瀑布造型

這(zhe)是(shi)一(yi)(yi)種(zhong)比較古老的布(bu)線(xian)造型，有時還能(neng)看到其蹤影。它采(cai)用了“花果山水簾洞”的藝術形象，從配線(xian)架的模(mo)塊上(shang)直(zhi)接將雙絞(jiao)(jiao)線(xian)垂蕩下來，分布(bu)整(zheng)齊時有一(yi)(yi)種(zhong)很(hen)漂(piao)亮(liang)的層(ceng)次感(每層(ceng)24-48根雙絞(jiao)(jiao)線(xian))。

這種造型(xing)的(de)優(you)點(dian)是節省(sheng)理(li)線(xian)(xian)人(ren)工(gong)，缺點(dian)則比較(jiao)多，例(li)如(ru)(ru)：安裝網(wang)絡(luo)設(she)備時(shi)(shi)容(rong)易破壞造型(xing)，甚至出現不易將網(wang)絡(luo)設(she)備安裝到位的(de)現象;每(mei)根雙(shuang)絞線(xian)(xian)的(de)重量(liang)全部(bu)變成拉力，作用在(zai)(zai)模塊(kuai)的(de)后側(ce)。如(ru)(ru)果在(zai)(zai)端(duan)接點(dian)之前沒(mei)有對雙(shuang)絞線(xian)(xian)進(jin)行綁扎，那(nei)(nei)么這一(yi)拉力有可能會在(zai)(zai)數月、數年(nian)后將模塊(kuai)與雙(shuang)絞線(xian)(xian)分離(li)，引起斷線(xian)(xian)故障;萬(wan)一(yi)在(zai)(zai)該(gai)配線(xian)(xian)架中某一(yi)個模塊(kuai)需要(yao)重新端(duan)接，那(nei)(nei)維護人(ren)員只能探入“水簾”內進(jin)行施工(gong)，有時(shi)(shi)會身披(pi)數十根雙(shuang)絞線(xian)(xian)，而(er)且因雙(shuang)向沒(mei)有光(guang)源，造成端(duan)接時(shi)(shi)看不清。

逆向理線

逆向理(li)(li)線(xian)(xian)(xian)(xian)是(shi)(shi)在(zai)配線(xian)(xian)(xian)(xian)架(jia)的(de)模塊端(duan)接完畢后(hou)，并(bing)通(tong)過測試后(hou)，再進行機柜理(li)(li)線(xian)(xian)(xian)(xian)。其方法是(shi)(shi)從模塊開始向機柜外理(li)(li)線(xian)(xian)(xian)(xian)，同時(shi)橋(qiao)架(jia)內也進行理(li)(li)線(xian)(xian)(xian)(xian)。這樣做的(de)優點是(shi)(shi)理(li)(li)線(xian)(xian)(xian)(xian)在(zai)測試后(hou)，不會(hui)因某根雙絞(jiao)線(xian)(xian)(xian)(xian)測試通(tong)不過而造成重新理(li)(li)線(xian)(xian)(xian)(xian)，而缺點是(shi)(shi)由(you)于兩端(duan)(進線(xian)(xian)(xian)(xian)口和配線(xian)(xian)(xian)(xian)架(jia))已經(jing)固(gu)定，在(zai)機房內的(de)某一(yi)處必然會(hui)出現大量的(de)亂線(xian)(xian)(xian)(xian)(一(yi)般在(zai)機柜的(de)底部)。

逆向理(li)線一般為人工理(li)線，憑借肉眼和雙手完成理(li)線。

逆向理(li)線的優點是測(ce)試已(yi)經完成，不必擔(dan)心(xin)機柜后(hou)側的線纜(lan)長(chang)度(du)。而缺(que)點是因為線纜(lan)的兩(liang)(liang)端(duan)已(yi)經固(gu)定，線纜(lan)之(zhi)間會(hui)產生大量的交叉，要想理(li)整齊(qi)十分(fen)費力(li)，而且在兩(liang)(liang)個固(gu)定端(duan)之(zhi)間必然有一處的雙絞線是散亂的，這一處往往在地板下(下進(jin)線時)或天花上(上進(jin)線時)。

正向理線

正向(xiang)理(li)線(xian)是在配線(xian)架端接前進(jin)行(xing)理(li)線(xian)。它(ta)從機(ji)房的(de)進(jin)線(xian)口開(kai)始，將線(xian)纜逐段整理(li)，直到(dao)配線(xian)架的(de)模塊處(chu)為止(zhi)。在理(li)線(xian)后再進(jin)行(xing)端接和(he)測試。

正(zheng)向理線(xian)(xian)(xian)(xian)(xian)(xian)(xian)所要達到的(de)(de)(de)目標(biao)是：自機(ji)(ji)房(fang)(fang)(或機(ji)(ji)房(fang)(fang)網絡區(qu))的(de)(de)(de)進線(xian)(xian)(xian)(xian)(xian)(xian)(xian)口至配線(xian)(xian)(xian)(xian)(xian)(xian)(xian)機(ji)(ji)柜的(de)(de)(de)水平(ping)(ping)(ping)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)以每(mei)個(ge)16/24/32/48口配線(xian)(xian)(xian)(xian)(xian)(xian)(xian)架為(wei)單位，形成一束(shu)(shu)束(shu)(shu)的(de)(de)(de)水平(ping)(ping)(ping)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)束(shu)(shu)，每(mei)束(shu)(shu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)內所有(you)的(de)(de)(de)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)全(quan)部(bu)(bu)平(ping)(ping)(ping)行(在(zai)短(duan)距(ju)離內的(de)(de)(de)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)平(ping)(ping)(ping)行所產生的(de)(de)(de)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)間串擾不(bu)會影響總(zong)體(ti)性能，因為(wei)橋(qiao)架和電線(xian)(xian)(xian)(xian)(xian)(xian)(xian)管(guan)中鋪設(she)(she)著每(mei)根雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)的(de)(de)(de)大部(bu)(bu)分，這部(bu)(bu)分是散放的(de)(de)(de)，是不(bu)平(ping)(ping)(ping)行的(de)(de)(de))，各(ge)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)束(shu)(shu)之間全(quan)部(bu)(bu)平(ping)(ping)(ping)行;在(zai)機(ji)(ji)柜內每(mei)束(shu)(shu)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)順勢彎曲后(hou)鋪設(she)(she)到各(ge)配線(xian)(xian)(xian)(xian)(xian)(xian)(xian)架的(de)(de)(de)后(hou)側(ce)，整個(ge)過程(cheng)仍然保(bao)持(chi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)束(shu)(shu)內雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)全(quan)程(cheng)平(ping)(ping)(ping)行。在(zai)每(mei)個(ge)模(mo)塊(kuai)后(hou)側(ce)從線(xian)(xian)(xian)(xian)(xian)(xian)(xian)束(shu)(shu)底(di)部(bu)(bu)將該模(mo)塊(kuai)所對應(ying)的(de)(de)(de)雙絞(jiao)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)抽(chou)出(chu)，核對無誤后(hou)固定(ding)在(zai)模(mo)塊(kuai)后(hou)的(de)(de)(de)托線(xian)(xian)(xian)(xian)(xian)(xian)(xian)架上或穿入配線(xian)(xian)(xian)(xian)(xian)(xian)(xian)架的(de)(de)(de)模(mo)塊(kuai)孔內。

正(zheng)向理(li)線(xian)(xian)的(de)優點是可以保證(zheng)機房(fang)內線(xian)(xian)纜在(zai)每點都整齊，且不會(hui)(hui)出(chu)現(xian)線(xian)(xian)纜交叉。而缺點是如(ru)果(guo)線(xian)(xian)纜本身在(zai)穿線(xian)(xian)時已(yi)經損壞(huai)，則測(ce)試通不過會(hui)(hui)造成重新(xin)理(li)線(xian)(xian)。因(yin)此，正(zheng)向理(li)線(xian)(xian)的(de)前提是對線(xian)(xian)纜和(he)穿線(xian)(xian)的(de)質量有(you)足夠的(de)把握。

正向理線(xian)的優點是在機(ji)房(主機(ji)房的網絡(luo)區或弱電(dian)間)中自進線(xian)口至配(pei)線(xian)架之(zhi)間全部整齊(qi)、平行(xing)，十(shi)分(fen)美(mei)觀。缺(que)點是施工(gong)人員要對自己的施工(gong)質量有(you)著充(chong)分(fen)的把(ba)握，只有(you)在基本上不會重(zhong)新(xin)端接的基礎上才能進行(xing)正向理線(xian)施工(gong)。

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