Technical data
Connector type	standard
Product type	Patch cable
Side A	LC/UPC (flat polish)
Number of fibres/ports	2 (Duplex)
Length in metres	1 m
Fibre type	OM2_50/125u
Side B	ST/UPC (flat polish)

This product is an LWL patch cable from the brand VDE-Kabel, manufacturer's number O0321.1, designed for use in indoor network infrastructures. It is a duplex patch cable with a cable length of 1 meter, designed for connecting fiber optic components in data transmission systems. The fiber type is multimode with a gradient profile of 50/125 µm, corresponding to the OM2 standard, enabling high bandwidth and transmission performance over medium distances. The connector configuration consists of an LC/UPC connector on one end and an ST/UPC connector on the other end, both featuring a flat polish (UPC) that ensures low reflection and high signal quality.

Applications
This patch cable is intended for indoor use, for example in data centers, server rooms, or for cabling network switches, patch panels, and other fiber optic components. The OM2 fiber type is particularly suitable for applications with data rates up to 1 Gbit/s over distances of approximately 550 meters, with the exact range depending on the network technology and signal quality used. The combination of LC and ST connectors allows flexible connection to existing infrastructures using different connector types.

Functions and Equipment in Detail
The cable features a duplex structure, meaning two fibers are laid in parallel to enable bidirectional data transmission. The fibers are implemented as multimode gradient fibers, allowing light to travel in multiple modes and achieving higher bandwidth compared to singlemode fibers. The LC and ST connectors are standardized and widely used in the IT and telecommunications industry. The LC connector is compact and commonly used on switches and servers, while the ST connector is often found on patch panels or older devices. Both connectors feature UPC flat polish, which ensures low backscatter and thus improved signal transmission.

Technology Explained Simply
The fiber type OM2 (50/125 µm) is a multimode fiber in which light is guided through a core with a diameter of 50 µm, surrounded by a cladding with a diameter of 125 µm. This construction enables efficient light guidance and is particularly suitable for short to medium distances. The designation OM2 refers to the standards for multimode fibers defined by TIA/EIA. The UPC finish of the connectors (Ultra Physical Contact) ensures that the fiber ends are flat and parallel to each other, enhancing signal quality. The cable length of 1 meter is ideal for use in confined spaces such as server rooms or patch panels, as it provides sufficient flexibility without being unnecessarily long.

Compatibility and Accessories
The cable is compatible with devices supporting LC and ST connector interfaces. It can be connected, for example, to LWL patch panels with LC duplex sockets or to switches with ST ports. Suitable accessories include LWL couplers, such as LC socket/LC socket for 50/125 µm multimode, as well as cleaning pens for SC/FC/ST/E2000 connectors. For installation and maintenance, tools such as fiber cutters, stripping pliers, and cable ties are appropriate. Additionally, fiber optic attenuation measurement kits for multimode or singlemode links can be used to check signal quality.

Installation and Mounting
Installation is performed by simply inserting the connectors into the corresponding sockets on the devices. The connectors are mechanically robust and provide a secure connection. During installation, care should be taken to avoid excessive bending or stressing of the fibers to prevent damage. The cable length of 1 meter provides sufficient slack for cabling in standardized 48,3 cm ( 19 inch ) racks or server rooms. The use of cable ties or cable organizers can improve order and accessibility.

Operational Advantages
The patch cable provides reliable and stable data transmission over short to medium distances. The use of OM2 fiber ensures high bandwidth, sufficient for modern network applications. The combination of LC and ST connectors enables flexible integration into existing infrastructures. The UPC finish of the connectors minimizes reflections and improves signal quality. The cable is designed for indoor use and is suitable for professional IT environments.