Standards Activities - FIA · - ISO/IEC 11801 (or BS EN 50173-2); - ISO/IEC 24702 (or BS EN...
Transcript of Standards Activities - FIA · - ISO/IEC 11801 (or BS EN 50173-2); - ISO/IEC 24702 (or BS EN...
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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FIAin association with
Testing - The Final SolutionTesting - The Final Solution
Mike Gilmore
Managing Directore-Ready Building Limited
Mobile: +44 (0) 7860 110563
FIA e-mail: [email protected]
e-mail: mike.gilmore
@e-readybuilding.com
Standards Activities
MemberJTC1 SC25 WG3: Generic Cabling
Ex-convenor JTC1 SC25 WG3 CITG: Cabling Implementation Task Group
JTC1 SC25 WG3 IPTG: Industrial Premises (Cabling) Task Group
Convenor TC215 WG1: Cabling design
Secretary TC215 WG2: Cabling installation - QA and installation practices
Member TC215 WG3: Facilities and infrastructures
Past-ChairmanTCT7: Telecommunications - Installation Requirements
Chairman TCT7/-/1: Cabling: Infrastructure design, planning and commissioning
Secretary TCT7/-/2: Cabling; Installation and UK implementation
TCT7/-/3: Facilities and infrastructures
Technical and Standards DirectorFibreoptic Industry Association
FIAwww.fia-online.co.uk
DirectorTelecommunications Infrastructure Advisory Board
Leader - Special Task Force 439Global KPIs for energy efficiency of deployed broadband
www.tiab-online.co.uk
Member - CEN/CLC/ETSI CGGreen Data Centre - Coordination Group
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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FIA Shortform GuidanceTesting - The Final Solution
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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Further ClarificationTesting - The Final Solution
YOUR SUPPLY CONTRACT
IS THE FINAL ARBITER
If the customer has accuratelyspecified his requirements - then these
shall be applied
If not then try to apply the FIAapproach
If a “cabling system” supplier hasdefined a test solution
as a basis of some form of warranty-
and the customer accepts this-
then this solution shall be applied
Recognising that:• repeatability may be affected• the results may not map to those of astandards-based testing approach
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
2012
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FIAin association with
Standards for Attenuation TestingTesting - The Final Solution
[BS EN] IEC 61280-4-1:2009 Installed cable plant - Multimode attenuation measurement
[BS EN] IEC 61280-4-2:2000 Fibre optic cable plant - Single-mode fibre optic cable plant attenuation
Future IEC 61280-4-2:2012Installed cable plant - Single-mode attenuation and optical return loss
measurement
Fibre optic communication subsystem test procedures
ISO/IEC 14763-3 Ed.1.1:2011including Technical Corrigendum 1
Information technology - Implementation and operation of customer premisescabling - Testing of optical fibre cabling
OBJECTIVES
a single method of testing which could be applied to both adapter-to-adapter and toplug-to-plug configurations of generic cabling in accordance with the followingstandards:- ISO/IEC 11801 (or BS EN 50173-2);- ISO/IEC 24702 (or BS EN 50173-3);- ISO/IEC 24764 (or BS EN 50173-5);
a launch condition to be used when undertaking the testing of multimode opticalfibre cabling;
the appropriate use of reference grade connectors on test cords to reducemeasurement spread - together with an associated amendment of test limits.
1
2
3
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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Standards Comparison
Multimode launch conditions
ISO/IEC 14763-3 [BS EN] IEC 61280-4
-1: Multimode -2: SinglemodeMultimode and
singlemode
Encircled flux
Singlemode launch conditions Not applicable
Optional OptionalMandatoryRG terminations/connectors
LSPM Normalisation (referencing)
Lin
k
1-cord reference
2-cord reference
3-cord reference
NOPreferred
(adapter-adapter)
Plug-to-plugand
adapter-adapter(where necessary)
NO
Adapter-adapteronly
Plug-to-plugonly
ONLY
Adapter-plugonly
Ch
ann
el
3-cord reference ONLY
Testing - The Final Solution
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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FIAin association with
Multimode launch conditions
ISO/IEC 14763-3 [BS EN] IEC 61280-4
-1: Multimode -2: SinglemodeMultimode and
singlemode
Encircled flux
Singlemode launch conditions Not applicable
Optional OptionalMandatoryRG terminations/connectors
LSPM Normalisation (referencing)
Lin
k
1-cord reference
2-cord reference
3-cord reference
NOPreferred
(adapter-adapter)
Plug-to-plugand
adapter-adapter(where necessary)
NO
Adapter-adapteronly
Plug-to-plugonly
ONLY
Adapter-plugonly
Ch
ann
el
3-cord reference ONLY
Standards ComparisonTesting - The Final Solution
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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Why Not ISO/IEC 14763-3?Testing - The Final Solution
The FIA does not support the directapplication of ISO/IEC 14763-3 for
the following reasons:
the work of the FIA Project Team investigating the specification andprocurement of reference grade terminations found that there was nostraightforward method by which test cords with reference grade terminationscould be purchased that could be universally applied to all connector styles(this is documented in FIA-TSD-2000-4-2-3);NOTE: for example, SC connectors had few problems but LC connectors did not lendthemselves to the same approach
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2if reference grade terminations are not universally available it is not practical,or even possible, to apply a standard that universally requires their use
3different connection combinations produce different limitsi.e RGT-RGT, RGT-normal, normal-normal
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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Why Not ISO/IEC 14763-3?Testing - The Final Solution
It is not in the interest of the FIA to encourage installers or their customers to actin a way that risks the reputation of the FIA or the installer
and it is certainly not in the interests of the FIA to encourage practices that couldresult in financial penalty for any of those involved.
there is a clear and present risk for installers that tightened limits that assumethe use of reference grade terminations on the test cords will be breached if,for whatever the reason, the performance of the test cord terminations fails tomeet the specified values for reference grade terminations
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although a single test method is very attractive, its use on typical “adapter-to-adapter” cabling configurations results in a clear and present risk of obtaining“negative” attenuation results, the probability of which is increased for veryshort links in which there is little or no cable attenuation2
while these “negative” values are entirely predictable, they are difficult tojustify to customers
MOST FIA MEMBERS ARE INVOLVED IN INSTALLATION OF CABLING WHERETHE CABLE ATTENUATION IS LOW
Short link MMF SMF
CONNECTION LOSSES DOMINATE MEASURED RESULTS
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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Test Equipment Likes ISO/IEC 14763-3Testing - The Final Solution
Attenuation 0,1 dB
Attenuation 0,3 dB
RGT-normal
Normal-normal
RGT-RGT
Attenuation0,1 dB 0,3 dB 0,75 dB
Pop
ulatio
n
Attenuation 0,2 dB
Attenuation 0,5 dB
RGT-normal
Normal-normal
RGT-RGT
Attenuation0,2 dB 0,5 dB 0,75 dB
Pop
ulatio
n
MULTIMODE
SINGLEMODE
ISO/IEC 14763-3 provides simplest approach (from the test equipment perspective)
ISO/IEC 14763-3 provides limits for components, links and channels
PASS/FAIL criteria can be “programmed in”
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
2012
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MMF
RGTs and LSPM: The ProsTesting - The Final Solution
Installed cable
PM
Tail cordLaunch cord
DLS S
“BASIC” ADAPTER-ADAPTER TEST CONFIGURATION
P1
A B
LIMIT/RESULT SPREADwith “reference grade”
test system components
LIMIT/RESULT SPREADwith “normal”
test system components
0.6 dB
1.5 dB
LIMIT/RESULT SPREADwith “reference grade”
test system components
LIMIT/RESULT SPREADwith “normal”
test system components
0.6 dB0.4 dB-0.2 dB
1.5 dB-1.5 dB 0 dB
Installed cable attenuation
Attenuation A-B
1-cord Referencing
3-cord Referencing
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
2012
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RGTs and LSPM: The ConsTesting - The Final Solution
LSPM (MMF)
3-cord Referencing Limit1-cord Referencing Limit 0,3 + 2 x 0,75 + 0,3 + cable (dB)
(0,3-0,1) + 2 x 0,75 + (0,3-0,1) + cable (dB)
OTDR (MMF)
RGT-normal (0,3 dB max)
Normal - RGT (0,3 dB max)Normal - Normal(0,75 dB max)
MORE COMPLEX IMPLEMENTATIONS
MORE COMPLEX TEST LIMIT DEMANDS
© 2012 Fibreoptic Industry Associationwww.fia-online.co.uk
The Manor House, BUNTINGFORD, Hertfordshire, SG9 9AB, United Kingdom Tel: +44 (0)1763 273039 Fax: +44 (0)1763 273255
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SummaryTesting - The Final Solution
TAKE CARE OF YOUR TEST CORDS - AND THEY WILL TAKE CARE OF YOU