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FLX380 Top Panel FLX380 PRO Kit FLX380-soft-case FLX380 FLX380 with FOCIS Flex FLX380_Link_Map_with_graphic Link_Map_Screenshot


  • Patented in- or out-of-service testing from a single port*
  • Test live PONs without service disruption
  • Test up to 160km or through PON splitters up to 1x128
  • Industry-leading attenuation and PON dead zones
  • Reduce test time and setup errors with intelligent source and power meter
  • >12-hour continuous battery operation
  • Rugged, hand-held and lightweight (<1 kg)
  • High-contrast display, easily viewed even in direct sunlight
  • Instant On; Ready to test in <5 sec


  • Verify point-to-point and PON broadband optical network installations
  • Troubleshoot live FTTx PON networks with split ratios up to 1:128
  • Verify network length, link loss and optical return loss (ORL)
  • Generate tones for positive fiber identification
  • Visibly trace fibers or locate fiber bends or breaks using integrated VFL
Download Specification Sheet

Challenges of FTTX White Paper


FLX380 FlexTester3 OTDR

The FLX380 FlexTester3 family provides the world’s smallest, lightest, most complete single-mode broadband network OTDRs with integrated optical light source, power meter, and visual fault locator (VFL).

Delivering an unmatched combination of optical test functions, ease-of-use, portability and value, FlexTester3 models offer the following benefits:

  • Complete in- or out-of-service PON OTDR and power measurements from a single port using patented* ServiceSafe™ capability
  • Test through PON splitters up to 1x128
  • High dynamic range using narrow pulse widths
  • Verify PON power levels and complete live PON OTDR tests without disrupting service
  • Automatically detect, identify, locate and measure macrobends and splitters
  • Measure end-to-end link length, loss and ORL
  • Simplify insertion loss measurements, reduce test time and eliminate setup errors using integrated source and power meter with AFL's Wave ID
  • Test all day (>12 hours) without replacing or recharging batteries
  • Instant On:  Ready to test in < 5 seconds
  • Designed for outside plant:  Rugged, handheld, lightweight

The FlexTester3 family is offered in four models to best suit your application requirements:

  • FLX380-304:  Verify both in-service (live) and out-of-service FTTx networks from a single port.  Includes 1310/1550/1650 nm live PON OTDR with integrated PON power meter.
  • FLX380-303:  Similar to FLX380-304, but with 1310/1550/1625 nm live PON OTDR.
  • FLX380-302:  Complete out-of-service testing at all FTTx PON wavelengths (1310/1490/1550 nm).
  • FLX380-300:  Lowest cost, high-performance, all-in-one 1310/1550 nm OTDR for out-of-service installation testing or troubleshooting both FTTx PON and point-to-point networks.
  • All models include integrated VFL plus Wave ID source and power meter.

The FLX380 FlexTester3 user interface features an easy-to-use, top-down menu structure.  Fully automatic and expert modes are available for both novice and expert users.  User interface software supports over a dozen languages including English, Chinese, French, German, Italian, Japanese, Korean, Portuguese, Polish, Russian, Spanish and Turkish.

Over 1000 OTDR test results may be saved in Telcordia SR-4731 .SOR file format.  Stored OTDR and OPM results may be transferred to PC via USB or Bluetooth® for viewing, analysis, and professional report generation using the included Windows® compatible TRM® 2.0 Basic Test Results Manager software.

Advanced analysis and reporting capabilities, including bi-directional trace averaging, are available by upgrading to TRM 2.0 Advanced (learn more here).

FLX380 FlexTester3 Configuration Options

The FLX380 FlexTester3 is available in three different kit options:

  • FlexTester3 Complete / Complete2 Test & Inspection Kits – User-selected FLX380 FlexTester3 with either FOCIS Flex or FOCIS PRO Fiber Optic Connector Inspection System, user-selected Optical Fiber Identifier, fiber ring launch cable, cleaning supplies plus standard accessories in a rugged, waterproof hard-shell carry case.
  • FlexTester3 PRO / PRO2 Test & Inspection Kits – User-selected FLX380 FlexTester3 with either FOCIS Flex or FOCIS PRO Fiber Optic Connector Inspection System, connector cleaning supplies plus standard accessories in a rugged, waterproof hard-shell carry case.
  • FlexTester3 with Soft Carry Case – User-selected FLX380 FlexTester3 with standard accessories plus One-Click Cleaner in a convenient, lightweight soft carry case.

All FLX380-30x kits include rechargeable, replaceable Li-Ion battery pack, AC charger with country-specific power cord, (1) SC and (1) FC adapter for the OTDR/OLS port, (2) 2.5 mm Universal adapters for the OPM and VFL ports, dust caps for all ports, USB cable, TRM® 2.0 Basic Test Results Manager software, and a quick reference guide in any one of the supported languages.  Additional accessories are available, including:

The FlexTester3 is also available with prepaid calibration and extended warranty plans.

FLX380 FlexTester3 Software Update

See Software Resources to register and download the latest software update for your FLX380 FlexTester3.


For additional details and ordering information, download the FLX380 Specification Sheet.

*US patent 8,411,259


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