dB otdr EXFO optical fiber identifier FTB-200 fiber otdr price (41/42dB 1310/1550nm)
36/34 dB ,1310/1550 nm dB OTDR EXFO optical fiber identifier FTB-200 Fiber otdr price
EXFO EMP50 Fiber Optical Power Meter /fiber optic fusion
EXFO Fiber Power Meter /fiber optic fusion tester EPM-50