User's Guide

Table Of Contents
9
Ref Feature Description
6 OTDR/Light Source
port
This is a CLASS I LASER output. 1550 nm only, 1650 nm only, 1310/1550 nm,
or 1310/1550/1650nm single-mode OTDR/Light Source port, depending on model.
7
Power meter port
Optical Power Meter port. Used for power (dBm, W) or loss (dB) measurements.
8 VFL port This is a CLASS II LASER output. Do not stare into beam! The VFL (visual fault
locator) port is a 650 nm (visible red) laser. Used for short-range fault-location.
9 Dust cap Used to protect optical ports from dust/damage. It is important to keep the dust caps
in place when the unit is not being used.
10 Touchscreen
display
Contains on-screen controls and menus. Used to show setup menus, test results, and
saved test data information.
Hardware Overview
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