General
Battery voltage	1,2 V

The Softing PD_CMVFL is a fibre optic red light source, also known as a Visual Fault Locator (VFL), specifically developed for fault detection in optical fibres (OF). The device is used to verify the correct polarity of an OF link as well as to locate breaks, cracks, or poor connections in fibre optic cables. Due to the visible red light emission, the technician can visually trace the light path and quickly identify fault locations. The PD_CMVFL is a compact, handheld device designed for use in the field and during installations in the field of network and telecommunications technology.

Applications

The red light source is primarily used in the field of fibre optic installation and maintenance. It enables testing of OF connections, especially in complex networks where visual inspection of light propagation is necessary. The device is applied during commissioning, maintenance, and fault detection of fibre optic cables in data and communication networks. It is particularly useful for checking connection polarity, as the light direction directly reflects the data transmission direction. It is also used to locate breaks or contamination in the fibre, which can be identified by interruption of the light beam.

Functions and Equipment in Detail

The device generates a visible red light beam that is transmitted through the fibre optic cable. The light source is designed to ensure high visibility of the light path, even over long distances. The PD_CMVFL is equipped with an integrated adapter for various connector types to ensure universal use. The delivery includes the main unit, three AAA Ni-MH batteries with a voltage of 1.2 V, an instruction card, an adapter 226111 (2.5 mm to 1.25 mm ferrule), and an FC adapter 226113. The batteries enable mobile use without external power supply. The instruction card provides basic operating instructions for safe and correct handling of the device.

Technology Explained Simply

The technology of the PD_CMVFL is based on emitting red light that is coupled into the fibre optic cable. The light is guided along the cable and becomes visible at breaks, contamination, or ends. The light source operates at a wavelength suitable for most fibre optic cables and ensures good visibility. The use of Ni-MH batteries ensures sufficient operating time and reusability. The integrated adapters allow adaptation to various connector types, making the device flexible in use. The construction is robust and designed for field use.

Compatibility and Accessories

The PD_CMVFL is equipped with a 2.5 mm to 1.25 mm ferrule adapter (226111) and an FC adapter (226113), enabling connection to various fibre optic connectors. These adapters are included in the delivery and extend the device's compatibility. The use of these adapters is necessary to adapt the device to different cable types.

Mounting and Installation

Mounting is done by simply inserting the device into the fibre optic connector. The adapters included in the delivery allow adaptation to various connector types. Operation is guided by the instruction card, which describes basic steps for commissioning and use. No additional tools or installation steps are required. The device is immediately ready for use as soon as the batteries are inserted.

Advantages in Operation

The PD_CMVFL offers fast and visual fault diagnosis in OF networks. The integrated adapters increase flexibility and enable use with various cable types. The use of rechargeable Ni-MH batteries reduces operating effort and costs for replacement batteries. The compact design and simple operation make the device a practical tool for technicians in the field. The visible light emission enables precise fault location, reducing maintenance time and increasing the efficiency of network maintenance.