有的(de)(de)(de)用戶(hu)(hu)反映它(ta)們(men)按(an)紅(hong)(hong)外(wai)(wai)燈要(yao)求的(de)(de)(de)照(zhao)(zhao)度(du)(du)選配了攝(she)像(xiang)(xiang)機，在紅(hong)(hong)外(wai)(wai)燈標稱(cheng)的(de)(de)(de)照(zhao)(zhao)射(she)距離內卻不能(neng)獲(huo)得清晰(xi)圖(tu)像(xiang)(xiang)，而不知(zhi)有的(de)(de)(de)攝(she)像(xiang)(xiang)機生產廠家給(gei)出的(de)(de)(de)照(zhao)(zhao)度(du)(du)有水分，或有意無意地使用了含糊的(de)(de)(de)低照(zhao)(zhao)度(du)(du)概念(nian)，視頻(pin)監控設備廠商，以所(suo)謂的(de)(de)(de)靶面照(zhao)(zhao)度(du)(du)代替景物照(zhao)(zhao)度(du)(du)；此外(wai)(wai)，有的(de)(de)(de)用戶(hu)(hu)對(dui)攝(she)像(xiang)(xiang)機照(zhao)(zhao)度(du)(du)之外(wai)(wai)影響獲(huo)得清晰(xi)圖(tu)像(xiang)(xiang)的(de)(de)(de)因素，如攝(she)像(xiang)(xiang)機和鏡(jing)頭(tou)的(de)(de)(de)標稱(cheng)尺寸、鏡(jing)頭(tou)光圈F、焦距f、對(dui)攝(she)像(xiang)(xiang)機功能(neng)要(yao)求等(deng)不十分了解。我們(men)認為現在向(xiang)電視監控器材經銷商、工(gong)程商和用戶(hu)(hu)介紹一些紅(hong)(hong)外(wai)(wai)燈的(de)(de)(de)原理、選擇(ze)和應用方(fang)法是有益的(de)(de)(de)。

報(bao)警(jing)(jing)(jing)時(shi)(shi)可調用(yong)(yong)全屏(ping)畫面并產生報(bao)警(jing)(jing)(jing)輸出(chu)信號啟(qi)動錄像(xiang)機(ji)(ji)或(huo)其它(ta)相關設(she)(she)備。也就是(shi)說，當報(bao)警(jing)(jing)(jing)信號產生時(shi)(shi)，與該警(jing)(jing)(jing)報(bao)相關區(qu)域的(de)(de)場景將以全屏(ping)畫面顯示出(chu)來，視(shi)頻(pin)監控(kong)設(she)(she)備標準，并可自(zi)(zi)動錄像(xiang)。用(yong)(yong)戶可自(zi)(zi)行(xing)設(she)(she)定(ding)警(jing)(jing)(jing)報(bao)的(de)(de)持(chi)續時(shi)(shi)間(jian)和錄像(xiang)的(de)(de)持(chi)續時(shi)(shi)間(jian)。報(bao)警(jing)(jing)(jing)輸入(ru)接口數目與畫面輸入(ru)數目相同；八個(ge)字(zi)符的(de)(de)攝像(xiang)機(ji)(ji)名稱。用(yong)(yong)戶可自(zi)(zi)已編(bian)程(cheng)(cheng)設(she)(she)定(ding)給每(mei)個(ge)攝像(xiang)機(ji)(ji)多達(da)八個(ge)字(zi)符的(de)(de)名稱；報(bao)警(jing)(jing)(jing)畫面疊加、視(shi)頻(pin)信號丟失指標。該功能可方便(bian)用(yong)(yong)戶快速檢查出(chu)現(xian)丟失的(de)(de)原(yuan)因；設(she)(she)置屏(ping)幕菜單編(bian)程(cheng)(cheng)/調用(yong)(yong)。編(bian)程(cheng)(cheng)簡單、操作(zuo)容易，人-機(ji)(ji)界(jie)面友好；電(dian)子保(bao)險(xian)鎖(suo)。用(yong)(yong)戶可自(zi)(zi)行(xing)設(she)(she)定(ding)密(mi)碼，文山視(shi)頻(pin)監控(kong)設(she)(she)備，被允許的(de)(de)操作(zuo)者才(cai)能進行(xing)系統的(de)(de)操作(zuo)。

在(zai)有多(duo)(duo)個(ge)(ge)(ge)攝像(xiang)機組成的(de)(de)(de)(de)(de)電(dian)視(shi)(shi)監(jian)(jian)(jian)控(kong)系統中，通常采(cai)用(yong)(yong)(yong)視(shi)(shi)頻切換(huan)(huan)器(qi)(qi)(qi)(qi)(qi)使(shi)(shi)多(duo)(duo)路圖(tu)(tu)像(xiang)在(zai)一臺監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)上輪流顯(xian)示(shi)(shi)。但有時(shi)為(wei)了(le)讓監(jian)(jian)(jian)控(kong)人員能(neng)同(tong)(tong)時(shi)看到所有監(jian)(jian)(jian)控(kong)點的(de)(de)(de)(de)(de)情況，往(wang)往(wang)采(cai)用(yong)(yong)(yong)多(duo)(duo)畫(hua)(hua)(hua)面分割(ge)器(qi)(qi)(qi)(qi)(qi)使(shi)(shi)得多(duo)(duo)路圖(tu)(tu)像(xiang)同(tong)(tong)時(shi)顯(xian)示(shi)(shi)在(zai)一臺監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)上。當采(cai)用(yong)(yong)(yong)幾臺多(duo)(duo)畫(hua)(hua)(hua)面分割(ge)器(qi)(qi)(qi)(qi)(qi)時(shi)，就(jiu)有可能(neng)用(yong)(yong)(yong)與多(duo)(duo)畫(hua)(hua)(hua)面分割(ge)器(qi)(qi)(qi)(qi)(qi)相(xiang)同(tong)(tong)數(shu)量的(de)(de)(de)(de)(de)監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)將(jiang)所有攝像(xiang)機傳送(song)來的(de)(de)(de)(de)(de)多(duo)(duo)個(ge)(ge)(ge)畫(hua)(hua)(hua)面同(tong)(tong)時(shi)顯(xian)示(shi)(shi)。這樣，視(shi)(shi)頻監(jian)(jian)(jian)控(kong)設(she)備電(dian)話，既減(jian)少了(le)監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)數(shu)量，又能(neng)使(shi)(shi)監(jian)(jian)(jian)控(kong)人員一目(mu)了(le)然地監(jian)(jian)(jian)視(shi)(shi)各個(ge)(ge)(ge)部(bu)位的(de)(de)(de)(de)(de)情況。常用(yong)(yong)(yong)的(de)(de)(de)(de)(de)畫(hua)(hua)(hua)面分割(ge)器(qi)(qi)(qi)(qi)(qi)為(wei)四畫(hua)(hua)(hua)面、九畫(hua)(hua)(hua)面和十六畫(hua)(hua)(hua)面。畫(hua)(hua)(hua)面分割(ge)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)基本工作原理(li)。采(cai)用(yong)(yong)(yong)圖(tu)(tu)像(xiang)壓(ya)縮(suo)和數(shu)字化處理(li)的(de)(de)(de)(de)(de)方法，把幾個(ge)(ge)(ge)畫(hua)(hua)(hua)面按同(tong)(tong)樣的(de)(de)(de)(de)(de)比例壓(ya)縮(suo)在(zai)一個(ge)(ge)(ge)監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)屏幕上。有的(de)(de)(de)(de)(de)還帶有內置(zhi)順序切換(huan)(huan)器(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)功能(neng)，此(ci)功能(neng)可將(jiang)各攝像(xiang)機輸入的(de)(de)(de)(de)(de)全屏畫(hua)(hua)(hua)面按順序和間隔時(shi)間輪流輸出顯(xian)示(shi)(shi)在(zai)監(jian)(jian)(jian)視(shi)(shi)器(qi)(qi)(qi)(qi)(qi)上(如同(tong)(tong)切換(huan)(huan)主機輪流切換(huan)(huan)畫(hua)(hua)(hua)面那樣)，并可用(yong)(yong)(yong)錄像(xiang)機按上述的(de)(de)(de)(de)(de)順序和時(shi)間間隔記錄下來。其間隔時(shi)間一般是(shi)可調的(de)(de)(de)(de)(de)。