crest factor


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crest factor

[′krest ‚fak·tər]
(physics)
The ratio of the peak value to the effective value of any periodic quantity such as a sinusoidal alternating current. Also known as amplitude factor; peak factor.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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His topics include linear systems and identification, modeling power amplified nonlinearities, memory effects, reducing the crest factor of digital communication signals, and frequency domain models.
The 61800 series is also able to provide precision measurements such as RMS voltage, RMS current, true power, power factor, current crest factor and many others.
The first is based on scalar measurements such as root mean square (RMS), crest factor and the kurtosis [5] which gives a reasonably global defect indication without the possibility of its location in the bearing.
(ii) Crest Factor (C) or Peak-to-Average Ratio (PAR), that is, the peak amplitude of the waveform divided by the rms value of the waveform s(t):
Unlimited crest factor and 100% load step capability
"Customers are able to rapidly evaluate Xilinx's crest factor reduction (CFR) and DPD algorithms in conjunction with ADI's high-performance transmitter solutions, saving considerable engineering time.
Customers can further speed time-to-market with a complete signal chain for software defined radio and test equipment: dual, 16-bit, 1-GSPS digital-to-analog converter (DAC) (DAC5682Z); wideband, fully differential amplifier (THS4509); programmable digital up and down converter (GC5016); digital pre-distortion solution with crest factor reduction (GC5325); direct quadrature modulator (TRF3703); frequency synthesizer (TRF3761); low-jitter clock generator and synchronizer (CDCE62005, CDCE72010); and high-performance digital signal processors (DSP) (TMS320C6472).
A factor, sometimes called crest factor, is multiplied by the background noise voltage to determine the threshold.
In addition to the versatile DAC5687, TI also offers additional low power analog parts and high performance DSPs, including the new GC1115 wideband crest factor reduction processor and TMS320TCI6482 DSP.
They have focused on the voltage drift caused by temperature changes or the voltage variation according to the crest factor in a modulated system.
A filter/vibrometer option is designed to turn the unit into a hand-held digital vibration meter that can measure acceleration (rms, peak, and crest factor), filtered rms velocity and filtered peak to peak displacement allowing measurements when collecting spc data on a predictive maintenance route.