鐔遍杸(m茅n)鐢�(ch菐n)鍝侊細
鏃ョ敤浜旈噾
杈�(n贸ng)鐢ㄤ簲閲�
瀹剁敤浜旈噾
浠�涔堟槸闆欑禐绶�
涓�,姒傝堪
闆欑禐绶歍P:Twisted Pairwire鏄稖鍚堝竷绶氬伐绋嬩腑甯哥敤鐨勪竴绋偝杓镐粙璩�(zh矛).闆欑禐绶氱敱鍏╂牴鍏锋湁绲曠罚淇濊(h霉)灞ょ殑閵呭皫(d菐o)绶氱祫鎴�.鎶婂叐鏍圭禃绶ｇ殑閵呭皫(d菐o)绶氭寜涓�瀹氬瘑搴︿簰鐩哥禐鍦ㄤ竴璧�,鍙檷浣庝俊铏�(h脿o)骞叉摼鐨勭▼搴�,姣忎竴鏍瑰皫(d菐o)绶氬湪鍌宠几涓蓟灏勭殑闆绘尝鏈�(hu矛)琚彟涓�鏍圭窔涓婄櫦(f膩)鍑虹殑闆绘尝鎶垫秷.闆欑禐绶氫竴鑸敱鍏╂牴22锝�26铏�(h脿o)绲曠罚閵呭皫(d菐o)绶氱浉浜掔簭绻炶�屾垚.濡傛灉鎶婁竴灏�(du矛)鎴栧灏�(du矛)闆欑禐绶氭斁鍦ㄤ竴鍊�(g猫)绲曠罚濂楃涓究鎴愪簡闆欑禐绶氶浕绾�.鍦ㄩ洐绲炵窔闆荤簻涔熺ū闆欐壄绶氶浕绾滃収(n猫i),涓嶅悓绶氬皪(du矛)鍏锋湁涓嶅悓鐨勬壄绲為暦(zh菐ng)搴�,涓�鑸湴瑾�(shu艒),鎵禐闀�(zh菐ng)搴﹀湪38.1cm鑷�14cm鍏�(n猫i),鎸夐�嗘檪(sh铆)閲�?l猫)杈冭毢銇漡,鐩歌嚚绶氬皪(du矛)鐨勬壄绲為暦(zh菐ng)搴﹀湪12.7cm浠ヤ笂.鑸囧叾浠栧偝杓镐粙璩�(zh矛)鐩告瘮,闆欑禐绶氬湪鍌宠几璺濋洟,淇￠亾瀵害鍜屾暩(sh霉)鎿�(j霉)鍌宠几閫熷害绛夋柟闈㈠潎鍙楀埌涓�瀹氶檺鍒�,浣嗗児(ji脿)鏍艰純鐐轰綆寤�.鐩墠,闆欑禐绶氬彲鍒嗙偤闈炲睆钄介洐绲炵窔UTP:Unshilded Twisted Pair鍜屽睆钄介洐绲炵窔STP:Shielded Twisted Pair.
闆栫劧闆欑禐绶氫富瑕佹槸鐢ㄤ締(l谩i)鍌宠几妯℃摤鑱查煶淇℃伅鐨�,浣嗗悓妯ｉ仼鐢ㄤ簬鏁�(sh霉)瀛椾俊铏�(h脿o)鐨勫偝杓�,鐗瑰垾閬╃敤浜庤純鐭窛闆㈢殑淇℃伅鍌宠几.鍦ㄥ偝杓告湡闁�,淇¤櫉(h脿o)鐨勮“娓涙瘮杓冨ぇ,骞朵笖鐢�(ch菐n)鐢熸尝褰㈢暩璁�.閲囩敤闆欑禐绶氱殑灞�鍩熺恫(w菐ng)鐨勫付瀵彇姹轰簬鎵�鐢ㄥ皫(d菐o)绶氱殑璩�(zh矛)閲�,闀�(zh菐ng)搴﹀強鍌宠几鎶�琛�(sh霉).鍙绮惧績閬告搰鍜屽畨瑁濋洐绲炵窔,灏卞彲浠ュ湪鏈夐檺璺濋洟鍏�(n猫i)閬�(d谩)鍒版瘡绉掑咕鐧捐惉(w脿n)浣嶇殑鍙潬鍌宠几鐜�.鐣�(d膩ng)璺濋洟寰堢煭,骞朵笖閲囩敤鐗规畩鐨勯浕瀛愬偝杓告妧琛�(sh霉)鏅�(sh铆),鍌宠几鐜囧彲閬�(d谩)100Mbps锝�155Mbps.鐢变簬鍒╃敤闆欑禐绶氬偝杓镐俊鎭檪(sh铆)瑕佸悜鍛�?ch膿)顚嗩姾?淇℃伅寰堝鏄撹绔婅伣(t墨ng),鍥犳瑕佽姳璨�(f猫i)椤嶅鐨勪唬鍍�(ji脿)鍔犱互灞忚斀.灞忚斀闆欑禐绶氶浕绾滅殑澶栧堡鐢遍媮娉婂寘瑁�,浠ユ笡灏忓箙灏�,浣嗗苟涓嶈兘瀹屽叏娑堥櫎杓诲皠.灞忚斀闆欑禐绶氬児(ji脿)鏍肩浉灏�(du矛)杓冮珮,瀹夎鏅�(sh铆)瑕佹瘮闈炲睆钄介洐绲炵窔闆荤簻鍥伴洠.椤炰技浜庡悓杌搁浕绾�,瀹冨繀闋堥厤鏈夋敮鎸佸睆钄藉姛鑳界殑鐗规畩閫ｇ祼(ji茅)鍣ㄥ拰鐩告噳(y墨ng)鐨勫畨瑁濇妧琛�(sh霉).浣嗗畠鏈夎純楂樼殑鍌宠几閫熺巼,100绫冲収(n猫i)鍙仈(d谩)鍒�155Mbps.
鍙﹀,闈炲睆钄介洐绲炵窔闆荤簻鍏锋湁浠ヤ笅鍎�(y艒u)榛�(di菐n):
1鐒�(w煤)灞忚斀澶栧,鐩村緫灏�,绡�(ji茅)鐪佹墍鍗犵敤鐨勭┖闁�;
2閲嶉噺杓�,鏄撳綆鏇�,鏄撳畨瑁�;
3灏囦覆?d膩ng)_娓涜嚦灏忔垨鍔犱互娑堥櫎;
4鍏锋湁闃荤噧鎬�;
5鍏锋湁鐛�(d煤)绔嬫�у拰闈堟椿鎬�,閬╃敤浜庣祼(ji茅)妲�(g貌u)鍖栫稖鍚堝竷绶�.
浜�,瑕�(gu墨)鏍煎瀷铏�(h脿o)
EIA/TIA鐐洪洐绲炵窔闆荤簻瀹氱京浜嗕簲绋笉鍚岃唱(zh矛)閲忕殑鍨嬭櫉(h脿o).瑷�(j矛)绠楁(j墨)缍�(w菐ng)绲�(lu貌)缍滃悎甯冪窔浣跨敤绗笁,鍥�,浜旈.閫欎簲绋瀷铏�(h脿o)濡備笅:
1,椤�:涓昏鐢ㄤ簬鍌宠几瑾�(y菙)闊充竴椤炴(bi膩o)婧�(zh菙n)涓昏鐢ㄤ簬鍏崄骞翠唬鍒濅箣鍓嶇殑闆昏┍绶氱簻,涓嶇敤浜庢暩(sh霉)鎿�(j霉)鍌宠几.
2,绗簩椤�:鍌宠几闋荤巼鐐�1MHz,鐢ㄤ簬瑾�(y菙)闊冲偝杓稿拰楂樺偝杓搁�熺巼4Mbps鐨勬暩(sh霉)鎿�(j霉)鍌宠几,甯歌(ji脿n)浜庝娇鐢�4Mbps瑕�(gu墨)鑼冧护鐗屽偝閬炲崝(xi茅)璀扮殑鑸婄殑浠ょ墝缍�(w菐ng).
3,绗笁椤�:鎸囩洰鍓嶅湪ANSI鍜孍IA/TIA568妯�(bi膩o)婧�(zh菙n)涓寚瀹氱殑闆荤簻.瑭查浕绾滅殑鍌宠几闋荤巼鐐�16MHz,鐢ㄤ簬瑾�(y菙)闊冲偝杓稿強楂樺偝杓搁�熺巼鐐�10Mbps鐨勬暩(sh霉)鎿�(j霉)鍌宠几,涓昏鐢ㄤ簬10base-T.
4,绗洓椤�:瑭查闆荤簻鐨勫偝杓搁牷鐜囩偤20MHz,鐢ㄤ簬瑾�(y菙)闊冲偝杓稿拰楂樺偝杓搁�熺巼16Mbps鐨勬暩(sh霉)鎿�(j霉)鍌宠几,涓昏鐢ㄤ簬鍩轰簬浠ょ墝鐨勫眬鍩熺恫(w菐ng)鍜�10base-T/100base-T.
5,绗簲椤�:瑭查闆荤簻澧炲姞浜嗙篂绶氬瘑搴�,澶栧涓�绋珮璩�(zh矛)閲忕殑绲曠罚鏉愭枡,鍌宠几闋荤巼鐐�100MHz,鐢ㄤ簬瑾�(y菙)闊冲偝杓稿拰楂樺偝杓搁�熺巼鐐�100Mbps鐨勬暩(sh霉)鎿�(j霉)鍌宠几,涓昏鐢ㄤ簬100base-T鍜�10base-T缍�(w菐ng)绲�(lu貌),閫欐槸甯哥敤鐨勪互澶恫(w菐ng)闆荤簻.
闆欑禐绶氬垎鐐哄睆钄介洐绲炵窔鑸囬潪灞忚斀闆欑禐绶氬叐澶ч.鍦ㄩ�欏叐澶ч涓張鍒�100姝愬闆荤簻,闆欓珨闆荤簻,澶у皪(du矛)鏁�(sh霉)闆荤簻,150姝愬灞忚斀闆荤簻.鍏烽珨鍨嬭櫉(h脿o)鏈夊绋�,濡傚湒1鎵�绀�.鍦栦腑AWG琛ㄧず缇庡湅(gu贸)绶氱簻瑕�(gu墨)鏍�.
涓�,鎬ц兘鎸囨(bi膩o)
灏�(du矛)浜庨洐绲炵窔,鐢ㄦ埗闂�(gu膩n)蹇冪殑鏄〃寰佸叾鎬ц兘鐨勫咕鍊�(g猫)鎸囨(bi膩o).閫欎簺鎸囨(bi膩o)鍖呮嫭琛版笡,杩戠涓�?d膩ng)_,闃绘姉鐗规��,鍒嗗竷闆诲,鐩存祦闆婚樆绛�.
1琛版笡
琛版笡Attenuation鏄部閺堣矾鐨勪俊铏�(h脿o)鎼嶅け搴﹂噺.琛版笡鑸囩窔绾滅殑闀�(zh菐ng)搴︽湁闂�(gu膩n)绯�,闅ㄨ憲闀�(zh菐ng)搴︾殑澧炲姞,淇¤櫉(h脿o)琛版笡涔熼毃涔嬪鍔�.琛版笡鐢�"db"浣滃柈浣�,琛ㄧず婧愬偝閫佺淇¤櫉(h脿o)鍒版帴鏀剁淇¤櫉(h脿o)寮�(qi谩ng)搴︾殑姣旂巼.鐢变簬琛版笡闅ㄩ牷鐜囪�岃畩鍖�,鍥犳,鎳�(y墨ng)娓�(c猫)閲忓湪鎳�(y墨ng)鐢ㄨ寖鍦嶅収(n猫i)鐨勫叏閮ㄩ牷鐜囦笂鐨勮“娓�.
2杩戠涓�?d膩ng)_
涓�?d膩ng)_鍒嗚繎绔覆?d膩ng)_鍜岄仩(yu菐n)绔覆?d膩ng)_FEXT,娓�(c猫)瑭﹀剙涓昏鏄脯(c猫)閲廚EXT,鐢变簬瀛樺湪绶氳矾鎼嶈��,鍥犳FEXT鐨勯噺鍊肩殑褰遍熆杓冨皬.杩戠涓�?d膩ng)_NEXT鎼嶈�楁槸娓�(c猫)閲忎竴姊漊TP閺堣矾涓緸涓�灏�(du矛)绶氬埌鍙︿竴灏�(du矛)绶氱殑淇¤櫉(h脿o)鑰﹀悎.灏�(du矛)浜嶶TP閺堣矾,NEXT鏄竴鍊�(g猫)闂�(gu膩n)閸电殑鎬ц兘鎸囨(bi膩o),涔熸槸闆ｆ脯(c猫)閲忕殑涓�鍊�(g猫)鎸囨(bi膩o).闅ㄨ憲淇¤櫉(h脿o)闋荤巼鐨勫鍔�,鍏舵脯(c猫)閲忛洠搴﹀皣鍔犲ぇ.
NEXT骞朵笉琛ㄧず鍦ㄨ繎绔粸(di菐n)鎵�鐢�(ch菐n)鐢熺殑涓�?d膩ng)_鍊�,瀹冨彧鏄〃绀哄湪杩戠榛�(di菐n)鎵�娓�(c猫)閲忓埌鐨勪覆?d膩ng)_鍊�.閫欏��(g猫)閲忓�兼渻(hu矛)闅ㄩ浕绾滈暦(zh菐ng)搴︿笉鍚岃�岃畩,闆荤簻瓒婇暦(zh菐ng),鍏跺�艰畩寰楄秺灏�.鍚屾檪(sh铆)鐧�(f膩)閫佺鐨勪俊铏�(h脿o)涔熸渻(hu矛)琛版笡,灏�(du矛)鍏跺畠绶氬皪(du矛)鐨勪覆?d膩ng)_涔熺浉灏�(du矛)璁婂皬.瀵�(sh铆)椹�(y脿n)璀夋槑,鍙湁鍦�40绫冲収(n猫i)娓�(c猫)閲忓緱鍒扮殑NEXT鏄純鐪熷(sh铆)鐨�.濡傛灉鍙︿竴绔槸閬�(yu菐n)浜�40绫崇殑淇℃伅鎻掑骇,閭ｄ箞瀹冩渻(hu矛)鐢�(ch菐n)鐢熶竴瀹氱▼搴︾殑涓�?d膩ng)_,浣嗘脯(c猫)瑭﹀剙鍙兘鐒�(w煤)娉曟脯(c猫)閲忓埌閫欏��(g猫)涓�?d膩ng)_鍊�.鍥犳,濂藉湪鍏╁��(g猫)绔粸(di菐n)閮介��(j矛n)琛孨EXT娓�(c猫)閲�.鐝�(xi脿n)鍦ㄧ殑娓�(c猫)瑭﹀剙閮介厤鏈夌浉鎳�(y墨ng)瑷�(sh猫)鍌�,浣垮緱鍦ㄩ張璺竴绔氨鑳芥脯(c猫)閲忓嚭鍏╃鐨凬EXT鍊�.NEXT娓�(c猫)瑭︾殑绲�(ji茅)鏋滃弮鐓ц〃1鍜岃〃2.
