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6.4 Battery Replacement
The battery is not field-replaceable. Contact the factory to acquire an RMA and return the unit to the factory for battery replacement.
The Li-ion battery pack should not be punctured, incinerated, or disposed of improperly.
WARNING
To Prevent Fire or Shock Hazard:
• Do not install battery types other than those supplied by the manufacturer.
• Do not use the charger without the proper batteries installed.
• Do not expose the battery charger to rain or excessive moisture.
• Do not use the AC adapter when there are signs of damage to the enclosure or cord.
• Ensure that you are using the correct charger for the local line voltage.
• Do not use any other charger than the one provided with this instrument.
• Do not puncture batteries.
• Do not incinerate batteries.
• All batteries should be disposed of in a proper manner.
Failure to follow these caution statements may cause unsafe conditions for the operator and/or equipment, and may void
the warranty.
Chapter 7: Visual Fault Locator Operation
7.1 VFL Safety
CAUTION
The Visual Fault Locator is classified as a Class II laser system and must be used with all safety precautions. Never view
the light emanating from the fiber directly. Place a white piece of paper at the end of the fiber and look for the presence of
a red spot on the paper.
7.2 VFL Description
The Visual Fault Locator emits visible red light at the 650 nm wavelength. Its intended function is to allow an operator to identify
the exact location of a break, micro bend, or other discontinuity in a fiber optic cable. As the radiation is visible, light emanating
from a break or micro bend enables the user to locate the exact position of a fault even at very short distances that would not
be detectable by conventional means such as an Optical Time-Domain Reflectometer, (OTDR). It is also useful for identifying a
particular fiber in a cable by illuminating the fiber with visible radiation.
7.3 VFL Operation
Access the VFL in the Home screen. The test fiber is connected to the VFL port of the OTDR by means of a standard 2.5 mm fiber
optic connector. The source can be used in one of its two modes: modulated or continuous. In modulated mode, the laser is turned
on and off at a rate of 2 Hz. The laser turns on for approximately one half of the cycle. This mode is helpful in permitting the user to
identify the source radiation in the presence of high levels of ambient light. It also aids in conserving battery life.
The useable range for fault location depends on many factors including the type of fiber, cable, and the overall loss. To activate the
VFL, tap the "VFL" button on the home screen to cycle through the available states of "Off", "Continuous" or "Modulated" modes.
