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</section><p><strong>ZC1681揚(yáng)聲器功率壽命測(cè)試系統(tǒng)</strong></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse; border-spacing:0px; color:rgb(67, 67, 67); font-family:microsoft yahei,arial; font-size:12px; line-height:13.8462px; margin:0px; padding:0px; width:660px"><tbody><tr><td><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse; border-spacing:0px; margin:0px; padding:0px; width:100%"><tbody><tr><td><span style="font-size:13px">簡(jiǎn)要介紹</span></td><td rowspan="2"><p style="text-align:center"><span style="font-size:13px"> <img alt="" src="http://www.zctek.com.cn/ckfinder/userfiles/images/2015051411153125.jpg" style="height:256px; width:300px" /></span></p><p> </p></td></tr><tr><td><span style="font-size:13px">　<strong>ZC1681揚(yáng)聲器功率壽命測(cè)試系統(tǒng)</strong>是由C1681B+ZC6221噪聲發(fā)生器/濾波器組成的自動(dòng)測(cè)試系統(tǒng)，該系統(tǒng)符合B9396-1996,GB/T14475-93,GB6832-86標(biāo)準(zhǔn)（本標(biāo)準(zhǔn)參照采用IEC268-5之《聲系統(tǒng)設(shè)備第五部分：揚(yáng)聲器》）關(guān)于揚(yáng)聲器及其系統(tǒng)功率測(cè)試的要求，用以測(cè)量揚(yáng)聲器及其系統(tǒng)的zui大噪聲功率/zui大噪聲電壓、長(zhǎng)期zui大功率/長(zhǎng)期zui大電壓、短期zui大功率/短期zui大電壓。符合中華人民共和國(guó)電子行業(yè)標(biāo)準(zhǔn)關(guān)于受話機(jī)zui大噪聲功率的測(cè)試要求。符合耳機(jī)zui大噪聲功率/zui大噪聲電壓的測(cè)試要求。</span></td></tr></tbody></table></td></tr><tr><td><span style="font-size:13px">技術(shù)指標(biāo)</span></td></tr><tr><td><table align="right" border="1" cellpadding="2" cellspacing="1" style="border-collapse:collapse; border-spacing:0px; margin:0px; padding:0px; width:100%"><tbody><tr><td><span style="font-size:13px">測(cè)試信號(hào)</span></td><td><p><span style="font-size:13px">MP3信號(hào)，模擬節(jié)目，正弦波、方波，白噪聲，粉紅噪聲</span></p></td></tr><tr><td><span style="font-size:13px">zui大接入路數(shù)</span></td><td><p><span style="font-size:13px">20路獨(dú)立功率放大器，分兩組，通道1-10為一組，通道11-20為另一組，各組實(shí)驗(yàn)參數(shù)可獨(dú)立設(shè)置。</span></p></td></tr><tr><td><span style="font-size:13px">老化試驗(yàn)時(shí)間</span></td><td><p><span style="font-size:13px">0.1-999.9h，可任意設(shè)定</span></p></td></tr><tr><td><span style="font-size:13px">監(jiān)測(cè)方式</span></td><td><p><span style="font-size:13px">20路同時(shí)監(jiān)測(cè)，被測(cè)電聲器件損壞后可自動(dòng)切斷信號(hào)，停止試驗(yàn)，避免損壞功率放大器，可自動(dòng)控制試驗(yàn)通斷時(shí)間，記錄被測(cè)器件狀態(tài)</span></p></td></tr><tr><td><span style="font-size:13px">狀態(tài)判斷</span></td><td><p><span style="font-size:13px">開路、短路或阻抗過(guò)低過(guò)高</span></p></td></tr><tr><td><span style="font-size:13px">故障警告方式</span></td><td><p><span style="font-size:13px">20路LED顯示有*通道位置</span></p></td></tr><tr><td rowspan="2"><span style="font-size:13px">測(cè)試頻率范圍</span></td><td><p><span style="font-size:13px">正弦波：20Hz-20kHz，總諧波失真（THD）:≤0.5% @ 1kHz</span></p></td></tr><tr><td><p><span style="font-size:13px">方波：20Hz-20kHz</span></p></td></tr><tr><td><span style="font-size:13px">濾波器可調(diào)范圍</span></td><td><p><span style="font-size:13px">數(shù)字可調(diào)帶通濾波zui大帶寬為14Hz-22kHz,帶寬任意調(diào)節(jié)，通帶脈動(dòng)低于±1dB。<br />高、低端載頻數(shù)字顯示，誤差小于±5%。通帶外衰減為-24dB/oct。</span></p></td></tr><tr><td><span style="font-size:13px">外接信號(hào)源</span></td><td><p><span style="font-size:13px">兩路BNC輸入/輸出，可通過(guò)鍵盤選擇</span></p></td></tr><tr><td><span style="font-size:13px">輸出功率</span></td><td><p><span style="font-size:13px">每通道zui大輸出功率15W，zui大總輸出功率：≥300W</span></p></td></tr><tr><td><span style="font-size:13px">負(fù)載阻抗</span></td><td><p><span style="font-size:13px">4-100Ω可調(diào)</span></p></td></tr><tr><td rowspan="2"><span style="font-size:13px">zui大測(cè)試數(shù)量</span></td><td><p><span style="font-size:13px">30Ω 阻抗：100只　　　16Ω 阻抗：80只</span></p></td></tr><tr><td><p><span style="font-size:13px">4Ω 阻抗：20只　　　5Ω 阻抗：40只</span></p></td></tr><tr><td><span style="font-size:13px">電壓調(diào)節(jié)范圍</span></td><td><p><span style="font-size:13px">0.01-12V（調(diào)節(jié)精度為0.01V）</span></p></td></tr><tr><td><span style="font-size:13px">zui大測(cè)試電流</span></td><td><p><span style="font-size:13px">≤1.5A</span></p></td></tr><tr><td><span style="font-size:13px">自定斷續(xù)測(cè)試</span></td><td><p><span style="font-size:13px">當(dāng)發(fā)生斷線的情況時(shí)，儀器會(huì)立即顯示該路受測(cè)喇叭之中斷線的時(shí)間，并同時(shí)停止該路之動(dòng)作。其余尚未有斷線之路則繼續(xù)測(cè)試，直到有斷線發(fā)生，或當(dāng)所使用的全部通道喇叭都斷線時(shí)，即使未達(dá)總測(cè)試時(shí)間，儀器也會(huì)自動(dòng)停止運(yùn)作，并會(huì)有閃爍的提示告知測(cè)試者</span></p></td></tr><tr><td><span style="font-size:13px">信號(hào)輸出控制</span></td><td><p><span style="font-size:13px">連續(xù)輸出或間歇輸出</span></p></td></tr><tr><td><span style="font-size:13px">儀器接口</span></td><td><p><span style="font-size:13px">RS232可與電腦連接可把測(cè)試結(jié)果儲(chǔ)存在電腦里隨時(shí)調(diào)用</span></p></td></tr></tbody></table></td></tr></tbody></table></div> <div id="quimsyk" class="tagContent" id="tagContent1" 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