Continuity, polarity and fault finding

Simple tools to quickly trace signals or find faults, often using visible light (VFL), or clip-on solutions. Handy for almost any fiber optic system.
KI 6354 Pen Visual Fault Finder
  • Pen sized VFL fault locater & line tracer
  • Single mode, multimode and plastic fiber applications
  • Eye safe Class 1 device, no safety procedures required
  • Rugged & simple fibre optic fault finder
  • 2.5 & 1.25 mm universal connector options
  • Pulsed or continuous laser options
  • Useful in combination with an OTDR, to help exactly identify a fault
KI 9800A Pocket Fiber Source
  • Economical, intuitive, rugged & reliable
  • Single mode options
  • Multimode options, Encircled Flux compliant
  • VFL fault locator options
  • POF LED options
  • Multimode VCSEL options
  • Interchangeable connectors
  • Long alkaline battery life
  • Autotest
KI 6170 Clip-on fiber identifier
  • Easily check for traffic or ID tones on live fiber
  • Supplied with interchangeable heads for most fiber/cable types
  • Low false detection rate
  • Uses popular 9 volt battery size. Auto turn-off
  • Power display is very useful for finding lossy components
  • Identifiers require a light source with tone facility, preferably 1550 nm
Cold Clamp (buried cable fault locator)
  • Use liquid nitrogen to induce a non-destructive optical marker
  • Use with OTDR to localize physical fault within 1m
  • Significantly improve real-world response & labor time
  • Works on live systems

Quickly check MPO / MTP polarity


KI-TK072 SM & MM 2000 - Contractor kit

  • Popular kit for single mode and multimode applications.
  • KI2824 850 / 1300 / 1310 / 1550 nm Autotest LED / laser source
  • KI2600-Ge Optical power meter with Ge detector, Autotest, 24 calibration wavelengths, memory, USB
  • KITS™ Reporting software
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
  • Meets TIA-568-C.0
KI-TK071A SM & MM - MPO & MTP™ 2000 Ge

  • Popular kit for single mode, multimode and MPO applications.
  • KI2824 850 / 1300 / 1310 / 1550 nm Autotest LED / laser source
  • KI2600XL-Ge5 Optical power meter with large area Ge detector, Autotest, 10 calibration wavelengths, memory, USB
  • KITS™ Reporting software
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Connectors: MPO / MTP™, LC, SC as appropriate
  • Optional visible fault locator eg KI6354 etc as required
KI-TK054 POF / PCS / HCS 9000 - Simple kit

  • KI9809AM 650 / 660 nm LED source
  • KI9600XL-Si5 Optical power meter with 5 mm Si detector & 6 calibration wavelengths
KI-TK076 SM & MM 2000 - Simple kit

  • KI2824 850 / 1300 / 1310 / 1550 nm Autotest LED / laser source
  • KI2600-Ge Optical power meter with Ge detector, Autotest, 24 calibration wavelengths, USB, optional Visual Fault Locator
  • KITS™ Reporting software
KI-TK083 PON On-site - Complete turn-up

  • KI6102AA-APC PON power meter
  • Pass/Fail setup & reporting software
  • KI6610 x200 Connector inspection microscope (or Fiber identifier)
  • KI6354 Visual Fault Locator 
  • Cleaning tools & materials
KI-TK022A SM Two-Way

  • KI7343C-InGaAs pair - 1310 / 1550 nm two way & ORL testers, zero warm up, Autotest, memory, USB
  • KITS™ Reporting software
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
KI-TK072A SM & MM 2000 - Australia contractor

  • KI2825-APC 850 / 1300 / 1310 / 1550 / 1625 nm Autotest LED / laser source
  • KI2600-Ge Optical power meter with Ge detector, Autotest, 24 calibration wavelengths, memory, USB
  • KITS™ Reporting software
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator as required
  • Specifically designed for Australian test requirements.
  • Meets TIA-568-C.0
KI-TK074 SM & MM 2000 - Contractor kit

  • KI2824 850 / 1300 / 1310 / 1550 nm Autotest LED / laser source
  • KI2600-Ge Optical power meter with InGaAs detector, Autotest, 24 calibration wavelengths, memory, USB, optional Visual Fault Locator
  • KITS™ Reporting software
KI-TK032 MM 9000 - Multimode

  • KI9812 850 / 1300 nm LED Source
  • KI9600-Ge Optical power meter with Ge detector, 9 calibration wavelengths
  • KITS™ Reporting software, manual data entry
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
KI-TK082 SM & MM 9000 - Transmission

KI9600-Ge Optical power meter with Ge detector, 9 calibration wavelengths
KITS™ Reporting software, manual data entry
KI6610 x200 Connector inspection microscope (or Fiber identifier)
KI6354 Visual fault locator
Cleaning tools & materials

KI-TK037 SM & MM 9000 - Contractor kit

  • KI9822 1310 / 1550 nm Laser Source and KI9812 850 / 1300 nm LED Source
  • KI9600-Ge Optical power meter with Ge detector, 12 calibration wavelengths
  • KITS™ Reporting software, manual data entry
  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
  • Meets TIA-568-C.0
KI-TK033 MM - MPO & MTP™ 9000 Si

  • A popular solution for MPO / MTP testing.
  • Multimode 850 nm applications
  • KI9812 850 / 1300 nm LED Source
  • KI9600XL-Si5 Optical power meter with large area Silicon detector, 8 calibration wavelengths
  • KITS™ Reporting software, manual data entry
  • KI6610 x200 Connector inspection microscope
  • Cleaning tools & materials
  • Connectors: MPO / MTP™, LC, SC as appropriate
  • Optional visible fault locator eg KI6354 etc as required
KI-TK038 SM & MM 9000 - Simple kit

  • KI9812 850 / 1300 nm Autotest LED source
  • KI9822 1310 / 1550 nm Autotest Laser source
  • KI9600-Ge Optical power meter with Ge detector & 9 calibration wavelengths
KI-TK081 SM 2000 + 9000 - Simple kit

KI-TK052 LAN 9000 - Simple kit

  • KI9812 850 / 1300 nm Autotest LED source
  • KI9600-Ge Optical power meter with Ge detector & 9 calibration wavelengths
KI-TK056 SM 9000 - Simple kit

  • KI9822 1310 / 1550 nm Autotest Laser source
  • KI9600-InGaAs Optical power meter with InGaAs detector & 9 calibration wavelengths
KI-TK077 SM 2000 - Simple kit

KI-TK812 12 Fiber MPO/MTP™ Visual Cable Verifier

  • A unique MPO visual inspection solution
  • KI28812 MPO-12 Visual Cable Verifier Source 
  • KI6608 Microscope Optical 40x
  • Cleaning tools & materials
KI-TK824 12 / 24 Fiber MPO/MTP™ Visual Cable Verifier

  • A unique MPO visual inspection solution
  • KI28824 MPO-12/24 Visual Cable Verifier Source
  • KI6608 Microscope Optical 40x
  • Cleaning tools & material
KI-TK832 32 Fiber MPO/MTP™ Visual Cable Verifier

  • A unique MPO visual inspection solution
  • KI28832 MPO-32 Visual Cable Verifier Source 
  • KI6608 Microscope Optical 40x
  • Cleaning tools & material
KI-TK872 72 Fiber MPO/MTP™ Visual Cable Verifier

  • A unique MPO visual inspection solution
  • KI28872 MPO-72 Visual Cable Verifier Source
  • KI6608 Microscope Optical 40x
  • Cleaning tools & material
KI-TK1010 General - Cleaning & inspection kit

  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
  • Additional space for other equipment
KI-TK1012 MPO/MTP™ - Cleaning & inspection kit

  • KI6610 x200 Connector inspection microscope (or fiber identifier)
  • Cleaning tools & materials
  • Optional visible fault locator eg KI6354 etc as required
  • All optimised for MTP™/MPO, LC and SC connectors
  • Additional space for other equipment

Integrated VFL

Products with a VFL port, or VisiTest - Combining a blinking visible light with Multi-λ AutoTest.

KI 2600 Handheld Power Meter
  • Our best-selling professional productivity meters
  • Ideal for installers & contractors
  • Real-time 3λ AutoTest display
  • Comprehensive reporting capability
  • Easy interface, expert features, great docs
  • Leading accuracy, precision & test confidence
  • Rugged & practical design, made in Australia
  • Wide variety of variants & features for all networks
KI 2700 Handheld Loss Test Set
  • Versatile: LED / Laser / VFL sources and power meter in one compact Autotest unit
  • Versatile reporting / data handling options
  • USB key storage support
  • Unique and useful VisiTester option
  • Optical power meter with 1% accuracy
  • Versatile powering options
  • Large clear display
KI 2800 Handheld Source
  • Versatile: Intuitive to use, rugged & reliable
  • Mixed single mode laser / multimode LED options
  • Encircled Flux compliant
  • Unique VisiTester VFL locator option
  • Up to 6 wavelengths
  • Interchangeable connectors
  • Long alkaline / rechargeable battery life
  • Autotest
  • POF LED options
KI 9800A Pocket Fiber Source
  • Economical, intuitive, rugged & reliable
  • Single mode options
  • Multimode options, Encircled Flux compliant
  • VFL fault locator options
  • POF LED options
  • Multimode VCSEL options
  • Interchangeable connectors
  • Long alkaline battery life
  • Autotest

The useful operating range of fiber optic visual fault locators is widely misquoted, with ranges of 20, 30, 40 and even 50 Km often incorrectly stated.
This is what they will actually do. There is no magic, it's just a combination of emitted power, attenuation and eye sensitivity, combined with eye safety limits on emitted power when no connector is attached (which is often not quoted at all).

If you are struggling here, consider a different technology that's safe to use.

VFL range under ideal conditions Power level connected Power level disconnected Wavelength "Connector end view" continuity "Break location" in patch lead "Side glow" continuity Comment
KI6354 Pen -4.5 dBm - 1.5 dBm typ 650 nm 8.75 Km 5.75 Km 3.75 Km Small & easy
KI9807 -2 dBm -2 dBm 635 nm1 8.75 Km 5.75 Km 3.75 Km Brighter on short distances
KI2600 Power meter +2 dBm +2 dBm 650 nm 9.8 Km 6.8 Km 4.8 Km Top performance
KI2000 Series VisiTest +2 dBm +2 dBm 650 nm 9.8 Km 6.8 Km 4.8 Km Top performance
Class 1 Legal Limit +3 dBm +3 dBm   10 Km 7 Km 5 Km No precautions needed
KI9808 +7 dBm +7 dBm 650 nm 10.7 Km 7.7 Km 5.7 Km Requires special site precautions
Class 2M Legal Limit +10 dBm +10 dBm   11.2 Km 8.2 Km 6.2 Km Maximum legal power level allowed
Illegal VFL "20Km" +20 mW / 13 dBm Not specified! 650 nm 11.7 Km 8.7 Km 6.7 Km Illegal
Illegal VFL "30Km" +30 mW / 14.8 dBm Not specified! 650 nm 12 Km 9 Km 7 Km Illegal
Illegal VFL "40Km" +40 mW / 16 dBm Not specified! 650 nm 12.2 Km 9.2 Km 7.2 Km Illegal
Illegal VFL "50Km" +50 mW / +17 dBm Not specified! 650 nm 12.4 Km 9.4 Km 7.4 Km Illegal
Source & Clip on Identifier 0 dBm 0 dBm 1550 nm 200 Km 200 Km 200 Km Good long range solution!

Note 1: Attenuation is higher at 635 nm than at 650 nm. In addition to the photopic curve effect, this makes faults look brighter.
These calculations are approximate and variations may be observed in practice, depending on the fiber type, fiber & cable pigments, cable construction, ambient lighting, operator skill etc. 

See also: Application note 24 : How far can a VFL go?, General Optical Safety Standards, 1992 Kingfisher Introduces World's first handheld solid state VFL, FiberSafe Microscope