Copper unscreened
Skin effect
The higher the signal frequency, the closer the current flows the outside the cable. Although they are small this discontinuity the line construction causes reflections voltage waves and current waves. Therefore, values differ along the length the cable. =
Copper screened
RML (Restricted Mode Launch Bandwidth (RML BW)
RML Bandwidth test procedure standardizied both TIA/EIA 455-204 (FPTP 204) and IEC 60793-1-41. The resulting bandwidth measurement predicts laser performance for intermediate- bandwidth systems (up 850 MHz. RML restricts overfilled launch through 23,5 micron Patchcord, which turn measures the bandwidth capability fiber’s low and intermediate mode groups. Results these reflections are: Reflection coefficient Relation between transmitted (regular) and received (reflected) Voltage- current wave the discontinuity points. This factor indicates the usefulness lines. Return Loss (RL) Logarithm the reciprocal value the reflow factor high Return Loss only can reached the highest production precision and extremely little production tolerances (high homogeneity) and therefore quality characteristic. The coupling resistance determined the construction the screen, the skin effect and the capacitive coupling.km) the same way and with the same level accuracy OFL predicts LED performance legacy-bandwidth systems.
Informations
Accessories
Systems
U-280
Copper
Technical changes reserved. high frequencies the current flows through the very outer molecules the wire. Reflow factor Sum all reflections having effect the line beginning (transmitted wave).
Fibre optic
Transfer Impedance (Coupling resistance)
The Transfer Impedance the main parameter for the quality the screen and frequency dependant.Technical terms used data cable technology
Communication technology
Return Loss (RL)
The transmission performance data cable has tolerances caused different dielectric constants for the insulation, with unavoidable production differences along the cable’s length. The relation between the voltage drop along the screen the disturbed lengthways side (outer) the interfering current the other side (inside) the screen.
