说明:收录90万 73个行业的国家标准 支持批量下载
!"#$$%&’(%(& )$$ !"#$%&’’()* *+,-&.’’&/&000 !"#$%&’()*+,-. 1#234 /0123456 -567896:;<=569>96:?9@8<@>#23?A:8<B9<<9@898?5A>:65>@A CA@:D6:<?98E:8D?5;5F9<9@8@=?96:;C:6GC@8585?H@AG &000I&(I&( 78 J(((I(KI(& 9: ’(+,-./01 78!"#$%&’’%(%))) ! " !" * ++++++++++++++++++++++++++++++++++++++++ #" , +++++++++++++++++++++++++++++++++++++++++ , $% , +++++++++++++++++++++++++++++++++++++++ - #&’( , +++++++++++++++++++++++++++++++++++++ . )* - +++++++++++++++++++++++++++++++++++++++ / +,-./0 0 +++++++++++++++++++++++++++++++++++ 1 1-.2)34 0 ++++++++++++++++++++++++++++++++++ 2 1-.56 3 ++++++++++++++++++++++++++++++++++++ 0 1-.789 ,, +++++++++++++++++++++++++++++++++++ 3 :-.2)34 ,4 ++++++++++++++++++++++++++++++++++ 4 :-.56 ,4 ++++++++++++++++++++++++++++++++++++ ,5 :-.789 -5 ++++++++++++++++++++++++++++++++++ ;< 67 ’(=;< 8 >?=’(@A -0 +++++++++++++++++++++++++ !"#$%&’’%(%))) ! " !"#$%&’()*)+,-’(*+./0123452%’()+6789:;0<= > * =?@A * B=C01DEFGHIJ< + !"#<KLJMNO@PQR< ,-./- C ,01 "# + STUVWX 2 !"#YZ[’()+89:;01<\]H^_ + !"#$S’‘aKbcQR2%%&"# *,-./- "#C ,01 "# 2 d,ec%fg89:; =?<hijkLl<mnopq< + rcstuv<wGCxy%g<z{|} 2 ~ !"# f $ SQ Y<%v"#2 %&’()* 2 !"# +,-. c /0 f $ < .1#!2 P 34 < 56 + !"#2 2 ) 7 :; ,8 "# 9:; c 3445678#9 #<= X< >? + @ r A t BC o< D I) 7 :; ,8EFGH Y IJ <:; >? : K* 2 SuvYP2 LMNO>? < P, 2 @QRS 5 <T= J M + UV 2 W P XYZ 6:;=?<:; >?E[=\] 3;<678#92 6 Y^_‘ P ab <:; >? S F cdJ 2 +, @P6{ efghi1 t jkl 2 : != 2 6 m :; ,8n $ :; < op 2 QYa 2 IJ % =-5/3>=-5/3? N FK>?qr <6 ,8 "# + !"# sT c @45678#9 >?,8 2 t $rc uv ’):;012)+ 4Uwxy :< MN + rc z{4U|%} ( ~ ! i =uv4U "# 5 $ lMN 2 )+ 4UwxRS @P @ABAB < %& 5 ’( ) 2 !M <:; ’ ? * FO t B;5678#9+@45678#9 <:; >?[= ( sa: +,- )+ 4U : Q . l X 2C@5678#9 <:; >? /0 [ : +1- )+ 4U 2 d 2 < uv:;O ? 3 O + t 4 2 / "# 5 [=I 6 a 78 ’()+ e 9 < : p + !"# : d. c t 4 < N ; D < S6:; => \ ? 2 c @ 67 AB * 2 =?Y G C @y DE z F < GH = IJ . KLMNO + @ rZ[6 > Ll: + >? < dJ 2 6:;=?<\ PQ ?h S Fc a s T 2 . K ab RSTU < [G V h * sT + !"# W Jc XY < () Z[) = s@PQY< GH 2 @ r XY OY *\]^_ . 6 ! io< ‘ O + !"# W Jc ab ,8 < 1c KL de 2 f S Z 2 g % h 1 ij l1 2 t Zkl % QY<YP @ % m t *n < jk C op JM + t 4 < 1q mne r* % s tb tu 5 vw < xyz{ + !"#2 !% <KL |} $mt ~ !"# C $%&’ * < | 2 0 % ()*+, < 1C $mt ~ h -./ * 0 < w > ( 1 + < "#wGVWrS 1 J< 23 C 4356 f 2 =#H ~< 789# X 2 !% <KL } Y uv !"# ! k < - " + ? :; &Yl Q ? : =? 2 d <. :;] ~ ! < "# : H vw => u [ => a ? luv<VW{ e => + 1c < ab KL @AB ,-./- @u ,01 <QY"# : K* 2 h CD a ; &~ V < ab EF + SV Wq G < Vd X 2 Y HIJ %v"# KL + t% s t 2 M %vo<q G |}d T N ’) e 9 <\] O P + !"#< QR E $"#< QR + !"# A %&’()*)+,- d. + !"# A %&’()*)+,-"# 8 W S jk! T 8 + !"# A %&’()*)+,-’(*+./0123 UVWX + !"# Y N WX L D Z[ o * \] + F !"#$%&’’()* +,-./012345678 !"#$% 9:;<=>?@ &’()*+(,-./’(+0+(,1+2*.20"#$13,*.4+..+2*+*1’30,(’023 532,6(,.1+*7,*61’-’8+.+2*2/1+(,-5,(952* ’*’1:239;<=& >?@@>A>BBB ’(AB=>CDE >BBBC>DC>D F* EDDDCDFCD> GHIJ !"#$%&’()*+,-./0123 G 4#’( H 56$789 H ):;< H =>?@ H AB C#D I EFGHIJK?@56LM !JKL% NO M PNOQRSTUVWXYZ M > @K PNO[\]!"#$4^%&’() ! _*+‘&): % ?@56LM !JKL% 4#23abc d M PNO8efgh!"#$4^%&’() I Iij):[kGl H GHm1 H ):nGCopV qr M PNO_8ef’(stVGlC[k M E IL)* -uNOv*wVxy I z{|PNOUV}e~ !" PNOVxy M PNO #$ = I v %$ P & j ’( M v ’ NO )*+,- I . ePNOVg / I 01. e-uNO 23$ PV 456 M NOPQORSTUVGWXXY 78 4 9:;< 5V\ = C >?/@ NOPQORSTUZGWXXY 78 4 9 4^V A6 NOPQORSTUUGWXXT BCDE78 4 9 4^V A6 NOPQORSTTWGWXXT 4 9FGH:; ze < 5V\ = C >?/@ NOPQORST[WGWXXT . e4 FGH ! *+4 I e H % V JK C LM & N M O V P5A6 NOPQORSTXZGWXX[ ’ 4 FGH V Q z R M O V423 NOPQORSYV\GWXXW Mu5623V S < = # TA6 NOPQORSYVYGWXXT ?@56LM !JKL% ): UV 23 NOPQORSY[\GWXXT ?@56LM !JKL% I eGH P5WX V A6 NOPQORS[W\GWXXTJKL GH Y => !J]^% \= A6 NOPQORS[Z\GWXX\ZV_[‘abc=d Mu Z! 56):U [\ C ]^ V _‘ NOPQORS[Z_GWXX\WU__‘abc=d Mu Z! 56):U [\ C ]^ V _‘ NOPQORS[ZUGWXX\ ?@56LM !JKL% ):V [\ C ]^_‘ NOPQORSXUYGWXXU a ?@56Z bZ!:; VGHCM O V423 NOPQORSXU[GWXX_ ?@56LM !JKL% V4^56& N M O N]^TWZ[VQWQWGWXX[ 4 9 z cd M Oe P >?fg W W h G X i z cd M O V >?fg W W W ! ! "#$%&’()*+$,-./ "#$%&’()*&*+!&,,( $01234567.89:; & < ! =>12345&.89:; + ! !

.pdf文档 GB-T 17881-1999 广播电视光缆干线同步数字体系 SDH 传输接口技术规范

文档预览
中文文档 32 页 50 下载 1000 浏览 0 评论 309 收藏 3.0分
温馨提示:本文档共32页,可预览 3 页,如浏览全部内容或当前文档出现乱码,可开通会员下载原始文档
GB-T 17881-1999 广播电视光缆干线同步数字体系 SDH 传输接口技术规范 第 1 页 GB-T 17881-1999 广播电视光缆干线同步数字体系 SDH 传输接口技术规范 第 2 页 GB-T 17881-1999 广播电视光缆干线同步数字体系 SDH 传输接口技术规范 第 3 页
下载文档到电脑,方便使用
本文档由 人生无常 于 2025-07-12 22:04:53上传分享
友情链接
站内资源均来自网友分享或网络收集整理,若无意中侵犯到您的权利,敬请联系我们微信(点击查看客服),我们将及时删除相关资源。