User are respo sible f or it cor ect ap lcatio... .1 Bibl ography... The resist or t erminat ion netw ork s al prov ide t he diferent ial mode an t he common mode referen e t erminat ion
Trang 1Communication cables —
Trang 2T his British Stan ard is th UK impleme tatio of EN
5028 -1-8:2017 It su er e es BS EN 5028 -1-8:20 1 which
is with raw n
T he UK par icipatio in it pre aration w as e t us e to T ech ical
Commit e EPL/4 , Cables, w ires an wav eg ides, radio fre u ncy
co n ctor an ac es ories for commu icatio an sig al n
A l s of organiz tio s re rese te o this commit e can b
o tain d o re u s to it secretary
T his p bl catio d es n t p rpor to inclu e al the n ces ary
prov isio s of a co t act User are respo sible f or it cor ect
ap lcatio
© T he British Standards Ins itutio 2017
P bl sh d by BSI Stan ards Limite 2017
ISBN 978 0 58 9 3 7 5
ICS 3 120.20
C mpla ce w it h a British Sta d rd ca not conf er immu ity f rom
le al o lg tions
T his British Stan ard w as p blsh d u der th auth rity of th
Stan ards P lcy an St ate y Commit e o 31 March 2017
A me dme t s/ or ig nd is u d since publ cation
Trang 3EUROPÄISCHE NORM
Marc 2 17
En ls V ersion
Communicat ion c ables - Spec ific ations for t est met hods - Part 1
-8: Elec t rical t est met hods - At t enuat ion
Câ le d c mmu ic t io - Sp cific t io s d s mét ho e
d'e s i Part ie 1 8: Méth d s d e s is éle triq e -
Affaibls eme t
K ommu ik tio sk ab l - Sp zifik atio e für Prüfvera re
Tei 1 8:Elek t ris h Prüfvera re - Dämpfu g
This Euro e n Sta d rd wa a prov ed b CENELEC o 2 16- 2- 6 CENELEC memb rs are b u d to c mply with th CEN/ CENELEC
Intern l R eg lat io s whic st ip late th c n itio s for giv in this Euro e n Sta d rd th st at us of a n tio al sta d rd with ut a y alt eratio
Up-t o-d t e lsts a d biblo ra hic l refere c s c n ernin s c n t io al st an ard ma b o t ain d o a plc t io t o th CEN-CENELEC
Ma a eme t Ce tre or t o a y CENELEC memb r
This Euro e n Sta d rd e ist s in thre oficial v ersio s (En ls , Fre c , Germa ) A v ersio in a y ther la g a e ma e b t ra slatio
u d r t he re p n ibi ty f a CENELEC memb r int o its own la g a e a d n t ifie t o t he CEN-CENELEC Ma a eme t Ce tre h s th
s me st at us a t he oficial v ersio s
CENELEC memb rs are th n tio al elec trote h ic l c mmit te s of Aust ria, Belgium, Bulg ria, Cro t ia, Cypru , th Cz c R ep blc,
De mark, Esto ia, Finla d, Former Yu o la R ep blc f Ma e o ia, Fra c , Germa y , Gre c ,Hu g ry , Ic la d,Irela d, It aly,L t v ia,
Lit hu nia, L x mb urg,Malta,t he Net herla d , Norway , Pola d, Port ug l R oma ia, Serbia,Slov akia,Slov enia, Sp in,Swe e ,
Swit zerla d, Turk y n t he Unit ed K in d m
Europea n Commit tee for Ele t rotechnica l Sta nd a rd iza tio
Comité Europé n d e Norma lisa tio Ele trotech niq ue
Europä isches Komitee für Elektrote h nische Nor mu ng
Trang 4Content s Pa e
Euro e n foreword 3
1 Scope 4
2 Norma v refere c s 4
3 Terms a d d finitions 4
4 Te t method for att enu tion 5
4.1 Met hod A: Balu - ba e te t method for s mmetric l c ble 5
4.1.1 Te t e uipme t 5
4.1.2 Te t s mple 5
4.1.3 Cal brat ion proc d re 5
4.1.4 Me s rin proc d re 5
4.2 Met hod B: Balu -le s te t met hod for symmetric l c ble 6
4.2.1 Te t e uipme t 6
4.2.2 Te t s mple 7
4.2.3 Cal brat ion proc d re 7
4.2.4 Me s rin proc d re 7
4.3 Met hod C: Te t met hod for coa ial c ble 8
4.3.1 Te t e uipme t 8
4.3.2 Te t s mple 9
4.3.3 Cal brat ion proc d re 9
4.3.4 Me s rin proc d re 9
4.4 Met hod D: Ope /short method 9
4.4.1 Te t e uipme t 9
4.4.2 Te t s mple 9
4.4.3 Cal brat ion proc d re 9
4.4.4 Me s rin proc d re 10 5 Ex pre sion of t est re ults 10 5.1 Ex pre sion 10 5.2 Temperat ure core tion 1
6 Te t report 1
Bibl ography 12
Trang 5European foreword
This doc ment EN 5 2 9-1-8:2 17] has b en pre ared by CLC/TC 4 X "Commu ication ca les"
The folowin dat es are fix ed:
• lat est date by whic this doc ment has t o b
implement ed at national lev el by publcat ion of an
ident ical nat ional st an ard or by en orsement
(do ) 2 17-0 -16
• lat est date by whic the national st an ar ds conflct in
w it h t his doc ment hav e to b w it hdrawn
(dow) 2 19-12-16
This doc ment s p rsedes EN 5 2 9-1-8:2 01
At t ent ion is draw n to t he p s ibi ty that some of t he element s of t his doc ment may b t he s bject of p t ent
rig t s CENELEC s al not b held resp n ible for ident ifyin an or al s c p t ent rig t s
EN 5 2 9-1, C ommunicatio n cable — Sp cificatio s for tes t meth ds , is c rent ly comp sed with t he
folow in p rt s:
— Part 1- 1: Electrical tes t meth ds — Ge eral re uireme ts;
— Part 1- 2 : Electrical tes t meth ds — D C res is ta ce;
— Part 1- 3 : Electrical tes t meth ds — D ielectric s tre gth;
— Part 1- 4: Electrical tes t meth ds — Ins ulatio resis ta ce;
— Part 1- 5: Electrical tes t meth ds — Ca acita ce;
— Part 1- 6: Electrical tes t metho ds — Electroma n tic p rorma c e;
— Part 1- 7: Electrical tes t metho ds — Velo city o fpro ag atio ;
— Part 1- 8: Electrical tes t metho ds — Ate u atio ;
— Part 1- 9 : Electrical tes t meth ds — Un ala ce ate uatio n (lo g itudin l con ers io los s , lo ngitudin l
con ers io n tra s fer lo s s );
— Part 1-10: Electrical tes t meth ds — Cros s talk;
— Part 1-11: Electrical tes t meth ds — Ch racteris tic imp da ce, in ut imp da ce, return los s ;
— Part 1- 12: Electrical tes t meth ds — Inducta ce;
— Part 1- 13: Electrical tes t meth ds — Cou pln ate uatio n or s cre nin ate u tio of p tch co rds /
coa ial cable as s emble / pre- con ectoris ed cables ;
— Part 1-14: Electrical tes t meth ds — Coupln ate u tio or s cre nin ate u tio of co nn ctin
h rdware;
— Part 1- 15: Electro ma n tic p rorma ce — Cou ln ate u atio of ln s a d cha n ls (L bo rato ry
conditio s );
— Part 1- 16: Electroma n tic p rorma ce — Cou pln ate u atio ofcable as s emble (Field conditio ns );
— Part 1- 17: Electrical tes t meth ds — Ex g n u Cross talk ExNEXTa d ExFEXT
Trang 61 Scope
This Euro e n Stan ard det ais t he t est met hod t o determine at t en at ion of finis ed ca les u ed in analog e
an digit al commu icat ion s stems
It is b u d t o b re d in conju ct ion wit h EN 5 2 9-1-1, whic contain es ential provision for it s a plcat ion
The folowin doc ment s, in w hole or in p rt , ar e normat iv ely referen ed in this doc ment an are
in isp n a le for it s a plcat ion F r dat ed referen es, only the edit ion cited a ples F r u dat ed referen es,
t he lat est edit ion of t he referen ed doc ment in lu in an amen ment s) a ples
EN 5 2 9-1-1, C ommunicatio cable - Sp cificatio s for tes t meth ds - Part 1-1: Electrical tes t meth ds -
Ge eral req u ireme ts
EN 5 2 9-1-1 , Commu icatio cable - Specificatio s for tes t meth ds - Part 1- 11: Electrical tes t meth ds -
Ch racteris tic imp da ce, in ut imp da ce, return loss
EN 5 2 0-1-2, C ommu icatio cable - Part 1- 2: Definitio ns
3 Terms and definit ions
F r t he purp ses of t his doc men t he t erms an definition giv en in EN 5 2 9-1-1 an EN 5 2 0-1-2 an
t he folow in a ply
3.1
c ble at te ua on
decre se in mag itu e of p wer of a sig al t hat pro agat es alon the ca le
3.2
ins rt ion los (IL) of a n twork (e.g c ble or c ble a s mbly )
rat io of p w er P
1
delv ered to a sp cified lo d in a t ran mis ion s st em, b fore in ertion of t he giv en network,
t o t he p w er P
2 delvered to the same lo d aft er in ertion of t he netw ork:
P
IL
P
1
2
Not e 1 to e t ry : T he insert io los of a n t work d p n s o t he n t work it self as wel as t he t ra smis io sy st em in
whic it is insert ed (in lu in the lo d) T he insert io los is g n raly e pres e in d cib ls
Not e 2 to e t ry : In a t ra smis io sy st em wh re t he lo d a d so rc e imp d n es are e u l, t he insert io los c n b
e pres e b t he sc tt erin p rameter S
21
21
(2)
Not e 3 to e t ry : For a c ble whic is match d t o t he t ra smis io sy stem in whic it is insert ed, t he insert io los is
e uivale t to t he c ble at t en at io
Not e 4 to e t ry : Furt her informatio o d finit io s of at t en atio c n b fo n in IEC/ T R 6 15
Trang 74 Test met hod for at t enuat ion
4.1 Method A: Balun- base test method for symmetric l c bles
4.1.1 Te t e uipme t
The t est eq ipment con ists of a v ect or network analyser (V NA) havin at le st 2 p rt s, an t he folowin :
— S-p ramet er set -up (s al b ca a le of p rormin S
21
me s rement s)
— Balu s t o conv ert t he u b lan ed sig al of t he V NA t o a b lan ed sig al The b lu s s al hav e an
imp dan e on t he primar y (u b lan ed) side eq al t o t he nominal imp dan e of t he me s rin devices
(in general 5 Ω) an on t he secon ary (b lan ed) side eq al t o the nominal imp dan e of t he ca le
u der t est CUT) (e.g 10 Ω) The b lu s s al fulfi t he req irement s of Clas A b lu s as des rib d in
EN 5 2 9-1-1
— Calbration artefact s t o p rorm t he req ired calbrat ion of t he t est eq ipment on t he secon ary side of t he
b lu s To p rorm a ful 2-p rt calbrat ion a s ort circ it , an o en circ it , a referen e lo d, an a s ort
con ect ion ca le or simiar, are req ired The s ort circ uit s al have neglgible in u t an e an the o en
circ it s al hav e neglgible ca acit an e The lo d resist or s al hav e a v alue close (within 1%) t o the
nominal imp dan e of t he CUT (e.g 10 Ω) an w it h neglgible in u tan e an ca acit an e The
con ect ion ca le s al b as s ort as p s ible an wel mat ched t o t he nominal imp dan e
— R esist or t erminat ion network (R TN) for t erminat ion of inact iv e p irs The resist or t erminat ion netw ork
s al prov ide t he diferent ial mode an t he common mode referen e t erminat ion imp dan es It is
recommen ed t o u e resist or t erminat ion netw ork in ac ordan e w it h An ex C of EN 5 2 9-1-1
Balu s may b u ed for terminat ion of t he inactive p irs if t hey provide t he sp cified diferent ial an
common mode t erminat ion
As an alternative t o a network analy er, a generator an vect or v olt met er may b u ed
Acc rac of t est set -up s al b b t t er than 1 %
4.1.2 Te t s mple
The CUT s al have a minimum len t h as sp cified in t he relev ant sect ional sp cificat ion Bot h en s of t he
CUT s al b pre ared, s c t hat w hen con ect ed to t he t erminals of t he t est eq ipment t he influen e to t he
t est res lt is minimized The twistin of t he p irs/quad s al b maint ained
4.1.3 Calbrat ion proc dure
It is not t he int ent of t he st an ar d t o det ai the algorithms a pled by a V NA t o corect t he me s red res lt s
b sed on a calbration proced re but o det ai t he calbrat ion proced re Furt her informat ion may b o t ained
in the man als of t he VNA s p ler
The calbrat ion s al b p rormed on t he secon ar y side of t he b lu s A ful two-p rt calbration is
recommen ed u in o en, s ort , an lo d calbrat ion art efact s at the terminals of t he b lu , an a s ort
con ect ion ca le b tween the tw o b lu s for t he t hrou h calbrat ion
4.1.4 Me s rin proc d re
The CUT s al b con ected t o t he terminals of t he t est eq ipment as de ict ed in Fig re , in lu in pro er
t erminat ion of t he active p irs, t he inact iv e p irs, an t he s re n
The con ect ion of t he CUT t o t he test p rt s s al b o timiz ed, s c t hat t he mismat ch at t he con ect ion is
minimized F r the inactive p irs, it is recommen ed t o a ply r esist or t erminat ion netw ork as referen ed in
4.1.1
Trang 8Figure 1 — At te u t ion me s reme t u ing balu s
The s at t erin p ramet er S
21
s al b me s red ov er t he whole sp cified feq en y ran e an at he same
feq en y p int s as for t he calbr at ion proced re A ll p irs/quad of t he CUT s al b me s red
Un er mat ched con ition , t he at t en ation a of t he CUT is giv en by:
)
(3)
4.2 Method B: Balun-les t est method for symmetric l c bles
4.2.1 Te t e uipme t
Met hod B is t he prefered one for b lan ed ca les for feq en ies a ov e 1 0 0 MHz as it avoid t he u e of
b lu s whic are oft en lmit ed t o 1 0 0 MHz Wit h t his config ration it is p s ible t o me s re b t h the
diferent ial mode an t he common mode at t en at ion of t he ca le
Ple se refer t o EN 5 2 9-1-1 for a general des ription of t he b lu -les t est met hod an nomen lat ure
The t est eq ipment con ist s of a mult ip rt v ect or net w ork analy er V NA havin at le st 4 p rt s, an t he
folowin :
— S-p ramet er set -up
— A mat hemat ical conv ersion fom u b lan ed t o b lan ed, i.e the mix ed mode set -up whic is oft en
refered t o as an u b lan ed, modal decomp sit ion or b lu -les set up This alows me s rement s of
b lan ed devices w it hout u e of an R F b lu in t he sig al p th Wit h s c a t est set-up, al b lan ed an
u b lan ed p ramet ers can b me s red ov er t he ful feq en y ran e
— Co x ial intercon ect ion ca les in ac ordan e w it h t he relevant clau e of EN 5 2 9-1-1 t o con ect the
V NA , sw it chin mat rix (if u ed), an t he t est fix t ure The con ect ion ca les s al hav e c aract eristic
imp dan e eq al t o t he nominal imp dan e of t he VNA, an a low t ran fer imp dan e
Trang 9— Co x ial calbration st an ar ds for calbration at t he en of t he co x ial int ercon ect ion ca les (if a pled).
To p rorm a calbrat ion at t he en of t he co x ial int ercon ect ion ca le co x ial referen e st an ard , so
caled calbration st an ard , i.e a s ort circ it , an o en circ it an a referen e lo d, are r eq ired An
alt ernat ive t o t he b fore ment ioned o en, s ort an lo d referen es is t he u e of an elect ronic mult ip rt
calbr at ion kit E-cal mod le) w hic is s p led by t he s p ler of t he V NA
— Calbration art efact s in ac ordan e with the relev ant clau e of EN 5 2 9-1-1 for calbrat ion at the t est
int erace (if a pled) To p rorm a calbration at t he test interace, calbration art efact s, i.e a s ort circ it,
an o en circ it an a referen e lo d, are req ired
— R esist or t erminat ion network (R TN) for t erminat ion of inact iv e p irs The resist or t erminat ion netw ork
s al prov ide t he diferent ial mode an t he common mode referen e t erminat ion imp dan es It is
recommen ed t o u e resistor t erminat ion network in ac ordan e w it h An e C of EN 5 2 9-1-1
4.2.2 Te t s mple
The CUT s al have a minimum len t h as sp cified in t he relev ant sect ional sp cificat ion Bot h en s of t he
CUT s al b pre ared, s c t hat w hen con ect ed to t he t erminals of t he t est eq ipment t he influen e to t he
t est res lt is minimized The twistin of t he p irs/quad s al b maint ained
4.2.3 Cal bration proc dure
It is not t he int ent of t he st an ar d t o det ai the algorithms a pled by a V NA t o corect t he me s red res lt s
b sed on a calbration proced re but to det ai t he calbrat ion proced re Furt her informat ion may b o t ained
in the man als of t he VNA s p ler
A ful 4-p rt sin le en ed (SE) calbrat ion s al b p rormed in ac ordan e w it h t he relevant clau e of
EN 5 2 9-1-1 The calbration s al b p rormed eit her at he en s of t he co x ial intercon ection ca les, in
w hic case de-emb d in t ec niq es may b req ired t o remove t he efect s of t he test fix t ure, or at t he t est
int erace
4.2.4 Me s rin proc d re
The CUT s al b con ected t o t he terminals of t he t est eq ipment as de ict ed in Fig re , in lu in pro er
t erminat ion of t he active p irs, t he inact iv e p irs, an t he s re n
The con ect ion of t he CUT t o the t est p rt s s al b o t imized, s c that mismatchin is minimiz ed F r the
inactive p irs, it is recommen ed t o a ply resist or ter minat ion netw ork as referen ed in 4.2.1
Trang 10Fig re 2 — At te ua on me s reme t u in balu - l s te t met hod
A ful SE S-mat rix me s rement s al b p rormed ov er t he whole feq en y ran e an at t he same
feq en y p int s as for t he calbration proced re The me s red SE S-mat rix s al b t ran formed int o t he
as ociat ed mix ed mode S-mat rix t o o t ain t he S-p ramet er SD D21 fom whic t he at t en ation is det ermined
Al p irs/quad of t he CUT s al b me s red
Un er mat ched con ition , t he at t en ation of t he CUT is given by:
D D
1
2
(4)
4.3 Method C: T est method for coax ial c bles
4.3.1 Te t e uipme t
The t est eq ipment con ists of a v ect or network analy ser (V NA) havin at le st 2 p rt s, an t he folowin :
— S-p ramet er set -up (s al b ca a le of p rormin S
21
me s rement s)
— Imp dan e mat chin ada ters t o conv ert t he nominal imp dan e of t he CUT (e.g 7 Ω) to the nominal
imp dan e of t he V NA (e.g 5 Ω), in case t hey are diferent
— Calbration stan ard t o p rorm t he req ired calbr at ion of t he test eq ipment at t he t est int eraces
De en in on t he nominal imp dan e of t he CUT, t he t est int erace wil b at t he co x ial p rt s of t he
V NA (or at t he en of s it able t est ca les), or on t he secon ary side of an imp dan e mat chin ada t er
To p rorm a ful 2-p rt calbrat ion at t he test int eraces, calbrat ion st an ard , i.e a s ort circ it, an o en
circ it , a referen e lo d, an a throu h con ect ion, are req ired The t hr ou h con ect ion s al b w el
mat ched t o t he nominal imp dan e an have a low at t en at ion An alternativ e to t he b fore ment ioned
o en, s ort , lo d, an t hrou h referen es is t he u e of an elect ronic mult ip rt calbration kit (E-cal