The method that transforms analog parameters to digital parameter is called a / d . it is necessary to apply a / d in experimentation and production process 將模擬量轉(zhuǎn)換為被計(jì)算機(jī)所認(rèn)識(shí)和接收的數(shù)字量,這個(gè)過(guò)程叫做模擬/數(shù)字轉(zhuǎn)換,簡(jiǎn)稱a / d 。
Dba design can enhance the dll circuit ' s robustness and minimize the clock jitter . it also avoids the difficulty of analog parameter design and process control 采用這樣的設(shè)計(jì),增加了dll電路的穩(wěn)定性,減小了時(shí)鐘抖動(dòng),同時(shí)避免了模擬電路參數(shù)設(shè)計(jì)和工藝控制的難點(diǎn)。
Many continuously variational prameters in all kinds of acquisition systems are analog parameters . but computer only can process operation according to binary system 在各種自動(dòng)測(cè)量?采集和控制系統(tǒng)中遇到的變量,大多時(shí)間上和幅度上都是連續(xù)變化的物理量,即模擬量。
The typical design gets the technical parameters from digital filters that should be designed , and then transformed into the analog parameters of a low - pass analog filter prototype . the prototype is converted into the analog low - pass , high - pass , band - pass and the band - stop filters respectively , which are transformed into the digital ones 典型設(shè)計(jì)是先按一定規(guī)則將給出的數(shù)字濾波器的技術(shù)指標(biāo)轉(zhuǎn)換成模擬低通濾波器的技術(shù)指標(biāo),據(jù)此產(chǎn)生模擬濾波器原型,然后把模擬低通濾波器原型轉(zhuǎn)換成模擬低通、高通、帶通、帶阻濾波器,最后再把模擬濾波器轉(zhuǎn)換成數(shù)字濾波器。