Master frequency generator
Encyclopedia
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 types of oscillators are used in the Defense Communications System FDM systems:
Frequency
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency.The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency...
generator or master electronic oscillator, in frequency-division multiplexing
Frequency-division multiplexing
Frequency-division multiplexing is a form of signal multiplexing which involves assigning non-overlapping frequency ranges to different signals or to each "user" of a medium.- Telephone :...
(FDM), is a piece of equipment used to provide system
System
System is a set of interacting or interdependent components forming an integrated whole....
end-to-end carrier frequency
Carrier wave
In telecommunications, a carrier wave or carrier is a waveform that is modulated with an input signal for the purpose of conveying information. This carrier wave is usually a much higher frequency than the input signal...
synchronization
Synchronization
Synchronization is timekeeping which requires the coordination of events to operate a system in unison. The familiar conductor of an orchestra serves to keep the orchestra in time....
and frequency accuracy of tones.
The following types of oscillators are used in the Defense Communications System FDM systems:
- Type 1 - A master carrierCarrier waveIn telecommunications, a carrier wave or carrier is a waveform that is modulated with an input signal for the purpose of conveying information. This carrier wave is usually a much higher frequency than the input signal...
oscillator as an integral part of the multiplexerMultiplexerIn electronics, a multiplexer is a device that selects one of several analog or digital input signals and forwards the selected input into a single line. A multiplexer of 2n inputs has n select lines, which are used to select which input line to send to the output...
set. - Type 2 - A submaster oscillator equipment or slave oscillator equipment as an integral part of the multiplexer set.
- Type 3 - An external master oscillator equipment that has extremely accurate and stable characteristics.