glossary category

See heat, total

The ratio of net equipment cooling capacity in BTU/h to total rate of electric input in watts under designated operating conditions. When consistent units are used, this ratio becomes equal to COP (see also coefficient of performance)

A system attached to a LAN that is an initial source or a final destination of MAC frames transmitted across that LAN. A network layer router is, fro the perspective of the LAN, an end station. A MAC bridge, in its role of forwarding MAC frames from one LAN to another, is not an end station (see IEEE 802.3, Clause 43)

Electromagnetic interference

The sudden flow of electricity between two objects at different voltage potentials. ESD is a primary cause of integrated circuit damage or failure

Electronic equipment that is directly cooled by liquid

Electronic equipment that is directly cooled by air

Electronic equipment that uses both air and liquid

An EC motor is a DC motor with a shunt characteristic. The rotary motion of the motor is achieved by supplying the power via a switching device, the so-called commutator. On the EC motors, this commutation is performed using brushless electronic semiconductor modules

The ability of electronic equipment or systems to operate in their intended operational environments without causing or suffering unacceptable degradation because of electromagnetic radiation or response