General
Plug-in assembly	LC

The Softing FiberXpert 700 Multimode LC test cable kit (type FX_700_AC_MM_LC_KIT, manufacturer number 228306) is an accessory set for precise measurement and analysis of multimode fiber optic links in LC connector systems. It serves as reference and test equipment for use with the FiberXpert 700 network tester and enables insertion loss and back reflection measurements on multimode fibers. The kit is specifically designed for applications in IT infrastructure, during installation and maintenance of fiber optic cable systems, as well as for quality control of fiber links.

Applications
This test cable kit is used to check the optical properties of multimode fiber optic cables, particularly during installation of new systems, maintenance of existing systems, or troubleshooting. It is suitable for applications in data communication where high accuracy in measuring signal losses and reflections is required. The components of the kit are optimized for use with LC connectors, which are widely used in modern networks.

Functions and equipment in detail
The kit contains several specific components required for reference measurements: a mandrel (item number 228018), which is used to simulate fiber geometry and generate a defined mode distribution, and two LC-LC couplers (item number 228301), which serve as connection elements between the test cables and the cable under test. Additionally, the set includes a mode-transparent reference test cable LC-SC (item number 228302) and two mode-transparent reference test cables LC-LC (item number 228303). These cables are designed to not alter the mode distribution of the fiber, which is crucial for reproducible and accurate measurements.

Technology explained simply
The mode-transparent test cables ensure that the light distribution in the fiber core remains unchanged during measurement. This is important to avoid measurement errors caused by mode conversion. The mandrel is used to hold the fiber in a defined bend, standardizing the mode distribution and thus ensuring comparability of measurement results. The LC-LC couplers enable a secure and stable connection between the test cables and the cable segment under test, making the measurement precise and reproducible.

Compatibility and accessories
The kit is specifically developed for use with the FiberXpert 700 network tester from Softing IT Networks. The included components are designed for multimode fiber optic links and support measurement in LC connector systems. No additional accessories are required to use the tester’s measurement functions with this kit. The components are dimensioned to connect directly to the FiberXpert 700 without requiring additional adapters or conversions.

Installation and mounting
Mounting is done by simply connecting the test cables via the LC-LC couplers to the cable section under test. The mandrel is inserted into the test cable to hold the fiber in the defined bend. Cable connections are made using LC connectors, ensuring a secure and durable connection. Installation requires no special tools or additional mounting aids.

Advantages in operation
Using the FiberXpert 700 Multimode LC test cable kit ensures high measurement accuracy and reproducibility. The mode-transparent cables and mandrel minimize measurement errors that could arise from changes in mode distribution. The components are robust and designed for professional use, enabling long service life and reliable results even with frequent use. The combination of mandrel, couplers, and reference cables provides a complete solution for quality control of multimode fiber links.