技术在快速发展进步。因此，我们建立了易于使用的术语汇编，帮助您更好地了解影响您业务的术语、技术和趋势。
A peak or blind spot on an OTDR trace where no measurement can be made. This is caused by a Fresnel reflection and the subsequent recovery time of the OTDR detector. Dead zones are always prominent at the very beginning of a trace or at any other high reflectance event.
