Satellite Technology Glossary

Satellite Technology Glossary

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There are 101 names in this directory beginning with the letter N.
n or N
n Nano (one-Billionth)

n-QAM
N-state Quadrature Amplitude Modulation

n.mi
Nautical mile

N/A
Not Applicable

N/I
Noise to Interference Ratio

nA
Nanoampere

NAB
National Association of Broadcasters (USA)

NACD
Network Autonomous Commanding Display

NACK
Negative Acknowledgement

NAM
National Association of Manufacturers (USA)

NAND
Type of logic circuit

NAS
National Academy of Sciences (USA)

NASA
National Aeronautics and Space Administration (USA)

NASC
National Aeronautics and Space Council (USA)

NASCOM
NASA Communications Network (USA)

NASDA
National Space Development Agency (Japan)

NAT/TFG
North Atlantic Traffic Forecasting Group

NAVSAT
Satellite Navigation Corporation Navy Satellite (US)

nb OR NB
Narrow Band

NBC
National Broadcasting Corporation (USA)

NBFM
Narrowband Frequency Modulation

NBR
No Burst Received

NBTR
Narrowband Tape Recorder

NC
Network Congestion/Concentrators

NCAP
Nonlinear Circuit Analysis Program

NCC
Network Control Center

NCM
Network Controller Module (Timeplex card)

NDB
Nondirectional Radio Beacon

NDES
Normal Digital Echo Suppressor

NDT
Nondestructive Test

NEA
Noise Equivalent Angle

NEC
Nippon Electric Company (Japan)

NESC
National Environmental Satellite Center (USA)

NESS
National Environment Satellite Service

Network Latency
Network Latency in a packet-switched network is the time it takes packets to traverse the network from source to destination.

nF OR NF
nF Nanofarad

NGO
Non-Governmental Organization

nH
Nanohenry

NHK
Nippon Hoso Kyokai (Japan Broadcasting Corporation)

Ni-Cd
Nickel Cadmium

Ni-H2
Nickel Hydrogen

NIC
Nearly Instantaneous Companding

NILS
Non-Intelsat Launch Support

NIMBUS
Meteorological Satellite (USA)

NIS
No Input Signal

NIST
National Institute of Standards and Technology (USA)

NL
New Line

NLR
Noise Loading Ratio

nm
Nanometer

NMC
National Meteorological Center (USA) (WMO)

NMCC
Network Management and Control Center

NMI
No Modular Input

NMOS
N-channel Metal Oxide Silicon

NMS
Network Management Signal

NNI
Network Node Interface

NOAA
National Oceanic and Atmospheric Administration (USA)

NOC
Network Operations Center

NOR
Not OR function

NORAD
North American Air Defense Command (USA)

NORDSAT
Broadcast television satellite system for Nordic countries (Norway)

NOS
No Output Signal

NOSFER
(New master system for the determination of reference equivalents)

Np OR NP
Np Neper

NPC
North Pacific Cable

NPN
Negative-Positive-Negative

NPNP
Negative-Positive-Negative-Positive

NPR
Noise Power Ratio

NPRC
Network Packet Recirculator/Concentrator

NPV
Net Present Value

NRDE
Non-Reference Diagnostic Equipment

NRMS
Network Reference and Monitoring Station

NRZ
Non-Return to Zero

NRZ-I
Non-Return-to-Zero-Inverted

NRZ-L
Non-Return to Zero-Low

NRZ-M
Non-Return to Zero Mark

NRZ-S
Non-Return to Zero-Space

NRZL
Non-Return to Zero Level

ns
Nanosecond (one-billionth)

NSA
National Security Agency (USA)

NSC
Network Switching Center

NSCS
Non-linear Satellite Channel Simulator

NSF
National Science Foundation (USA)

NSI
NASA Standard Initiator

NSL
Net Switching Loss

NSPC
National Sound Program Center

NSR
No Signal Received

NSSDC
National Space Science Data Center (USA)

NTC
National Television Center

NTI
Noise Transmission Impairment

NTIA
National Telecommunications and Information Administration (USA)

NTP
Network Terminating Point

NTS
Navigation Technology Satellite

NTSC
National Television System Committee

NTSC System
System of color television based on the recommendation of the NTSC using 525 lines and 60 fields with a video bandwidth of 4.2 MHz (US, Canada, Japan)

NTT
Nippon Telegraph and Telephone Public Corporation (Japan)

NTU
Network Terminating Unit

NU
Number Unobtainable

NUT
Nutation

nV
Nanovolt

NVR
Nonvolatile Residues

nW
Nanowatt