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DLS355 User Guide
The DLS355 dual Laser source is a low cost compact multimode test Laser used for verifying the proper function of fiber
optic networks. This document will serve as an overview of the major features and functions of the device and will offer
tips for troubleshooting common issues in optical networks.
Introduction
Wavelength Indicator
This unit offers 1310nm and 1550nm wavelengths. When the DLS355 is turned on, the red
light indicates which wavelength is selected. The red light will blink to indicate when the
2khz modulation is turned ON.
Power Button
Press this button to turn the DLS355 ON and OFF. The unit will turn off automatically after
15 minutes by default. To disable this timeout hold the power button for at least 5 seconds
when turning ON.
2kHz Button
Toggles 2kHz tone on the currently-selected wavelength. This is usefull for detecting which
fiber is being tested at the other end however the modulation reduces output power by
Wavelength Button
cycles through either 1310nm or 1550nm wavelengths
Low Battery Indicator
This indicator light will light up when the CR2 battery needs to be replaced.
Do Not Stare Into Beam
Laser Radiation
DO NOT STARE INTO BEAM
CFR 1040.10 IEC 60825-
1:2014-05
Class 1 Laser Product
Connector Adapter
The DLS355 comes with an SC screw-on adapter by default, however additional adapters
are available and are user replaceable.
Device Overview
