reference frequency

reference frequency

[′ref·rəns ‚frē·kwən·sē]
(communications)
Frequency having a fixed and specified position with respect to the assigned frequency.
References in periodicals archive ?
control group (N=30) and also with the reference frequency distribution of blood group among the general population by Chi-square test [12] and a P value of 0.
The key laser parameters are thus: sub-ps optical synchronizovatelnost against external oscillator reference frequency, the so-called "carrier's envelope phase (CEP)" optical stabilization phase pulses 20 fs at an energy of at least 4 mJ and a repetition rate of 1 kHz.
1] is the instantaneous stiffness at a reference frequency and s is the stiffness sensitivity to frequency.
When using it, the designer inputs the required output frequency range, step size, PFD frequency and reference frequency constraints, and loop filter parameters, and then selects the available clock generator output dividers and PLL reference input dividers.
Separate samples from the reference frequency distribution were taken for a radiation-exposed group and a control group with DOR and DRR calculated for each set of values and BAF evaluated as BAF=DOR/DRR.
First, it is used to synthesize a large range of unique frequencies from the MEMS reference frequency.
The simulation results were carried out by using FRef = 40MHz as reference frequency.
It adjusts the switching frequency of the converter to track the reference frequency, which is represented by [F.
In searching for the optimal reference frequency, normally a frequency range is pre-selected, for example, 50 kHz - 1050 kHz.
CEO] to a 20 MHz reference frequency that is derived from the GPS signal.
The PFD output signal is a function of the difference between the phases and frequency of reference frequency and FD frequency (Jack Smith, 2003).

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