optical fiber fault point can be judged conveniently and accurately by observing the leakage position on the measured fiber. It
is suitable for the detection of bare optical fibers,jumpers and other high loss sections caused by near-end faults and
micro-bending of optical fibers and cables which can leak red light.
Avoid looking directly at the laser output port.
Laser can cause damage to human retina.
F1: Open VFL
F2: VFL flash at 1 Hz
F3: VFL flash at 2 Hz
F4: Turn off VFL
LS-Laser Source
The wavelength of stabilized laser source is the same as OTDR wavelength. It is
used to measure the parameters of telecommunication, CATV, LAN cable,
insertion loss, isolation loss and echo loss of optical passive devices, and
wavelength responsiveness of detectors. There are five modes of light
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