N-Connector

A low-loss coaxial cable connector used at the elevated C-band microwave frequencies.

Nano

A numerical prefix denoting one-billionth (10⁶ ).

NASA

National Aeronautics Space Administration. U.S. agency which administer the Ameriican space program, including the deployment of military satellites via its fleet of space transportaion system (STS) space shuttles.

National Electrical Code

A consensus standard published by the National Fire Protection Association (NFPA) and incorporated in OSHA regulations.

Negative Picture Transmission

Transmission system used in North America and other countries in which a decrease in illumination of the original scene causes an increase in percentage of modulation of the picture carrier. When demodulated, signals with a higher modulation percentage have more positive voitages.

Negative Picture Phase

Positioning the composite video signal so that the maximum level of the sync pulses is at 100% amplitude. The brightest picture singals are in the opposite negative direction.

Noise Figure

Measurement of noise contribution of an amplifier relative to a noise-free amplifier at a reference temperature. Usually expressed in dB for Ku-band amplifiers.

Noise Temperature

A measure of the amount of thermal noise present in a system or device. The lower the noise ternperature,the better the performance.

Noise Measure (of an amplifier)

The Noise figure of a theoretical infinite chain of identical amplifiers.

Noise

An unwanted signal which interferes with reception of the desired information. Noise is often expressed in degrees Kelvin or in decibels.

NTSC Color Bar Pattern

The standard test pattern of six adjacent color bars including the three primary colors pulse their three complementary shades.

NTSC

The National Television Standards Committee which created standard for North american TV Braodcasts

Nutation

The imbalance associated with a spinning object.