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Control Training and Service Manual
Prefill: The period of time between when the water begins to fill the pan and the
humidifier lamps turn on
Program: A set of instructions to achieve a certain result
PROM: Programmable Read-Only Memory; an Integrated Circuit (IC) memory
chip whose stored data can be read at random (The IC can be used only one
time.)
RAM: Random-Access Memory where work can be written (stored) or read
(recovered) in any order
Remote: Component(s) or control(s) located at a distance away from the main
components or controls
Reset: To return a control to its original position
ROM: Read-Only Memory: the location reserved for data permanently stored by
the manufacturer
Soft Ground: A connection to ground through an impedance sufficiently high to
limit current flow to safe levels for personnel (Impedance needed for a soft ground
is dependent upon the voltage levels that can be contacted by personnel near the
ground.)
Software: A set of computer programs, procedures and possible associated
documentation concerned with the operation of a data processing system
Static-Dissipative Material: Electrostatic protective material having surface
restiveness greater than 10
4
but not greater than 10
9
Ohms per square inch
Static-Shielding Material: Material that does not allow spark energy or
electrostatic fields to pass through or penetrate it
Surface Resistivity: An inverse measure of the conductivity of a material and
equal to the ratio of the potential gradient to the current per unit width of the
surface where the potential gradient is measured in the direction of current flow in
the material (Surface resistivity is numerically equal to the surface resistance
between two electrodes forming opposite sides of a square. The size of the
square is immaterial. Its value is measured in Ohms per square inch.)
Transformer: Electromagnetic device for changing the voltage of an AC circuit by
induction and/or isolating an AC circuit from its distribution
Triboelectric Effect: The generation of static electricity on an object by contact,
separation or friction
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