BICSI Installer 2 Copper Study

BICSI Installer 2 Copper Study - Endothermic: Refers to the ability of a material to absorb heat. - Near End Crosstalk (NEXT): One of the types of crosstalk in balanced twisted pair cables where the interfering signal is transmitted from the near end of the cable. - Attenuation to Crosstalk Far End (ACRF): Another type of crosstalk in balanced twisted pair cables, measuring the attenuation caused by crosstalk at the far end of the cable. - Alien Crosstalk: Refers to interference caused by signals from one cable pair inducing noise in another nearby cable pair. - Intumescent: Describes the ability of a material to expand when exposed to heat. - Simplex: A transmission method where data flows in only one direction. - Half Duplex: A transmission method where data can flow in both directions, but only one direction at a time. - Direct Current (DC): Refers to an electrical current that flows consistently in one direction without changing polarity. Frequency ️1 cycle in 1 s = 1 Hz Full duplex ️Transmit signals in both directions at the same time Capacitance 1 ️Properties of conductors that allows storage of electric charges when potential differences (voltage) exist between the Conductors Capacitance 2 ️Causes a voltage difference between two wires when separated by insulation Capacitance is measured in ️Farads Picofarads is ️One trillions of a farad What are 3 types of Bus Bars ️Primary Bus Bar (PBB) Secondary Bus Bar (SBB) Rack Bus Bar (RBB) Electrical power measured in watts has two variations as known as ️Apparent or reactive power and true (real) power. The basic unit of digital information is a ️Bit The POTS signal range is transmitted between __________Hz which is regarded as the minimum range for human speech to be audible and recognizable. ️300 and 3400 Megahertz ️_______ - quantifies the bandwidth of a cable system in a frequency range of interest Megabit ️______- refers to the number of bits of information that can be transported over the media DIGITAL TRANSMISSION When a device First starts a transmission it will employ a nominal bass voltage of some level of volts. Example 24 V. A pulse of +3 V would indicate ______ and the line voltage would rise from 24 V to 27 V. When the voltage level returns to the 24 V base, it would represent an ____