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2021-09-25
色(se)(se)差計又名色(se)(se)輝計、比(bi)較(jiao)測(ce)色(se)(se)儀(yi)、油(you)脂測(ce)色(se)(se)儀(yi)，可以測(ce)量各種液體(ti)、膠(jiao)體(ti)、固體(ti)和(he)粉(fen)末樣品的色(se)(se)度。色(se)(se)差計儀(yi)器結(jie)構簡單，使(shi)用方便，測(ce)量結(jie)果(guo)*符合的羅(luo)維朋色(se)(se)標(biao)(biao)度。使(shi)用色(se)(se)差計要(yao)注意的事(shi)項有哪些？1.光源(yuan)的預熱目前的色(se)(se)差計大部分是用鹵鎢燈(deng)連(lian)續方式照明。每次(ci)開機(ji)后(hou)(hou)，儀(yi)器都要(yao)經一段(duan)時間的預熱（5~15min不等），這是穩定光源(yuan)的必須過程。只有經過充(chong)分的預熱，光源(yuan)的色(se)(se)溫才能穩定，切不可人為(wei)的縮短預熱時問（如開機(ji)一段(duan)時間后(hou)(hou)才接通光源(yuan)）。2.調(diao)標(biao)(biao)準色(se)(se)差計的測(ce)量方法是比(bi)較(jiao)測(ce)量法。每次(ci)開機(ji)后(hou)(hou)調(diao)標(biao)(biao)準是至關重要(yao)...2021-06-24
在(zai)數(shu)(shu)字(zi)電(dian)(dian)(dian)路(lu)實(shi)驗(yan)中(zhong)，需要使用(yong)(yong)(yong)(yong)若(ruo)干儀(yi)器(qi)、儀(yi)表觀察實(shi)驗(yan)現(xian)象和結果。常(chang)用(yong)(yong)(yong)(yong)的(de)(de)電(dian)(dian)(dian)子測量儀(yi)器(qi)有萬(wan)用(yong)(yong)(yong)(yong)表、邏輯筆、普通示波(bo)器(qi)、存(cun)儲示波(bo)器(qi)、邏輯分(fen)析儀(yi)等。萬(wan)用(yong)(yong)(yong)(yong)表和邏輯筆使用(yong)(yong)(yong)(yong)方(fang)法比較簡單，而邏輯分(fen)析儀(yi)和存(cun)儲示波(bo)器(qi)目前在(zai)數(shu)(shu)字(zi)電(dian)(dian)(dian)路(lu)教學實(shi)驗(yan)中(zhong)應用(yong)(yong)(yong)(yong)還不十分(fen)普遍。示波(bo)器(qi)是(shi)(shi)一種使用(yong)(yong)(yong)(yong)非常(chang)廣泛(fan)，且使用(yong)(yong)(yong)(yong)相對復雜(za)的(de)(de)儀(yi)器(qi)。介紹一下數(shu)(shu)字(zi)示波(bo)器(qi)的(de)(de)原理和使用(yong)(yong)(yong)(yong)方(fang)法。1、數(shu)(shu)字(zi)示波(bo)器(qi)工作原理示波(bo)器(qi)是(shi)(shi)利用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)子示波(bo)管的(de)(de)特(te)性(xing)，將(jiang)人眼無法直(zhi)接觀測的(de)(de)交(jiao)變電(dian)(dian)(dian)信號轉換成圖像，顯(xian)示在(zai)熒光屏上以便測量的(de)(de)電(dian)(dian)(dian)子測量儀(yi)器(qi)。它是(shi)(shi)觀察數(shu)(shu)字(zi)電(dian)(dian)(dian)路(lu)實(shi)驗(yan)現(xian)象、分(fen)析實(shi)...2021-04-28
尊敬的(de)(de)客戶：根據《國務院辦公廳關于(yu)2021年部分節(jie)假日(ri)安(an)排(pai)的(de)(de)通(tong)知(zhi)》決定精神，現將(jiang)本(ben)站(zhan)“五(wu)一”勞(lao)動節(jie)放(fang)假的(de)(de)有(you)(you)關事宜通(tong)知(zhi)如下：2021年“五(wu)一”放(fang)假時間為(wei)：2021年5月1日(ri)-5月5日(ri)，共5天。5月6日(ri)（星期(qi)四）上班！節(jie)日(ri)期(qi)間，本(ben)站(zhan)將(jiang)暫停(ting)人工回復，請先留言或郵件給我們，節(jie)后統一安(an)排(pai)處理！如遇(yu)緊急情(qing)況，請打客服電(dian)話(hua)！感謝(xie)您對(dui)我司的(de)(de)支(zhi)持(chi)和關注！深圳市君(jun)輝電(dian)子有(you)(you)限公司2021.4.282021-03-20
數(shu)(shu)(shu)(shu)(shu)字示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器因具有波(bo)(bo)(bo)(bo)(bo)形觸(chu)發(fa)、存儲、顯示(shi)(shi)、測量(liang)、波(bo)(bo)(bo)(bo)(bo)形數(shu)(shu)(shu)(shu)(shu)據(ju)分析處理等*優點，其使(shi)用日(ri)益普及。由于數(shu)(shu)(shu)(shu)(shu)字示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器與模擬(ni)(ni)示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器之(zhi)間存在較大(da)的(de)(de)性能差異，如果使(shi)用不當，會產生較大(da)的(de)(de)測量(liang)誤差，從而影響測試任(ren)務。帶(dai)寬是(shi)示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器重(zhong)要的(de)(de)指標之(zhi)一。模擬(ni)(ni)示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器的(de)(de)帶(dai)寬是(shi)一個固定的(de)(de)值，而數(shu)(shu)(shu)(shu)(shu)字示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器的(de)(de)帶(dai)寬有模擬(ni)(ni)帶(dai)寬和數(shu)(shu)(shu)(shu)(shu)字實(shi)(shi)時(shi)(shi)帶(dai)寬兩種。數(shu)(shu)(shu)(shu)(shu)字示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器對(dui)重(zhong)復(fu)信號(hao)采(cai)用順序(xu)采(cai)樣或隨機(ji)采(cai)樣技術(shu)所能達到的(de)(de)高(gao)(gao)帶(dai)寬為示(shi)(shi)波(bo)(bo)(bo)(bo)(bo)器的(de)(de)數(shu)(shu)(shu)(shu)(shu)字實(shi)(shi)時(shi)(shi)帶(dai)寬，數(shu)(shu)(shu)(shu)(shu)字實(shi)(shi)時(shi)(shi)帶(dai)寬與高(gao)(gao)數(shu)(shu)(shu)(shu)(shu)字化頻率(lv)和波(bo)(bo)(bo)(bo)(bo)形重(zhong)建技術(shu)因子K相關(guan)（數(shu)(shu)(shu)(shu)(shu)字實(shi)(shi)時(shi)(shi)帶(dai)寬=高(gao)(gao)數(shu)(shu)(shu)(shu)(shu)字化速(su)率(lv)/K），一般(ban)并不作...2021-01-18
信(xin)號(hao)發(fa)生(sheng)器(qi)，又稱(cheng)信(xin)號(hao)源或(huo)振蕩(dang)器(qi)，是(shi)一種能提(ti)(ti)供(gong)各種頻(pin)率、波(bo)形(xing)和輸出電(dian)(dian)(dian)(dian)(dian)平電(dian)(dian)(dian)(dian)(dian)信(xin)號(hao)的(de)(de)(de)設備。它在(zai)生(sheng)產實踐和科技領域中(zhong)有著廣泛的(de)(de)(de)應用(yong)，常用(yong)作(zuo)測(ce)試的(de)(de)(de)信(xin)號(hao)源或(huo)激勵(li)源，能夠產生(sheng)多種波(bo)形(xing)，各種波(bo)形(xing)曲線以(yi)三(san)角函數方程式(shi)來表示。在(zai)測(ce)試、研究或(huo)調整電(dian)(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)(dian)路及設備時，為測(ce)定電(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)一些電(dian)(dian)(dian)(dian)(dian)參量，如測(ce)量頻(pin)率響(xiang)應、噪聲系數，為電(dian)(dian)(dian)(dian)(dian)壓表定度等，都要(yao)(yao)求(qiu)提(ti)(ti)供(gong)符(fu)合所定技術條件(jian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)信(xin)號(hao)，以(yi)模擬在(zai)實際工(gong)作(zuo)中(zhong)使(shi)用(yong)的(de)(de)(de)待(dai)測(ce)設備的(de)(de)(de)激勵(li)信(xin)號(hao)。當要(yao)(yao)求(qiu)進行系統的(de)(de)(de)穩態特性測(ce)量時，需(xu)使(shi)用(yong)振幅、頻(pin)率已知的(de)(de)(de)正(zheng)弦(xian)信(xin)號(hao)源。當測(ce)試系統的(de)(de)(de)瞬態特性時，又需(xu)...2020-12-21
頻譜(pu)分(fen)(fen)(fen)析儀(yi)是研究(jiu)電(dian)信號(hao)頻譜(pu)結構(gou)的(de)(de)(de)儀(yi)器(qi)(qi)，用(yong)于信號(hao)失(shi)真(zhen)(zhen)度(du)、調制度(du)、譜(pu)純度(du)、頻率(lv)穩定度(du)和(he)交調失(shi)真(zhen)(zhen)等信號(hao)參數(shu)(shu)的(de)(de)(de)測量(liang)，可用(yong)以(yi)測量(liang)放大(da)器(qi)(qi)和(he)濾波器(qi)(qi)等電(dian)路系(xi)統的(de)(de)(de)某些(xie)參數(shu)(shu)，是一種多用(yong)途(tu)的(de)(de)(de)電(dian)子測量(liang)儀(yi)器(qi)(qi)。它又可稱為頻域示(shi)波器(qi)(qi)、跟(gen)蹤示(shi)波器(qi)(qi)、分(fen)(fen)(fen)析示(shi)波器(qi)(qi)、諧波分(fen)(fen)(fen)析器(qi)(qi)、頻率(lv)特性(xing)分(fen)(fen)(fen)析儀(yi)或傅(fu)里葉分(fen)(fen)(fen)析儀(yi)等。現代(dai)頻譜(pu)分(fen)(fen)(fen)析儀(yi)能(neng)(neng)以(yi)模擬方式或數(shu)(shu)字(zi)方式顯示(shi)分(fen)(fen)(fen)析結果，能(neng)(neng)分(fen)(fen)(fen)析1赫以(yi)下的(de)(de)(de)甚(shen)低頻到亞毫米(mi)波段的(de)(de)(de)全部(bu)無線電(dian)頻段的(de)(de)(de)電(dian)信號(hao)。儀(yi)器(qi)(qi)內部(bu)若采用(yong)數(shu)(shu)字(zi)電(dian)路和(he)微(wei)處理器(qi)(qi)，具有存儲和(he)運算功(gong)能(neng)(neng)；配(pei)置(zhi)標準接口，就容易構(gou)成自動測試系(xi)統。頻譜(pu)分(fen)(fen)(fen)...2020-11-16
數(shu)(shu)字萬用(yong)(yong)表(biao)(biao)，一種(zhong)多(duo)(duo)(duo)(duo)用(yong)(yong)途電(dian)(dian)子測(ce)(ce)量(liang)(liang)儀(yi)器(qi)，一般(ban)包含安培計、電(dian)(dian)壓表(biao)(biao)、歐(ou)姆(mu)計等(deng)功(gong)能(neng)，有時也(ye)稱為萬用(yong)(yong)計、多(duo)(duo)(duo)(duo)用(yong)(yong)計、多(duo)(duo)(duo)(duo)用(yong)(yong)電(dian)(dian)表(biao)(biao)，或三(san)用(yong)(yong)電(dian)(dian)表(biao)(biao)。數(shu)(shu)字萬用(yong)(yong)表(biao)(biao)適用(yong)(yong)于(yu)基本(ben)故(gu)障診斷的便攜式裝置(zhi)，也(ye)有放置(zhi)在(zai)(zai)工作臺的裝置(zhi)，有的分辨率可(ke)以達到七、八(ba)位。數(shu)(shu)字多(duo)(duo)(duo)(duo)用(yong)(yong)表(biao)(biao)（DMM）是在(zai)(zai)電(dian)(dian)氣測(ce)(ce)量(liang)(liang)中要(yao)用(yong)(yong)到的電(dian)(dian)子儀(yi)器(qi)。它可(ke)以有很多(duo)(duo)(duo)(duo)特殊(shu)功(gong)能(neng)，但主(zhu)要(yao)功(gong)能(neng)就是對電(dian)(dian)壓、電(dian)(dian)阻和電(dian)(dian)流進行測(ce)(ce)量(liang)(liang)，數(shu)(shu)字多(duo)(duo)(duo)(duo)用(yong)(yong)表(biao)(biao)，作為現代化的多(duo)(duo)(duo)(duo)用(yong)(yong)途電(dian)(dian)子測(ce)(ce)量(liang)(liang)儀(yi)器(qi)，主(zhu)要(yao)用(yong)(yong)于(yu)物理、電(dian)(dian)氣、電(dian)(dian)子等(deng)測(ce)(ce)量(liang)(liang)領域。數(shu)(shu)字萬用(yong)(yong)表(biao)(biao)相(xiang)對來說，屬于(yu)比(bi)較簡(jian)單的測(ce)(ce)量(liang)(liang)儀(yi)器(qi)。從數(shu)(shu)字萬用(yong)(yong)表(biao)(biao)的電(dian)(dian)壓、電(dian)(dian)阻...