{"product_id":"exfo-eui-91-sc-otdr-adapter-connector","title":"EXFO EUI-91 SC OTDR Adapter – SC Connector for EXFO MAX-715B MAX-720B MAX-730 FTB-1 FTB-2","description":"\u003ch2\u003eEXFO EUI-91 SC OTDR Adapter – SC Connector for EXFO MAX-715B, MAX-720B, MAX-730, MAX-720, FTB-1 \u0026amp; FTB-2\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEXFO EUI-91\u003c\/strong\u003e is the genuine \u003cstrong\u003eSC OTDR port adapter\u003c\/strong\u003e designed for EXFO MAX-series and FTB-series OTDRs. It connects directly to the OTDR’s optical port and accepts standard \u003cstrong\u003eSC connectors\u003c\/strong\u003e, enabling insertion loss, return loss, and fiber length measurements on SC-terminated fiber links — the most widely deployed connector type in FTTH, telecom OSP, and enterprise fiber networks.\u003c\/p\u003e\n\n\u003cp\u003eWhen your EXFO OTDR’s SC adapter is worn, damaged, or missing, the EUI-91 is the correct OEM-specified replacement. A dirty or damaged OTDR adapter is one of the most common causes of poor OTDR traces, high dead zones, and inaccurate loss measurements — replacing it with the correct adapter restores measurement accuracy immediately.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible EXFO OTDR Models\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003cth\u003eCompatible Models\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEXFO MAX Series\u003c\/td\u003e\n\u003ctd\u003eMAX-715B, MAX-720, MAX-720B, MAX-730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEXFO FTB Series\u003c\/td\u003e\n\u003ctd\u003eFTB-1, FTB-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eIf you are unsure whether the EUI-91 is compatible with your specific EXFO OTDR model, please contact us before ordering and we will confirm compatibility.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSC Connector Interface:\u003c\/strong\u003e Accepts standard SC\/PC and SC\/APC connectors — the most common connector type in FTTH, PON, and telecom singlemode fiber networks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM EXFO Part – EUI-91:\u003c\/strong\u003e Correct OEM-specified adapter for EXFO MAX and FTB series OTDRs — ensures proper optical alignment and measurement accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OTDR Port Fit:\u003c\/strong\u003e Designed to connect directly to the EXFO OTDR optical port without adapters or modifications — plug-and-play replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores Measurement Accuracy:\u003c\/strong\u003e A worn or contaminated OTDR adapter increases the event dead zone and introduces measurement errors. Replacing with a new EUI-91 restores the OTDR’s specified performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Fits in any OTDR carry case or tool bag — carry a spare EUI-91 for field use to avoid job site delays caused by a damaged adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is an OTDR Adapter and Why Does It Matter?\u003c\/h2\u003e\n\u003cp\u003eAn \u003cstrong\u003eOTDR adapter\u003c\/strong\u003e (also called an OTDR connector interface or OTDR port adapter) is the removable optical interface that connects the OTDR’s internal optical port to the fiber under test. It determines which connector type the OTDR can accept — SC, FC, LC, ST, etc. The adapter is a wear item: repeated connector insertions gradually degrade the ceramic ferrule alignment sleeve, increasing insertion loss at the OTDR port and degrading trace quality.\u003c\/p\u003e\n\u003cp\u003eKey reasons to replace a worn OTDR adapter:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased event dead zone:\u003c\/strong\u003e A worn adapter increases reflectance at the OTDR launch point, extending the dead zone and masking near-end events\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInaccurate loss measurements:\u003c\/strong\u003e Poor optical contact at the OTDR port introduces measurement uncertainty across the entire trace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContamination risk:\u003c\/strong\u003e A damaged adapter ferrule sleeve is harder to clean and more likely to contaminate the OTDR’s internal optical port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector type flexibility:\u003c\/strong\u003e Swapping adapters allows the same OTDR to test SC, FC, LC, and ST fiber links — the EUI-91 is the SC adapter for this purpose\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace Your EXFO OTDR SC Adapter\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOTDR traces show unusually high launch reflectance or extended dead zones\u003c\/li\u003e\n\u003cli\u003eLoss measurements are inconsistent or higher than expected on known-good fiber links\u003c\/li\u003e\n\u003cli\u003eThe adapter ferrule sleeve is visibly worn, cracked, or contaminated and cannot be cleaned\u003c\/li\u003e\n\u003cli\u003eYou need to switch from FC or LC testing to SC connector testing on the same OTDR\u003c\/li\u003e\n\u003cli\u003ePreventive replacement after high-volume field use (recommended every 500–1000 insertions)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFTTH \/ PON network testing\u003c\/strong\u003e — SC connectors are the standard interface in FTTH OLT and ONT equipment; the EUI-91 enables direct OTDR testing of SC-terminated drop fibers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecom OSP fiber characterization\u003c\/strong\u003e — insertion loss, return loss, and fiber length measurement on SC-terminated outside plant cables\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnterprise and data center fiber testing\u003c\/strong\u003e — OTDR testing of SC-terminated structured cabling and backbone fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTDR adapter replacement and maintenance\u003c\/strong\u003e — restoring EXFO MAX or FTB OTDR measurement accuracy after adapter wear or damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField spare\u003c\/strong\u003e — carrying a spare EUI-91 prevents job site delays caused by a damaged or lost SC adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the EXFO EUI-91?\u003c\/strong\u003e\u003cbr\u003e\nA: The EXFO EUI-91 is an SC OTDR port adapter designed for EXFO MAX-series and FTB-series OTDRs. It connects to the OTDR’s optical port and accepts standard SC connectors for fiber optic testing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Which EXFO OTDR models is the EUI-91 compatible with?\u003c\/strong\u003e\u003cbr\u003e\nA: The EUI-91 is compatible with the \u003cstrong\u003eEXFO MAX-715B, MAX-720, MAX-720B, MAX-730, FTB-1, and FTB-2\u003c\/strong\u003e. If you are unsure about compatibility with your specific model, please contact us before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What connector type does the EUI-91 accept?\u003c\/strong\u003e\u003cbr\u003e\nA: The EUI-91 accepts \u003cstrong\u003eSC connectors\u003c\/strong\u003e (SC\/PC and SC\/APC), the most widely deployed connector type in FTTH, PON, and telecom singlemode fiber networks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why does my OTDR need a new SC adapter?\u003c\/strong\u003e\u003cbr\u003e\nA: OTDR adapters are wear items. Repeated connector insertions degrade the ceramic ferrule alignment sleeve, increasing insertion loss at the OTDR port, extending the event dead zone, and reducing measurement accuracy. Replacing the adapter with a new EUI-91 restores the OTDR’s specified performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the EUI-91 on EXFO OTDRs not listed above?\u003c\/strong\u003e\u003cbr\u003e\nA: The EUI-91 is specified for the EXFO MAX and FTB series listed above. Compatibility with other EXFO OTDR models is not guaranteed. Please contact us with your OTDR model number to confirm before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the EUI-91 an OEM EXFO part?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The EUI-91 is the OEM-specified SC adapter for the listed EXFO OTDR models, ensuring correct optical alignment and measurement accuracy.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How many EUI-91 adapters come in one package?\u003c\/strong\u003e\u003cbr\u003e\nA: Each package contains \u003cstrong\u003eone (1) EUI-91 SC OTDR adapter\u003c\/strong\u003e. For bulk or B2B orders, please contact us at sales@opticfibertool.com for volume pricing.\u003c\/p\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEXFO EUI-91 SC OTDR Adapter ×1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EXFO","offers":[{"title":"Default Title","offer_id":33126289113176,"sku":"EUI-91","price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0058\/7923\/4648\/products\/SC.jpg?v=1594225586","url":"https:\/\/www.opticfibertool.com\/en-gb\/products\/exfo-eui-91-sc-otdr-adapter-connector","provider":"Fusion Splicer Store","version":"1.0","type":"link"}