This hand-held fiber optic variable attenuator is a precision handheld instrument commonly used for testing 50u multimode mode fiber systems for optical system margin and linearity. Superior specifications, high productivity and remote-control capability also make this a genuine laboratory grade instrument. An additional typical application is as a passive adjustable attenuator pad in a transmission system.  

  • Easy to use, accurate & productive instrument
  • Excellent linearity and absolute loss accuracy
  • Power handling to >+30 dBm / 1000 milliwatts
  • Broadband, flat λ response
  • Low minimum insertion loss
  • Excellent ORL & PMD characteristics
  • Supplied with SC, ST, LC interchangeable connectors
  • Remote control (LabWindows) software
  • Set attenuation is unaffected by power on/off status
  • Very long battery life

Key Features


KI7020B specifications
Fiber type 50 /125 µm
Range 3.0 ~ 60.0 dB
Resolution 0.05 dB
Linearity / Repeatability 0.2 dB
Absolute uncertainty 0.5 dB
Power capability +30 dBm
Optical return loss (ORL) 60 dB
Polarization dependent loss (PDL) < 0.1 dB
Thermal stability over temperature ±0.02 dB
Operating wavelength range 700 ~ 1400 nm
Nominal Calibration wavelengths 850, 1300 nm
Wavelength dependence (850 ~ 1300 nm) < ±0.5 dB up to 20 dB
General Variable Optical Attenuator KI 7010 Series specifications
Calibration validity (ISO/IEC 17025) 3 years
Interface RS232 (3.5mm jack connector, default baud 9.6K)
Power batteries or external
Battery type 2x C (R14) Alkaline
Battery life 7.6 A/Hour
External power 9~12 V DC with ID2.5mm(+ve)-OD5.5mm-plug
Auto off Selectable
Case Polycarbonate, 1-meter drop tested, with captive caps
Size 190 mm x 130 mm x 70 mm
Unit weight 0.52 kg
Shipping weight 1.5 Kg
Operating / storage temperature -15 to 55 °C / -25 to 70 °C
Relative humidity 0 ~ 95 %
Warranty 3 years

Documentation & Support


In the box

Optional accessories


FC Hybrid Connector Adaptor OPT051

FC. OPT081 is preferred for power meters, since FC ceramic sleeves break easily.


LC / F3000 Hybrid Connector Adapter OPT072

For F3000 PC Simplex. This is an LC-PC adapter that also fits F3000. For LC-PC only use, OPT076 is better value and more robust.


Semi-Rigid Carry Case for Test Kits OPT153-CASE

Semi-rigid canvas test kit case for two KI2000 or KI7000 series instruments, and three KI9000 series instruments. With carry straps and compartments for accessories storage. Moulded interior provides a perfect combination of durability, protection, and comfortable use.


Fiber Connector Cleaner Cartridge TOOL CLEAN-09A

To clean a connector end face / tip, prior to connector insertion into a mating adaptor.


Stick-Type Cleaner 2.5 mm TOOL CLEAN-03

To clean the end face and mating sleeve of a fiber optic connector with 2.5 mm diameter ferrule. SC, FC, ST etc.


Stick-type Cleaner 1.25 mm TOOL CLEAN-04

To clean the end face and mating sleeve of a fiber optic connector with 1.25 mm diameter ferrule, LC, SN etc

© Kingfisher International, Australia, ABN 51 007 250 213