Universal Asynchronous Receiver-Transmitter. A semiconductor device that sends and receives digital data.
Thermoplastic underground feeder and branch circuit cable.
Symbol for coaxial connectors that are made to government specification.
See also RG/U.
Ultra High Frequency. The band that extends from 300 to 3,000 mc, as designated by the Federal Communications Commission.
An input/output electronic interconnect device designed to work at frequencies up to 300 gigahertz at voltages to 500 V.
Underwriters Laboratories. A US organization that sets certain standards for connector testing.
The highest flammability rating developed by UL. Indicates a housing material's ability to extinguish a flame in the event of a fire.
A lower flammability rating developed by UL and applied to connector housings. Flames on a housing made of this material would take longer to extinguish than those on material rated UL 94V-0.
Process of joining materials by the scrubbing action and energy transfer of a tool that vibrates at an ultrasonic frequency (around 20 kHz for plastic; range of 60-120 kHz for metal). The energy transfer efficiently results in the heating of a material for bonding when the material innately possesses sufficient internal lossiness or friction to convert mechanical energy into irreversible heat energy during each cycle of tool forced vibration.
Cleaning operation that uses ultrasonic vibration and agitation. It is used at various stages in the connector overmolding process.
A single-ended transmission line in which the absolute difference of the voltages on the two conductors (of signal and ground return current shield, respectively) are unequal with respect to ground potential.
A coaxial transmission line is an example of an unbalanced single-ended line. In contrast, a "twinax" design is an augmented or enhanced coax-like line constituting a differential line design with a pair of signal wires that create the double-ended line. In the latter design the absolute difference in voltage between one of the pairs and ground is equal (balanced) to that of the other pair and ground.
See also Balanced Line.
See UL.
The one directional mounting of a connector. Press-fit connectors, for example, use uniaxial assembly. This is a one direction motion of pushing the pins through the board. It is all that is required to mount the connector.
The variation of power level between the optical outputs of a splitter.
A negative resistance semiconductor switch used for timing circuits, oscillators, and triggering circuits.
Multiple layers of helically laid wires with the direction and length of lay being the same for all layers.
See USB.
See Header.
Microprocessor.
Weatherproof wire.
Universal Serial Bus. A serial bus standard developed by PC and Telecom industry leaders Compaq, DEC, IBM, Intel, Microsoft, and Northern Telecom.
USB brings "plug and play" to computer peripherals. Specialized cards are not needed and integrated software eases installation of new devices. Many devices may be serially connected on a single port.
Underground service entrance cable, rubber insulated neoprene jacket.
User
Friendly Socket and Carrier
A cost effective method for interchanging IC devices, useful wherever field replacement, updating, or reprogramming is required of microprocessors, ROMs, PROMs and EPROMs.