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