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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="nrjd3qs" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304281938291016/8047698.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ynurtv3" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>江蘇RETS-100L相位差測量儀服務(wù)保障,相位差測量儀</p><p><span>***更新：</span>2020-11-13 05:07:10</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="vewdk3i" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州千宇光學(xué)科技有限公司</a></p><p><span>聯(lián)系人：</span>密先生</p><p><span>郵箱: </span>cimi@oec-tech.com</p><p><span>電話: </span>18662198664</p><p><span>傳真: </span>0512_69388290</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0512-69388290</p><p><span>地址: </span>蘇州工業(yè)園區(qū)東旺路8號7B-302室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ynk33g8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="oxub2he" class="box"><p><p style="text-indent:25px">在離中心頻率一定合理距離的偏移頻率處，邊帶功率滾降到1/fm，fm是該頻率偏離中心頻率的差值。相位噪聲通常定義為在某一給定偏移頻率處的dBc/Hz值，其中，dBc是以dB為單位的該頻率處功率與總功率的比值。一個振蕩器在某一偏移頻率處的相位噪聲定義為在該頻率處1Hz帶寬內(nèi)的信號功率與信號的總功率比值。相位差兩個頻率相同的交流電相位的差叫做相位差，或者叫做相差。這兩個頻率相同的交流電，可以是兩個交流電流，可以是兩個交流電壓，可以是兩個交流電動勢，也可以是這三種量中的任何兩個。例如研究加在電路上的交流電壓和通過這個電路的交流電流的相位差。如果電路是純電阻，那么交流電壓和交流電流的相位差等于零。也就是說交流電壓等于零的時候，交流電流也等于零，交流電壓變到比較大值的時候，交流電流也變到比較大值。這種情況叫做同相位，或者叫做同相。如果電路含有電感和電容，交流電壓和交流電流的相位差一般是不等于零的，也就是說一般是不同相的，江蘇RETS-100L相位差測量儀服務(wù)保障，或者電壓超前于電流，江蘇RETS-100L相位差測量儀服務(wù)保障，或者電流超前于電壓。相位測量當(dāng)今，相位的測量需求日益增長。高精度測距大多采用的是激光相位式測距，江蘇RETS-100L相位差測量儀服務(wù)保障。相位式測距是通過測量連續(xù)的幅度調(diào)制信號在待測距離上往返傳播所產(chǎn)生的相位延遲。精心打造的每一-臺設(shè)備出貨前都會用**計量標(biāo)準(zhǔn)片進(jìn)行校驗。江蘇RETS-100L相位差測量儀服務(wù)保障</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇RETS-100L相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304281938291016/8047698.png"></div><p style="text-indent:25px">相位差測試儀是工業(yè)領(lǐng)域中是經(jīng)常用到的一般測量工具，比如在電力系統(tǒng)中電網(wǎng)并網(wǎng)合閘時，需要兩電網(wǎng)的電信號相同，這就需要精確的測量兩工頻信號之間的相位差。更有測量兩列同頻信號的相位差在研究網(wǎng)絡(luò)、系統(tǒng)的頻率特性中具備重要意義。相位測量的方法很多，典型的傳統(tǒng)方法是通過顯示器觀測，這種方法誤差較大，讀數(shù)不方便。相位差測試儀應(yīng)用于電力線路、變電所的相位校驗和相序校驗，具有核相、測相序、驗電等功能。具備很強的抗干擾性，適應(yīng)各種電磁場干擾場合。被測高電壓相位信號由采集器取出，經(jīng)過處理后直接發(fā)射出去。接收并進(jìn)行相位比較，對核相后的結(jié)果定性。因本產(chǎn)品是無線傳輸，真正達(dá)到安全可靠、快速準(zhǔn)確，適應(yīng)各種核相場合。江蘇相位差測量儀代理商型號PLM-100 技術(shù)參數(shù)：主要測試項目：偏光片吸收軸角度、偏振片偏振方向、波片快軸方向。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇RETS-100L相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304283297490234/9619687.png"></div><p style="text-indent:25px">相位介紹相位是與電路結(jié)構(gòu)有關(guān)的參數(shù)。相位是反映交流電任何時刻的狀態(tài)的物理量。交流電的大小和方向是隨時間變化的。比如正弦交流電流，它的公式是i=Isin2πft。i是交流電流的瞬時值，I是交流電流的比較大值，f是交流電的頻率，t是時間。隨著時間的推移，交流電流可以從零變到比較大值，從比較大值變到零，又從零變到負(fù)的比較大值，從負(fù)的比較大值變到零。相位(phase)是對于一個波，特定的時刻在它循環(huán)中的位置：一種它是否在波峰、波谷或它們之間的某點的標(biāo)度。是描述訊號波形變化的度量，通常以度（角度）作為單位，也稱作相角。當(dāng)訊號波形以周期的方式變化，波形循環(huán)一周即為360°。常應(yīng)用在科學(xué)領(lǐng)域，如數(shù)學(xué)、物理學(xué)等相位調(diào)整相位調(diào)整是指在有些**音音箱上加裝的一個控制機構(gòu)。用于對**音音箱所重放出的聲音稍許加以延遲，從而讓**音音箱的輸出能夠和前置主音箱同相位，即具有相同的時間關(guān)系。相位噪聲相位噪聲是頻率域的概念，是對信號時序變化的另一種測量方式，其結(jié)果在頻率域內(nèi)顯示。如果沒有相位噪聲，那么振蕩器的整個功率都應(yīng)集中在頻率f=fo處。但相位噪聲的出現(xiàn)將振蕩器的一部分功率擴展到相鄰的頻率中去，產(chǎn)生了邊帶(sideband)。</p><p style="text-indent:25px">相位差測試儀應(yīng)用于電力線路、變電所的相位校驗和相序校驗，具有核相、測相序、驗電等功能。具備很強的抗干擾性,適應(yīng)各種電磁場干擾場合。被測高電壓相位信號由采集器取出，經(jīng)過處理后直接發(fā)射出去。由接收器接收并進(jìn)行相位比較,對核相后的結(jié)果定性。因本產(chǎn)品是無線傳輸，真正達(dá)到安全可靠、快速準(zhǔn)確，適應(yīng)各種核相場合。兩個頻率相同的交流電相位的差叫做相位差，或者叫做相差。這兩個頻率相同的交流電，可以是兩個交流電流，可以是兩個交流電壓,可以是兩個交流電動勢，也可以是這三種量中的任何兩個。兩個同頻率正弦量的相位差就等于初相之差。是一一個不隨時間變化的常數(shù)。也可以是一個元件.上的電流與電壓的相位變化。偏光片吸收軸角度、偏振片偏振方向、波片快軸方向。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇RETS-100L相位差測量儀服務(wù)保障,相位差測量儀" src="https://tyunfile.71360.com/UploadFile/SZqianyuguangxue/637304282372529297/3872049.png"></div><p style="text-indent:25px">間接法通常采用三電壓表法。一般要求兩電壓信號有一公共點（設(shè)為a點），當(dāng)分別測出兩信號電壓Uab、Uca，以及兩電壓的差值Ubc后，可畫出電壓三角形。按余弦定理，兩信號電壓間的相位差當(dāng)∮很小時，可將Uab或Uca中較大的一個信號電壓分壓，使分壓后兩信號的數(shù)值相等。間接法通常采用三電壓表法。一般要求兩電壓信號有一公共點（設(shè)為a點），當(dāng)分別測出兩信號電壓Uab、Uca，以及兩電壓的差值Ubc后，可畫出電壓三角形。按余弦定理，兩信號電壓間的相位差當(dāng)∮很小時，可將Uab或Uca中較大的一個信號電壓分壓，使分壓后兩信號的數(shù)值相等。偏光片吸收軸角度、偏振片偏振方向。江蘇相位差測量儀代理商</p><p style="text-indent:25px">PLM-100根據(jù)客戶樣品尺寸定制。江蘇RETS-100L相位差測量儀服務(wù)保障</p><p style="text-indent:25px">專業(yè)性：光學(xué)博士團隊合力研發(fā)，追求國產(chǎn)替代。精心打造的每一臺設(shè)備出貨前都會用國家i級計量標(biāo)準(zhǔn)片進(jìn)行校驗打破國外壟斷主要精度數(shù)據(jù)：整機尺寸：根據(jù)客戶樣品尺寸定制；對應(yīng)樣品尺寸：可定；制軸角度測量范圍：0°~180°；數(shù)據(jù)輸出：電腦連接；軸角度精度：±0.05°（精度業(yè)內(nèi)zui高）；測量重復(fù)性：0.02° （精度業(yè)內(nèi)zui高）；相位差重復(fù)性精度：３σ≦０．１nm；測量波段：550nm單波段（可根據(jù)客戶要求定制波段）可升級為380nm~780nm。江蘇RETS-100L相位差測量儀服務(wù)保障</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1968741.html</p></div></div></div></div></div><div id="uo72ik9" class="page-right twoColRt"><div id="t88nm2x" class="box01 margin10 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