A hardware device with a single bus and many connections A concentrator can send many input channels out to fewer output channels and can store the input data until an output channel becomes available When employed as a hub, a concentrator is a termination point for the cables connected to nodes in the network, and forms the basic topology of the network Concentrators may also connect different network elements with different cabling schemes or architectures A concentrator may also include a processor, network monitoring features, and many boards (each functioning as one hub)
permits you to position machines closer together on the network cable than you could otherwise If you use a twisted-pair cable, you need a concentrator
A type of station defined in the fiber distributed data interface (FDDI) station management (SMT) standard Concentrators can be connected to other concentrators to form a single-ring/tree offshoot from the main dual ring Concentrators are used to divide a data channel into two or more channels of average lower speed, dynamically allocating space according to demand, to maximize data throughput at all times Also called an intelligent time division multiplexer (TDM), asynchronous time division multiplexer (ATDM), or statistical multiplexer
A concentrator is a telecommunications computer that collects and temporarily stores messages from the terminals for batch transmission to the host computer
a device which allows a number of stations to be connected to a LAN In the case of Ethernet, it is simply a multi-port repeater In the case of ring networks like Token Ring and FDDI, it acts as a switch which keeps the ring intact even if individual devices are unplugged
A PV module that uses optical elements to increase the amount of sunlight incident on a PV cell Concentrating arrays must track the sun and use only the direct sunlight because the diffuse portion cannot be focused onto the PV cells Efficiency is increased, but lifespan is usually decreased due to the high heat
A device that feeds the signals from several data sources into a single Transmission line
A means of connecting a number of data communication devices and concentrating packets of data at a local point before onward transmission on a single link to a central data processor or information management system In contrast to multiplexors concentrators usually have a buffering capability to 'queue' inputs that would otherwise exceed transmission capacity See also Multiplexor
a plant for recovery of valuable minerals from ore in the form of concentrate The concentrate must then be treated in some other type of plant, such as a smelter, to effect recovery of the pure metal
LAN equipment that allows multiple network devices to be connected to the LAN cabling system through a central point Sometimes called a "hub"
A communications device that allows a shared transmission medium to accommodate more data sources than channels currently available within the transmission medium
A device which provides communications between multiple slower asynchronous channels and a smaller number of faster, usually synchronous, channels The concentrator allows a shared transmission medium to accommodate more data sources than channels available on the medium Also referred to as an intelligent TDM, ATDM or statistical multiplexor Used to save money on transmission
a collector that enhances solar energy by focusing it onto a smaller area through mirrored surfaces or lenses
A tool that uses lenses and/or mirrors to focus and enhance the sun's rays onto the photovoltaic surface
A lens or optical device that concentrates solar power onto a bank of photovoltaic cells They track the sun to be able to focus direct sunlight Concentrators increase efficiency by increasing power flux, but usually reduce photovoltaic life span because of high heat
A financial institution or a third party service provider that has been retained by a biller to handle payment and/or remittance data
A mill or plant in which minerals are separated from waste rock, usually containing grinding mills where the ore is ground and flotation cells where the mineral concentrate is extracted
A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose
An FDDI node that has additional Ports beyond those required for its own attachment to an FDDI network These additional ports (type M) are for attaching other FDDI nodes (including other concentrators) in a tree topology
Device used in a LAN to combine transmissions from a cluster of nodes; often called a hub
An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air
A central chassis into which various modules, such as bridging, supervisory, 10BaseT and other peripheral cards are plugged
An FDDI node that provides additional attachment points for stations that are not part of the dual ring (SMFPMD) (PMD) An FDDI node that has additional points beyond those required for its own attachment to an FDDI network These additional ports are for attaching other FDDI nodes (including other concentrators) in a tree topology (SMT) A node on the FDDI ring, which in turn provides connections for additional conforming FDDI stations so that they may communicate with other attachments to the FDDI ring A concentrator has physical layer entities and may or may not have one or more data link layer entities
A device that provides a central connection point for cables from workstations, servers, and peripherals Most concentrators contain the ability to amplify the electrical signal they receive
Any communications device that allows a shared transmission medium to accommodate more data sources than there are channels currently available within the transmission medium