The DSP-4100 is now obsolete and has been replaced with the DSX-5000.
View the DSX-5000
Test Fiber Optic Cables
When paired with the optional Fluke DSP-FTK Fiber Test Kit, the DSP-4000 series detects bad connections, bad splices, broken fibers, and loss of power from bends and fiber-type mismatches.
Windows based DSP-LINK software brings "point and click" simplicity to the task of transferring data or updating your DSP-4000 series analyzer.