Multimode Encircled Flux compliant test reference cord kitCord Length: 2 mFor testing 62.5 um ST terminated fibers (2 SC/ST, 2 ST/ST With an overfilled launch, you could end up with a pessimistic result, as the modes are being lost in the cladding at launch. Likewise, an underfilled launch results in an optimistic result since many of the modes are not excited. Even if you use reference grade test cords and strict referencing procedures, your reported optical loss of a fiber link will depend on how that light was launched into the fiber. Multimode Fiber Test Reference Cord Fluke Networks 4320255 Model MRC 625 EFC SCST Multimode Encircled Flux Compliant Test Reference MRC-625EFC-SCSTKIT For Certifiber Pro Test reference cord used in conjunction with Fluke Networks Encircled Flux multimode compliant sources. Contains: 2 SC/ST EF-TRCs and 2 ST/ST TRCs Prior to EF, ANSI/TIA defined the launch condition using a technique called Coupled Power Ratio or CPR. Failing to specify the launch conditions correctly can result in a measurement uncertainty as high as 60%. Encircled Flux explained in 60 seconds | Fluke Networks Each cable is 2 meters
