{"id":21867,"date":"2026-08-19T23:44:50","date_gmt":"2026-08-19T15:44:50","guid":{"rendered":"https:\/\/www.luleey.com\/?p=21867"},"modified":"2026-08-19T23:44:55","modified_gmt":"2026-08-19T15:44:55","slug":"db-vs-dbm-in-fiber-optics-a-simple-guide","status":"publish","type":"post","link":"https:\/\/www.luleey.com\/ko\/db-vs-dbm-in-fiber-optics-a-simple-guide\/","title":{"rendered":"\uad11\uc12c\uc720 \ubd84\uc57c\uc758 dB\uc640 dBm: \uac04\ub2e8\ud55c \uac00\uc774\ub4dc"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-8928cf07\">\ub9cc\uc57d \uc5b4\ub5a4 <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ko\/tag\/optical-power-meter\/\" title=\"\uad11 \ud30c\uc6cc \ubbf8\ud130\uc758 \ubaa8\ub4e0 \uac8c\uc2dc\ubb3c \ubcf4\uae30\">\uad11\ud559 \ud30c\uc6cc \ubbf8\ud130<\/a> \ubcf4\uc5ec\uc900\ub2e4 <strong>-8 <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ko\/tag\/db\/\" title=\"dB\uc758 \ubaa8\ub4e0 \uac8c\uc2dc\ubb3c \ubcf4\uae30\">dB<\/a>m<\/strong>, \ud558\uc9c0\ub9cc \ucee4\ub125\ud130\ub098 \uac10\uc1e0\uae30\uc758 \uc815\uaca9\uc740 <strong>dB<\/strong>, \uadf8 \ucc28\uc774\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1684c476\">\uc774\uac83\uc744 \uc774\ud574\ud558\ub294 \uac00\uc7a5 \uac04\ub2e8\ud55c \ubc29\ubc95\uc740 <strong>dB \ub300 <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ko\/tag\/dbm\/\" title=\"dBm\uc758 \ubaa8\ub4e0 \uac8c\uc2dc\ubb3c \ubcf4\uae30\">dBm<\/a> \uad11\uc12c\uc720 \ubd84\uc57c\uc5d0\uc11c<\/strong> \ub294:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>dBm\uc740 \uc2e4\uc81c <a style=\"color: #FF6A00;\" target=\"_blank\" href=\"https:\/\/www.luleey.com\/ko\/tag\/optical-power\/\" title=\"\u2018\uad11 \ucd9c\ub825\u2019 \uce74\ud14c\uace0\ub9ac\uc758 \ubaa8\ub4e0 \uac8c\uc2dc\ubb3c \ubcf4\uae30\">\uad11 \ucd9c\ub825<\/a> \ud55c\ub54c\ub294.<\/strong><\/li>\n\n\n\n<li><strong>dB\ub294 \ub450 \uc9c0\uc810 \uc0ac\uc774\uc5d0\uc11c \uc804\ub825\uc774 \uc5bc\ub9c8\ub098 \ubcc0\ud588\ub294\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3a5a37d2\">dBm\uc740 \ud0f1\ud06c\uc5d0 \ud604\uc7ac \ub4e4\uc5b4 \uc788\ub294 \ubb3c\uc758 \uc591\uc73c\ub85c \uc0dd\uac01\ud560 \uc218 \uc788\uc73c\uba70, dB\ub294 \uc720\uc785\uad6c\uc640 \uc720\ucd9c\uad6c \uc0ac\uc774\uc5d0\uc11c \uc5bc\ub9c8\ub098 \ub9ce\uc740 \ubb3c\uc774 \ube60\uc838\ub098\uac14\ub294\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0.png\" alt=\"\" class=\"wp-image-21868\" title=\"\" srcset=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0.png 1000w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0-800x800.png 800w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0-400x400.png 400w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0-768x768.png 768w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0-12x12.png 12w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/26e74c8526992597ec7ab0cb7c3bf4bc_content_idfile_00000000798081f697e7f69295a69d6dts496431pfscid1sig69e862bf06e78efe9563ca24c4c010dae96fe3451bde1549983315bee2fbf9c3v0-150x150.png 150w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-48ecefa0\">\uad11\uc12c\uc720 \ubd84\uc57c\uc5d0\uc11c dB\uc640 dBm\uc758 \uac04\ub7b5\ud55c \ube44\uad50<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\ub2e8\uc704<\/th><th>\uc124\uba85 \ub0b4\uc6a9<\/th><th>\uc77c\ubc18\uc801\uc778 \uc6a9\ub3c4<\/th><th>\uc608<\/th><\/tr><\/thead><tbody><tr><td>dBm<\/td><td>1 \ubc00\ub9ac\uc640\ud2b8\ub97c \uae30\uc900\uc73c\ub85c \ud55c \uc808\ub300 \uad11\ub825<\/td><td>\uc1a1\uc2e0 \uc804\ub825, \uc218\uc2e0 \uc804\ub825 \ubc0f \uc804\ub825\uacc4 \uce21\uc815\uac12<\/td><td>RX \ucd9c\ub825 = -8 dBm<\/td><\/tr><tr><td>dB<\/td><td>\ucd9c\ub825\ube44, \ubcc0\ud654, \uc99d\uac10<\/td><td>\ucf00\uc774\ube14 \uc190\uc2e4, \uc2a4\ud50c\ub9ac\ud130 \uc190\uc2e4 \ubc0f \uac10\uc1e0\uae30 \uac12<\/td><td>\ub9c1\ud06c \uc190\uc2e4 = 5 dB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8c14b9f7\">\ub2e4\uc74c\uacfc \uac19\uc740 \uac04\ub2e8\ud55c \uaddc\uce59\uc744 \uae30\uc5b5\ud574 \ub450\uc138\uc694:<\/p>\n\n\n\n<blockquote class=\"wp-block-wd-quote wd-quote wd-85bf1df2\">\n<p class=\"wp-block-wd-paragraph wd-ba1e7c1e\">\uc804\ub825\uc740 dBm \ub2e8\uc704\ub85c \uce21\uc815\ub429\ub2c8\ub2e4. \uc190\uc2e4\uc740 dB \ub2e8\uc704\ub85c \uce21\uc815\ub429\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-405de4c5\">\uadf8\ub9ac\uace0 <a href=\"https:\/\/www.thefoa.org\/tech\/ref\/testing\/test\/dB.html\" target=\"_blank\" rel=\"noopener\">\uad11\uc12c\uc720 \ud611\ud68c\uc758 \uc804\ub825 \uce21\uc815 \uac00\uc774\ub4dc<\/a> \uc774\uc640 \ub3d9\uc77c\ud55c \uc2e4\ubb34\uc0c1\uc758 \uad6c\ubd84\uc744 \uc81c\uc2dc\ud569\ub2c8\ub2e4. \uad11 \ud30c\uc6cc \ubbf8\ud130\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uae30\uc900\uac12\uc774 \uc124\uc815\ub41c \ud6c4 \ucd9c\ub825\uc744 dBm \ub2e8\uc704\ub85c, \uc0c1\ub300 \uc190\uc2e4\uc744 dB \ub2e8\uc704\ub85c \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-5e3cb943\">\uad11\uc12c\uc720 \ubd84\uc57c\uc5d0\uc11c dBm\uc740 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7785c676\">dBm\uc740 \ub2e4\uc74c\uc744 \uae30\uc900\uc73c\ub85c \ud55c \uc808\ub300 \uc804\ub825 \ub808\ubca8\uc785\ub2c8\ub2e4. <strong>1 \ubc00\ub9ac\uc640\ud2b8<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0 dBm = 1 mW<\/li>\n\n\n\n<li>-3 dBm \u2248 0.5 mW<\/li>\n\n\n\n<li>-10 dBm = 0.1 mW<\/li>\n\n\n\n<li>-20 dBm = 0.01 mW<\/li>\n\n\n\n<li>-30 dBm = 0.001 mW<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3a2e710b\">\uad11\uc12c\uc720 \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c\ub294 \uc74c\uc758 dBm \uac12\uc774 \uc815\uc0c1\uc785\ub2c8\ub2e4. \uc74c\uc218 \uae30\ud638\uac00 \uc788\ub2e4\uace0 \ud574\uc11c \ubc18\ub4dc\uc2dc \uc5f0\uacb0\uc5d0 \ubb38\uc81c\uac00 \uc788\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8a39f468\">\uc911\uc694\ud55c \uaddc\uce59\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<blockquote class=\"wp-block-wd-quote wd-quote wd-14350a07\">\n<p class=\"wp-block-wd-paragraph wd-df1a2eca\"><strong>dBm \uac12\uc774 \uc74c\uc218\uc77c\uc218\ub85d \uad11 \ucd9c\ub825\uc740 \ub0ae\uc544\uc9d1\ub2c8\ub2e4.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d2db2ce9\">\uc608\ub97c \ub4e4\uc5b4<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>-5 dBm\uc740 -15 dBm\ubcf4\ub2e4 \uc2e0\ud638 \uac15\ub3c4\uac00 \ub354 \uac15\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>-15 dBm\uc740 -25 dBm\ubcf4\ub2e4 \uc2e0\ud638 \uac15\ub3c4\uac00 \ub354 \uac15\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3cdbe8ab\">\ud558\uc9c0\ub9cc \ub354 \uac15\ub825\ud558\ub2e4\uace0 \ud574\uc11c \ud56d\uc0c1 \uc88b\uc740 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4. \uc2e0\ud638\uac00 \uac10\ub3c4 \ud55c\uacc4\uce58 \ubbf8\ub9cc\uc774\uba74 \uc218\uc2e0\uae30\uac00 \uc81c\ub300\ub85c \uc791\ub3d9\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\uc9c0\ub9cc, \uc2e0\ud638\uac00 \ucd5c\ub300 \uc785\ub825 \ub808\ubca8\uc744 \ucd08\uacfc\ud558\uba74 \uacfc\ubd80\ud558\uac00 \ubc1c\uc0dd\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8828de75\">\ubaa8\ub4e0 \uad11 \ub9c1\ud06c\uc5d0 \ub300\ud574 \ubcf4\ud3b8\uc801\uc73c\ub85c \uc801\uc6a9\ub418\ub294 \u201c\ucd5c\uc801\uc758 dBm \uac12\u201d\uc740 \uc5c6\uc2b5\ub2c8\ub2e4. \ud56d\uc0c1 \uce21\uc815\ub41c \uc804\ub825\uc744 \ud574\ub2f9 \ud2b8\ub79c\uc2dc\ubc84, ONU, ONT \ub610\ub294 \uc218\uc2e0\uae30\uc5d0 \uba85\uc2dc\ub41c \uc1a1\uc2e0(TX) \ub610\ub294 \uc218\uc2e0(RX) \ubc94\uc704\uc640 \ube44\uad50\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-df281d86\">\uad11\uc12c\uc720 \ubd84\uc57c\uc5d0\uc11c dB\ub294 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud558\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-10452741\">dB\ub294 \ub450 \uc804\ub825 \uc218\uc900 \uac04\uc758 \ube44\uc728\uc774\ub098 \ubcc0\ud654\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uae30\uc900\uac12\uc744 \uc54c\uc9c0 \ubabb\ud55c\ub2e4\uba74, dB\ub9cc\uc73c\ub85c\ub294 \uc2e4\uc81c \uad11\uc804\ub825\uc744 \uc54c \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fcac0a80\">\uc77c\ubc18\uc801\uc778 \uc608\ub85c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uac83\ub4e4\uc774 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uad11\uc12c\uc720 \uac10\uc1e0: 2 dB;<\/li>\n\n\n\n<li>\ucee4\ub125\ud130 \ubc0f \uc811\ud569 \uc190\uc2e4: 1 dB;<\/li>\n\n\n\n<li>\uc2a4\ud50c\ub9ac\ud130 \uc190\uc2e4: 7 dB;<\/li>\n\n\n\n<li>\uace0\uc815 \uac10\uc1e0\uae30: 5 dB;<\/li>\n\n\n\n<li>\uc99d\ud3ed\uae30 \uc774\ub4dd: 10 dB.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e79ff960\">\uc57d 3dB\uc758 \ubcc0\ud654\ub294 \uc190\uc2e4\uc778\uc9c0 \uc774\ub4dd\uc778\uc9c0\uc5d0 \ub530\ub77c \uc804\ub825\uc774 \uc808\ubc18\uc73c\ub85c \uc904\uc5b4\ub4e4\uac70\ub098 \ub450 \ubc30\ub85c \ub298\uc5b4\ub09c \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. 10dB\uc758 \uc190\uc2e4\uc740 \uc804\ub825\uc744 \uc6d0\ub798 \uc218\uc900\uc758 10\ubd84\uc758 1\ub85c \uac10\uc18c\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cd496afe\">\uc77c\ubc18\uc801\uc778 \ub9c1\ud06c \uc608\uc0b0 \uacc4\uc0b0\uc5d0\uc11c, \uad6c\uc131 \uc694\uc18c\uc758 \uc190\uc2e4\uc740 \ub300\uac1c \uc591\uc218\ub85c \ud45c\uae30\ub418\uba70 \ucd08\uae30 dBm \uac12\uc5d0\uc11c \ucc28\uac10\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-ca639e6d\">dBm \ubc0f dB \uac12\uc744 \ubc14\ud0d5\uc73c\ub85c \uc218\uc2e0 \uc804\ub825(RX Power)\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6a7e78f6\">\ub9c1\ud06c\uc5d0 \uc218\ub3d9 \uc190\uc2e4\ub9cc \ud3ec\ud568\ub418\uc5b4 \uc788\ub294 \uacbd\uc6b0, \ub2e4\uc74c\uc758 \uac04\ub2e8\ud55c \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-339c6351\"><strong>\uc608\uc0c1 \uc218\uc2e0 \uc804\ub825(dBm) = \uc1a1\uc2e0 \uc804\ub825(dBm) \u2212 \ucd1d \ub9c1\ud06c \uc190\uc2e4(dB)<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-c801700e\">\uc608<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b0fe7b50\">\uc1a1\uc2e0\uae30\uac00 \ub2e4\uc74c\uacfc \uac19\uc740 \ud2b9\uc131\uc744 \uac00\uc9c0\uace0 \uc788\ub2e4\uace0 \uac00\uc815\ud569\uc2dc\ub2e4:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-56809886\"><strong>TX \ucd9c\ub825 = -2 dBm<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-533965e4\">\uc774 \ub9c1\ud06c\uc5d0\ub294 \ub2e4\uc74c \ub0b4\uc6a9\uc774 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uad11\uc12c\uc720, \ucee4\ub125\ud130 \ubc0f \uc2a4\ud50c\ub77c\uc774\uc2a4: 3 dB \uc190\uc2e4;<\/li>\n\n\n\n<li>\uad11 \uac10\uc1e0\uae30: 3 dB \uc190\uc2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f53e06c\">\ucd1d \uc190\uc2e4:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3b1d0975\"><strong>3 dB + 3 dB = 6 dB<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-802ddb22\">\uc608\uc0c1 \uc218\uc2e0 \uc804\ub825:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-074441a0\"><strong>-2 dBm \u2212 6 dB = -8 dBm<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4319a548\">\ub530\ub77c\uc11c \uc218\uc2e0\uae30\ub294 \uc57d -8 dBm\uc744 \uac10\uc9c0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-74d3c48e\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0.png\" alt=\"\" class=\"wp-image-21869\" title=\"\" srcset=\"https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0.png 1000w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0-800x800.png 800w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0-400x400.png 400w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0-768x768.png 768w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0-12x12.png 12w, https:\/\/www.luleey.com\/wp-content\/uploads\/2026\/08\/d42e1ab1c39362866870cd28b099ec33_content_idfile_0000000079e081f694cefb4aba043e05ts496431pfscid1sig7ca68c12b6fee6e97cfd8b292d4a856d85bd4f62b384a53ddce6e8206b346a67v0-150x150.png 150w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c74c68e5\">\uc1a1\uc2e0\uae30 \ucd9c\ub825, \uc120\ub85c \uc190\uc2e4 \ubc0f \uacc4\uae30 \uc815\ud655\ub3c4 \ubaa8\ub450 \ud5c8\uc6a9 \uc624\ucc28\uac00 \uc788\uae30 \ub54c\ubb38\uc5d0 \uc2e4\uc81c \uce21\uc815\uac12\uc740 \uc774\uc640 \uc57d\uac04 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ebe7ffaa\">\uadf8\ub9ac\uace0 <a href=\"https:\/\/www.thefoa.org\/tech\/ref\/testing\/test\/loss-math.html\" target=\"_blank\" rel=\"noopener\">FOA\uc758 \uad11 \uc190\uc2e4 \uacc4\uc0b0 \ubc29\uc2dd\uc5d0 \ub300\ud55c \uc124\uba85<\/a> \ub610\ud55c 3dB\uac00 \ub300\ub7b5 2\ubc30\uc5d0 \ud574\ub2f9\ud558\uba70, \uad11 \ucd9c\ub825\uc774 \ub0ae\uc744\uc218\ub85d dBm \uc218\uce58\uac00 \ub354 \uc74c\uc758 \uac12\uc744 \ub764\ub2e4\ub294 \uac83\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. dBm\uacfc \ubc00\ub9ac\uc640\ud2b8 \ucd9c\ub825 \uac04\uc758 \uad00\uacc4\ub294 \ub2e4\uc74c \ubb38\ud5cc\uc5d0\ub3c4 \uae30\ub85d\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. <a href=\"https:\/\/www.itu.int\/epublications\/publication\/itu-t-g-650-2-2015-08-definitions-and-test-methods-for-statistical-and-non-linear-related-attributes-of-single-mode-fibre-and-cable\" target=\"_blank\" rel=\"noopener\">ITU-T G.650.2<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-7e4dd919\">\uad11 \ud30c\uc6cc \ubbf8\ud130\uc5d0\uc11c dB \ubc0f dBm\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0a6a821b\">\ub9ce\uc740 \uad11 \ud30c\uc6cc \ubbf8\ud130\ub294 dBm\uacfc dB\ub97c \ubaa8\ub450 \ud45c\uc2dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-6c1ac2ad\">\uc2e4\uc81c \uc804\ub825\uc744 \uce21\uc815\ud560 \ub54c\ub294 dBm\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9b563eac\">\ub2e4\uc74c \uc0ac\ud56d\uc744 \ud655\uc778\ud558\ub824\uba74 dBm\uc744 \uc120\ud0dd\ud558\uc138\uc694:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc1a1\uc2e0\uae30 \ucd9c\ub825 \uc804\ub825;<\/li>\n\n\n\n<li>\uc218\uc2e0\ub41c \uad11 \ucd9c\ub825;<\/li>\n\n\n\n<li>ONU \ub610\ub294 ONT \uc785\ub825 \uc804\ub825;<\/li>\n\n\n\n<li>SFP \ub610\ub294 SFP+ \uad11 \uc2e0\ud638 \ub808\ubca8;<\/li>\n\n\n\n<li>\uac10\uc1e0\uae30 \uc55e\uc774\ub098 \ub4a4\uc5d0 \uc804\uc6d0\uc744 \uc5f0\uacb0\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c1aab37b\">\uce21\uc815\ud560 \ud30c\uc7a5\uc5d0 \ub9de\ucdb0 \uacc4\uce21\uae30\ub97c \uc124\uc815\ud558\uc2ed\uc2dc\uc624. \uad11 \ud30c\uc6cc \ubbf8\ud130\ub294 \ud30c\uc7a5\uc5d0 \ub530\ub77c \ubcf4\uc815 \uac12\uc774 \ub2ec\ub77c\uc9c0\ubbc0\ub85c, \uc798\ubabb\ub41c \ud30c\uc7a5 \uc124\uc815\uc73c\ub85c \uce21\uc815\uac12\uc744 \uc77d\uc744 \uacbd\uc6b0 \uc815\ud655\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-e3fcd9bd\">dB\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0c1\ub300\uc801 \uc190\uc2e4\uc744 \uce21\uc815\ud569\ub2c8\ub2e4.<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-36780b64\">\uce21\uc815\uac12\uc744 \uae30\uc900\uac12\uacfc \ube44\uad50\ud558\ub824\uba74 dB\ub97c \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-dcac06d9\">\uc608\ub97c \ub4e4\uc5b4<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\uc815\uc0c1\uc778 \uac83\uc73c\ub85c \ud655\uc778\ub41c \uae30\uc900 \ucf00\uc774\ube14\uc744 \ud1b5\ud574 \uc2e0\ud638\uc6d0\uc744 \uce21\uc815\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\ud574\ub2f9 \uce21\uc815\uac12\uc744 \uae30\uc900\uac12 \ub610\ub294 0\uac12\uc73c\ub85c \uc124\uc815\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\ud14c\uc2a4\ud2b8 \ub300\uc0c1\uc778 \ucf00\uc774\ube14\uc774\ub098 \ubd80\ud488\uc744 \uc5f0\uacb0\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>dB \ub2e8\uc704\uc758 \ucd94\uac00 \uc190\uc2e4 \uac12\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3cf71e7e\">\uae30\uc900\uac12\uc740 \uc62c\ubc14\ub974\uac8c \uc124\uc815\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \uc720\ud6a8\ud55c \uae30\uc900\uac12\uc744 \uc124\uc815\ud558\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\uc5d0\uc11c \uacc4\uce21\uae30\ub97c dB \ubaa8\ub4dc\ub85c \uc804\ud658\ud55c\ub2e4\uace0 \ud574\uc11c \uc758\ubbf8 \uc788\ub294 \uc190\uc2e4 \uce21\uc815\uac12\uc774 \uc790\ub3d9\uc73c\ub85c \uc0b0\ucd9c\ub418\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-9eca08b0\">dB\ub97c dBm\uc73c\ub85c \uc9c1\uc811 \ubcc0\ud658\ud560 \uc218 \uc788\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0dad6b10\">\uc544\ub2c8\uc694. \uc2dc\uc791 \ud30c\uc6cc \ub808\ubca8\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9c693d5b\">\uc608\ub97c \ub4e4\uc5b4, 5 dB\uc758 \uc190\uc2e4\ub9cc\uc73c\ub85c\ub294 \ucd5c\uc885 dBm \uac12\uc744 \uc54c \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0 dBm\ubd80\ud130 \uc2dc\uc791\ud558\uba74: 0 dBm \u2212 5 dB = -5 dBm.<\/li>\n\n\n\n<li>-10 dBm\ubd80\ud130 \uc2dc\uc791\ud558\uc5ec: -10 dBm \u2212 5 dB = -15 dBm.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1b7bf74d\">\ucd08\uae30 \uc804\ub825\uc774 \uc11c\ub85c \ub2e4\ub974\uae30 \ub54c\ubb38\uc5d0, \ub3d9\uc77c\ud55c 5 dB\uc758 \uc190\uc2e4\uc774\ub77c\ub3c4 \ucd5c\uc885 \uc804\ub825 \uc218\uc900\uc740 \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-9d55f9a2\">\uad11 \uac10\uc1e0\uae30\ub294 dBm \uac12\uc744 \uc5b4\ub5bb\uac8c \ubcc0\ud654\uc2dc\ud0a4\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-245f2137\">\uad11 \uac10\uc1e0\uae30\ub294 \uc81c\uc5b4\ub41c \uc591\uc758 \uc190\uc2e4\uc744 \ubc1c\uc0dd\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3806f124\">\uce21\uc815\ub41c \uc804\ub825\uc774 -4 dBm\uc774\uace0 5 dB \uac10\uc1e0\uae30\ub97c \ucd94\uac00\ud558\uba74:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2626170a\"><strong>-4 dBm \u2212 5 dB = \ub300\ub7b5 -9 dBm<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0ca98cec\">\uc774 \uacc4\uc0b0\uc740 \uc218\uc2e0\uae30\uc758 \uc785\ub825 \uc804\ub825\uc744 \ucd5c\ub300 \uc785\ub825 \uc804\ub825 \uc774\ud558\ub85c \uc720\uc9c0\ud558\uae30 \uc704\ud574 \uac10\uc1e0\uae30\ub97c \uc120\ud0dd\ud560 \ub54c \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ec519971\">\uc778\ud130\ub137\uc5d0\uc11c \ucc3e\uc740 \ubaa9\ud45c \uc218\uce58\ub9cc \ubcf4\uace0 \uac10\uc1e0\uae30\ub97c \uc120\ud0dd\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uba3c\uc800 \ub2e4\uc74c \uc0ac\ud56d\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc2e4\uc81c \uce21\uc815\ub41c \uc804\ub825;<\/li>\n\n\n\n<li>\uc218\uc2e0\uae30 \uacfc\ubd80\ud558 \ud55c\uacc4;<\/li>\n\n\n\n<li>\uc218\uc2e0\uae30 \uac10\ub3c4;<\/li>\n\n\n\n<li>\uae30\uc874 \ub9c1\ud06c \uc190\uc2e4;<\/li>\n\n\n\n<li>\uac10\uc1e0\uae30\uc758 \ud30c\uc7a5 \ubc0f \ucee4\ub125\ud130 \uc720\ud615.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-900a94d0\">LuLeey\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc11c\ube44\uc2a4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. <a href=\"https:\/\/www.luleey.com\/ko\/product-category\/optical-connector\/optical-attenuator\/\">\uace0\uc815\ud615 \ubc0f \uac00\ubcc0\ud615 \uad11 \uac10\uc1e0\uae30<\/a> \ub2e4\uc591\ud55c \ucee4\ub125\ud130 \ubc0f \uc190\uc2e4 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub9de\ucdb0.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-7bf05686\">SFP DDM \uce21\uc815\uac12\uc744 \ud1b5\ud574 \ub9c1\ud06c \uc190\uc2e4\uc744 \uacc4\uc0b0\ud560 \uc218 \uc788\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7e889148\">\uac00\ub054\uc740 \uadf8\ub807\uc9c0\ub9cc, \uc62c\ubc14\ub978 \uac12\uc744 \uc0ac\uc6a9\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9afac66b\">\ud55c \uac00\uc9c0 \uc804\uc1a1 \ubc29\ud5a5\uc5d0 \ub300\ud574\uc11c\ub294 \ub2e4\uc74c\uc744 \ube44\uad50\ud574 \ubcf4\uc2ed\uc2dc\uc624:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0dbc5a1c\"><strong>\uc6d0\uaca9 \ubaa8\ub4c8 \uc1a1\uc2e0 \uc804\ub825 \u2192 \ub85c\uceec \ubaa8\ub4c8 \uc218\uc2e0 \uc804\ub825<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a5be7ae2\">\uc77c\ubc18\uc801\uc73c\ub85c \ub85c\uceec \ubaa8\ub4c8\uc758 \uc1a1\uc2e0(TX) \uc804\ub825\uc744 \uc218\uc2e0(RX) \uc804\ub825\uc5d0\uc11c \ube7c\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uc774 \ub450 \uce21\uc815\uac12\uc740 \uc11c\ub85c \ubc18\ub300 \ubc29\ud5a5\uc758 \uc804\uc1a1\uc744 \ub098\ud0c0\ub0b4\uba70, \uc11c\ub85c \ub2e4\ub978 \uad11\uc12c\uc720, \ucee4\ub125\ud130 \ub610\ub294 \uad11 \uacbd\ub85c\ub97c \ud1b5\ud574 \uc804\ub2ec\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8e9d29be\">DDM \uce21\uc815\uac12\uc5d0\ub3c4 \uc815\ud655\ub3c4 \ud55c\uacc4\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uce21\uc815\uac12\uc740 \ubaa8\ub2c8\ud130\ub9c1 \ubc0f \ubb38\uc81c \ud574\uacb0\uc5d0 \uc720\uc6a9\ud558\uc9c0\ub9cc, \uc815\uc2dd \uc190\uc2e4 \ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud560 \ub54c\ub294 \ubcc4\ub3c4\ub85c \uad50\uc815\ub41c \uad11 \ud30c\uc6cc \ubbf8\ud130\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ub354 \uc801\uc808\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-11072550\">\uc77d\uae30 <a>SFP \ud2b8\ub79c\uc2dc\ubc84\uc5d0\uc11c DDM\/DOM\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/a> \uc1a1\uc2e0 \uc804\ub825, \uc218\uc2e0 \uc804\ub825, \uc628\ub3c4 \ubc0f \uae30\ud0c0 \uc9c4\ub2e8 \uac12\uc5d0 \ub300\ud55c \uc124\uba85\uc740 \ub2e4\uc74c\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-d5b3f2b5\">dB\uc640 dBm\uc5d0 \uad00\ud55c \ud754\ud55c \uc624\ud574<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8a26ced3\">\uc2e4\uc218 1: -20 dBm\uc774 -5 dBm\ubcf4\ub2e4 \uc2e0\ud638\uac00 \ub354 \uac15\ud558\ub2e4\uace0 \uc0dd\uac01\ud558\ub294 \uac83<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a5157917\">\ub354 \uc57d\ud569\ub2c8\ub2e4. -20 dBm\uc740 -5 dBm\ubcf4\ub2e4 \uad11 \ucd9c\ub825\uc774 \ub354 \uc791\uc74c\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9f7a9a9e\">\uc2e4\uc218 2: dBm \uac12\uc5d0 \uc218\ub3d9 \uc190\uc2e4\uc744 \ub354\ud558\ub294 \uac83<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-060a95bc\">\uc218\ub3d9 \ub9c1\ud06c\ub85c \uc778\ud574 4 dB\uc758 \uc190\uc2e4\uc774 \ubc1c\uc0dd\ud558\uba74, \ucd08\uae30 dBm \uac12\uc5d0\uc11c 4 dB\ub97c \ube7c\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ff98e9f5\">\uc2e4\uc218 3: dB\ub97c \uc808\ub300\uc801\uc778 \uc74c\ub7c9 \uc218\uc900\uc73c\ub85c \uac04\uc8fc\ud558\ub294 \uac83<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0416e6ae\">5 dB\uc640 \uac19\uc740 \uc218\uce58\ub294 \ubcc0\ud654\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ucd08\uae30 dBm \uac12\uc774 \uc8fc\uc5b4\uc9c0\uc9c0 \uc54a\ub294 \ud55c, \uc774 \uc218\uce58\ub9cc\uc73c\ub85c\ub294 \ucd5c\uc885 \uad11\ucd9c\ub825\uc744 \uc54c \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a32825b4\">\uc2e4\uc218 4: \ubcf4\ud3b8\uc801\uc73c\ub85c \uc801\uc6a9 \uac00\ub2a5\ud55c \ub2e8\uc77c RX \uac12\uc744 \ucc3e\uc73c\ub824\ub294 \uac83<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9c4387ca\">GPON, XGS-PON, SFP, SFP+ \ubc0f \uc7a5\uac70\ub9ac \uad11 \uc218\uc2e0\uae30\ub9c8\ub2e4 \uc0ac\uc6a9\ud558\ub294 \uc804\ub825 \ubc94\uc704\uac00 \ub2e4\ub985\ub2c8\ub2e4. \uce21\uc815\uac12\uc744 \ud574\ub2f9 \uc7a5\ube44\uc758 \uc815\ud655\ud55c \uc0ac\uc591\uacfc \ube44\uad50\ud574 \ubcf4\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-15e7bb1a\">\uc2e4\uc218 5: \uc798\ubabb\ub41c \ud30c\uc7a5 \uc124\uc815 \uc0ac\uc6a9<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8ca2fb1a\">\uc2e0\ud638\uc5d0 \ub9de\ub294 \uce21\uc815 \ud30c\uc7a5\uc744 \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624. \uc2e4\uc2dc\uac04 PON \ud14c\uc2a4\ud2b8\uc758 \uacbd\uc6b0, \ud544\uc694\ud55c PON \ud30c\uc7a5\uacfc \uce21\uc815 \ubc29\ubc95\uc5d0 \ub9de\ucdb0 \uc124\uacc4\ub41c \uce21\uc815\uae30\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-55c112db\">\ucd5c\uc885 \ub2f5\ubcc0<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-05988c60\">\uad11\uc12c\uc720 \ubd84\uc57c\uc5d0\uc11c dB\uc640 dBm\uc758 \ucc28\uc774\ub294 \uac04\ub2e8\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>dBm = \ud2b9\uc815 \uc9c0\uc810\uc758 \uc2e4\uc81c \uad11 \ucd9c\ub825<\/strong><\/li>\n\n\n\n<li><strong>dB = \ub450 \uc9c0\uc810 \uac04\uc758 \uc804\ub825 \ubcc0\ud654, \uc774\ub4dd \ub610\ub294 \uc190\uc2e4<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6d6ddee5\">\uc218\uc2e0 \uc804\ub825\uc744 \ucd94\uc815\ud558\ub824\uba74, dBm \ub2e8\uc704\uc758 \uc1a1\uc2e0 \uc804\ub825\uc5d0\uc11c dB \ub2e8\uc704\uc758 \ub9c1\ud06c \uc190\uc2e4\uc744 \ube8d\ub2c8\ub2e4:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-60072b4f\"><strong>\uc1a1\uc2e0 \uc804\ub825(dBm) \u2212 \ub9c1\ud06c \uc190\uc2e4(dB) = \uc218\uc2e0 \uc804\ub825(dBm)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-34a79669\">\uc2e4\uc81c \uad11\uc12c\uc720 \ub9c1\ud06c\ub97c \ud14c\uc2a4\ud2b8\ud560 \ub54c\ub294 \uc62c\ubc14\ub978 \ud30c\uc7a5\uc744 \uc0ac\uc6a9\ud558\uace0, \uc190\uc2e4 \uce21\uc815\uc744 \uc704\ud55c \uc801\uc808\ud55c \uae30\uc900\uac12\uc744 \uc124\uc815\ud55c \ub2e4\uc74c, \ucd5c\uc885 \uce21\uc815\uac12\uc744 \uc218\uc2e0\uae30\uc758 \uc815\ud655\ud55c \uc0ac\uc591\uacfc \ube44\uad50\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0e4748cf\">\uad11 \ucd9c\ub825\uc774\ub098 \uc81c\uc5b4 \uac10\uc1e0\ub97c \uce21\uc815\ud574\uc57c \ud558\ub294 \uacbd\uc6b0, LuLeey\uc758 <a href=\"https:\/\/www.luleey.com\/ko\/product-category\/testers-and-tools\/optical-power-meter-and-visual-fault-locator\/\">\uad11 \ud30c\uc6cc \ubbf8\ud130<\/a> \uadf8\ub9ac\uace0 \uace0\uac1d\ub2d8\uc758 \ub9c1\ud06c\uc5d0 \ud544\uc694\ud55c \ucee4\ub125\ud130 \uc720\ud615, \ud30c\uc7a5 \ubc0f \uce21\uc815 \ubc94\uc704\uc5d0 \ub530\ub978 \uad11 \uac10\uc1e0\uae30.<\/p>","protected":false},"excerpt":{"rendered":"<p>\ub2e8\uc704  \uc758\ubbf8  \uc77c\ubc18\uc801\uc778 \uc6a9\ub3c4  \uc608\uc2dc  dBm  1 \ubc00\ub9ac\uc640\ud2b8\uc5d0 \ub300\ud55c \uc808\ub300 \uad11 \ucd9c\ub825, \uc1a1\uc2e0(TX) \uc804\ub825, \uc218\uc2e0(RX) \uc804\ub825 \ubc0f<\/p>","protected":false},"author":1,"featured_media":21870,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[886],"tags":[57,1424,1421,1422,1425,1423],"class_list":["post-21867","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network-maintenance","tag-optical-power-meter","tag-db","tag-dbm","tag-fiber-loss","tag-link-budget","tag-optical-power"],"_links":{"self":[{"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/posts\/21867","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/comments?post=21867"}],"version-history":[{"count":1,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/posts\/21867\/revisions"}],"predecessor-version":[{"id":21871,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/posts\/21867\/revisions\/21871"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/media\/21870"}],"wp:attachment":[{"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/media?parent=21867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/categories?post=21867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luleey.com\/ko\/wp-json\/wp\/v2\/tags?post=21867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}