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16 result(s) found where the letter starting with "F"

Fanout
A specification of the number of TTL or HCMOS loads to which the oscillator will be subjected
 

FCC

Federal Communications Commission
 

Frequency

The rate at which a periodic phenomenon occurs over time
 

Frequency
The repetition rate of the signal output from the oscillator. It is measured in repetitions (cycles) per second or Hertz (Hz)
 

Frequency adjustment range
the range over which the oscillator's frequency may be adjusted above and below its nominal frequency. This may be achieved either by a mechanical trimmer or via a tuning voltage. Ranges are usually specified in ppm
 

Frequency ageing
This is the ability of the oscillator to maintain its design frequency over a specified time period. This is usually specified as a maximum variation of plus and minus parts per million over a specified time period or over a specified time period for a specified number of those time periods (e.g. 10 ppm/10 years or 1 ppm per year for 10 years)
 

Frequency drift

See drift and aging
 

Frequency load tolerance

A specification of the allowable change in frequency when the load impedance is changed from the minimum to the maximum specified values
 

Frequency offset
The frequency difference between the measured value and the defined value
 

Frequency shift
Change in frequency from a standard reference
 

Frequency stability
The ability of the oscillator to maintain its design frequency with changing environmental and electrical conditions. Parameters which may affect stability include temperature, time, supply voltage, load impedance, humidity, and vibration
 

Frequency stability
Statistical estimate of the frequency fluctuations of a signal over a given time interval.
Long term stability usually involves measurement averages beyond 100s.
Short term stability usually involves measurement averages from a few tenths of a second to 100s.
Generally, there is a distinction between systematic effects such as frequency drift and stochastic frequency fluctuations. Special variances have been developed for the characterization of these fluctuations. Systematic instabilities may be caused by radiation, pressure, temperature, and humidity. Random or stochastic instabilities are typically characterized in the time domain or frequency domain. They are typically dependent on the measurement system bandwidth or on the sample time or integration time
 

Frequency standard
An oscillator such as a rubidium, cesium, or hydrogen maser whose output is used as a frequency
 

Frequency voltage tolerance
A specification of the allowable change in frequency due to changes in supply voltage from the lower to the upper limit of specified supply voltage range
 

FSMS
Frequency Stability Measurement System
 

FTP
 File Transfer Protocol