Electronics Technical Information Abbreviations & Acronyms A-D: Analog to digital conversion CEN: European Committee for Standardization E: Symbol for voltage. Usually used to represent ac: Alternating current CENELEC: European Committee for direct voltage or the effective (root-mean-square) AC: Armored Cable, NEC Article 333 Cable Electrotechnical Standardization value of an alternating voltage Designation CFC: Communications Flat Cable EFTS: Electronic funds transfer system AC0: Analog Central Office ckt: Circuit EIA: Electronic Industries Association ACR: Attenuation to Crosstalk Ratio CLT or CLOS: Closet EMF: Electromotive Force ADO: Auxiliary Disconnect Outlet CL2: Class 2 Circuit Cable, NEC Article 725 Cable EMI: Electromagnetic Interference AER: Aerial Designation EMT: Electric Metallic Tubing AF: Audio frequency CL2P: Class 2 Circuit Plenum Cable, NEC Article EP: Entrance point AIA: American Institute of Architects 725 Cable Designation EPDM: Ethylene-propylene-diene monomer rubber ALPETH: An aerial telephone cable having an alu- CL2R: Class 2 Circuit Riser Cable, NEC Article 725 EPOS: Electronic Point-Of-Sale minum shield and polyethylene jacket Cable Designation EPR: Ethylene-propylene rubber ALS: A type of cable consisting of insulated con- CL2X: Class 2 Circuit Limited Use Cable, NEC ER: Equipment room ductors enclosed in a continuous, closely fitting Article 725 Cable Designation ESS: Electronic Switching System aluminum tube CL3: Class 3 Circuit Cable, NEC Article 725 Cable ESTA: Australian approval agency; Electricity Trust ALVYN: An indoor, riser rated telephone cable hav- Designation of South Australia ing an aluminum shield and vinyl jacket (PVC) CL3P: Class 3 Circuit Plenum Cable, NEC Article ETPC: Electrolytic Tough Pitch Copper 725 Cable Designation AM: Amplitude Modulation ETV: Educational Television CL3R: Class 3 Circuit Riser Cable, NEC Article 725 ANSI: American National Standards Institute E/W: Equipped With Cable Designation ARPANET: Advanced Research Projects Agency EX or EXT: Extension Network CL3X: Class 3 Circuit Limited Use Cable, NEC Article 725 Cable Designation EXCH: Exchange ASCII: American Standard Code for Information f: Frequency Interchange CM: Communications Cable, NEC Article 800 Cable FAA: Federal Aeronautics Administration ASME: American Society of Mechanical Engineers Designation FCC: (1) Federal Communications Commission (2) ASP: A filled, direct burial telephone cable used in CMA: Circular Mil Area CMP: Communication Cable Plenum, NEC Article Flat Conductor Cable, NEC Article 328 Cable areas subject to rodent attack. It consists of a Designation filled cable core, corrugated aluminum shield, 800 Cable Designation FDDI: Fiber Distributed Data Interface corrugated steel tape, flooding compound and CMR: Communications Cable Riser, NEC Article polyethylene jacket. 800 Cable Designation FDM: Frequency-Division Multiplexing ASTA: United Kingdom approval agency CMX: Communications Limited Use Cable, NEC FDR: Feeder ASTM: American Society for Testing and Materials Article 800 Cable Designation FEP: Fluorinated ethylene propylene AWG: American Wire Gauge CO: Central Office FEXT: Far End Crosstalk AWM: Appliance wiring material codec: Coder decoder FI: Approval agency of Finland; Electrical Inspectorate B & S Gauge: See American Wire Gauge (AWG) COE: Central Office Equipment FIPS PUB: Federal Information Processing B or BUR: Buried COS: Cooperation for Open Systems Standard Publication AWM: Appliance wiring material COSINE: Cooperation for Open Systems FM: Frequency modulation BCF: Billion Conductor Feet Interconnection Network in Europe FOCIS: Fiber Optic Connector Intermateability BEF: Building Entrance Facility COT: Central Office Terminal CPC: Customer Premises Communication Standard BER: Bit Error Rate FOTP: Fiber Optic Test Procedure BIC: Building Industry Consultant CPE: (1) Chlorinated Polyethylene (2) Customer Premises Equipment or Customer Provided FOTS: Fiber Optics Transmission System BICSI: Building Industry Consulting Service Equipment FPL: Power Limited Fire Protective Signaling Circuit International CPU: Central Processing Unit Cable, NEC Article 760 Cable Designation BISDN: Broadband Integrated Services Digital CRT: Cathode Ray Tube FPLP: Power Limited Fire Protective Signaling Network Circuit Plenum Cable, NEC Article 760 Cable BTU: British Thermal Unit CSMA/CD: Carrier Sense Multiple Access/ Collision Detection Designation CA: Cable CSPE: Chlorosulfonated Polyethylene FPLR: Power Limited Fire Protective Signaling CATV: (1) Community Antenna Television; Cable Circuit Riser Cable, NEC Article 760 Cable CTR: Certified Test Report Access Television (2) CATV Cable, NEC Article Designation CV: Continuous vulcanization 820 Cable Designation FR-1: A flammability rating established by CATVP: CATV Plenum Cable, NEC Article 820 Cable D-A: Digital to analog conversion Underwriter's Laboratories for wires and cables Designation DAF: Dedicated Access Facility that pass a specially designed vertical flame test CATVR: CATV Riser Cable, NEC Article 820 Cable dB: Decibel freq: Frequency Designation DBS: Direct Broadcast Satellite FRICC: Federal Research Internet Coordinating CATVX: CATV Limited Use Cable, NEC Article 820 dc: Direct current Committee (now FNC) Cable Designation DCE: Data Circuit-Terminating Equipment FRPE: Flame Retardant Polyethylene CB: Citizens band DCO: Digital Central Office ft: Foot C-C: Conductor to conductor capacitance DCR: Direct Current Resistance FTP: Fire Transfer Protocol CCITT: The International Telegraph and Telephone DD: Distribution Designer or Distribution Device ga: Gauge Consultative Committee DEMARC: Demarcation point gHZ: Gigahertz CCTV: Closed-circuit television DEMKO: Approval agency of Denmark grd: Ground CDDI: Copper Distributed Data Interface DGM: Data Grade Medium GTO: Gas tube sign and oil-burner ignition cable. CDF: Central Distribution Frame DISA: Defense Information Systems Agency 5,000V-15,000V. CDO: Community Dial Office (formerly DCA) H: Designation for intensity of magnetic energy CEBEC: Belgium approval agency; Commite DISI: Directory Information Services Infrastructure hc: Handset combination (single-line telephone) Electrotechnique Belge Service de la Marque DIST: District HC: Horizontal cross-connect CEE: European standards agency; International DRT: Plastic range and dryer cord (CSA) hck: Handset combination; key (six-button Commission on Rules for the Approval of DTE: Data Terminal Equipment telephone) Electrical Equipment DVD: Digital Versatile Disc HDPE: High Density Polyethylene DW: Distribution Wire HF: High Frequency 216 Technical Information Electronics Abbreviations & Acronyms hh: Handhole MDPE: Medium Density Polyethylene PABX: Private Automatic Branch Exchange Hi-Pot: A test designed to determine the highest Meg or Mega: A numerical prefix denoting PAM: Pulse Amplitude Modulation voltage that can be applied to a conductor 1,000,000 (106) PAP: A commonly used term for air core (unfilled) without breaking through the insulation. M/G: Motor/Generator Set direct burial telephone cable with a corrugated HPD: Rubber- and asbestos-insulated heater cord. MH: Manhole aluminum shield No braid on individual conductors but with braid Mho: The unit of conductivity. The reciprocal of an PBX: Private Branch Exchange overall. Also made with neoprene insulation and ohm. PC: Personal Computer no asbestos or PVC/NBC. MHz: Megahertz PCB: Printed Circuit Board HPN: Two-conductor, neoprene-insulated heater MI: Mineral Insulated Cable, NEC Article 330 P-FEP: General Cable proprietary dielectric cord. Parallel construction. For use in damp Cable Designation material used injunction with FEP. locations. Micro: A numerical prefix denoting one-millionth PCM: Pulse Code Modulation HSJ: Same as type HS but with #18, #16 and #14 6 (10 ) PCP: A commonly used term for air core (unfilled) conductors and differing thickness of jacket. MIL STD: Military Standard direct burial cable with a corrugated copper HVAC: Heating, ventilation and air conditioning MILNET: Military Network shield Hz: Hertz MLT: Multi-Level Threshold PE: Polyethylene i: Symbol used to designate current mm: Millimeter pf: Picofarad IC: Intermediate cross-connect Modem: Modulator demodulator PFA: Polyfluoroalkoxy ICEA: Insulated Cable Engineers Association MTT: Main Telephone Terminal PIC: A general term for any type of plastic IDC: Insulation Displacement Connector MTW: Machine Tool Wire insulated telephone cable IEC: Internation Electrotechnical Commission MV: Medium Voltage Cable, NEC Article 326 Pico: A numerical prefix denoting one-millionth of -12 IEEE: Institute of Electrical and Electronics Cable Designation one-millionth (10 ) Engineers MW: Radio hookup wire with polyvinyl insulation PL: Private Lines IGS: Integrated Gas Spacer Cable, NEC Article and plain or nylon jacket or braid, or shield, PLSJ: All-rubber, parallel-jacketed, two- 325 Cable Designation 1000V conductor, light-duty cord for pendant or IMSA: International Municipal Signal Association N: Newton portable use in damp locations. 300V. in: Inch NAIC: Network Applications and Information PLT: (1) Plant (2) Same as PLSJ except thermo- IRSG: Internet Research Steering Group Center plastic insulation IRTF: Internet Research Task Force NASA: National Aeronautics and Space PLTC: Power Limited Tray Cable, NEC Article 725 IS: International Standard Administration Cable Designation ISA: Instrument Society of America NBR: Natural butadiene-acrylonitrile copolymer PM: Phase Modulation ISDN: Integrated Services Digital Network