FS FOLS-201 User manual

OPTICAL LIGHT SOURCE
Fiber Testers
Quick Start Guide V1.0
MOD
ID
PERM Set
>2s OFF
OPTICAL LASER SOURCE

Introduction
The handheld optical light source is a fiber optic tester which can provide
dual-wavelength laser output. It provides excellent power stability for FTTx networks
and fiber network testing. When combine with a power meter, it offers a quick and
accurate testing solution on both single mode and multimode fibers. The figures below
display the product images of the four optical light sources.
FOLS-201/FOLS-202 FOLS-203/FOLS-204
MOD
ID
PERM Set
>2s OFF
OPTICAL LASER SOURCE
>2s PERM
ON
OFF CW
Hz
λ
DUAL LASER SOURCE

Accessories
FOLS-201/FOLS-202
FOLS-203/FOLS-204
SC Adapter x1 FC Adapter x1
ST Adapter x1SC Adapter x1 FC Adapter x1 CD x1

Installing
2. Install FC fiber cable.
1. Remove dust cap.
Inserting FC Cables

Inserting ST Cables
1. Install ST connector.
2. Install ST fiber cable.

2. Install SC fiber cable.
1. Install SC connector.
Inserting SC Cables

Function Introductions
FOLS-201/FOLS-202
Description
Power/Backlight Button
Output Wavelength Shift Button
Wavelength ID Button
Load Modulation Button
Button
PERM Set
>2s OFF
MOD
ID
Description
MOD
ID
PERM Set
>2s OFF
OPTICAL LASER SOURCE

Operation Instructions
1. Power On/Off and Auto-off Function
Press button to turn on the instrument. Press it again for 2 seconds or more to turn
off the instrument.
This light source has a power-saving function. If 10 minutes without any operation, the
instrument will automatically shut down. If you need to disable this function, only need
to press the button for 2 seconds when you turn on the instrument till it displays
“PERM”.
2. Backlight Function
When the instrument is powered on, short press button, you can control the
backlight function on or off. The backlight function supports you to use the light source
at night or darker occasions.
3. Select Wavelength
After pressing button, you can select the required output wavelengths.
The power meter or other measuring instrument should select correspond wavelength
of light source.
4. Modulation Output
After pressing button, you can load a modulation current output laser.
This instrument has 3 modulations for selection: 270Hz, 1KHz, 2KHz.
5. Wavelength Identification
Press button, the light source will output with wavelength ID and LCD will display
“ID”. If work with the paired power meter with WAVE ID function, the optical power
meter will change to the same wavelength automatically.
MOD
ID

Function Introductions
FOLS-203/FOLS-204
>2s PERM
ON
OFF
CW
Hz
λ
Button Description
Power Button
Modulated Wavelength Shift Button
Backlight Control Button
Wavelength Shift Button
>2s PERM
ON
OFF CW
Hz
λ
DUAL LASER SOURCE

Operation Instructions
1. Power On/Off and Auto-off Function
Press button briefly. The instrument powers on.
Press button briefly again. The instrument powers off.
2. Select Wavelength
Press button to select the wavelength between 1310nm and 1550nm (FOLS-203),
or between 850nm and 1300nm (FOLS-204).
3. Frequency Output
The instrument defaults to CW when it switches on. When it sets to CW, there is no
frequency on display.
Press button to select the output among 270Hz, 1kHz and 2kHz.
4. Switch Backlight of LCD On/Off
Press button to switch the backlight of the LCD on and off.
ON
OFF
ON
OFF
CW
Hz
λ
NOTE: Auto-off function
(1) The instrument will power off automatically if 10 minutes without any
operation.
(2) While in the power-on state, press button for about 2 seconds to turn
off the “Auto-off” function.
ON
OFF

1
Online Resources
Download
Help Center
Contact Us
https://www.fs.com/download.html
https://www.fs.com/service/help_center.html
https://www.fs.com/contact_us.html
Maintenance
(1) The interface is sensitive, please carefully plug in and pull out the adapter.
(2) Take out the batteries when not in use.
(3) Keep regular cleanings on optical port of an optical light source with cotton swabs.
(4) In order to avoid the electric shock, please do not disassemble the components.
Disobeying the standard instruction may lead to safety issues.
(5) In order to avoid the measurement errors, please cover the dust-proof cap to ensure
the optical interface is clean when the unit is not in use.
(6) Do not view the laser output directly when using the optical light source. Or else,
personal injury should not be attributed to the product and FS.
Product Warranty
FS ensures our customers that any damage or faulty items due to our workmanship, we
will offer a free return within 30 Days from the day you receive your goods.
Warranty: All Optical Light Sources enjoy 1 year limited warranty against
defect in materials or workmanship. For more details about warranty, please
check at https://www.fs.com/policies/warranty.html
Return: If you want to return item(s), information on how to return can be
found at https://www.fs.com/policies/day_return_policy.html

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