Home  >  News  >  FAQ

What is an OTDR dead zone?

Time: 2021-06-26 Views: 981

Dead zones originate from reflective events (fusion splices, fibre optic connectors, pressure points, etc) along the link and can affect the OTDR's ability to accurately measure attenuation on shorter links and differentiate closely spaced events. The OTDR will become temporarily blinded by the first event it picks up and will not see upcoming events close to each other and will instead pick them up as one event. Dead zones can extend hundreds of metres from the OTDR unit but can be reduced (but never eliminated) by adjusting the pulse width in accordance with the length of the fibre.

You Might Interested
Sviaz Expo Comm, Moscow. May 14 - 17 GITEX 2012, Dubai. October 14 - 18 Iran telecom 2014, 26 - 20 September 2014 When should I use OM3 fibre cable over OM1 fibre cable? CeBIT Australia, 5~7 May 2014 CFCF (China Fiber Connect Forum) Suzhou - 2024 CIOE, Shenzhen. September 5 - 8 What fibre optic cable should be used for underground installation? Anga Cable, Cologne. June 12 - 14 Can I convert Multimode to Singlemode and vice versa?