Search results
Results from the WOW.Com Content Network
A thicknet MAU. The vampire tap on this specimen is still attached to a piece of "frozen yellow garden hose" 10BASE5 network cable, which has been cut. A thinnet MAU, showing a single BNC and a DA15 connector. Two Medium Attachment Units (MAUs). The units shown are backwards compatibility-oriented 10BASET MAUs, not older 10BASE5 or 10BASE2 MAUs.
The first Ethernet standard, known as 10BASE5 (ThickNet) in the family of IEEE 802.3, specified baseband operation over 50 ohm coaxial cable, which remained the principal medium into the 1980s, when 10BASE2 (ThinNet) coax replaced it in deployments in the 1980s; both being replaced in the 1990s when thinner, cheaper twisted pair cabling came to dominate the market.
This shift led to the decline of 10BASE5 (thicknet) and 10BASE2 (thinnet) which made use of the interface. [6] [7] The electrical AUI connection remained internally within equipment for some time. With the introduction of Fast Ethernet, the AUI interface became obsolete and was replaced by the Media Independent Interface (MII). [8]
Through the first half of the 1980s, Ethernet's 10BASE5 implementation used a coaxial cable 0.375 inches (9.5 mm) in diameter, later called thick Ethernet or thicknet. Its successor, 10BASE2, called thin Ethernet or thinnet, used the RG-58 coaxial cable. The emphasis was on making installation of the cable easier and less costly.
A 100BASE-TX transmitter sends three differential voltages, +1 V, 0 V, or −1 V. [15] Unlike earlier Ethernet standards using broadband and coaxial cable, such as 10BASE5 (thicknet) and 10BASE2 (thinnet), 10BASE-T does not specify the exact type of wiring to be used but instead specifies certain characteristics that a cable must meet. This was ...
Additionally, Apple 10BASE2 cables terminate the network when no device is attached to them. Thus the number of mistakes that could be made hooking up a thinnet network is reduced considerably. Since any of these mistakes can disable the network segment, this presents a significant improvement. FriendlyNet equipment was expensive.
The maximum practical number of nodes that can be connected to a 10BASE2 segment is limited to 30 [4] with a minimum distance of 0.5 metres (20 in) between devices. [5] In a 10BASE2 network, each stretch of cable is connected to the transceiver (which is usually built into the network adaptor) using a BNC T-connector , [ a ] with one stretch ...
The original 2.94 Mbit/s Ethernet implementation had eight-bit addresses and other differences in frame format. [9] 10BASE5: 802.3-1985 (8) AUI, N, vampire tap: 500 m RG-8/U Original standard uses a single coaxial cable in which a connection is made by tapping into the single cable, drilling in to make contact with the core and the screen.