SmartClass Fiber OLT-85 and -85P Inspection-Ready Optical Loss Test Sets (Discontinued)

The SmartClass™ Fiber OLT-85 and -85P combine a fiber inspection microscope, optical power meter (OPM), and optical light source (OLS) in one instrument for all essential fiber tests in multimode and singlemode networks.

VIAVI merges a highly accurate optical power meter and up to four light sources in one compact test instrument to create a test set that precisely and automatically measures insertion loss error-free. The ultra-sensitive power meter combined with stabilized light sources can measure fiber loss up to 85 dB for single-mode and up to 65 dB for multimode. Its specific wavelength combinations make it ideal for qualifying and certifying long-haul, metro, and access telecommunication networks as well as data center and local area networks. Adding the P5000i digital analysis microscope to the OLT-85 and -85P lets users check fiber end-face quality with pass/fail acceptance results at the push of a button.


  • Complete jobs faster, correctly, and on time—right the first time 
  • Automated pass/fail fiber inspection analysis with the optional P5000i microscope, also available with integrated PCM
  • Compact, rugged, weather-proof design


  • Measurement of optical power (absolute and relative)
  • Measurement of optical insertion loss
  • Inspection of optical connectors (IBYC)

Key Features

  • Battery-operated field-portable optical loss test set with an 800 to 1700 nm measurement wavelength range (1 nm incremental setting) at the power meter, multiple wavelengths at the source and an ultra-wide loss range of 85 dB (singlemode)/65 dB (multimode)
  • 2.5 mm and optional 1.25 mm universal push-pull (UPP) adapter system compatible with all optical connector types (power meter port)
  • Interchangeable optical adapters (Senko) for FC, SC, ST and LC optical connectors (light source port)
  • 3.5-in color touch screen with integrated stylus
  • Individual threshold settings for power and loss pass/fail analysis
  • Onboard fiber inspection and test results storage with time stamp
  • Data transfer and remote control via USB or Ethernet interface
  • Auto-lambda and multi-lambda test functions

Related Products

Support at Every Step

We provide support, services, comprehensive training and the resources you need. It’s all part of what we do to maximize the value of your VIAVI investment.

Let Us Help

We’re here to help you get ahead.