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Category 2 cable, also known as Cat 2, is a grade of unshielded twisted pair cabling designed for telephone and data communications. The maximum frequency suitable for transmission over Cat 2 cable is 4 MHz, and the maximum bandwidth is 4 Mbit/s. [1] [2] Cat 2 cable contains 4 pairs of wires, or 8 wires total. [3]
Anixter was started in 1956 by brothers Alan and Bill Anixter. Known originally as Anixter Brothers, the two opened Anixter as a wholesale distribution company that resold cable. The two brothers received a $20,000 loan from their mother to get the business started, and within 10 years grew revenue to $10 million. [4]
The UIC 568-cable and connector was first introduced along with the specifications for carriages built according to the UIC type Y (24.5 meters long, 8 cabins) and the UIC type X (26.4 meters long, 10 cabins), but have later on been used for variety of other passenger carriages, allowing mixing of InterCity (medium to long distances) and regional (short to medium distances) carriages.
Category 1 cable, also known as Cat 1, Level 1, or voice-grade copper, is a grade of unshielded twisted pair cabling designed for telephone communications, and at one time was the most common on-premises wiring.
Wire that is approved to BS 6231 might not carry the UL and CSA ratings, if, for example, the wire is not suitable for use at the higher 105 °C temperature that is specified for those ratings. In that case, the wire is not tri-rated. According to UL 758, the maximum operating temperature of tri-rated cable is 105 °C. British Standard BS 6231 ...
A wire or cable has a voltage (to neutral) rating and a maximum conductor surface temperature rating. The amount of current a cable or wire can safely carry depends on the installation conditions. The international standard wire sizes are given in the IEC 60228 standard of the International Electrotechnical Commission.
Telephone cable containing multiple twisted-pair lines. The primary line constants are parameters that describe the characteristics of conductive transmission lines, such as pairs of copper wires, in terms of the physical electrical properties of the line.
Starting with the first binder group in the center, the technician counts the cable's groups in a spiral direction depending on the location of the central office or switch. If looking at the cable's core and the switch is in that direction, the groups are counted counter-clockwise. If the cable is the field side, the count is clockwise. There ...
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