Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 231 z 288

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Technically, the “data volume” is, however, fact the data rate. VSWR The (VSWR) Voltage Standing Wave Ratio the ratio between outgoing and reflected wave. The critical point de- scribed the cut-off frequency fg. Capacitive and/or inductive component properties ensure signal damp- ing higher frequencies. Bandwidth The bandwidth (B) describes the difference mag- nitude between the two frequencies either end a frequency band. The bandwidth generally defined as the width the frequency band where power damping less than dB. If there mismatch, e. From this point on- wards, the signal has lost 50% dB) its input power. The data rate and bandwidth are often different from one another. The cut-off frequency determined according to certain measuring criteria. the absence any values, the cut-off frequency generally relates so- called systems. Cut-off frequency fg The cut-off frequency describes the frequency-de- pendent behaviour the arrestors. case open or short-circuited end cable, this can result the doubling cancellation the signal wave. Standing waves can occur if, for example, there terminat- ing impedance the cable, two cables differ- ent impedances are connected together, for example a Ohm coaxial cable with Ohm coaxial cable. Signal amplitude Frequency Cut-off frequency db Cut-off frequency fg TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 231 Chapter The internal lightning protection system . In data technology the bandwidth often described as the “data volume”.g.TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 Insertion loss Return loss Diagram: Insertion loss and return loss measured using a network analyser