General
Wavelengths	850/1300/1310/1490/1550/1625/1650 nm

The CableMaster FO from Softing IT Networks is a compact, portable optical power meter in pocket format, specifically designed for testing and diagnosing fibre optic networks. It is used for power and attenuation measurement at various single-mode fibre (SMF) interfaces to ensure network performance. The intuitive operation enables easy use for both experienced technicians and beginners. The device supports display in multiple units – dBm, dB and mW – with the display freely selectable to adapt to specific requirements and measurement conditions.

Applications

The device is suitable for testing passive fibre optic cabling as well as measuring transmit power at active fibre optic connections. It is particularly used during installation and maintenance of FTTX broadband networks, where precise determination of optical power and attenuation is critical. The integrated visual fault location function supports locating breaks, contamination, or incorrect connections in the fibre. Polarity checking is also possible, which is important when setting up bidirectional transmissions.

Functions and Equipment in Detail

The CableMaster FO captures power data at seven different wavelengths: 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, 1625 nm and 1650 nm. This coverage enables use in various network environments, including FTTH, FTTB and other FTTX applications. The integrated Visual Fault Locator (VFL) function projects a visible red light into the fibre to visually detect faults such as breaks or contamination. Additionally, a built-in flashlight is included in the device, which is helpful during inspection of connections or connectors.

Technology Explained Simply

The device operates as an optical power meter that measures incoming light power in the fibre and displays it in the specified units. The measurement is performed via an integrated sensor calibrated for the respective wavelength. Support for multiple wavelengths allows adaptation to different network standards and applications. The visual fault location (VFL) uses a red laser light coupled into the fibre to make optical faults along the path visible. The integrated flashlight serves general illumination during inspection of connectors or cable runs.

Compatibility and Accessories

The device is equipped with a 2.5 to 1.25 mm ferrule adapter, enabling connection with various fibre optic connectors. This adapter is included in the delivery scope and extends compatibility with common fibre connectors. The use of AAA Ni-MH batteries (1.2V) is intended, with three of these batteries included in the delivery scope. A USB cable is also included in the delivery scope, enabling data transfer or charging of the device. The device manual is also included in the delivery scope and provides instructions for operation and maintenance.

Mounting and Installation

The device is directly connected to the fibre optic connector, with the integrated adapter enabling connection to various connector types. Measurement is performed without additional mounting or installation – the device is simply connected to the fibre to be tested. Operation is performed via the integrated user interface, which allows selection of wavelength, display unit and measurement functions.

Operational Advantages

The combination of compact design, integrated VFL function and support for multiple wavelengths makes the device a versatile tool for fibre optic diagnostics. The simple operation and integrated flashlight increase efficiency during inspection and maintenance. The ability to choose display in dBm, dB or mW offers flexibility in interpreting measurement results. The device is designed for field installation, with integrated power supply via AAA batteries ensuring mobility.