- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
Noise that is present in a communications channel when no signals are applied. Note: The channel conditions and terminations must be stated for idle-channel noise measurements to be meaningful.
Industry:Telecommunications
Noise that manifests itself in a video picture as colored snow.
Industry:Telecommunications
Noise that satisfies one or more of the standard tests for statistical randomness. Note 1: Although it seems to lack any definite pattern, pseudorandom noise contains a sequence of pulses that repeat themselves, albeit after a long time or a long sequence of pulses. Note 2: For example, in spread-spectrum systems, modulated carrier transmissions appear as pseudorandom noise to a receiver (a) that is not locked on the transmitter frequencies or (b) that is incapable of correlating a locally generated pseudorandom code with the received signal.
Industry:Telecommunications
Non-common-carrier telecommunications services, including private line, virtual private line, and private switched network services.
Industry:Telecommunications
Nonlinear distortion characterized by the appearance, in the output of a device, of frequencies that are linear combinations of the fundamental frequencies and all harmonics present in the input signals. Note: Harmonic components themselves are not usually considered to characterize intermodulation distortion. When the harmonics are included as part of the distortion, a statement to that effect should be made.
Industry:Telecommunications
Nonmoving visual information, i.e., fixed images, such as graphs, drawings, and pictures.
Industry:Telecommunications
Nonpermanent access, by means of a switched network (e.g., the public switched telephone network,) to any network utilizing The Internet Protocol, especially The Internet. Note: Two well-known protocols for dialup access are PPP (point-to-point) and SLIP (serial line internet protocol. )
Industry:Telecommunications
Nonthermal conversion of electrical energy into light. Note 1: Electroluminescence is distinguished from incandescence, which is a thermal process. Note 2: One example of electroluminescence is the photon emission resulting from electron-hole recombination in a pn junction, as in a light-emitting diode (LED. )
Industry:Telecommunications
Note 1: Weighted noise power in dB is referred to 1. 0 picowatt. Thus, 0dBrn = -90 dBm. Use of 144-line, 144-receiver, or C-message weighting, or flat weighting, must be indicated in parentheses as required. Note 2: With C-message weighting, a one-milliwatt, 1000-Hz tone will read +90 dBrn, but the same power as white noise, randomly distributed over a 3-kHz band will read approximately +88. 5 dBrn (rounded off to +88 dBrn,) because of the frequency weighting. Note 3: With 144 weightings, a one-milliwatt, 1000-Hz white noise tone will also read +90 dBrn, but the same 3-kHz power will only read +82 dBrn, because of the different frequency weighting.
Industry:Telecommunications
