{"id":22361,"date":"2026-09-24T12:37:44","date_gmt":"2026-09-24T04:37:44","guid":{"rendered":"https:\/\/www.luleey.com\/?p=22361"},"modified":"2026-09-23T12:59:19","modified_gmt":"2026-09-23T04:59:19","slug":"sfp-rx-los-vs-tx-fault-what-each-alarm-means","status":"publish","type":"post","link":"https:\/\/www.luleey.com\/ja\/sfp-rx-los-vs-tx-fault-what-each-alarm-means\/","title":{"rendered":"SFP\u306eRX LOS\u3068TX Fault\uff1a\u5404\u30a2\u30e9\u30fc\u30e0\u306e\u610f\u5473"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-9ece3cbf\"><strong><a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ja\/tag\/sfp\/\" title=\"SFP \u306e\u6295\u7a3f\u3092\u3059\u3079\u3066\u8868\u793a\">\u306d\u3093\u308a\u3087\u3046\u30d7\u30fc\u30eb<\/a> <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ja\/tag\/rx-los\/\" title=\"RX LOS\u306e\u3059\u3079\u3066\u306e\u6295\u7a3f\u3092\u8868\u793a\">RX LOS<\/a> vs <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ja\/tag\/tx-fault\/\" title=\"\u300cTX Fault\u300d\u306e\u3059\u3079\u3066\u306e\u6295\u7a3f\u3092\u8868\u793a\">TX \u30d5\u30a9\u30fc\u30eb\u30c8<\/a><\/strong> \u3053\u308c\u306f\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u65b9\u5411\u6027\u3092\u793a\u3059\u8cea\u554f\u3067\u3042\u308a\u3001\u540c\u3058\u969c\u5bb3\u306b\u5bfe\u3059\u308b2\u3064\u306e\u540d\u79f0\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u300cRX LOS\u300d\u3068\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u53d7\u4fe1\u4fe1\u53f7\u55aa\u5931\u72b6\u614b\u3092\u5831\u544a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u300cTX Fault\u300d\u3068\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u9001\u4fe1\u5074\u3067\u554f\u984c\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u5831\u544a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-90a88710\">\u3044\u305a\u308c\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u3082\u3001\u305d\u308c\u3060\u3051\u3067\u306f\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u5168\u4f53\u306b\u4e0d\u5177\u5408\u304c\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305a\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u5831\u544a\u3057\u3066\u3044\u308b\u7aef\u5b50\u304b\u3089\u59cb\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u308b\u901a\u4fe1\u65b9\u5411\u3092\u7279\u5b9a\u3057\u3001\u305d\u306e\u65b9\u5411\u306e\u90e8\u54c1\u30921\u3064\u305a\u3064\u9806\u306b\u30c6\u30b9\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2aafb900\">\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u4e00\u822c\u7684\u306a\u30dd\u30a4\u30f3\u30c8\u30fb\u30c8\u30a5\u30fb\u30dd\u30a4\u30f3\u30c8\u306e\u5149\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8SFP\u304a\u3088\u3073 <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ja\/tag\/sfp-2\/\" title=\"SFP+ \u306e\u6295\u7a3f\u3092\u3059\u3079\u3066\u8868\u793a\">SFP+<\/a> \u30ea\u30f3\u30af\u3002\u6b63\u78ba\u306a\u30e9\u30d9\u30eb\u3001\u6975\u6027\u3001\u304a\u3088\u3073\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u8868\u793a\u306f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u3084\u30db\u30b9\u30c8\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u5b9f\u969b\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<div class=\"wp-block-wd-image wd-block-image wd-36b3e9d8\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" class=\"wp-image-22362\" src=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero.png\" alt=\"\" title=\"\" srcset=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero.png 1000w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero-800x800.png 800w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero-400x400.png 400w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero-768x768.png 768w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero-12x12.png 12w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-vs-tx-fault-hero-150x150.png 150w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-847767e5\">SFP\u306eRX LOS\u3068TX Fault\uff1a1\u5206\u9593\u306e\u9055\u3044<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3546919a\">\u30c7\u30d0\u30a4\u30b9A\u3068\u30c7\u30d0\u30a4\u30b9B\u306e\u9593\u306b\u3001\u5358\u7d14\u306a\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9\u30ea\u30f3\u30af\u304c\u69cb\u7bc9\u3055\u308c\u3066\u3044\u308b\u3068\u4eee\u5b9a\u3059\u308b\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30c7\u30d0\u30a4\u30b9B\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u30b9\u30c6\u30fc\u30bf\u30b9<\/th><th>\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u5831\u544a\u3057\u3066\u3044\u308b\u5185\u5bb9<\/th><th>\u6700\u521d\u306b\u691c\u8a0e\u3059\u3079\u304d\u65b9\u5411\u6027<\/th><th>\u305d\u308c\u304c\u8a3c\u660e\u3057\u3066\u3044\u306a\u3044\u3053\u3068<\/th><\/tr><\/thead><tbody><tr><td>RX LOS\u304c\u30a2\u30b5\u30fc\u30c8\u3055\u308c\u305f<\/td><td>B\u306e\u53d7\u4fe1\u6a5f\u306f\u3001\u6709\u52b9\u306a\u53d7\u4fe1\u4fe1\u53f7\u3092\u691c\u51fa\u3057\u307e\u305b\u3093<\/td><td>\u9001\u4fe1\u6a5f \u2192 A\u304b\u3089B\u3078\u306e\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u7d4c\u8def \u2192 B\u306e\u53d7\u4fe1\u6a5f<\/td><td>B\u306e\u53d7\u4fe1\u6a5f\u306f\u9593\u9055\u3044\u306a\u304f\u6545\u969c\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td>TX\u30d5\u30a9\u30fc\u30eb\u30c8\u304c\u767a\u751f\u3057\u307e\u3057\u305f<\/td><td>B\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089\u3001\u30ed\u30fc\u30ab\u30eb\u9001\u4fe1\u6a5f\u306e\u6545\u969c\u304c\u5831\u544a\u3055\u308c\u305f<\/td><td>B\u30db\u30b9\u30c8\u306e\u96fb\u6e90\uff0f\u5236\u5fa1 \u2192 B\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u9001\u4fe1\u6a5f<\/td><td>B-to-A\u30d5\u30a1\u30a4\u30d0\u30fc\u304c\u65ad\u7dda\u3057\u3066\u3044\u307e\u3059<\/td><\/tr><tr><td>\u4e21\u8005\u3068\u3082\u6b21\u306e\u3088\u3046\u306b\u4e3b\u5f35\u3057\u305f<\/td><td>B\u306b\u306f\u30ed\u30fc\u30ab\u30ebTX\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u304a\u308a\u3001\u3055\u3089\u306b\u8a31\u5bb9\u7bc4\u56f2\u5185\u306e\u53d7\u4fe1\u4fe1\u53f7\u3082\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3002<\/td><td>\u5404\u6307\u793a\u3092\u500b\u5225\u306b\u51e6\u7406\u3057\u3001\u305d\u306e\u5f8c\u3001\u5171\u6709\u96fb\u529b\u3001\u69cb\u6210\u3001\u304a\u3088\u3073\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044<\/td><td>1\u672c\u306e\u7e4a\u7dad\u306e\u65ad\u88c2\u304c\u3001\u3059\u3079\u3066\u306e\u75c7\u72b6\u3092\u8aac\u660e\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td>\u3069\u3061\u3089\u3082\u4e3b\u5f35\u3057\u3066\u3044\u306a\u3044\u304c\u3001\u30ea\u30f3\u30af\u304c\u5207\u308c\u3066\u3044\u308b<\/td><td>\u3053\u308c\u30892\u3064\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u4fe1\u53f7\u304b\u3089\u306f\u3001\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093<\/td><td>PMD\u3001\u30ec\u30fc\u30c8\u3001FEC\u3001\u30db\u30b9\u30c8\u30e2\u30fc\u30c9\u3001\u7b26\u53f7\u5316\u3001\u6975\u6027\u3001\u304a\u3088\u3073\u30d4\u30a2\u306e\u72b6\u614b<\/td><td>\u7269\u7406\u7684\u304a\u3088\u3073\u96fb\u6c17\u7684\u306a\u69cb\u6210\u306f\u4e92\u63db\u6027\u304c\u3042\u308a\u307e\u3059<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6095e855\">\u73fe\u5728\u306e <a href=\"https:\/\/members.snia.org\/document\/dl\/25880\" target=\"_blank\" rel=\"noopener\">SNIA SFF-8419 \u4ed5\u69d8<\/a> \u5730\u56f3 <code>Tx_Fault<\/code> \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u9001\u4fe1\u6a5f\u6545\u969c\u51fa\u529b\u3068\u3057\u3066\u3001\u304a\u3088\u3073 <code>Rx_LOS<\/code> \u53d7\u4fe1\u5074\u306e\u4fe1\u53f7\u55aa\u5931\u8868\u793a\u3068\u3057\u3066\u3002\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u3067\u306f\u3001\u53d7\u4fe1\u4fe1\u53f7\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002 <strong>\u4fe1\u53f7\u691c\u51fa<\/strong>. \u3057\u305f\u304c\u3063\u3066\u3001\u53f8\u4f1a\u8005\u306f\u3001\u540c\u3058\u6839\u672c\u7684\u306a\u72b6\u6cc1\u3092\u3001\u80af\u5b9a\u7684\u306a\u8868\u73fe\u3084\u5426\u5b9a\u7684\u306a\u8868\u73fe\u3092\u7528\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001 <code>RX LOS\uff1a\u306f\u3044<\/code> \u307e\u305f\u306f <code>\u4fe1\u53f7\u691c\u51fa\uff1a\u306a\u3057<\/code>.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3f341e3c\">\u306a\u3058\u307f\u306e\u306a\u3044\u3082\u306e\u3092 <code>RX \u969c\u5bb3<\/code> \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u306b\u3001\u305d\u308c\u304c\u300c\u53d7\u4fe1\u4fe1\u53f7\u55aa\u5931\uff08RX LOS\uff09\u300d\u3001\u53d7\u4fe1\u96fb\u529b\u306e\u4f4e\u4e0b\u3001PCS\u306e\u6545\u969c\u3001\u3042\u308b\u3044\u306f\u305d\u306e\u4ed6\u306e\u8907\u5408\u7684\u306a\u72b6\u614b\u306e\u3044\u305a\u308c\u3092\u6307\u3059\u306e\u304b\u304c\u660e\u8a18\u3055\u308c\u308b\u307e\u3067\u306f\u3001\u3053\u306e\u30e9\u30d9\u30eb\u3092\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u304f\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-faabc045\">RX LOS\u306f\u3001\u5230\u6765\u65b9\u5411\u306b\u5411\u304b\u3063\u3066\u5f8c\u9000\u3057\u3066\u3044\u308b<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-258b847d\">\u30c7\u30d0\u30a4\u30b9B\u304cRX LOS\u3092\u30a2\u30b5\u30fc\u30c8\u3057\u305f\u5834\u5408\u306f\u3001B\u306b\u5165\u308b\u306f\u305a\u306e\u5149\u65b9\u5411\u304b\u3089\u51e6\u7406\u3092\u958b\u59cb\u3059\u308b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8332752b\"><strong>A TX \u2192 A \u30b3\u30cd\u30af\u30bf \u2192 \u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u7d4c\u8def \u2192 B \u30b3\u30cd\u30af\u30bf \u2192 B RX<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-96271753\">\u8003\u3048\u3089\u308c\u308b\u539f\u56e0\u3068\u3057\u3066\u306f\u3001A\u5074\u306e\u9001\u4fe1\u6a5f\u306e\u7121\u52b9\u5316\u307e\u305f\u306f\u6545\u969c\u3001\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9\u6975\u6027\u306e\u9006\u8ee2\u3001\u30b3\u30cd\u30af\u30bf\u306e\u63a5\u7d9a\u4e0d\u826f\u307e\u305f\u306f\u6c5a\u67d3\u3001\u904e\u5927\u306a\u4f1d\u9001\u640d\u5931\u3001\u4e0d\u9069\u5207\u306a\u30d5\u30a1\u30a4\u30d0\u30fc\u7a2e\u5225\u3001\u4e92\u63db\u6027\u306e\u306a\u3044\u6ce2\u9577\u307e\u305f\u306fPMD\u3001\u8aa4\u3063\u305fBiDi A\/B\u30da\u30a2\u3001\u3042\u308b\u3044\u306fB\u5074\u306e\u53d7\u4fe1\u6a5f\u306e\u554f\u984c\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002RX LOS\u306f\u65b9\u5411\u3092\u7d5e\u308a\u8fbc\u3080\u3082\u306e\u3067\u3042\u308a\u3001\u7279\u5b9a\u306e\u6545\u969c\u90e8\u54c1\u3092\u7279\u5b9a\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1b834363\">\u53cd\u5bfe\u65b9\u5411\u306b\u3064\u3044\u3066\u306f\u5225\u9014\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002A\u304b\u3089B\u3078\u306e\u901a\u4fe1\u306f\u901a\u5e38\u901a\u308a\u884c\u308f\u308c\u3066\u3044\u308b\u4e00\u65b9\u3067\u3001B\u304b\u3089A\u3078\u306e\u901a\u4fe1\u306f\u4e00\u5207\u5c4a\u304b\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30ea\u30f3\u30af\u30c0\u30a6\u30f3\u30a2\u30a4\u30b3\u30f3\u304c1\u3064\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3060\u3051\u3067\u306f\u3001\u3053\u3046\u3057\u305f\u901a\u4fe1\u65b9\u5411\u306e\u9055\u3044\u304c\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-36b41886\">\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9\u63a5\u7d9a\u306e\u5834\u5408\u3001\u5404\u9001\u4fe1\u6a5f\u304b\u3089\u306e\u4fe1\u53f7\u304c\u53cd\u5bfe\u5074\u306e\u53d7\u4fe1\u6a5f\u306b\u78ba\u5b9f\u306b\u5230\u9054\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b7\u30f3\u30b0\u30eb\u30d5\u30a1\u30a4\u30d0\u30fcBiDi\u306e\u5834\u5408\u3001\u9001\u4fe1\u6ce2\u9577\u3068\u53d7\u4fe1\u6ce2\u9577\u304c\u4e92\u3044\u306b\u88dc\u5b8c\u95a2\u4fc2\u306b\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u540c\u3058\u65b9\u5411\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304c2\u3064\u3042\u308b\u69cb\u6210\u306f\u3001\u901a\u5e38\u306e\u30da\u30a2\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-773f86cd\">TX\u969c\u5bb3\u306f\u9001\u4fe1\u6a5f\u5074\u306b\u9650\u5b9a\u3055\u308c\u3066\u3044\u308b<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b18959a0\">\u30c7\u30d0\u30a4\u30b9B\u3067TX Fault\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u307e\u305aB\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3001\u305d\u306e\u30db\u30b9\u30c8\u304c\u9001\u4fe1\u6a5f\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3057\u5236\u5fa1\u3059\u308b\u65b9\u6cd5\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u304f\u3060\u3055\u3044\u3002\u30db\u30b9\u30c8\u304c\u610f\u56f3\u7684\u306bTX Disable\u3092\u30a2\u30b5\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u304b\u3001\u521d\u671f\u5316\u5f8c\u306e\u8a3a\u65ad\u30c7\u30fc\u30bf\u304c\u6709\u52b9\u304b\u3001\u307e\u305f\u305d\u306e\u7279\u5b9a\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u304a\u3044\u3066\u96fb\u5727\u3001\u6e29\u5ea6\u3001\u305d\u306e\u4ed6\u306e\u9001\u4fe1\u6a5f\u306b\u95a2\u3059\u308b\u8b66\u544a\u306b\u7570\u5e38\u304c\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-de56146d\">\u300cTX Disable\u300d\u3068\u300cTX Fault\u300d\u306f\u7570\u306a\u308b\u4fe1\u53f7\u3067\u3059\u3002\u300cTX Disable\u300d\u306f\u3001\u9001\u4fe1\u6a5f\u3092\u30aa\u30d5\u306b\u3059\u308b\u30db\u30b9\u30c8\u304b\u3089\u30e2\u30b8\u30e5\u30fc\u30eb\u3078\u306e\u5236\u5fa1\u4fe1\u53f7\u3067\u3059\u3002\u300cTX Fault\u300d\u306f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089\u30db\u30b9\u30c8\u3078\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u4fe1\u53f7\u3067\u3059\u3002\u9001\u4fe1\u6a5f\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u9001\u4fe1\u6a5f\u306b\u969c\u5bb3\u304c\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u9060\u7aef\u3067\u300cRX LOS\u300d\u304c\u5831\u544a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a94df145\">DDM\u304c\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u306f\u3001TX\u30d5\u30a9\u30eb\u30c8\u3092\u3001\u540c\u3058\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u6642\u70b9\u306e\u6e29\u5ea6\u3001\u4f9b\u7d66\u96fb\u5727\u3001TX\u30d0\u30a4\u30a2\u30b9\u3001\u304a\u3088\u3073TX\u51fa\u529b\u96fb\u529b\u3068\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002LuLeey\u306e <a href=\"https:\/\/www.luleey.com\/ja\/sfp-tx-bias-current-high-causes-and-fixes\/\">SFP TX\u30d0\u30a4\u30a2\u30b9\u96fb\u6d41\u30ac\u30a4\u30c9<\/a> \u30d0\u30a4\u30a2\u30b9\u8b66\u544a\u3001\u9001\u4fe1\u96fb\u529b\u306e\u4f4e\u4e0b\u3001\u304a\u3088\u3073\u9001\u4fe1\u969c\u5bb3\u304c\u540c\u6642\u306b\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u305d\u308c\u3089\u304c\u5358\u72ec\u306e\u5024\u3088\u308a\u3082\u591a\u304f\u306e\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d768143c\">\u30d5\u30e9\u30b0\u3092\u30af\u30ea\u30a2\u3059\u308b\u305f\u3081\u3060\u3051\u306b\u3001\u672c\u756a\u7528\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u7e70\u308a\u8fd4\u3057\u30ea\u30bb\u30c3\u30c8\u3057\u305f\u308a\u3001\u30db\u30c3\u30c8\u30d7\u30e9\u30b0\u3057\u305f\u308a\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30db\u30b9\u30c8\u304a\u3088\u3073\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u624b\u9806\u306b\u5f93\u3044\u3001\u5143\u306e\u8a3c\u62e0\u3092\u4fdd\u6301\u3057\u305f\u4e0a\u3067\u3001\u627f\u8a8d\u3055\u308c\u305f\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6642\u9593\u5e2f\u3092\u5229\u7528\u3057\u3066\u4f5c\u696d\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-b479039e\">RX LOS\u306fRX\u30d1\u30ef\u30fc\u30a2\u30e9\u30fc\u30e0\u3068\u306f\u7570\u306a\u308a\u307e\u3059<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1c6fdc12\"><a href=\"https:\/\/members.snia.org\/document\/dl\/25916\" target=\"_blank\" rel=\"noopener\">SFF-8472 Rev 12.5a<\/a> \u6e29\u5ea6\u3001\u96fb\u5727\u3001\u9001\u4fe1\u30d0\u30a4\u30a2\u30b9\u3001\u9001\u4fe1\u96fb\u529b\u3001\u304a\u3088\u3073\u53d7\u4fe1\u5149\u30d1\u30ef\u30fc\u306b\u95a2\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30a2\u30e9\u30fc\u30e0\u304a\u3088\u3073\u8b66\u544a\u30d5\u30e9\u30b0\u3068\u306f\u5225\u306b\u3001\u30c7\u30b8\u30bf\u30eb\u9001\u4fe1\uff08TX\uff09\u30d5\u30a9\u30fc\u30eb\u30c8\u304a\u3088\u3073\u53d7\u4fe1\uff08RX\uff09LOS\u72b6\u614b\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30bd\u30d5\u30c8\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3082\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-16f56dd5\">\u305d\u306e\u9055\u3044\u306f\u91cd\u8981\u3060\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>RX LOS<\/code> \u3053\u308c\u306f\u4fe1\u53f7\u306e\u72b6\u614b\u3092\u793a\u3059\u3082\u306e\u3067\u3059\u3002.<\/li>\n\n\n\n<li><code>RX \u96fb\u529b\u4f4e\u4e0b\u8b66\u544a<\/code> \u76e3\u8996\u5bfe\u8c61\u306e\u5024\u3092\u3001\u8a2d\u5b9a\u3055\u308c\u305f\u8b66\u544a\u95be\u5024\u3068\u6bd4\u8f03\u3057\u307e\u3059\u3002.<\/li>\n\n\n\n<li><code>RX\u96fb\u6e90\u4f4e\u96fb\u5727\u30a2\u30e9\u30fc\u30e0<\/code> \u3088\u308a\u6df1\u523b\u306a\u3057\u304d\u3044\u5024\u30d5\u30e9\u30b0\u3067\u3059\u3002.<\/li>\n\n\n\n<li>\u8868\u793a\u3055\u308c\u308bdBm\u5024\u306f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u3054\u3068\u306b\u7570\u306a\u308b\u7cbe\u5ea6\u3068\u5831\u544a\u65b9\u6cd5\u306b\u57fa\u3065\u304f\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3055\u308c\u305f\u8a3a\u65ad\u5024\u3067\u3059\u3002.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d7abb9a3\">\u3057\u304d\u3044\u5024\u3084\u52d5\u4f5c\u304c\u5fc5\u305a\u3057\u3082\u540c\u4e00\u3067\u3042\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u9078\u629e\u3055\u308c\u305fPMD\u304a\u3088\u3073\u30ec\u30fc\u30c8\u306b\u5bfe\u3057\u3066\u8a31\u5bb9\u53ef\u80fd\u306a\u4fe1\u53f7\u3068\u3057\u3066\u8a8d\u8b58\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u53d7\u4fe1\u96fb\u529b\u3092\u5831\u544a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u9006\u306b\u3001\u30db\u30b9\u30c8\u306f\u3001\u5185\u90e8\u3067\u7269\u7406\u30b9\u30c6\u30fc\u30bf\u30b9\u30d4\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u30bd\u30d5\u30c8RX LOS\u3092\u5916\u90e8\u306b\u516c\u958b\u3057\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-91948d7c\">LuLeey\u2019s\u3092\u4f7f\u3063\u3066 <a href=\"https:\/\/www.luleey.com\/ja\/what-is-ddm-dom-in-sfp-transceivers\/\">DDM\/DOM \u30d5\u30a3\u30fc\u30eb\u30c9\u30ac\u30a4\u30c9<\/a> \u5b8c\u5168\u306a\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u540c\u3058\u65b9\u5411\u306b\u304a\u3051\u308b\u30ed\u30fc\u30ab\u30eb\u5074\u306e\u9001\u4fe1\u96fb\u529b\u3068\u30ea\u30e2\u30fc\u30c8\u5074\u306e\u53d7\u4fe1\u96fb\u529b\u3092\u6bd4\u8f03\u3057\u3001\u305d\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u6b63\u78ba\u306a\u52d5\u4f5c\u7bc4\u56f2\u306e\u6700\u5c0f\u5024\u3068\u6700\u5927\u5024\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u666e\u904d\u7684\u306b\u300c\u9069\u5207\u300d\u3068\u8a00\u3048\u308bdBm\u5024\u3068\u3044\u3046\u3082\u306e\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<div class=\"wp-block-wd-image wd-block-image wd-ab588b48\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" class=\"wp-image-22363\" src=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow.png\" alt=\"\" title=\"\" srcset=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow.png 1000w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow-800x800.png 800w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow-400x400.png 400w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow-768x768.png 768w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow-12x12.png 12w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/09\/sfp-rx-los-tx-fault-workflow-150x150.png 150w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-4af6aad6\">\u5236\u5fa1\u3055\u308c\u305f\u53d7\u4fe1LOS\u304a\u3088\u3073\u9001\u4fe1\u969c\u5bb3\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-121a61f3\">1. \u8a2d\u5b9a\u5185\u5bb9\u3092\u6b63\u78ba\u306b\u8a18\u9332\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c974b8bc\">\u30db\u30b9\u30c8\u30e2\u30c7\u30eb\u3068\u30dd\u30fc\u30c8\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u304a\u3088\u3073\u30c9\u30e9\u30a4\u30d0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u90e8\u54c1\u756a\u53f7\u3068\u30ea\u30d3\u30b8\u30e7\u30f3\u3001\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u5149PMD\u3001\u8a2d\u5b9a\u307e\u305f\u306f\u30cd\u30b4\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u3055\u308c\u305f\u4f1d\u9001\u901f\u5ea6\u3001FEC\u3001\u304a\u3088\u3073\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u3092\u3059\u3079\u3066\u4fdd\u5b58\u3057\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u4e21\u7aef\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u3001DDM\u5024\u3001\u30ea\u30f3\u30af\u30a4\u30d9\u30f3\u30c8\u3001\u304a\u3088\u3073\u30a8\u30e9\u30fc\u30ab\u30a6\u30f3\u30bf\u3092\u8a18\u9332\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-24c33d1f\">SFP\u3001SFP+\u3001\u307e\u305f\u306fSFP28\u3068\u3044\u3046\u30e9\u30d9\u30eb\u306f\u3001\u4e92\u63db\u6027\u3092\u793a\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u7269\u7406\u7684\u306a\u9069\u5408\u6027\u3001\u30db\u30b9\u30c8\u306eSerDes\u30e2\u30fc\u30c9\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u5b9f\u969b\u306e\u52d5\u4f5c\u901f\u5ea6\u3001\u304a\u3088\u3073\u5229\u7528\u53ef\u80fd\u306a\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u306f\u3001\u305d\u308c\u305e\u308c\u5225\u500b\u306e\u8981\u7d20\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ba2b92a9\">2. \u30e9\u30d9\u30eb\u3068\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d20cf8c9\">\u306e\u6b63\u78ba\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5b9a\u7fa9\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <code>RX LOS<\/code>, <code>\u4fe1\u53f7\u691c\u51fa<\/code>, <code>RX \u969c\u5bb3<\/code>, <code>TX \u30d5\u30a9\u30fc\u30eb\u30c8<\/code> \u305d\u3057\u3066 <code>TX \u7121\u52b9<\/code>. \u8d77\u52d5\u5f8c\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u6709\u52b9\u306a\u30c7\u30fc\u30bf\u3092\u5831\u544a\u3059\u308b\u307e\u3067\u5f85\u3061\u3001\u305d\u306e\u5f8c\u30012\u56de\u76ee\u306e\u8aad\u307f\u53d6\u308a\u3092\u884c\u3063\u3066\u3001\u72b6\u614b\u304c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f4e7bc18\">\u6c7a\u3057\u3066\uff5e\u3068\u601d\u3044\u8fbc\u307e\u306a\u3044\u3067\u304f\u3060\u3055\u3044 <code>1<\/code> \u5e38\u306b\u300c\u5065\u5168\u300d\u3092\u610f\u5473\u3059\u308b\u3001\u3042\u308b\u3044\u306f\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u306e\u7dd1\u8272\u306e\u30a2\u30a4\u30b3\u30f3\u304c\u5b9f\u969b\u306e\u72b6\u614b\u3088\u308a\u3082\u512a\u5148\u3055\u308c\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-6acf6eef\">3. \u4e21\u65b9\u5411\u3092\u5730\u56f3\u306b\u8868\u793a\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-052bc45f\">\u30ea\u30f3\u30af\u30922\u3064\u306e\u30d1\u30b9\u306b\u5206\u3051\u3066\u8a18\u8ff0\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A\uff08\u9001\u4fe1\uff09\u2192 B\uff08\u53d7\u4fe1\uff09<\/strong><\/li>\n\n\n\n<li><strong>B TX \u2192 A RX<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-39258fdd\">B\u3067\u53d7\u4fe1LOS\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6700\u521d\u306e\u7d4c\u8def\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002B\u3067\u9001\u4fe1\u969c\u5bb3\u304c\u767a\u751f\u3057\u3001A\u3067\u53d7\u4fe1LOS\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u308c\u30892\u3064\u306e\u89b3\u6e2c\u7d50\u679c\u306f <strong>B TX \u2192 A RX<\/strong> \u3053\u306e\u65b9\u5411\u6027\u3092\u8e0f\u307e\u3048\u3001B\u5074\u306e\u9001\u4fe1\u5074\u3092\u3088\u308a\u6709\u529b\u306a\u539f\u56e0\u5019\u88dc\u3068\u898b\u306a\u3059\u3002\u305f\u3060\u3057\u3001\u30db\u30b9\u30c8\u5074\u306e\u96fb\u6e90\u3001TX\u7121\u52b9\u5316\u3001\u3042\u308b\u3044\u306f\u5225\u306e\u969c\u5bb3\u306e\u53ef\u80fd\u6027\u306b\u3064\u3044\u3066\u306f\u3001\u4f9d\u7136\u3068\u3057\u3066\u6392\u9664\u3057\u3066\u3044\u306a\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-be76f0b7\">4. \u5149\u5b66\u7684\u306a\u6574\u5408\u6027\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6029bfdf\">\u4f1d\u9001\u901f\u5ea6\u3068PMD\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u30ab\u30c6\u30b4\u30ea\u3001\u6ce2\u9577\u3001\u30b3\u30cd\u30af\u30bf\u306e\u30d5\u30a1\u30df\u30ea\u30fc\u3068\u7814\u78e8\u72b6\u614b\u3001\u30c7\u30e5\u30d7\u30ec\u30c3\u30af\u30b9\u306e\u6975\u6027\u307e\u305f\u306fBiDi\u306e\u30da\u30a2\u30ea\u30f3\u30b0\u3001\u304a\u3088\u3073\u5404\u65b9\u5411\u306e\u53d7\u4fe1\u96fb\u529b\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5358\u306b\u30b3\u30cd\u30af\u30bf\u304c\u9069\u5408\u3059\u308b\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cea0e60b\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6240\u6709\u8005\u304c\u627f\u8a8d\u3057\u305f\u624b\u9806\u306b\u5f93\u3063\u3066\u3001\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u30b3\u30cd\u30af\u30bf\u3092\u70b9\u691c\u30fb\u6e05\u6383\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e <a href=\"https:\/\/foa.org\/tech\/ref\/testing\/test\/scope.html\" target=\"_blank\" rel=\"noopener\">\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u5354\u4f1a \u30b3\u30cd\u30af\u30bf\u30ac\u30a4\u30c9<\/a> \u6c5a\u67d3\u304c\u640d\u5931\u3084\u53cd\u5c04\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u5d4c\u5408\u3057\u305f\u30d5\u30a7\u30eb\u30fc\u30eb\u9593\u3067\u4f1d\u64ad\u3059\u308b\u4ed5\u7d44\u307f\u3092\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30d0\u30fc\u3084\u5149\u30dd\u30fc\u30c8\u306e\u5185\u90e8\u3092\u76f4\u63a5\u8997\u304d\u8fbc\u307e\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u9069\u5207\u306a\u30d1\u30ef\u30fc\u30e1\u30fc\u30bf\u30fc\u3084\u30d3\u30c7\u30aa\u691c\u67fb\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-59a1521d\">5. 1\u3064\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5206\u96e2\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-af1656ae\">\u627f\u8a8d\u3055\u308c\u305f\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6642\u9593\u5e2f\u306b\u3001\u6b63\u5e38\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u6e08\u307f\u3067\u3001\u4ed5\u69d8\u304c\u6b63\u3057\u3044\u30d1\u30c3\u30c1\u30b3\u30fc\u30c9\u307e\u305f\u306f\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u4ea4\u63db\u3057\u3001\u540c\u3058\u89b3\u5bdf\u624b\u9806\u3092\u7e70\u308a\u8fd4\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u969c\u5bb3\u304c\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u306e\u30dd\u30fc\u30c8\u9593\u30921\u3064\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u9650\u5b9a\u3057\u3066\u767a\u751f\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u539f\u56e0\u3067\u3042\u308b\u3068\u3044\u3046\u4eee\u8aac\u304c\u88cf\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002RX LOS\u304c\u7279\u5b9a\u306e\u30d5\u30a1\u30a4\u30d0\u30fc\u65b9\u5411\u306b\u9650\u5b9a\u3057\u3066\u767a\u751f\u3059\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u7d4c\u8def\u3092\u70b9\u691c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7279\u5b9a\u306e\u30db\u30b9\u30c8\u30dd\u30fc\u30c8\u306b\u9650\u5b9a\u3057\u3066\u767a\u751f\u3059\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30db\u30b9\u30c8\u3068\u8a2d\u5b9a\u3092\u8abf\u67fb\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f8dcf4e9\">\u30ed\u30fc\u30ab\u30eb\u30eb\u30fc\u30d7\u30d0\u30c3\u30af\u306f\u30ed\u30fc\u30ab\u30eb\u30d1\u30b9\u3092\u77ed\u7e2e\u3067\u304d\u307e\u3059\u304c\u3001PMD\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u3001\u30b3\u30cd\u30af\u30bf\u3001\u304a\u3088\u3073\u53d7\u4fe1\u6a5f\u306e\u51fa\u529b\u3092\u4e00\u81f4\u3055\u305b\u305f\u5834\u5408\u306b\u9650\u3089\u308c\u307e\u3059\u3002LuLeey\u306e <a href=\"https:\/\/www.luleey.com\/ja\/how-to-test-an-sfp-port-with-a-fiber-loopback\/\">\u30d5\u30a1\u30a4\u30d0\u30fb\u30eb\u30fc\u30d7\u30d0\u30c3\u30af\u8a66\u9a13\u30ac\u30a4\u30c9<\/a> \u305d\u306e\u9650\u754c\u306b\u3064\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u8aac\u660e\u3057\u3066\u3044\u308b\u3002\u6b63\u5e38\u306b\u52d5\u4f5c\u3059\u308b\u30eb\u30fc\u30d7\u3067\u306f\u3001\u672c\u7dda\u3084\u9060\u7aef\u306e\u76f8\u624b\u5148\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u305a\u3001\u307e\u305f\u3001\u30d1\u30c3\u30b7\u30d6\u306a\u30bb\u30eb\u30d5\u30eb\u30fc\u30d7\u306f\u3001\u76f8\u88dc\u6ce2\u9577\u306eBiDi\u5149\u5b66\u90e8\u54c1\u306b\u5bfe\u3059\u308b\u6709\u52b9\u306a\u4e00\u822c\u7684\u306a\u30c6\u30b9\u30c8\u3068\u306f\u306a\u3089\u306a\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-eca936c6\">6. \u30b9\u30c6\u30fc\u30bf\u30b9\u3060\u3051\u3067\u306a\u304f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3082\u691c\u8a3c\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f165184f\">\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u30af\u30ea\u30a2\u3055\u308c\u305f\u5f8c\u3001\u53cc\u65b9\u5411\u306b\u304a\u3051\u308b\u5b89\u5b9a\u3057\u305f\u30ea\u30f3\u30af\u72b6\u614b\u3001\u5b9f\u969b\u306e\u8ee2\u9001\u30ec\u30fc\u30c8\u3001\u304a\u3088\u3073\u65b0\u3057\u3044\u30ab\u30a6\u30f3\u30bf\u306e\u5897\u5206\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002RX LOS\u304c\u30af\u30ea\u30a2\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u5358\u306b\u3053\u306e\u7279\u5b9a\u306e\u640d\u5931\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u304c\u30a2\u30b5\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u306b\u904e\u304e\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u30a4\u30fc\u30b5\u30cd\u30c3\u30c8\u30d5\u30ec\u30fc\u30e0\u304c\u6b63\u5e38\u3067\u3042\u308b\u3053\u3068\u3001\u3042\u308b\u3044\u306f\u671f\u5f85\u3055\u308c\u308b\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u304c\u78ba\u4fdd\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2d5d1d13\">\u30ea\u30f3\u30af\u306f\u78ba\u7acb\u3055\u308c\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001FCS\/CRC\u30a8\u30e9\u30fc\u304c\u5897\u52a0\u3059\u308b\u5834\u5408\u306f\u3001LuLeey\u306e\u65b9\u6cd5\u3092\u7d9a\u3051\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/www.luleey.com\/ja\/sfp-crc-errors-with-normal-rx-power-what-to-check\/\">SFP CRC \u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-72dab416\">\u907f\u3051\u308b\u3079\u304d\u3088\u304f\u3042\u308b\u9593\u9055\u3044<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u304cRX LOS\u3092\u5831\u544a\u3057\u305f\u3068\u3044\u3046\u7406\u7531\u3060\u3051\u3067\u3001B\u306e\u53d7\u4fe1\u6a5f\u3092\u4ea4\u63db\u3059\u308b<\/li>\n\n\n\n<li>TX Disable \u3092 TX \u969c\u5bb3\u306e\u8a3c\u62e0\u3068\u3057\u3066\u6271\u3046<\/li>\n\n\n\n<li>\u3042\u308b\u5149\u65b9\u5411\u306b\u304a\u3051\u308b\u30ed\u30fc\u30ab\u30ebTX\u5024\u3068\u30ed\u30fc\u30ab\u30ebRX\u5024\u306e\u8aad\u307f\u53d6\u308a<\/li>\n\n\n\n<li>\u4e21\u65b9\u306e\u5149\u5b66\u90e8\u54c1\u3068\u4e21\u65b9\u306e\u30d1\u30c3\u30c1\u30b1\u30fc\u30d6\u30eb\u3092\u4e00\u5ea6\u306b\u4ea4\u63db\u3059\u308b<\/li>\n\n\n\n<li>\u6b63\u78ba\u306a\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306e\u6570\u5024\u3067\u306f\u306a\u304f\u3001\u4e00\u822c\u7684\u306a\u6ce2\u9577\u3084dBm\u306e\u57fa\u6e96\u3092\u7528\u3044\u308b<\/li>\n\n\n\n<li>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3084\u30ab\u30a6\u30f3\u30bf\u3092\u78ba\u8a8d\u305b\u305a\u306b\u3001\u30a2\u30e9\u30fc\u30e0\u304c\u89e3\u6d88\u3055\u308c\u305f\u3060\u3051\u3067\u6210\u529f\u3068\u307f\u306a\u3059\u3053\u3068<\/li>\n\n\n\n<li>\u30db\u30b9\u30c8\u5074\u306eSerDes\u3001\u8ee2\u9001\u30ec\u30fc\u30c8\u3001FEC\u3001\u7b26\u53f7\u5316\u65b9\u5f0f\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u3001\u304a\u3088\u3073\u30dd\u30fc\u30c8\u8a2d\u5b9a\u3092\u7121\u8996\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5795d495\">\u3053\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306f\u3001PON\u767b\u9332\u30ac\u30a4\u30c9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u30022.5G PON ONU\u30b9\u30c6\u30a3\u30c3\u30af\u306b\u306fONU\u30ed\u30b8\u30c3\u30af\u304c\u642d\u8f09\u3055\u308c\u3066\u304a\u308a\u3001\u30db\u30b9\u30c8\u3068\u3057\u3066\u306e\u52d5\u4f5c\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 1G\/10G SFP+\u30db\u30b9\u30c8\u304c1G\u3067\u3053\u308c\u3092\u4f1d\u9001\u3067\u304d\u308b\u306e\u306f\u3001\u30b9\u30c6\u30a3\u30c3\u30af\u3068\u30db\u30b9\u30c8\u306e\u4e21\u65b9\u304c\u4e92\u63db\u6027\u306e\u3042\u308b1G\u30e2\u30fc\u30c9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u9650\u3089\u308c\u307e\u3059\u3002\u4e00\u90e8\u306eSFP+\u30dd\u30fc\u30c8\u3067\u306f\u3001\u9069\u5207\u306a\u30c1\u30c3\u30d7\u30bb\u30c3\u30c8\/PHY\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u307e\u305f\u306f\u30c9\u30e9\u30a4\u30d0\u3001\u30dd\u30fc\u30c8\u8a2d\u5b9a\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u304a\u3088\u3073\u30b9\u30c6\u30a3\u30c3\u30af\u306e\u30db\u30b9\u30c8\u30e2\u30fc\u30c9\u304c\u63c3\u3063\u3066\u521d\u3081\u30662.5G\u3092\u30b5\u30dd\u30fc\u30c8\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-4454f2f7\">LuLeey Equipment\u306e\u6d3b\u7528\u30b7\u30fc\u30f3<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9a4475c4\">\u5236\u5fa1\u3055\u308c\u305f\u5c40\u6240\u30de\u30eb\u30c1\u30e2\u30fc\u30c9\u8a66\u9a13\u306b\u3064\u3044\u3066\u306f\u3001LuLeey\u306e <a href=\"https:\/\/www.luleey.com\/ja\/product\/fiber-optic-loopback-lc-upc-om3-mm\/\">LC\/UPC OM3 \u30d5\u30a1\u30a4\u30d0\u30fc\u30fb\u30eb\u30fc\u30d7\u30d0\u30c3\u30af<\/a> \u3053\u306e\u30da\u30fc\u30b8\u306b\u306f\u300150\/125 \u00b5m\u30de\u30eb\u30c1\u30e2\u30fc\u30c9\u7d4c\u8def\u3001LC\/UPC\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u304a\u3088\u30730.2 dB\u4ee5\u4e0b\u306e\u633f\u5165\u640d\u5931\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u4ed5\u69d8\u306f\u3001\u3053\u306e\u88fd\u54c1\u304c\u4e07\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u5024\u306f\u6700\u5927\u640d\u5931\u3067\u3042\u308a\u3001\u4fdd\u8b77\u6e1b\u8870\u91cf\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b7\u30e7\u30fc\u30c8\u30eb\u30fc\u30d7\u3092\u69cb\u6210\u3059\u308b\u524d\u306b\u3001\u6b63\u78ba\u306aPMD\u5024\u3068\u53d7\u4fe1\u6a5f\u306e\u6700\u5927\u5165\u529b\u5024\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-15a60686\">\u4ea4\u63db\u3084\u4e92\u63db\u6027\u306e\u78ba\u8a8d\u3092\u884c\u3046\u306b\u306f\u3001LuLeey\u306b\u5bfe\u3057\u3001\u4e21\u30db\u30b9\u30c8\u306e\u30e2\u30c7\u30eb\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u578b\u756a\u3068\u30ea\u30d3\u30b8\u30e7\u30f3\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u3001\u30dd\u30fc\u30c8\u30e2\u30fc\u30c9\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u304a\u3088\u3073\u30b3\u30cd\u30af\u30bf\u306e\u8a73\u7d30\u3001\u4e21\u7aef\u306eTX Fault\/RX LOS\/TX Disable\u306e\u72b6\u614b\u3001\u5b8c\u5168\u306aDDM\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3001\u30ea\u30f3\u30af\u30a4\u30d9\u30f3\u30c8\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3001\u304a\u3088\u3073\u30ab\u30a6\u30f3\u30bf\u306e\u5dee\u5206\u60c5\u5831\u3092\u9001\u4fe1\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30c7\u30d0\u30a4\u30b9B\u306b\u8868\u793a\u3055\u308c\u308b\u30b9\u30c6\u30fc\u30bf\u30b9\u3000\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u5831\u544a\u3057\u3066\u3044\u308b\u5185\u5bb9\u3000\u6700\u521d\u306b\u78ba\u8a8d\u3059\u3079\u304d\u70b9\u3000\u8a3c\u660e\u3055\u308c\u3066\u3044\u306a\u3044\u4e8b\u9805\u3000RX<\/p>","protected":false},"author":1,"featured_media":22362,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[886],"tags":[69,1680,1642,1669,1682,71,1681],"class_list":["post-22361","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network-maintenance","tag-sfp","tag-loss-of-signal","tag-network-maintenance","tag-optical-troubleshooting","tag-rx-los","tag-sfp-2","tag-tx-fault"],"_links":{"self":[{"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/posts\/22361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/comments?post=22361"}],"version-history":[{"count":1,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/posts\/22361\/revisions"}],"predecessor-version":[{"id":22372,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/posts\/22361\/revisions\/22372"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/media\/22362"}],"wp:attachment":[{"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/media?parent=22361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/categories?post=22361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luleey.com\/ja\/wp-json\/wp\/v2\/tags?post=22361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}