Centroc GP

Fiber Optic Tuner for measurement of geometrical parameters at fiber optic connectors.

Eccentricity/Concentricity Measurement and Tuning

for Minimizing Insertion Loss of Fiber Optic Connectors.




See Centroc GP Demonstration Video --------->  HERE



Key Features

      +Fiber and FerruleVisual examination
      +Eccentricity or Concentricity Measurements of Fiber Core w.r.t Ferrule Outside Diameter
      +Ferrule Cylindricity Assessment
      +Angular Tuning of PC connectos for Minimum Insertion Loss (After PC Polishing)
      +Angular Tuning of APC Connectors for Optimal Angular Polishing and Minimum Insertion Loss (Before APC    




  The CentrocGP is a specially designed auto-focus microscope with a digital camera and precision chucks. The

  system performs measurements of fiber optic core eccentricity with respect to ferrule outside diameter of

  connectors, and provides the basis for angular tuning of PC-type (@ post PC polishing) and APC-type (@ pre-APC

  polishing) connectors. 

  The PC controlled unit is equipped with universal active devices (LEDs @ 475nm and 630 nm) for connector types

  equipped with 2.50mm and1.25mm ferrules. Measurement fixtures are available for all standard connectors and


  The system collects a pre-selected number of focused imaging scans from the fully filled illuminated fiber core.

  Between the scans the connector is rotated in steps of 45, 60 or 90 degrees. Digital images are processed by

  machine vision software and the following results are supplied:

  • The Eccentricity Amplitude as defined from the center of the ferrule outside diameter to the fiber core center
  • (Quick switch between Eccentricity and Concentricity outputs is available)
  • The Eccentricity Angle relative to Key Orientation
  • The Cylindricity of ferrule outside diameter

  Indicated are:


  • Reference for Centered or Tuned connector
  • Product identification, operator and unit identification
  • Statistics of measurement results

Norland CentrocGP





12 VDC Powered though the PC


Temperature Range

10°- 45° C Operating, 5°- 55° C storage.


Dimensions, weight

260 x 150 x 345 mm (w x h x d), 7.5 kg.


Optical Power LED

Maximum 25 dBm (475 and 630 nm).


Camera Sensitivity

400 1100 nm Wavelength


Fiber/Connector Types

SM, MM graded index and MM step index types. PC type (post PC polishing) and APC type (pre-APC polishing) connectors.


Repeatability of Eccentricity Amplitude (Standard Deviation)

Less than 0.05 µm for Eccentricities 0~10 µm


Repeatability of Eccentricity Angle (Standard Deviation)

Less than 5° for Eccentricities greater than 0.2µm; Not Applicable for Eccentricities less than 0.2 µm



Pentium Dual Core, 3.0 Ghz, 2GB RAM, 160 GB HD



Windows XP Pro or 2000 Pro.


Standards reference

IEC 61300-3-18 annex A, IEC 61300-3-24, IEC 61300-3-26, IEC 61300-2-41, ISO 2538



To Download a Technical Data Sheet click >>HERE

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