although the jacket may be somewhat
translucent, the coloration of the jacket is not intended to reveal any
information contained on the inner layers of cable construction per
Appendix A. The jacket color shall be uniform.

### Cable jacket (4.11.3.2)

The cable jacket shall provide environment and physical protection to
the cable elements. The cable jacket shall be applied concentrically to
the cable core to maintain circularity in the completed cable. The cable
shall be made of material as specified in Appendix A, with an outside
diameter of 2.10 ± 0.05mm and a wall thickness of 0.25mm, minimum. The
outer jacket shall be free of cuts, burnt areas, abrasions, holes,
roughened areas, bulges, thin spots and discontinuities when inspected
at 5X magnification.

### Cable stability (4.11.5)

The cable jacket and buffer shall be dimensionally stable and shall not
shrink more than 0.4 percent after being subjected to thermal shock
cycles per section 4.10.13.

### Identification marking (4.11.3.1)

The finished cable shall be identified by a printed marking. This
printed marking may be applied either outside of the jacket (if it is
opaque or colored) or on an internal cable member (if viewing
information is intended to be viewed through the jacket.

### Legibility (4.11.3.1)

Printed marking shall be sized and oriented on the finished cable to be
legible normally corrected vision.

#### Opaque jacket

When finished cable is constructed in accordance with 3.11.2.5.1.a,
printing shall be of sufficient contrast against background color to be
discernable to the unaided eye at a distance of 0.5 meter.

#### Translucent jacket 

When finished cable is constructed in accordance with 3.11.2.5.1.b,
printing shall be of sufficient contrast against background color to be
discernable to the unaided eye at a distance of 0.5 meter. Colored
strands of the shall be visible through the jacket.

### Marking durability (4.11.4)

The marking shall be permanent upon completion of the reactivity to
fluids test per 3.5.14 as defined below:

#### Opaque jacket

When finished cable is constructed in accordance with 3.11.2.5.1.a,
printed markings shall be of such a material and installed such that the
printing withstands the solvent durability qualification test of Section
4.10.14. Within a marking group of 3.11.2.5.6, no more than three
consecutive characters are allowed to be illegible if both adjacent
marking groups of 3.11.2.5.6 are intact.

#### Translucent jacket

When finished cable is constructed in accordance with 3.11.2.5.1.b,
printing shall be of such a material and installed such that
installation of over-layers does not result in damage to the printing in
excess of 3.11.2.5.9. b. Within a marking group of 3.11.2.5.6, 10% of
the total characters of that group are allowed to be illegible if both
adjacent marking groups of 3.11.2.5.6 are intact and paragraph a of this
section is met.

### Printing groups (4.11.3.1)

Printed marking groups of 3.11.2.5.6 shall be installed at .25 meter
intervals. Printed marking groups shall include the following:

a\. Full part number

b\. Supplier's CAGE code

c\. Unique lot/date code

### Cable buffer (4.11.3.2.3)

The cable buffer shall be of the materials and construction specified in
Appendix A, and has a maximum outside diameter of 785 microns. The
buffer shall be free of cut, holes, bulges, thin spots and
discontinuities when inspected at 10X magnificaiton.

### Cable strength member (4.11.3.2.3)

The cable strength member shall be braided material in accordance with
Appendix A, with an outside diameter of 1.6mm, maximum. The braid shall
cover a minimum of 90 percent of the cable buffer. The strength members
shall be uniform and laid with no discontinuities when inspected at 10X
magnification.

### Lengths and splices 

Continuous cable lengths shall be no shorter than 100 meters (328 feet)
unless otherwise specified by the purchase order. The fiber shall not be
spliced within a given spool of cable. The splice free spool shall be
verified in accordance with EIA/TIA-455-60 (length) and EIA/TIA-455-61
(splices).

  ------------- ----------------- ----------------- ----------------------
                                                    

                                                    

                                                    

                                                    

                                                    

                                                    
  ------------- ----------------- ----------------- ----------------------

[]{#__RefHeading___Toc480965279 .anchor}QUALITY ASSURANCE PROVISIONS

## General

This section establishes the requirements for verifying cable
performance, operability, and physical characteristics by test,
analysis, demonstration or examination. The test program shall assure
that the cable and its documentation meet the requirements established
in 3.0, 5.0, 6.0 and Appendix A.

The quality assurance provisions shall consist of the following
classifications of inspections as follows:

a\. Qualification

## Responsibility for inspection

### Supplier responsibilities

Unless otherwise specified in the contract or purchase order, the
supplier is responsible for the performance of all inspection
requirements and acceptance tests as specified herein and in Table XII.
The specification custodian reserves the right to perform or witness any
of the inspections set forth in the specification where such inspections
are deemed necessary to assure supplies and services conform to
requirements.

All items must meet all requirements of 3.0 and 5.0 and Appendix A. The
inspections set forth in this specification shall become part of the
supplier's overall inspection system or quality program. The absence of
any inspection requirements in the specification shall not relieve the
supplier of the responsibility of assuring that all products or supplies
submitted to the government for acceptance, comply with all requirements
of the contract.

### Test equipment and inspection facilities

Provision for test and measuring equipment and inspection facilities of
sufficient accuracy, quality, and quantity to permit performance of the
required inspections shall be the responsibility of the supplier and
approved by the specification custodian.

Unless otherwise specified, all examinations and tests shall be
performed within the following ranges of ambient temperature, humidity
and pressure.

a\. Temperature: Room ambient ( 20^0^C to 30^0^C)

b\. Relative humidity: Room ambient (10-80 %)

c\. Barometric pressure: 24 to 31 inches of mercury

### Test equipment error

Equipment used to measure parameters shall not introduce errors greater
than 10 percent of the tolerance on the parameter, or in the case of a
single limit tolerance, the test equipment error shall be applied to the
specified parameter in a manner to assure the parameter is being met.
Accuracy of less than one-tenth of the tolerance shall require approval
of the specification custodian. Test equipment calibration shall comply
with MIL-STD-45662 or as an alternative, the test equipment calibration
shall be current and certified as defined in the domestics contracts
paragraph of MIL-STD-45662.

## Product assurance program

### Quality and reliability assurance plan

The supplier shall prepare a quality and reliability assurance plan. The
plan shall be submitted for review and approval as required by the
purchase contract. Use NHB 5300.4 (3G) as a guideline for the inspection
requirements in addition to the inspection required to insure part
quality.

### Critical hardware notation

The supplier shall establish procedures by which their purchase orders
(PO's), purchase requests (PR's), request for proposals (RFP's),
contracts, and subcontracts, and those of their subsuppliers and
suppliers down to the lowest tier, shall include the following
information. Additionally, each sheet of each drawing and the first
sheet of each control document (i.e.; process, specification, procedure,
etc.) shall also provide this information. The information shall be
printed or stamped in bold face type.

> FOR USE IN MANNED SPACE FLIGHT.
>
> MATERIALS, MANUFACTURING, AND WORKMANSHIP
>
> OF THE HIGHEST QUALITY STANDARD
>
> ARE ESSENTIAL TO ASTRONAUT SAFETY.

### Disposition and corrective action

The supplier shall recommend the disposition or corrective action for
all analyzed discrepancies.

Implementation of the recommended disposition or corrective action shall
be at the sole discretion of the specification custodian and shall not
be implemented without written approval from the specification
custodian.

##  {#section-97 .unnumbered}

## Preparation of optical test samples

The termination method of the connectors/terminations joining the test
cable to the test set shall be proven to be low loss and low variation
in their environment throughout the duration of the tests. The
connectors shall be polished to achieve a Physical Contact (PC)
interface geometry per BellCore GR 326.

## Materials inspection (3.3)

Materials inspection shall consist of certification, supported by
verifying data, that materials used in fabricating the delivered cable
are in accordance with the requirements of section 3.3 and Appendix A.

## Product acceptance test

### Acceptance of product for delivery (3.2.2.1.2, 7.0)

Product Acceptance Tests shall consist of those inspections and tests
listed in Table XII and shall be performed in accordance with the
approved acceptance test plan in accordance with section 3.2.2.1.2.

### Unit of manufacture

The unit of manufacture shall be defined by the purchase order.

### Sample unit

Sample length shall be one (1) meter for dimensional and mechanical
inspection, as required for numerical aperture (NA), attenuation and
bandwidth tests.

## Workmanship verification

Inspect for quality and workmanship per EIA/TIA 455 FOTP 13 at the
required magnifications.

### Inspection Equipment

Optical Magnifier, 10X power (maximum) for examination of the product
for damage and defects such as cracks, splits in outer jacket, etc.

Optical microscope, 400X minimum, with video processing equipment for
verification of fiber core, cladding and coating dimensions.

## Optical Verification (3.4)

The following are the procedures required to make optical loss
measurements for the International Space Station Program. The induced
and substitution loss measurement procedures as well as the test
equipment and SRD fabrication procedures are outlined below. Although
the EIA/TIA Specifications are referenced, the following procedures take
precedence in the case of conflict.

### Optical test set 

Below are the functional requirements of the optical test equipment. The
RIFOCS CP-1107 and CP-1148 as well as other RIFOCS equipment built for
Space Station meet these requirements.

#### Light source

The optical source shall be an optically and modally stabilized having a
center wave length between 1330 ± 30 nanometers. The far field ½ sine
angle output of the source shall conform to Table IV when measured per
EIA/TIA 455 FOTP 47B. The source bandwidth shall be within 60
nanometers. The optical output power shall not be modulated.

IV. []{#__RefHeading___Toc480965383 .anchor}Far Field Output

+---------------------------------------------+------------------------+
| NA                                          | Power                  |
|                                             |                        |
|                                             | (Percent)              |
+---------------------------------------------+------------------------+
| 0.093 to 0.118                              | 80                     |
+---------------------------------------------+------------------------+
| 0.139 to 0.167                              | 60                     |
+---------------------------------------------+------------------------+
| 0.182 to 0.208                              | 40                     |
+---------------------------------------------+------------------------+
| 0.224 to 0.250                              | 20                     |
+---------------------------------------------+------------------------+
| 0.267 to 0.290                              | 5                      |
+---------------------------------------------+------------------------+

#### Source monitoring equipment (SME)

The source output power shall be capable of monitoring and recorded
without disconnecting the test specimen. These measurements are used to
allow corrections to compensate for source output variations.

Equipment that does not have continuous source monitoring capability,
shall include a Certificate of Compliance that the optical source
remains optically stable to ± 0.03 dB and modally stable within 1
percent of the measured optical power at each specified ½ sine ∠ for the
duration of the testing sequence. The validation of the source shall be
obtained before and after the testing and shall be submitted with the
test data.

#### Detection equipment

The detector and associated electronics shall be capable of measuring
all energy exiting from the fiber and have a linear active area at least
10 times larger than the fiber core. They shall be linear at the
wavelengths used, and over the expected range of power. The resolution
of the detection equipment shall be as follows in Table V:

V.  []{#__RefHeading___Toc480965384 .anchor}Equipment Resolution
    Requirements

  -------------------------------------------------- --------------------
  Interconnection Device Loss                        Resolution

  \>.5 dB                                            .1 dB

  \<.5 dB                                            .05 dB
  -------------------------------------------------- --------------------

The detector shall be linear within 3 percent over the duration of the
test and over a 23 ± 5^0^C temperature range.

#### Reference cable set and fabrication

The reference cable 6 ± 0.6 meters of fiber optic cable specified herein
or optically equivalent and terminated with ST connectors polished to
attain a physical contact interface BellCore GR 326. The substitution
loss of the reference cable shall not exceed 0.30 dB and the fiber core
shall be free from surface defects when viewed at 100 power
magnification.

SRD Cable sets are high quality optical jumpers used for optical
testing. Their performance is continually monitored and logged to insure
consistent performance. Below are the detailed instructions for building
the cable sets.

Step 1 - Connect a source (s) cable to a mode conditioned optical source
and a detector (d) cable to an optical power meter. Connect the cables
together and measure and record the optical power throughput as P~sd~.

> s cable d cable

Measure: P~sd~ (from previously fabricated SRD cable set)

Step 2 - Terminate a 6 meter length of fiber optic cable with ST-PC
connectors. The endface geometry of the finish connector shall be PC in
accordance with BellCore GR 326. This cable will be called a PC cable.
The cable can be of a suitable construction to facilitate the testing
application however, the fiber must be the same fiber as used in the
Units Under Test (UUT) are to be used. Connect the PC cable to the s and
d cables and measure and record the optical throughput as P~PC~. L~PC~
shall not exceed 0.4 dB. The cables shall not be disconnected from the
source until the last step is completed. Calculate the loss of the PC
cable as follows:

> s PC d

Measure: P~PC~

Calculate: L~PC~ = P~sd~ - P~PC~ \</= 0.30 dB

Step 3 - Cut the cable approximately two meters from the source end of
the fiber the cable and install an ST-PC connector one each side of the
cut cable. The endface geometry of the finish connector shall be PC in
accordance with BellCore GR 326. Measure and record the OPT as P~I1~.
Calculate the insertion loss (L~I1~) as follows:

> s cable S d cable

Measure: P~I1~

Calculate: L~I1~ = P ~PC~-P~11~ \</= 0.30 dB

Step 4 - Cut the cable approximately two meters from the detector end of
the fiber the cable and install an ST-PC connector one each side of the
cut cable. The endface geometry of the finish connector shall be PC in
accordance with BellCore GR 326. Measure and record the OPT as P~I2~.
Calculate the insertion loss (L~I2~) as follows:

s cable S R D d cable

Measure: P~I2~

Calculate: L~I2~ = P~I1~ - P~I2~ \</= 0.30 dB

Step 6 - Remove the new R cable and connect the new S and D cables
together. Measure and record the OPT (P~SD~). Calculate the R cable Loss
as L~R~ = P~SD~ - P~SRD~ where P~SRD~ = P~I2~.

> s cable S D d cable

Calculate the Total Insertion Loss: LI = L1I + L2I 0.03dB

Step 5 -- Calculate L~R~ and identify the cable as show below:

> s cable S R D d cable

1 2 3 1 6 4 5 1

NOTES:

Label 1 - ID, month, year and serial number for the SRD cable set

Label 2 - SR

Label 3 - RS

Label 4 - RD

Label 5 - DR

Label 6 - Ref Cable Loss "Lref = X.XX dB" (X.XX = P~SD~ - P~SRD~
measured on the new SRD set)

[]{#__RefHeading___Toc480965303 .anchor}MTC cable

An MTC cable shall 6.0 ± 0.6 meters of fiber optic cable which uses the
fiber specified herein. It shall be terminated with ST connectors and
polished to achieve a physical contact interface in accordance with
BellCore GR326. The substitution loss shall not exceed 0.4 dB and the
cable shall be free from surface defects when viewed at 100 power
magnification. This cable shall be protected and stored in a safe and
environmentally stable area when not used.

When using a RIFOCS test set, the MTC cable can be RIFOCS' P/N
333-110-03.

### Optical test set calibration

The test set calibration consists of two processes; one for the source
and detector and one for the S and D cables. The measurement procedure
outlined below is very rigorous and is required to attain 0.10 dB
measurement accuracy.

#### Meter and source calibration using the MTC cable

Clean each termini optical surface on the appropriate MTC cable using a
clean lint free wipe wetted with N-Propyl alcohol (as required) followed
by a clean lint free wipe (dry) (as required). Using clean, dry
compressed air, blow the connector receptacle on the source and
detector. If the mode conditioner is physically separatable from the
source, connect the MTC cable to the configuration that is calibrated,
usually the source with out the mode conditioner. Disconnect the source
side of the MTC cable from the source and reclean the source receptacle
and the mating optical terminus. Repeat the cleaning remating steps
until three consecutive OPT measurements agree to within 0.03 dB. Repeat
this process on the detector side of the MTC Cable interfaces. If this
is the first use of the test set, MTC cable or after each calibration,
record the final OPT in the equipment log. Verify that the recorded OPT
is within 0.1 dB of the certified source output minus the MTC cable loss
(the loss is labeled on the cable). If this is not the first use or not
after calibration, record the final OPT into the equipment log as
PMTC(date). The OPT shall not exceed 0.1 dB change from the other logged
readings.

#### SRD cable set calibration

For optical test sets that have a mode conditioner that can be removed
from the test set: Clean the connectors on a small jumper and the
optical source port and the mode conditioner ports. Clean and connect
one end of the jumper to the source and the other to the mode
conditioner input. Clean and connect the MTC cable to the mode
conditioner output and the other end of the optical power meter. Note
the OPT. Disconnect and clean the small jumper to source interface until
three readings agree to within 0.03 dB. Repeat for the small jumper to
the mode conditioner interconnect. Remove the MTC cable.

Clean each connector optical surface on the appropriate S cable and D
cable using a clean lint free wipe. Wet with N-Propyl alcohol as
required than follow by a clean lint free wipe (dry). Clean the
connector receptacle on the source (or mode conditioner output port if
it is a separate unit which hereafter will be referred to the "source")
and detector. Install the S and D into the source and the detector and
mate the S and D cables. Disconnect the S from the source and reclean
the source receptacle and the mating optical terminus. Repeat the
cleaning remating steps until three consecutive OPT measurements agree
to within 0.03 dB. Repeat this process on the D to detector receptacle
and then on the S to D interfaces. Record the final OPT as P~SD~ and the
meter monitor power as P~MSD~ (if SEM is used).

S Cable D Cable

Disconnect the S and D cables and install the R cable so that the source
side of the R cable connects to the S cable and the D side of the R
cable connects to the D cable. Note the OPT. Unmate clean and remate the
S to R cable junction until three OPTs agree to within 0.03 dB. Repeat
for the R to D cable junction. Record the final OPT as P~SRD~. If P~SRD~
deviates greater than 0.2 dB for L~R~ list on the Reference cable label
remove and discard this SRD cable set.

S Cable R Cable D Cable

### Induced loss (3.4.4)

The change in the attenuation of the fiber induced by exposure to
environmental or physical test conditions shall be measured in
accordance with EIA/TIA RS 455 FOTP 20 with the following parameters:

a\. The source and detector shall comply with 4.8.1.1.

b\. An optical power divider (per paragraph 2.2 of FOTP 20) shall not be
used.

c\. The test sample shall be terminated with ST-PC connectors on each
end. The endface geometry shall be in accordance with BellCore GR 326
CORE.

d\. A reference sample shall not be used and the reference power shall
be the initial optical power through the test specimen.

e\. The optical test setup shall not be disconnected between the time
the baseline value is established and measurement of power throughput
after completion of the primary test.

#### Optical measurements

The following Optical Power Throughput measurements shall be recorded:

P~MSDD~ = Meter Optical Power Throughput (OPT), SD - Cable, Induced Loss

P~MDB~ = Meter OPT, Before, Induced Loss

P~MDX~ = Meter OPT, After or Subsequent, Induced Loss

P~SSD~ = OPT, SD - Cable, Induced Loss

P~DB~ = OPT, Before, Induced Loss

P~DX~ = OPT, After or Subsequent, Induced Loss

#### Test set-up

The test equipment shall be in accordance with 4.8.1 and calibrated in
accordance with 4.10.12.2. The test set shall remain connected to the
test sample during the environmental exposure.

#### Test procedure

The test setup shall not be separated from source once testing has
begun. Induced attenuation measurements shall be made immediately
before, during and/or after tests as specified in the applicable
mechanical or environmental test method. Replace the R Cable with the
unit under test.

S Cable Unit Under Test D Cable

Clean the test sample to S Cable to UUT interconnection and record the
OPT. Reclean the interconnection until three consecutive OPT
measurements agree to within 0.03 dB. Repeat for the UUT to D cable
interconnection. Record the final OPT measurement as P~DB~ and the meter
monitor power as P~MDX~. Run the environmental test. Measure and record
the test sample OPT at the specified intervals as P~DX~ where x
indicates the interval . After the environmental test is complete,
measure the final OPT and record it as P~DF~ and the meter monitor power
as P~MDF~.

#### Induced loss calculations

Induced loss shall be calculated as follows when the power is measured
in watts

∆L~D~ (dB) = 10
log$\left( \frac{P\text{DB}}{P\text{DX}} \cdot \frac{P\text{MDX}}{P\text{MDB}} \right)$

or when the power is measured in dB

∆L~D~ (dB) = (P~DB~-P~DX~) - (P~MDB~ - P~MDX~)

### Substitution loss (3.4.5)

(Reference EIA/TIA 455 FOTP-171, however these requirements supersede
FOTP-171 when conflicting.)

#### Optical measurements

The following Optical Power Throughput measurements shall be recorded:

P~MSD~ = Meter Optical Power Throughput (OPT), SD - Cable, Substitution
Loss

P~MSI~ = Meter OPT, Initial, Substitution Loss

P~MSF~ = Meter OPT, Final, Substitution Loss

P~SD~ = OPT, SD - Cable, Substitution Loss

P~SI~ = OPT, Initial, Substitution Loss

P~SF~ = OPT, Final, Substitution Loss

#### Test equipment set up 

The test equipment shall be per 4.8.1 and calibrated per paragraph
4.8.2. The test set may be disconnected from the test sample during the
environmental exposure.

#### Test procedure

Replace the R Cable with the unit under test.

S Cable Unit Under Test D Cable

Clean the test sample to S Cable interconnection and record the OPT.
Reclean the interconnection until three consecutive OPT measurement
agree to within 0.03 dB. Repeat this process on the test sample to D
Cable interconnection to test sample. Record the final OPT as P~s~ and
the meter monitor power as P~MS~.

#### Substitution loss calculations

The substitution loss shall be calculated as follows when the power is
measured in watts

L~S~ (dB) = 10
log$\left( \frac{P\text{SD}}{PS} \cdot \frac{P\text{MS}}{P\text{MSD}} \right)$

or when the power is measured in dB

Substitution Loss (dB) = (P~S~-P~SD~) - (P~MS~ - P~MSD~)

#### OTDR loss measurements

TBD John White will supply verication

## Environmental requirement verification 

### Fungus (3.5.1)

Test per MIL-STD-810, Method 508 and MIL-STD-454 Requirement 4. The test
environment shall be per Table VI.

VI. []{#__RefHeading___Toc480965385 .anchor}Fungus Environmental Test
    Conditions

  ------------------------------------ ----------------------------------
  Test Condition                       Test Limit

  Humidity                             90% to 100%

  Temperature                          23°C to 30°C

  Duration                             28 Days

  Pass/Fail                            Grade 0
  ------------------------------------ ----------------------------------

### Toxic hazard (3.5.2)

By test

The test shall be performed in accordance with NASA-STD-6001 Test 7 with
the test conditions specified in Table VI. Ten samples that are at least
10 meters apart in a cable run length shall be tested.

#### By analysis 

The toxic hazard ratings for materials that have been previously tested
are documented in MSFC-HDBK-527/JSC 09604 or the Material And Process
Technical Information System (MAPTIS) electronic data base located at
George C. Marshall Space Flight Center, Huntsville, Al.

### Odor (3.5.3)

#### By test 

The test shall be performed in accordance with NASA-STD-6001 Test 7 with
the test conditions specified in Table V.

#### By analysis 

The odor ratings for materials that have been previously tested are
documented in MSFC-HDBK-527/JSC09604 or the Material And Process
Technical Information System (MAPTIS) electronic data base located at
George C. Marshall Space Flight Center, Huntsville, Al.

### Flammability (3.5.4)

#### By test 

The flammability test shall be conducted per NASA-STD-6001 Test 1 using
the test details listed in Table VII.

VII. []{#__RefHeading___Toc480965386 .anchor}Flammability Test
     Requirement Details

+----------------------+-----------------------------------------------+
| ### Test Requirement | **Test Detail**                               |
+----------------------+-----------------------------------------------+
| Environment          | 30% O~2~ and 70% N~2~ at 68.9 KPa (10psia)    |
+----------------------+-----------------------------------------------+
| Sample Orientation   | 60° per Figure 7 of NASA-STD-6001             |
+----------------------+-----------------------------------------------+
| Sample Length        | Fourteen samples 40cm (16 inches) long        |
+----------------------+-----------------------------------------------+
| Ignition/Heat        | 1100°C and a 6.4 cm high flame,               |
| Duration             |                                               |
|                      | 10 minute maximum burn time                   |
+----------------------+-----------------------------------------------+
| Self Extinguishing   | Within 30 seconds after the ignition source   |
|                      | is removed.                                   |
+----------------------+-----------------------------------------------+
| Burn Events          | No sparking                                   |
|                      |                                               |
|                      | No sputtering                                 |
|                      |                                               |
|                      | No flaming dripping                           |
|                      |                                               |
|                      | No flame transfer by burning debris           |
+----------------------+-----------------------------------------------+

#### By analysis 

None. Although the materials that are used on the fiber optic cable are
also used as insulators on electrical wire, the heat dissipation of the
fiber optic cable sufficiently differs from the wire to warrant testing
rather than verification by similarity to a wire product.

### Vacuum Outgassing (3.5.5)

#### By test 

The finished cable shall be conditioned at 125oC at a pressure 10-6 torr
for 48 hours during the manufacturing or preshipment processing. The
test shall be per ASTM E595 using the test parameters listed in Table
VIII.

VIII. []{#__RefHeading___Toc480965387 .anchor}Outgassing Products/Vacuum
      Stability Test Conditions

  --------------------------------------- -------------------------------
  **Condition**                           **Limits**

  Pressure                                1.3 X 10^-4^ Pa max.

  Temperature                             124°C to 126°C

  Condensable Plate Temperature           24°C to 26°C

  Vacuum exposure time                    24 hours
  --------------------------------------- -------------------------------

#### By analysis 

The data for total maximum loss (TML) and maximum volatile condensable
material (VCM) content of materials that have been previously tested is
documented in MSFC-HDBK-527/JSC 09604 or the Materials And Process
Technical Information System (MAPTIS) electronic data base located at
George C. Marshall Space Flight Center, Huntsville, Al.

  --------------------------------------- -------------------------------
                                          

                                          

                                          

                                          

                                          

                                          
  --------------------------------------- -------------------------------

[]{#__RefHeading___Toc480965332 .anchor}Radiation (3.5.6)

#### Ionizing radiation (3.5.6.1)

Total dose for verification 55.44 Krads using safety factor of 2 per ISS
requirement.

Focus on only those exposures that will affect the fiber performance.

SAA, 13.8 rads/day over 60 min, dose rate = .23 rads/min, for up to a
total dose of 50.4 krads

Solar Flare, 42 rads/min for upto 5040 rads.

Total dose performance testing shall be conducted in accordance with
EIA/TIA 455 FOTP 64. Two 100 meter samples of cable from each end of
each lot of fiber shall be. Additional length is needed run outside of
the radiation test equipment. Optical power from source specified in
4.8.1.1 shall modified as required to have a maximum output of microwatt
and shall be transmitting throughout the duration of the test. The
optical power throughput shall be measured after the set up and before
the initial exposure, every XX minutes during the exposure, and for 24
hours after the exposure. The dose rate test conditions shall be either
option 1, or option 2 with the thermal environment steady at -121°C +/-
4 °C. The temperature shall stay at -121°C for six days and then return
to 25°C at no greater than 1°C/min, remaining at 25°C for the next 24
hours of exposure. At the completion of the seventh day, the cables
shall be actively monitored for an additional 24 hours without radiation
exposure at 25°C.

**Option 1:** Dose rate shall be 42 rads/min for two hours and then dose
rate shall be decreased to 0.5 rad/min for six days or until saturation
has been reached. The seventh day the temperature shall return to 25°C
and the test shall be continued for an additional 48 hours. Upon
reducing the dose rate, the time between the end of the high dose rate
exposure and the beginning of the low dose rate exposure shall not
exceed 30 minutes in which the cable under test is not being exposed to
the gamma source.

**Option 2:** Two tests shall be conducted and the results of the test
shall be used to determine the actual performance of the optical fiber
at a low dose rate of .23 rads/min to a total dose of 50.4 krads. For
the first test, the dose rate shall be 42 rads/min until a total dose of
55 Krads has been reached. For the second test the dose rate shall be
less than 10 rads/min to a total dose of 55 Krads. If the lower dose
rate test takes more than seven days then the following thermal
environment shall be used. The temperature shall stay at -121 C for six
days, return to 25°C on the seventh day with exposure continuing for 24
hours at 25°C.

#### Static-EMI environment (3.5.6.4)

The test shall be performed on cable assemblies that use electrically
conductive coatings only. An ESD event meter shall be calibrated for the
background events and then used to detect ESD event with the capacitor
probe is brought near to the fiber. After the fiber has been subjected
to the test, the fiber be inspected per 4.11.3.1 for defect and/or
damage at 400 X magnification +/- 1 cm from the probe location and
ground clamp location.

#####  Human Body Model

These cables shall be subjected to a spark test per SSP 30253 except the
fiber coating resistance over distance shall be considered as part of
the 1500 resistor. For example, if the fiber coating has a resistivity
of 500 ohms per 10 cm, than the test conducted with the capacitor probe
at 10 cm shall use a 1000 ohm resistor in series with the fiber and
ground clamp.

#####  Machine Model

### Vacuum (3.5.7) 

Test per 4.10.12 -- Temperature Survivability.

### Temperature survivability (3.5.8)

100 meters of fiber optic cable shall be subjected to MIL-STD-202F
Method 108A Test Condition C using the test conditions in Table IX. The
cable shall be inspected to verify pysical conformance to Appendix A per
4.11.3.2.

IX. []{#__RefHeading___Toc480965388 .anchor}Temperature Survivability
    Test Conditions

  ---------------------------- -------------------- ----------------------
                               **Internal**         **External**

  **Pressure**                 1 X 10^-6^ max       1 X 10^-6^ max

  **Low Temperature**          -46°C max            -135°C max

  **High Temperature**         115°C min            215°C min

  **Duration**                 500 Hours            500 Hours
  ---------------------------- -------------------- ----------------------

### Thermal shock (3.5.9)

100 meters of fiber optic cable shall be exposed to thermal shock per
MIL-STD-202F Method 107E using the test conditions in Table X. The
temperature transition duration shall be less than 2 minutes.

X.  []{#__RefHeading___Toc480965389 .anchor}Thermal Shock Test
    Conditions

  ------------------------- ----------------------- ----------------------
                            **Internal**            **External**

  **Low Temperature**       -46°C max               -135°C max

  **Low Temperature Dwell   See Table 107-7 in      See Table 107-7 in
  Time**                    MIL-STD-202F            MIL-STD-202F

  **High Temperature**      115°C min               215°C min

  **High Temperature        See Table 107-7 in      See Table 107-7 in
  Duration**                MIL-STD-202F            MIL-STD-202F
  ------------------------- ----------------------- ----------------------

### Reactivity in fluids (3.5.10) 

The samples shall be tested in the fluids listed in Table XI in
accordance with NASA-STD-6001 Test 15 except the samples shall be 2
meters long and weighed to the nearest 0.01 gram. A virgin sample shall
be used for each fluid. None of the cable components shall show signs of
degradation when inspected per 4.11.3.1 for damage and dimensions.

XI. []{#__RefHeading___Toc480965390 .anchor}Test Fluids

  ----------------- ------------------ ----------------- -----------------
  **Fluid**         **Test             **Interior        **Exterior
                    Temperature**      Duration**        Duration**

  Alcohol           Room Temp.         45 minutes        45 minutes
  ----------------- ------------------ ----------------- -----------------

### Humidity (3.5.11) 

Fiber optic cables samples shall be subjected to humidity per
MIL-STD-202 Method 103B Test Condition C. The specimen shall be weighed
before and within 15 minutes from the completion of the test to the
nearest 0.01gram. The cables shall not increase in mass more than 0.2%.
The samples shall be examined for degradation and the dimensions shall
be verified per section 4.10.7 after the sample is allowed to dry at
21°C to 25°C and 20% to 60% RH. The dimensions shall meet the
requirements in section 3.11 and the materials shall not visibly
degrade.

### Ambient light susceptibility (3.5.12)

A 4 meter length of fiber optic cable shall be tested per EIA/TIA RS 455
FOTP 22B. One end of the sample shall be terminated with a ST connector
and the other end shall be folded over on itself such that the fiber
breaks 15 cm from that end. The optical power meter shall be capable of
reading to --65 dBm. An integrating sphere shall be used.

### 

### 

### 

### 

### Mechanical requirement verification (3.6)

### Strippability (3.6.1)

#### Cable jacket strippability (3.6.1.1)

Cut the cable jacket 5 cm from a end. The circumferential cut shall be
preformed by an Ideal coax tool #45-162 with the cutting blade set to
cut through at least 80% of the jacket but not entirely through. The cut
shall be propagated by bending the cable around the cut. The 5 cm of
cable jacket shall be removable by hand without the aid of tools.

#### Cable buffer strippability (3.6.1.2)

The cable buffer shall be cut using Clauss NO-NIK with a cut diameter of
254 microns (0.010 inches). After the tool is removed the cut end of the
buffer tube shall be removable by hand without affecting the remaining
buffer tube or the fiber and its coating. This is verified during the
qualification sample preparation and during harness fabrication.

#### Fiber coating strippability (3.6.1.3)

Five fiber samples from random 30 centimeter lengths of cable shall be
removed and one end cleaned using a low non-volatile residue wipe and
alcohol. The fibers shall be installed into a connectors/
termini/ferrules measuring 172.7 microns to 175 microns. A drop of
Epotec 353ND epoxy shall be placed on the tip of each ferrule. The fiber
shall be moved a total of 2.5 millimeters in and out of the connector.
The excess epoxy shall be removed and the remaining epoxy shall be cured
at 100°C for 30 minutes. The excess fiber shall be cleaved and the
remaining materials shall be ground off the tip using 30 micron lapping
film. The termini shall be secured in a tensile test set and the fiber
pulled until failure.

### Dynamic tensile strength test (3.6.2.2)

Samples without the jacket, strength members, or buffers, shall be
conditioned at room 72 +/- 5F with a relative humidity of 65 +/- 5% for
24 hours. After completion of the conditioning, the samples will be
pulled to destruction with the strain rates specified in EIA/TIA 455
FOTP 28(C).

### Crush resistance verification (3.6.3)

Crush resistance shall be verified in accordance with EIA/TIA 455 FOTP
41 using the following conditions:

a\. The load shall be 22.6 Kilograms (50 lbs.) applied over a 6.25 mm
(0.25 in) length (in place of the 102 mm \[4 in\] length specified in
EIA/TIA-455-41).

b\. The load shall be applied for 60 seconds

c\. The load shall be applied and released in no less than 60 seconds
and no greater than 120 seconds.

d\. Visually inspect for damage at 10X magnification

The attenuation rate shall meet 3.4.3 when measured in accordance with
paragraph 4.8.3 while load is applied.

1.  Paragraph 4.3 4.8 and 5.1.6 of EIA/TIA-455-41 standard - The optical
    power shall be measured in accordance with 4.8.3 of this
    specification.

### Cycling flexing (3.6.5)

Test in accordance with DOD-STD-1678 METHOD 2010, procedure 2 with the
following specifications:

a\. The test mandrel shall be 12 mm (0.5 inches) in diameter.

a.  The test mass shall be 2.25 Kilograms (5 lbs.)

b.  Sample length shall be five meters.

The following exceptions shall take precedence over DOD-STD-1678
procedure 2:

Step 2 The specimen shall be mounted in the test fixture and the optical
power measured in accordance with 4.10.12.3.

Step 4 The test shall be conducted starting at room temperature, then
ramp to a temperature of 120°C when 900 to 1100 cycles are completed,
and then ramp down to room temperature when 1900 to 2000 cycles are
completed.

Step 5 The optical power shall be measured at the completion of the 2000
cycles while the specimen is mounted in the fixture in accordance with
4.8.3.

Para. 5.4 Optical power shall be measured in accordance with 4.8.3. The
number of transmitting fibers will not be counted.

Para. 5.6 The optical loss shall be calculated in accordance with
4.8.3.4.

Para. 5.8 Delete

Para. 5.9 Delete.

Para. 5.10 Visual inspection of the outer jacket shall be made under
ten-power magnification per 4.11.3.1.

### Cable weight (3.6.6)

Obtain a test sample that is 1 meter ± 1mm. Use a scale to determine the
weight of the sample in grams. Measure and report the weight to the
nearest 0.1 grams. That number will be the same as kilograms per
kilometer. The weight shall be determined in accordance with FED-STD-228
Method 8311 except the length of the cable sample shall be 2 ± 10 %
meters but measured to within 0.5 mm. The weight measurement shall be
accurate to 0.20 grams.

### Shock (3.6.7)

100 meters of fiber optic cable shall be coiled (approximate 30 cm (12
inches)) and securely mounted to the shock table using P clamps in four
approximately equally spaced locations. The terminated ends of the
cables shall be routed off the shock table and the optical test
equipment shall be isolated from the shock environment. The cable shall
be subjected to the shock pulses per MIL-STD-202 Method 213 Test
Condition A.

### Vibration (3.6.8)

100 meters of fiber optic cable shall be coiled (approximate 30 cm (12
inches)) and securely mounted to the vibration table using P clamps in
four approximately equally spaced locations. The terminated ends of the
cables shall be routed off the vibration table and the optical test
equipment shall be isolated from the vibration environment. The cable
shall be subjected to the shock pulses per MIL-STD-202 Method 204 Test
Condition C except only one sweep in each directions shall be performed
(a total of 2 sweeps) shall be performed and the resonance shall not be
obtained (therefore the resonance instrumentation is not required).

## Physical verifications 

### Test equipment

Dimensional and other measurement equipment (vernier calipers, rules,
comparitors, scales, etc.) shall be of sufficient accuracy to verify
dimensional and weight parameters specified in 3.0.

A microscope with a measuring video system capable of 400X, 200X and 50X
magnification.

Thermal shock chamber capable of operating over a temperature range of
--135°C to +220°C with a worst case temperature error/variation of
±2.5°C and a maximum time of 2 minutes to transition the test sample
between the high and low temperature set points.

### Test specimen

The test specimen shall be a sample from the reel of the product lot
being submitted for inspection. The length of the specimen for
acceptance and receiving inspection shall be sufficient to perform all
visual and mechanical examinations. Dimensional measurements shall be
made on at least two (2) samples \[minimum one (1) meter in length\],
one from the outside end of the product and one from the inside end of
the reel of product.

### Test procedures

#### Visual examination (3.7.5.1, 3.7.5.4, 3.7.5.4.1,3.7.5.4.3, 3.7.8)

The product shall be visually examined in accordance with the
requirements in EIA/TIA RS 455 FOTP 13 to assure that it meets the
specified requirements as to:

a\. Materials used (Material certifications to establish conformance to
material type requirements) and verification of data submitted relative
to lot number, etc.

b\. General design and construction

c\. Workmanship

d\. Finish

e\. Identification of product (marking)

f.  Damage

g.  Color per MIL-STD-104

#### Dimensional examination (3.7.1, 3.7.2, 3.7.3, 3.7.4, 3.7.5.2, 3.7.7)

Data sheets shall be furnished, to the procuring quality organization,
documenting the actual measurements of the dimensions specified in
paragraphs 3.7.1, 3.7.2, 3.7.3, 3.7.4, 3.7.7 and Figure A-1 of Appendix
A for each sample used for dimensional inspection for qualification and
quality conformance (acceptance) inspections.

#####  Fiber subassembly (3.7.1, 3.7.2, 3.7.3, 3.7.4 )

The fiber core, cladding and coating dimensions shall be verified
according to EIA/TIA RS 455 FOTP 45 with the following exceptions:

Para. 2.2 The microscope shall be equipped with video processing
equipment allowing measurements to ± 2 microns at 400X magnification.

Para. 4.3 The fiber coating shall not be removed from the fiber.

Para. 4.4 The fiber and coating shall be terminated in a connector and
polished to a flat surface which is within ± 2 degrees of perpendicular
to the fiber axis.

Para. 4.6 The fiber rotation shall be aligned so that the largest
measured diameter is horizontal. Use the video measurement system to
measure the width and height of fiber in this orientation. Rotate the
fiber to align smallest diameter horizontally and measure the width and
height using the video measurement system.

Para. 4.7 The video system will impose a measurement image on the
monitor and on the photographic image.

The following dimensions are to be verified:

a\. Core diameter

b\. Core ovality

c\. Cladding diameter

d\. Cladding ovality

e\. Core/Cladding offset

f\. Fiber coating diameter

g\. Fiber coating ovality

#####  Hermetic coating verification (3.11.1.3)

TBD -- Sandia Lab Test

#####  Cable buffer, strength member and jacket (3.7.5.5, 3.7.5.6)

The cable specimens shall be prepared for dimensional inspection by
cross-sectioning the cable and viewing it at 50 X. using a video
processor with a microscope in accordance with 4.9.13. The OD of each
cable component may be measured by stripping off outer jacket, trimming
strength member and stripping off buffer as required by the measurement
method used.

### Marking durability (3.7.10)

This test is to be performed only if markings are applied to the outer
jacket of the cable

a\. Immerse a 2 meter length of finished cable into a room temperature
solution of isopropyl alcohol, ACS reagent grade.

b\. Remove after 3 minutes of immersion.

c\. Wipe full length of sample with clean cotton cloth

d\. Repeat item c, for a total of three wipes

e\. Inspect for printed marking integrity. Reject the cable if any
symbolization has become

> illegible when viewed without magnification from a distance of
> approximately 0.5 meters.

### Cable jacket stability verification. (3.7.7)

Obtain a test sample that is approximately 1 meters in length. Measure
the actual length of the test sample to the nearest 0.025 millimeters.
Subject the sample to five thermal shock cycles in accordance with the
requirements in paragraph 4.9.13, then remove the sample from the
chamber. Flex the sample holding the coiled cable with two hands on
opposing sides of the cable and twisting one hand with respect to the
other (the rotational axis is the line formed by both hands through the
center of the coil). Then subject the sample to an additional five
thermal shock samples per 4.9.13. Remeasure the length of the cable
jacket to the nearest 0.025 millimeters Remove the cable jacket and
strength member as required, then measure the buffer length. Calculate
the percent of shrinkage.

###  {#section-102 .unnumbered}

### PREPARATION FOR DELIVERY

## Cleanliness

Extreme care shall be exercised during all packaging, packing, and
marking procedures such that the cable cleanliness integrity and the
packaging requirements of MSFC-SPEC-164 are not compromised.

## Packaging requirements

Unless otherwise specified in the contract, the requirements for
packaging of fiber optic cable shall be in accordance with MIL-C-12000.

### Reels and spools

The cable shall be spooled on ESD reducing plastic reels.

The cable on each reel or spool shall have both ends readily available
for testing without unwinding. A minimum of five meters of cable shall
be exposed on the inside end of the cable to facilitate attenuation
measurements and removal of the required mechanical and visual samples.
The inner end shall be available at the outer surface of the reeled
cable. Cable shall be spooled in such a way to minimize induced fiber
losses and special care shall be exercised to prevent excess stress on
the cable where it exits the reel on the inside end of spool. Both ends
of the cable shall be secured to a flange. The reel or spool shall have
an inner diameter greater than six (6) times the minimum bend radius of
the cable.

## Product and package marking

## Marking of reels and spools

In addition to the marking specified in MIL-STD-129, each reel or spool
shall be marked with the length of individual continuous lengths cable
wound thereon. A warning label shall be applied to each reel to advise
personnel to exercise caution in the handling of optical fibers. This
label shall alert personnel to avoid skin puncture and contact with the
eyes. It shall warn against staring at the output end of the fiber optic
cables without eye protection (infrared viewer or equivalent) during
testing when these cables are powered by high radiance light emitting
diodes or lasers.

The identification marking label shall contain the following
information:

SSQ Part number\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Length \_\_\_\_\_ meters

Manufacturers P/N and Rev.# \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Manufacture lot number \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Date of manufacture \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Supplier's name \_\_\_\_\_\_\_\_\_\_\_\_\_

### Space Station critical hardware

Each reel and spool shall be identified with a removable tag. The tag
shall be attached and removed in a manner such that the reel or spool
will not be damaged or contaminated or otherwise rendered unsuitable for
use. The tags shall be fluorescent international orange with black
letters on both sides and shall read as follows.

**CRITICAL SPACE STATION HARDWARE**

**DO NOT REMOVE UNTIL INSTALLATION**

The tag size shall be commensurate with the unit size and the lettering
size shall be legible to a person with normal sight at a distance of 3
feet.

### Packaging labels

Each unit, intermediate, and final package/container shall be affixed
with a self adhering label. The labels shall be fluorescent
international orange with black letters and shall read as follows.

**CRITICAL SPACE STATION HARDWARE**

**FOR USE IN MANNED SPACE FLIGHT.**

**MATERIALS, MANUFACTURING, AND WORKMANSHIP OF THE HIGHEST QUALITY
STANDARDS ARE ESSENTIAL TO ASTRONAUT SAFETY.**

The label size shall be commensurate with the package size and the
lettering size shall be legible to a person with normal eyesight at a
distance 3 feet and shall be logically applied to both sides of bags,
top and bottom or top and two sides, depending on box geometry, of small
boxes, and the top and at least 2 sides of the final container.

## Unit protection and wrapping

Unless otherwise specified, each deliverable unit shall, as a minimum,
be wrapped in an electrostatic free transportable polyethylene bag
conforming to MIL-B-81705, Type II. Bags shall be heat sealed or sealed
with a reusable sealing device manufactured from material conforming to
MS90376, material B. The sealing method shall eliminate spillage and
exclude particulate contaminates. Staples, tape or other static
generating materials, shall not be used. The same information required
by 5.4.1 for marking of reels and spools plus the date of packaging
shall be permanently and legibly marked (1) on a low sulfur content card
in and readable through the bag, (2) on the bag, or (3) a combination of
marking on a card and the bag.

## Unit packaging

Each bagged reel or spool unit shall be packaged in individual
containers (paper product boxes are acceptable) to insure damage free
delivery and storage. The information required by 5.4.1 and the date of
packaging shall be permanently and legibly marked on the container.

## Packing containers

Each packaged unit (Reference paragraph 5.2) shall be packed in
containers such that damage free delivery is assured. Containers shall
comply with the Consolidated Freight Classification rules or other
carrier regulations applicable to the mode of transportation. Each
packed container shall be prominently marked with the same information
required by 5.4.1 plus the quantity of reels or spools in the package
and the date of packaging.

# NOTES

## Part numbers

The specification custodian part number consists of the part numbers
shown in 6.2 and

appendix A.

Part Number Identification Table

**NFOC -2FFF -1GRP -1**

> **Number of Fibers**
>
> **Fiber Code**
>
> 1GRP = 100/140, Graded Index, Radiant Resistant, Precision Fiber
> Buffer
>
> **Cable Code**
>
> 2FFF = 2.0 mm OD, FEP Teflon Jacket, Fiberglass with Teflon
>
> Coating, FEP Secondary Buffer
>
> **Qualified For Flight**
>
> Cable Type -- NFOC -- NASA
>
> Fiber Optic Cable

## Approved source(s) of supply

Only the item described by this drawing when procured from the supplier
or an approved distributor is approved for use. A substitute item shall
not be used without the specification custodian's approval.
Identification of approved supplier is not to be construed as a
guarantee of present or continued availability as a source of supply.

  -------------------- ----------------------------------- ---------------
  Part Number          Approved Source of Supply           CAGE CODE

  NFOC-2FFF-1GRP-1                                         

  NFOC-2FFF-1GRP-1                                         
  -------------------- ----------------------------------- ---------------

# REQUIREMENTS VERIFICATION MATRIX

XII. []{#__RefHeading___Toc480965391 .anchor}Requirements Verification
     Matrix

  --------------- ----------------------------- ----- --------------- --- --- ---------------
  VERIFICATION                                        VERIFICATION            
  METHOD:                                             PHASES:                 

  TBS = TO BE                                                                 
  SUBMITTED BY                                                                
  SUPPLIER                                                                    

  A = ANALYSIS                                        D = DEVELOPMENT         

  S = SIMILARITY                                      Q =                     
                                                      QUALIFICATION           

  I = INSPECTION                                      A = ACCEPTANCE          

  D =                                                                         
  DEMONSTRATION                                                               

  T = OPERATIONAL                                                             
  TEST                                                                        

  N/A = NOT                                                                   
  APPLICABLE                                                                  

  TBS = TO BE                                                                 
  SUPPLIED BY                                                                 
  CABLE SUPPLIER                                                              

  SECTION 3       PARAGRAPH                           D               Q   A   SECTION 4

  PARAGRAPH       TITLE                                                       PARAGRAPH

  3.3.3           FUNGUS - DELETED              N/A                           

  3.3.3           OFFGASSING/TOXICITY - DELETED N/A                           

  3.3.3.1         OUTGASSING/TOXICITY - DELETED N/A                           

  3.3.3.2         ODOR - DELETED                N/A                           

  3.3.3.3         FLAMMABILITY - DELETED        N/A                           

  3.3.3.4         OUTGASSING (VACUUM            N/A                           
                  STABILITY) - DELETED                                        

  3.3.4           ATOMIC OXYGEN - DELETED       N/A                           

  3.4             DESIGN AND CONSTRUCTION -     N/A                           
                  DELETED                                                     

  3.4.1           OPTICAL FIBER -- DELETED      N/A                           

  3.4.1.1         OPTICAL FIBER BUFFER          N/A                           
                  --DELETED                                                   

  3.4.2           CABLE -- DELETED              N/A                           

  3.4.2.1         STRENGTH MEMBER -- DELETED    N/A                           

  3.4.2.2         CABLE JACKET -- DELETED       N/A                           

  3.4.2.3         COLOR -- DELETED              N/A                           

  3.4.2.4         LENGTHS AND SLICES -- DELETED N/A                           

  3.4.2.5         CABLE WEIGHT -- DELETED       N/A                           

  3.5             PHYSICAL -- DELETED           N/A                           

  3.5.1           FIBER -- DELETED              N/A                           

  3.5.1.1         NUMBERICAL APERTURE           N/A                           

  3.5.1.2         OPTICAL FIBER BANDWIDTH --    N/A                           
                  DELETED                                                     

  3.5.2           CABLE                         N/A                           

  3.5.2.1         ATTENUATION RATE -- DELETED   N/A                           

  3.5.2.2         ATTENUATION MEASUREMENTS --   N/A                           
                  DELETED                                                     

  3.5.2.2.1       INDUCED ATTENUATION --        N/A                           
                  DELETED                                                     

  3.5.2.2.2       SUBSTITUTION LOSS -- DELETED  N/A                           
  --------------- ----------------------------- ----- --------------- --- --- ---------------

**Table XII-- Requirements Verification Matrix (continued)**

  ------------ ---------------------------- ----- --- --- --- --------------------
  3.5.3        RADIATION RESISTANCE --      N/A               
               DELETED                                        

  3.5.4        THERMAL SHOCK -- DELETED     N/A               

  3.5.5        SURVIVAL TEMPERATURE --      N/A               
               DELETED                                        

  3.5.6        CRUSH                        N/A               

  3.5.7        CABLE BEND                   N/A               

  3.5.8        JACKET SHRINKAGE             N/A               

  3.5.9        VACUUM                       N/A               

  3.6          IDENTIFICATION MARKING       I     X   X   X   4.10.7

  3.6.1        DURABILITY OF IDENTIFICATION N/A               
               -- DELETED                                     

  3.7          WORKMANSHIP                  I     X   X   X   4.10.7

  3.8          OPTICAL                      N/A               

  3.8.1        NUMERICAL APERTURE           TBS   X   X   X   EIA/TIA 455 FOTP 47

  3.8.2        OPTICAL FIBER BANDWIDTH      TBS   X   X   X   EIA/TIA 455 FOTP 30

  3.8.3        ATTENUATION                  TBS   X   X   X   4.10.12

  3.8.3.1      SUBSTITUTION LOSS            T     X   X       4.10.12.4

  3.8.3.2      INDUCED LOSS                 T     X   X       4.10.12.3

  3.9          ENVIRONMENTAL                                  

  3.9.1        FUNGUS                       T     X   X       MIL-STD-810 Method
                                                              508

  3.9.2        TOXICITY                     T     X   X       MIL-STD-810 METHOD
                                                              508

  3.9.3        ODOR                         T     X   X       NHB 8060.1B

  3.9.4        FLAMMABILITY                 T     X   X       MSFC-HDBK-527

  3.9.5        OUTGASSED PRODUCTS/ VACUUM   T     X   X       JSC-SPEC-SP-R-0022
               STABILITY                                      

  3.9.6        RADIATION RESISTANCE                   X       

  3.9.7        THEMAL SHOCK                 D     X   X       MIL-STD-202 Method
                                                              107

  3.9.8        SURVIVAL TEMPERATURE         D     X   X       

  3.10         MECHANICAL                                     

  3.10.1       STRIPPABILITY                      X   X   X   VERIFIED DURING USE

  3.10.1.1     CABLE BUFFER STRIPPABIILITY  D     X   X       VERIFIED DURING USE

  3.10.1.2     FIBER BUFFER STRIPPIBILITY   D     X   X       

  3.10.1.3     CABLE JACKET STRIPPABILITY   D     X   X       VERIFIED DURING USE
  ------------ ---------------------------- ----- --- --- --- --------------------

**Table XII -- Requirements Verification Matrix (continued)**

  ------------ ---------------------------- ----- --- --- --- ---------------
  3.10.2       FIBER PROOF TEST             TBS   X   X   X   

  3.10.3       CYCLIC FLEXING               D     X   X       4.10.20

  3.10.4       CRUSH                        D     X   X       EIA/TIA-455
                                                              FOTP 41

  3.10.5       CABLE BEND                   D     X   X       

  3.10.6       CABLE WEIGHT                 TBS   X   X   X   

  3.11         PHYSICAL                                       

  3.11.1       FIBER AND FIBER BUFFER                         4.10.7

  3.11.1.1     FIBER CORE                   TBS   X   X   X   4.10.7.4.3

  3.11.1.2     FIBER CLAD                   TBS   X   X   X   4.10.7.4.3

  3.11.1.3     FIBER COATING DIAMTER        TBS   X   X   X   4.10.7.4.3

  3.11.2       CABLE                                          

  3.11.2.1     CABLE BUFFER                 TBS   X   X   X   4.10.7

  3.11.2.2     CABLE STRENGTH MEMBER        TBS   X   X   X   4.10.7

  3.11.2.3     CABLE JACKET                 TBS   X   X   X   4.10.7

  3.11.2.3.1   CABLE JACKET OUTSIDE         TBS   X   X   X   4.10.7
               DIAMETER                                       

  3.11.2.3.2   CABLE JACKET STABILITY       D     X   X   X   

  3.11.2.4     CABLE JACKET COLOR           D     X       X   MIL-STD-104

  3.11.2.5     LENGTHS AND SPLICES          TBS           X   EIA/TIA-455
                                                              FOTP 60 & 61
  ------------ ---------------------------- ----- --- --- --- ---------------

**APPENDIX A ITEM DETAIL SPECIFICATION**

**SPECIFICATION CUSTODIAN:**

> **THE BOEING COMPANY**
>
> **SPACE** **AND COMMUNICATIONS DIVISION**
>
> **2100 SPACE PARK DRIVE**
>
> **HOUSTON TEXAS, 77058**
>
> **CAGE CODE: 2B945**

+-----------------------------------------------------------------------+
| **INTERNATIONAL SPACE STATION PROGRAM OFFICE**                        |
|                                                                       |
| **SSQ 21657 Revision N/C**                                            |
|                                                                       |
| **National Aeronautics and Space Administration**                     |
|                                                                       |
| **International Space Station Program**                               |
|                                                                       |
| **Johnson Space Center, Houston, Texas**                              |
|                                                                       |
| ![](media/image2.png){width="1.7097222222222221in"                    |
| height="1.3770833333333334in"}                                        |
+-----------------------------------------------------------------------+

**10.0 SCOPE**

This appendix defines the detail dimensional, material and performance
requirements for a single element, multimode, fiber optic cable for use
in near earth orbit and internal and external installations.

**20.0 Applicable documents**

None.

**30.0 Requirements**

**30.1 Fiber characteristics**

Attenuation (Cabled) -

Numerical Aperture

Bandwidth -

Proof Strength -

Core Ovality

Cladding Ovality

Core/Cladding Offset

Cable Weight -

Color -

Temperature: Operating

Storage

**30.2 Physical dimensions and materials**

The physical dimensions and materials for the cable are defined in Table
A-I and

Figure A-I. Dimensions are SI metric.

**Table A-1, FIBER/CABLE DIMENSIONS**

+-----+----------------+---------------+---------------+--------------+
| F   | Item           | Dimension     | Material      | Construction |
| ind |                |               |               |              |
+-----+----------------+---------------+---------------+--------------+
| A   | Core           | 100[+]{.      | Doped Silica  | Drawn        |
|     |                | underline}2um |               |              |
| B   | Cladding       |               |               |              |
|     |                | [+]{.         |               |              |
|     |                | underline}2um |               |              |
+-----+----------------+---------------+---------------+--------------+
| C   |                |               |               |              |
+-----+----------------+---------------+---------------+--------------+
| D   | Fiber Coating  | 170[+]{.      |               | Coat with    |
|     | Buffer         | underline}2um |               | Heat Cure    |
+-----+----------------+---------------+---------------+--------------+
| E   | Cable Buffer   | OD - 785 um   |               | Extruded     |
|     |                | max           |               |              |
+-----+----------------+---------------+---------------+--------------+
| F   | Strength       |               |               | Braided      |
|     | Member         |               |               |              |
+-----+----------------+---------------+---------------+--------------+
| G   | Cable Jacket   | OD -          |               | Extruded     |
|     |                | 2.10[+]{.und  |               |              |
|     |                | erline}0.05mm |               |              |
+-----+----------------+---------------+---------------+--------------+

**40.0 Quality assurance provisions**

The requirements of SSQ 21654 4.0 apply.

**50.0 Packaging**

Packaging of product produced to the requirements of this appendix shall
be packaged in accordance with 5.0 of this specification.

**60.0 Notes**

The optical cable contains about 0.2% excess fiber when it is removed
from the shipping reel. The excess fiber shall be removed prior to
terminating the ends as follow:

Short Lengths (Less than 2 meters)

1.  Cut the cable to the required length. Add the length required to
    terminate the ends.

2.  After removing the cable jacket, strength member, and buffer tube,
    lay the length of cable so that it is straight and on a flat table.

3.  Move the fiber in and out of the cable and verify that the fiber is
    free to move through the cable.

4.  Clean the fiber and replace the fiber in its original position with
    respect to the optical cable jacket.

G F E D A, B and C

**Figure A-1. Cable Configuration**

Long Lengths (Greater than 2 meters)

1\. Cut the cable 2 inches longer than required. Add the length required
to terminate the ends.

2\. Stretch the cable out on a table so that it lays straight and flat.

3\. Remove one inch of cable jacket, strength member and cable buffer
tube from each end.

4\. Grab the fiber from one end and lift the fiber and approximately
half the cable off the table.

5\. If the fiber moves at the other end, set the cable down. If the
fiber does not move, repeat

the step above on the other cable end.

6\. Cut off the excess fiber at each cable end.