1670 Chapter 48
directivity factor Q
directivity index DI
Discrete Fourier Transform DFT
discrete multitone DMT
display data channel DDC
display power management signaling DPMS
dissipation factor DF
double sideband DSB
dual expanded plastic insulated conductor DEPIC
dual in-line package DIP
dual-tone multifrequency DTMF
dynamic host configuration protocol DHCP
dynamic host control protocol DHCP
dynamic noise reduction DNR
dyne dyn
EIA microphone sensitivity rating GM
eight-to-fourteen modulation EFM
electrical metallic tubing EMT
electrical power required EPR
electrocardiograph EKG
electromagnetic compatibility ECM
electromagnetic interference EMI
electromagnetic radiation emr
electromagnetic unit EMU
electromechanical relay EMR
electromotive force emf
electron volt eV
electronic data processing EDP
Electronic Field Production EFP
Electronic Industries Alliance EIA
Electronic Industries Association (obsolete) EIA
electronic iris E.I.
electronic music distribution EMD
electronic news gathering ENG
electronic voltohmmeter EVOM
electronvolt eV
electrostatic unit ESU
Emergency Broadcast System EBS
end of life vehicle ELV
energy density level LW
energy frequency curve EFC
energy level LE
energy-time-curve ETC
Enhanced Definition Television EDTV
enhanced direct time lock DTLe
enhanced IDE EIDETable 48-9. Recommended Abbreviations
Unit or Term Symbol or
Abbreviationenvironmental protection agency EPA
equal level far end crosstalk ELFEXT
equalizer EQ
equipment distribution area EDA
equivalent acoustic distance EAD
equivalent input noise EIN
equivalent rectangular bandwidth ERB
equivalent resistance Req
equivalent series inductance ESL
equivalent series resistance ESR
error checking and correcting random-access
memoryECC RAMethylene-propylene copolymer rubber EPR
ethylene-propylene-diene monomer rubber EPDM
European Broadcasting Union EBU
expanded polyethylene-polyvinyl chloride XPE-PVC
extended data out RAM EDO RAM
extra-high voltage EHV
extremely high frequency EHF
extremely low frequency ELF
far end crosstalk FEXT
farad F
Fast Discrete Fourier Transform FDFT
Fast Fourier Transform FFT
fast link pulses FLPs
Federal Communications Commission FCC
feedback stability margin FSM
fiber data distributed interface FDDI
fiber distribution frame FDF
fiber optic connector FOC
fiber optics FO
fiber to the curb FTTC
fiber to the home FTTH
field programmable gate array FPGA
field-effect transistor FET
file transfer protocal FTP
finite difference FD
finite difference time domain FDTD
finite impulse response FIR
fire alarm and signal cable FAS
Flame retardant ethylene propylene FREP
flame retarded thermoplastic elastomer FR-TPE
flexible OLED FOLED
flexible organic light emitting diode FOLED
Fluorinated ethylene-propylene FEP
flux density BTable 48-9. Recommended Abbreviations
Unit or Term Symbol or
Abbreviation