Technical data
Connector type	standard
Number of fibres/ports	2 (Duplex)
Product type	Patch cable
Side A	LC/UPC (flat polish)
Conductor diameter in mm	3,0 mm
Fibre type	OS2_9/125u
Side B	LC/UPC (flat polish)
Length in metres	0.50 m

This product is an LWL patch cable from the brand Synergy 21, manufacturer's number S216247, designed for use in indoor network infrastructures. It is a duplex patch cable with a cable length of 0.5 metres, designed for connecting singlemode fibre optic components. The fibre type corresponds to the OS2 (G.652.D) standard with a core diameter of 9 µm and a cladding of 125 µm. The cable jacket is yellow, which, according to international standards, indicates singlemode fibre optic cable, and is made of halogen-free LSZH material, which emits low smoke and toxicity in case of fire. The conductor diameter is 3.0 mm, enabling a stable and mechanically robust construction.

Applications
This patch cable is intended for use in indoor environments, for example in data centres, server rooms, or for cabling network devices such as switches, routers, or patch panels. The use of singlemode fibres (OS2) makes it particularly suitable for long transmission distances with high bandwidth requirements, as commonly found in backbone connections or inter-data centre links. The yellow colour of the cable serves as a visual identifier and supports structured cabling.

Functions and Equipment in Detail
At both ends of the cable, LC connectors with flat polish (UPC) are installed. These connectors are designed for precise and reliable optical coupling. The connectors are fitted with blue protective caps to prevent contamination and damage. The cable ends are fitted with a white heat shrink tube, providing mechanical stabilisation and additional protection against tensile stress. The connectors are designed for easy installation into LC sockets, as commonly found in patch panels or network devices.

Technology Explained Simply
The OS2 (G.652.D) fibre type used is optimised for transmission over long distances and features low attenuation, preserving signal quality over extended lengths. The 9/125 µm fibre is designed for singlemode transmission, where only one light mode is guided through the fibre, enabling high bandwidth and minimal signal distortion. The LC/UPC connector ensures low insertion loss and high return loss, which is crucial for stable and reliable data transmission. Compliance with IEC 61753 Grade B and testing according to IEC 61300-3-4 and IEC 61300-3-6 guarantees the quality of the optical connection.

Compatibility and Accessories
The cable is compatible with all devices that support LC sockets for singlemode fibre optic. It can be combined with other LWL components, such as LC couplers (e.g. S215426 or S215483), patch panels (e.g. S216299V3 or S216298V3), or test equipment such as the LWL Fiber Checker (S215491V2). For maintenance and installation, accessories such as fibre optic cutters (S215662), cleaning pens (NP-FIBER21), or cable ties (S215680, S215696) are available. The use of appropriate tools and accessories is important for proper installation and maintenance of fibre optic infrastructure.

Installation and Mounting
Installation is carried out by simply inserting the LC connectors into the corresponding sockets of network devices or patch panels. The connectors feature a clip for secure locking. During installation, care should be taken to avoid excessive bending or stressing of the cable to prevent fibre damage. The use of cable organisers or cable ties (e.g. S215680) can help ensure neat and structured cabling.

Operational Advantages
The patch cable provides a reliable and stable optical connection with low losses, which is critical for network performance. The use of halogen-free material increases safety in case of fire. The yellow colour and standardised connectors facilitate identification and maintenance of cabling. The compact design with a length of 0.5 m is particularly suitable for short connections within server rooms or patch panels.