Archived 2016 Lapp Group International Catalog

Appendix Glossary

ÖLFLEX ® ACCESSORIES FLEXIMARK ® SILVYN ® SKINTOP ® EPIC ® HITRONIC ® ETHERLINE ® UNITRONIC ® APPENDIX

AS Abbreviation for Australian Standard.

the backscattered light using a beam splitter on the transmitter, it is possible to measure not only the length and damping of an installed light waveguide from one end but also local irregularities, e. g. light losses in splices. Backtwist The term relates to the stranding process. The technical design of the stranding machine twists the elements to be processed into a strand without torsion. BALUN Balun is a term combining “balanced” and “unbalanced”. Baluns are used for adjusting impedance and symmetry in the various transmis- sion media in copper grids. Banding Wrapping a bundle of wires with relatively narrow paper, textile, plastic or metal strips. Bandwidth Frequency range of a fibre optic cable within which data can be trans- mitted within a particular time frame. The greater the bandwidth, the more data that can be transmitted. The transmission speed depends on the bandwidth of the entire network. Bandwidth product The bandwidth product is what results when the bandwidth of a glass fibre cable is multiplied with the length of the measured section. Bandwidth-length product Measurement for the frequency range that can be transmitted by a fibre optic cable one kilometre in length. It is a constant value. BASEC Abbreviation for the British Approvals Service for Cables. Certification body – Great Britain and Northern Ireland. Basic raw materials In addition to the basic raw material, synthetic materials contain a range of other components such as stabilisers, softeners, filler and colour. Batteries Act The Battery Act came into force in 2009 and also covers the registra- tion and return of batteries. Battery cables Link between battery and generator in the engine. They are developed, manufactured and delivered in accordance with customer require- ments/product specifications. Baud Unit for a modulation rate in the transmission of communications. One step per second. 1 bit/s = baud, 1 Mbit/s = 1 Mbaud → see Bit Bel 1 Bel = 10 decibels. In highfrequency technology, the common unit of measurement for attenuation and, like decibel, a dimensionless ratio. Bending capacity The bending capacity indicates how far a product can bend without forfeiting function.

ASI (Actor-Sensor-Interface) Bus system for the lowest level of automation. Facilitates the simple connection of sensors, actuators and integrated systems to the first control level. See → Master-Slave principle. Up to 248 binary inputs and outputs per grid, one cable for information and energy, reversepolarity protected connection technology, 100 m cable length or up to 300 m with repeaters, open tree structure of grid, protection class up to IP 67, cycle time <5 ms, high immunity to interference and fault tolerance.

ASME Abbreviation for the American Society of Mechanical Engineers (USA).

Assembly A ready-to-install cable. It is cut to the appropriate length and fitted with connecting elements (plugs, cable lugs, etc.) at the ends.

ASTM Abbreviation for the American Society of Testing and Materials.

ATEX approval This approval is required for the intended use of devices and protection systems in areas at risk to explosions. Attenuation Attenuation is the reduction of the signal amplitude during transmis- sion to a medium. It increases with the rising frequency and cable length. The signal level is impaired in the process. Attenuation a The reduction of the optical signal power between two cross-sectional surfaces of a fibre optic cable due to losses. The unit of measurement is decibels (dB). Attenuation coefficient a The attenuation relative to the length of a fibre optic cable. The stand- ard unit of measurement is decibel/kilometre (dB/km). Automotive cable Vehicle cables are cores and cables used in passenger cars and trucks (e. g. ÖLFLEX ® TRUCK at Lapp). AWG Abbreviation for American Wire Gauge. Standard expression for the wire diameter. The smaller the AWG value, the bigger the wire diameter. The actual values (mm) depend on the core resolution, regardless of whether a fixed conductor or a strand is used.

AWM UL marking for Appliance Wiring Material.

B Backbone

Backbone or secondary wiring is the connection between the building distributor and the individual floor distributors in a structured wiring system. Backscatter A small fraction of the light that is deflected from its course due to dispersion travels in a reverse direction, i. e. in the light waveguide back to the transmitter. By observing the chronological progression of

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