Fundamentals and Units of Measurement 1671foot ft/ [']
foot per minute ft/min
foot per second ft/s
foot per second squared ft/s^2
foot pound-force ft·lbf
foot poundal ft·dl
footcandle fc
footlambert fL
forward error correction FEC
four-pole, double-throw 4PDT
four-pole, single-throw 4PST
fractional part of FRC
frame check sequence FCS
frequency modulation FM
frequency time curve FTC
frequency-shift keying FSK
frequency; force f
frequently asked question FAQ
full scale FS
function indicator panel FIP
gallon gal
gallon per minute gal/min
gauss G
General Services Administration GSA
gigacycle per second GHz
gigaelectronvolt GeV
gigahertz GHz
gilbert Gb
gram g
Greenwich Mean Time GMT
ground GND
gypsum wallboard GWB
head related transfer function HRTF
Hearing Loss Association of America HLAA
heating, ventilating, and air conditioning HVAC
henry H
hertz Hz
high bit-rate digital subscriber line HDSL
high definition - serial digital interface HD-SDI
high definition multimedia interface HDMI
high frequency HF
high voltage HV
high-bandwidth digital content protection HDCP
high-definition multimedia interface HDMI
high-definition television HDTV
high-density linear converter system HDLCSTable 48-9. Recommended Abbreviations
Unit or Term Symbol or
Abbreviationhigh-pass filter HPF
high-speed cable data service HSCDS
high-speed parallel network technology HIPPI
Home Automation and Networking Association HANA
horizontal connection point HCP
horizontal distribution areas HDAs
horsepower hp
hour h
hybrid fiber/coaxial HFC
hypertext markup language HTML
hypertext transfer protocol HTTP
ignition radiation suppression IRS
impedance (magnitude) Z
impulse response IR
in the ear ITE
inch in, ["]
inch per second in/s
independent consultants in audiovisual technology ICAT
independent sideband ISB
index matching gel IMG
index of refraction IOR
inductance L
inductance-capacitance LC
inductive reactance XL
inductor L
infinite impulse response IIR
infrared IR
initial signal delay ISD
initial time delay gap ITDG
inner hair cells IHC
input-output I/O
inside diameter ID
Institute of Electrical and Electronic Engineers IEEE
Institute of Radio Engineers IRE
instructional television fixed service ITFS
Insulated Cable Engineers Association ICEA
insulated gate field effect transistor IGFET
insulated gate transistor IGT
insulation displacement connector IDC
insulation resistance IR
integrated circuit IC
integrated detectors/preamplifiers IDP
integrated device electronics IDE
integrated electronic component IEC
integrated network management system INMS
Integrated Services Digital Network ISDNTable 48-9. Recommended Abbreviations
Unit or Term Symbol or
Abbreviation