Serial digital video LSZH ecoflex

This range comprises industry standard 4.50mm serial digital video cable and a low loss version with an overall diameter of 6.80mm for extended transmission lengths, available in 1 colour only. As this cable requires a solid centre conductor there is no benefit to be gained in manufacturing a PVC type for enhanced flexibility so in common with most other UK suppliers this range is available only in Low Smoke Zero Halogen (LSZH). Please note also that the specification of this cable will be subject to further improvement during the life of this catalogue as the manufacture of the cable insulation is moving to precision gas blown foam skin polyethylene – please contact the sales office for updates.

Materials
Van Damme now use a higher purity oxygen free copper for the conductors - Ultra Pure Oxygen Free Copper. The use of this material further improves the conductivity of the cable resulting in faithful and accurate picture information transmission. Foam skin polyethylene is used for the conductor insulation. This special insulation is made up of individual pockets of inert gas suspended in polyethylene, resulting in a low dielectric constant and most importantly low capacitance. The skin refers to the outer layer of the insulation, which forms during the extrusion process. This skin is harder than the layer of insulation below it ensuring that the conductor is well protected. The dielectric constant of foam skin polyethylene remains stable over a wide frequency range, essential for transmission of digital signals. Other relevant properties include good stress and temperature resistance. Both types of cable are dual screened with an aluminium polyester foil overlaid with a braided bare copper screen with 94% optical coverage. This dual screen is essential in order to achieve the required attenuation at the higher frequencies associated with digital video signals. The cables are oversheathed with a special LSZH thermoplastic compound SHF-1. This compound adheres to the regulations laid down in IEC 60092-359 for halogen free materials for telecommunications cabling in shipping.

Applications
• Transmission of serial digital video signals- also suitable for analogue video
• Low loss type for extended distances can also carry HDTV signals up to 70 metres
• LSZH jacket for installation into public buildings
• Use of precision 75 Ohm components throughout the signal chain is strongly recommended