Multimode Variable Fiber Attenuator 62.5u KI7021B

The KI 7020B hand held Fiber Optic Variable Attenuator is a precision handheld instrument commonly used for testing 62.5 u multimode mode fiber sytems for optical system margin and linearity. Superior specifications, high productivity and remote control capability also make this a genuine laboratory grade instrument. An additonal typical application is as a passive adjustable attenuator pad in a transmision system.  

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

KI7021B specifications

Fiber type 62.5 /125 µm
Range 3.0 ~ 60.0 dB
Resolution 0.05 dB
Linearity / Repeatability 0.03 dB
Absolute uncertainty 0.3 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

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General KI 7010 Series Variable Optical Attenuator specifications

Calibration validity (ISO17025) 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

In the box

QA Certificate (ISO9001)

Quality Assurance Certificate

Calibration Certificate (ILAC/NATA)

Calibration Certificate ILAC/NATA Compliant

User Manual Booklet

Instrument User Manual


Quick Reference Guide QRG

Wrist Strap (KI)

Wrist Strap / Lanyard for KI Products

RS232 Cable

RS232 cable

Battery Size Adaptor (AA-to-C)

Battery Size Adaptor AA-to-C

Software (Attenuator control)

Kingfisher Attenuator Remote Control Software

Downloadable from Kingfisher website for free.

SC Through Connector OPT046

SC. KI2600 power meters can use this adaptor for testing duplex SC connectors, other instruments use OPT081
USD $14.30 In stock Add to Enquiry

Hybrid LC Connector Adaptor OPT076

LC Simplex
USD $43.35 Popular Add to Enquiry

Hybrid ST Connector Adaptor OPT040

USD $16.80 In stock Add to Enquiry

Optional accessories


Carry Pouch for KI7000 Series Instruments OPT143

Cases, cleaning tools, test leads, accessories and consumables.
USD $76.19 In stock Add to Enquiry

Semi-Rigid Carry Case for Test Kits OPT153-CASE

Canvas case with foam compartments for 2x KI2000 or KI7000 series instrument, 3x KI9000 series instrument and other accessories.
USD $240.29 In stock Add to Enquiry

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