OTDR Working principles || Exfo OTDR # OTDR settings. 

OTDR is a device which is used for testing the location of fiber cut in kilometers.Actually it is based on laser pulse , time & wavelength. OTDR expo has some automated functions & it can selected the wavelength as required.
Single mode fiber is used in long haul transmission & multi mode is used for short haul transmission.
#Expo OTDR
#OTDR functions
#OTDR Wavelength
#OTDR devices
#Single mode
#multi mode
#OTDR working principles.
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