SSF TL-SSF-TESTK-1 Quick Start Manual Download Page 1

Your power meter and light source units will be used to measure loss in dB of the power transmitted into the cable by the light source 
versus power measured on the receiver end by the power meter.  Loss testing is done at wavelengths for the fiber in use, typically 
850nm for multimode and optionally at 1300nm, while single mode is tested at 1310nm and optionally 1550nm.  The measured loss 
can be compared to the estimated loss for the link or “loss budget.”

This testing kit combined with the included reference cables allows for single-ended loss testing of fiber optic cables.   Double ending 
requires additional reference cables.

For set-up, allowable loss, link budget calculations, etc., the Fiber Optic Association (FOA) is a great resource for testing guidelines.  
FOA power testing instructions are included with your kit and should be reviewed prior to using this equipment.  Information on the 
two noted tests above can be found via the FOA at www.thefoa.org, including fiber optic testing methods and standards.

**AAA (1.5 V) BATTERIES REQUIRED.  BATTERIES NOT INCLUDED.  INSERT 3 PER UNIT TO OPERATE.**

1.  Select  correct  light  source  for  fiber  type 
being  tested  (SM  =  single  mode  or  MM  = 
multimode;  labeled  above  screen  on  left). 
Turn  on  both  light  source  (OLS)  and  power 
meter (OPM). 
Set both the OPM & OLS units to the desired 
wavelength by pressing the wavelength 
button on each unit.

850nm: Typical multimode testing
1310nm: Typical single mode testing

1A.  Wavelength on the OLS is displayed in 
the upper left corner of the screen. Set to 
desired value (press wavelength key.)  
KHz  (lower  right)  will  have  a  numeric 
reading or dashed lines when the laser is on. 
Dashed lines (---) indicate that the laser is in 
continuous wavelength mode. 

1B. Set OPM to same to same wavelength 
as  the  OLS  unit.    Press  the  wavelength 
button until desired value appears.
Note: Typically 850nm for multimode 
testing and 1310nm for single mode. 
*Use appropriate cables. Aqua = 
multimode. Yellow = single mode.

2.  On  the  OLS  press  CW  button  until  1.0 
KHz* displays in lower right of the screen 
(see step 1A image).
*Typical  testing  configuration  for  most 
cables

3. On the OPM, press the “dBM/W” button 
until dBM is the unit listed to the right of the 
main screen read-out (see step 1B image).

4. Plug REFERENCE cable into OLS. Note: Do 
not look into laser while unit is on.
SC testing: plug appropriate multimode or 
single mode cable into OLS.
LC testing: Attach appropriate SC to LC 
adapter, then plug MM or SM reference 
cable into adapter.

Adapter: Beige = multimode
Blue = single mode

SSF™ TL-SSF-TESTK-1 Test Kit

TL-SSF-TESTK-1 Quick Start Guide

WARNING: LIGHT SOURCE LASER DOES NOT OPERATE AT VISIBLE WAVELENGTH. LIGHT IS NOT VISIBLE 
WHEN LASER IS ACTIVE. TO AVOID THE RISK OF EYE DAMAGE, DO NOT LOOK AT LASER WHEN LIGHT 
SOURCE IS OPERATIONAL.

www.tlnetworx.com

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