Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 116)

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AppendixJ
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impedance match: a condition whereby an impedance of a particular circuit,
cable or component isthe same asthe impedance of the circuit, cable or device
to which it isconnected.
jack: a connecting device into which a plug can be inserted to make circuit
connections.
jacket: the outer sheath which protects against the environment and may also
provide additional insulation.
maximum recommended pulling tension: the maximum load which can be
applied along the axisof a cable without breaking the fibers.
microbend loss: attenuation caused by excessive cable bending or
manufacturing flaws.
micron: one millionth of a meter or 0.000039 inch.
minimum bend radius: the smallest radius to which a cable can be bent without
damaging the fiber.
mismatch: a condition whereby an impedance of a particular circuit, cable or
component isnot equal the impedance of the circuit, cable or device to which it is
connected.
optical power: the power emitted from a light source into a fiberĆoptic cable;
defined in watts but usually expressed in decibels.
optical power budget: the total amount of optical power available from the
fiberĆoptic transmitter less the losses present in the fiberĆoptic link.
plug: a movable portion of a coaxial RF connector attached to a cable or
removable assembly.
raceway: any channel designed expressly and used solely for holding wires and
cables.
reflections: return of the radio frequency energy towardsthe source which is
caused by an impedance mismatch along the transmission path.
RG: a symbol used to designate coaxial cables made to a government
specification.
shield: a sheet, screen or braid of metal (usually copper, aluminum, or other
conducting material) usually placed between a dielectric and a jacket of a coaxial
cable.
surge: a temporary and relatively large increase in the voltage or current in an
electric circuit or cable.
transceiver: a module composed of a transmitter and receiver.