Function generators have been around for a long while. Over time, these instruments have accumulated a long list of features. Starting with just a few knobs for setting the
amplitude and frequency of a sinusoidal output, function generators now provide wider frequency ranges, calibrated output levels, a variety of waveforms, modulation modes, computer interfaces, and in some cases, arbitrary functions.

函數(shù)發(fā)生器已流傳了好長(zhǎng)時(shí)間。隨著時(shí)間的流逝,這些儀器已經(jīng)累積了各種各樣不同的特征。開(kāi)始只有少量旋鈕用來(lái)設(shè)置正弦波幅值和頻率的輸出，現(xiàn)在的功能已有所增加，例如頻率范圍較寬，校準(zhǔn)輸出水平，校正產(chǎn)出水平,多種波形、調(diào)制模式,計(jì)算機(jī)接口,在某些情況下,任意函數(shù)。