standards and guidelines for communication sites - Radio And ...

STANDARDS AND GUIDELINES FOR COMMUNICATION SITES GLOSSARY
Non-Linear Load: Steady-state electrical load that draws current discontinuously or whose
impedance varies throughout the cycle of the input AC voltage waveform (IEEE STD 1159-R2001).
Notch Filter: A band-reject cavity filter designed with a high Q resonant circuit to attenuate a narrow
band of frequencies while allowing all other frequencies to pass through with only a slight loss of signal
strength.
NRC: Nuclear Regulatory Commission
Operating Temperature: Temperature within an equipment case, with the equipment operating at a
given capacity or load.
ORV permit: Off-road vehicle permit. A permit that grants the holder the right to drive a motorized
vehicle through areas inaccessible by road.
OSHA: Occupational Safety and Health Administration: United States federal government regulatory
agency responsible for standards regarding personnel safety at commercial and industrial sites.
Paging: A one-way communication system in which the receiving unit is sent a digital message.
Paging can be provided as a PCS service.
PANI: Surge energy Producers, Absorbers Non-isolated equipment and Isolated equipment. A method
of bonding conductors to the MGB in a specific order, depending on their origin.
PCS: Personal Communication Services.
Personal Communication Services: A digital communications system that provides data services
such as messaging and paging as well as digitized voice.
PERT chart: Program, Evaluation, and Review Technique chart. A flowchart showing the
relationship and sequence of events comprising a project.
Plat book: A document that depicts the legal ownership of specific parcels of land, usually in relation
to a county, township, section, or range.
Plenum: A compartment or chamber to which one or more aid ducts are connected and that forms part
of the air distribution system.
Point of entrance: The point of emergence through an exterior wall, a concrete floor slab, or from a
rigid metal conduit or an intermediate metal conduit effectively bonded to a ground electrode system.
Pulse method: A method for tower guy wire tensioning.
PSTN: Public Switched Telephone Network.
QA/QC: Quality Assurance/Quality Control.
R56: The Motorola committee responsible for enacting standards related to communication site
construction and installation practices. R56 also refers to the literature distribution number formerly
used for this manual, Standards and Guidelines for Communications Sites (PN 68P81089E50).
Rack: A standard equipment rack used for supporting communications equipment installed in an
existing Building or Shelter.
Rack Ground Bus Bar: A single bus bar to which all equipment ground wires are bonded within a
single equipment rack.
RF: Radio Frequency.
RFDS: RF Distribution System.
68P81089E50-B 9/1/05 1-19