{"version":"1.0","provider_name":"\u062e\u0628\u064a\u0631 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a","provider_url":"https:\/\/www.tfngj.com\/ar\/","author_name":"admin","author_url":"https:\/\/www.tfngj.com\/ar\/author\/admin\/","title":"How Does an OTDR Achieve PON Online Testing? - Communication Test Expert","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"RAofkxhIdC\"><a href=\"https:\/\/www.tfngj.com\/ar\/how-does-an-otdr-achieve-pon-online-testing\/\">\u0643\u064a\u0641 \u064a\u062d\u0642\u0642 \u0645\u0642\u064a\u0627\u0633 OTDR \u0627\u062e\u062a\u0628\u0627\u0631 PON \u0639\u0628\u0631 \u0627\u0644\u0625\u0646\u062a\u0631\u0646\u062a\u061f<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.tfngj.com\/ar\/how-does-an-otdr-achieve-pon-online-testing\/embed\/#?secret=RAofkxhIdC\" width=\"600\" height=\"338\" title=\"&#8220;How Does an OTDR Achieve PON Online Testing?&#8221; &#8212; Communication Test Expert\" data-secret=\"RAofkxhIdC\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.tfngj.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.tfngj.com\/wp-content\/uploads\/2025\/10\/fiber-4814456_640.jpg","thumbnail_width":640,"thumbnail_height":427,"description":"An optical time domain reflectometer (OTDR) is a sophisticated optoelectronic instrument that uses backscattering caused by Rayleigh scattering and Fresnel reflection in optical fibers. OTDRs are widely used for installation, maintenance, and troubleshooting of fiber optic networks. They can measure fiber length, transmission loss, connector loss, and locate faults along the fiber. Performing online PON [&hellip;]"}