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Expandable OTDR Module
Expandable OTDR Module

GAO-OTDR-107 Advanced OTDR

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GAOTek Advanced and Expandable OTDR Module is used in testing a wide range of networks from PON to long haul networks and comes with a minimum dead zone of less than 2.6 ft (0.8 m). Its long battery life of up to 8 hours, design durability, flexibility and expandability makes it the ultimate solution for field operation. It supports test profiles which allows to save different measurement parameters. The easy to use graphical interface aids in shortening of the learning curve. The set-up is very simple which has an intuitive test result display.


  • Detection of a jumper cable with a minimum dead zone of <2.6 ft (0.8 m)
  • Self-calibration
  • 8 hours of long battery life
  • Lithium rechargeable battery
  • One button auto test which simplifies fault detection setup
  • Fast storage function
  • Unique mini menu for quick and convenient operation of result review
  • One-button operation to save results
  • User friendly touch screen operation

Technical Specifications

Distance Accuracy ±[2.4 ft (0.75 m) +0.0005  % Distance + Sampling Resolution]
Attenuation Accuracy ±0.002 dB
Loss threshold 0.01 dB
Loss resolution 0.001 dB
Distance resolution 0.16 ft – 41.9 ft (0.05 m-12.8 m)
Linearity 0.03 dB/dB
Sampling points 256000
Data storage >10000
Optical adapter FC/PC, SC/PC
Operating temperature 14 °F ~ 122 °F (-10 °C~ 50 °C)
Storage temperature -40 °F ~ 158 °F (-40 °C ~ 70 °C)
Relative humidity 0 % – 95 %
Weight(Module) 5 lbs (2.3 kg) (0.7 lbs)(0.35 Kg)

Additional Information

  1. Unique mini menu operation not only simplifies the operation but also increases the efficiency of test.
  2. Simple setup with intuitive test result display
  3. Easily accessible help function


Intelligent auto-mode setups up measurement parameters, completes measurement and stores data.

Supports test profiles which allows users to save different measurement parameters

Multiple interface styles enable users to select the best view for different tests.

  • Live fiber detection protects the optical adapter
  • Optical connector detection notifies users of missing connectors
  • Self-calibration of OTDR

Order Information

Model Wavelength Dynamic  Range Event Dead Zone  Attenuation Dead Zone 


1310 nm/1550 nm 37 dB/35 dB 2.6 ft 16.4 ft


1310 nm/1550 nm 40 dB/38 dB 2.6 ft 14.7 ft

Questions from our customers

  1. A

    The loss threshold is 0.01 dB and loss resolution is 0.001 dB.

  2. A

    The linearity of this OTDR is 0.03 dB/dB.

  3. A

    The data storage capacity of this OTDR  is >10000.

  4. A

    Attenuation dead zone for GAO-OTDR-107-A is 16.4 ft (4.5 m) and for GAO-OTDR-107-B is 14.7 ft (4.48 m).

  5. A

    There are two variations for this product with respect to the dynamic range: GAO-OTDR-107-A has a dynamic range of 37 dB/35 dB and GAO-OTDR-107-B has a dynamic range of 40 dB/38 dB.

  6. A

    Yes, this OTDR can fulfill you requirements. This is a dual-wavelength single mode OTDR with testing wavelength of 1310 nm/1550 nm.

  7. A

    Hi, thanks for asking. Yes, the lithium battery in this OTDR is rechargeable and has 8 hours of long battery life.

  8. A

    The dead zone of this OTDR is less than 2.6 ft (0.8 m).

Only registered users are eligible to enter questions