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frequency accuracy

См. также в других словарях:

  • Frequency response — is the measure of any system s spectrum response at the output to a signal of varying frequency (but constant amplitude) at its input. In the audible range it is usually referred to in connection with electronic amplifiers, microphones and… …   Wikipedia

  • Frequency counter — A frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Since frequency is defined as the number of events of a particular sort occurring in a set period of time, measuring it is usually… …   Wikipedia

  • Frequency comb — A frequency comb is the graphic representation of the spectrum of a mode locked laser. An octave spanning comb can be used for mapping radio frequencies into the optical frequency range or it can be used to steer a piezoelectric mirror within a… …   Wikipedia

  • Frequency changer — A frequency changer or frequency converter is an electronic device that converts alternating current (AC) of one frequency to alternating current of another frequency. The device may also change the voltage, but if it does, that is incidental to… …   Wikipedia

  • Frequency standard — A frequency standard is a stable oscillator used for frequency calibration or reference. A frequency standard generates a fundamental frequency with a high degree of accuracy and precision. Harmonics of this fundamental frequency are used to… …   Wikipedia

  • Master frequency generator — A master frequency generator or master electronic oscillator, in frequency division multiplexing (FDM), is a piece of equipment used to provide system end to end carrier frequency synchronization and frequency accuracy of tones. The following… …   Wikipedia

  • Standard time and frequency signal service — The Standard Time and Frequency Signal (STFS) is a service available in the United States (centered at 10.000MHz? .jg) which provides standard time and frequency signals, broadcast on very precise carrier frequencies by the U.S. Naval Observatory …   Wikipedia

  • Utility frequency — The waveform of 230 volt, 50 Hz compared with 110 V, 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (ac, also AC) is transmitted from a… …   Wikipedia

  • Single-frequency network — For other uses, see SFN (disambiguation). A single frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel. Contents 1 Overview 2 OFDM and COFDM 3 DVB T SFN …   Wikipedia

  • Low-frequency radar — is the use of radars which use frequencies lower than 1 GHz, as opposed to the usual Radar bands which can range from the X band at 8 12 GHz to the Ka band which tops out at 40 GHz.The radar cross section of any target depends on the radar… …   Wikipedia

  • Time-frequency analysis — is a body of techniques for characterizing and manipulating signals whose component frequencies vary in time, such as transient signals.Whereas the technique of the Fourier transform can be used to obtain the frequency spectrum of a signal whose… …   Wikipedia

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