设备没信号时，这4个检测方法你会做吗？
<section style="display:none;" data-tools="新媒体管家" data-label="powered by xmt.cn"><br></section><section style="line-height: 1.9;letter-spacing: 1.2px;font-size: 15px;color: rgb(113, 112, 113);box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;"></p><p style="box-sizing: border-box;"><br></p><p style="box-sizing: border-box;"><br></p></section><section style="margin: 10px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section style="transform: perspective(0px);-webkit-transform: perspective(0px);-moz-transform: perspective(0px);-o-transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 30px;margin-right: 0%;margin-left: 0%;transform: rotateY(180deg);box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 100%;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 70%;padding-left: 5px;box-sizing: border-box;"><section style="text-align: left;margin-right: 0%;margin-bottom: 10px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding-right: 20px;box-sizing: border-box;"><section style="transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);margin: 10px 0% -30px;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(41, 50, 57);box-sizing: border-box;"><p style="box-sizing: border-box;">我的设备没信号了，到底是网络问题还是供电问题？</p></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 60px;height: 40px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin: 10px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 15%;box-sizing: border-box;"><section style="transform: perspective(0px);-webkit-transform: perspective(0px);-moz-transform: perspective(0px);-o-transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;margin-top: 30px;margin-right: 0%;margin-left: 0%;transform: rotateY(180deg);box-sizing: border-box;"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 100%;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 70%;padding-left: 5px;box-sizing: border-box;"><section style="text-align: left;margin-right: 0%;margin-bottom: 10px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding-right: 20px;box-sizing: border-box;"><section style="transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);margin: 10px 0% -30px;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(41, 50, 57);box-sizing: border-box;"><p style="box-sizing: border-box;">是我布线的哪个环节出了问题？</p></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 60px;height: 40px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section 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10px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding-right: 20px;box-sizing: border-box;"><section style="transform: translate3d(20px, 0px, 0px);-webkit-transform: translate3d(20px, 0px, 0px);-moz-transform: translate3d(20px, 0px, 0px);-o-transform: translate3d(20px, 0px, 0px);margin: 10px 0% -30px;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(41, 50, 57);box-sizing: border-box;"><p style="box-sizing: border-box;">如何测试电压是否正常？</p></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 60px;height: 40px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: 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inline-block;width: 0px;height: 0px;vertical-align: top;overflow: hidden;border-style: solid;border-width: 6px 0px 6px 10px;border-color: rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgb(255, 216, 83);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 17px;letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(113, 112, 113);box-sizing: border-box;">一、网络测试篇</span></strong></p></section></section></section></section></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-style: solid;border-width: 1px;border-color: rgb(169, 207, 245);padding: 9px;box-sizing: border-box;"><section style="transform: rotateZ(180deg);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">如何使用ping命令？</span></strong></p></section></section></section></section><section style="display: inline-block;width: 100%;vertical-align: top;padding-top: 10px;padding-right: 10px;padding-left: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(106, 106, 106);text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">第一步</strong>：在局域网电脑上，键盘上按键“win+r”弹出运行提示框，输入“cmd”；</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="color: rgb(106, 106, 106);text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">第二步</strong>：点击确定，会弹出黑色窗口，输入一下命令，然后点击回车键。</p><p style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;color: rgb(219, 19, 40);box-sizing: border-box;">输入命令格式：</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">ping+空格+设备ip</span></p><p style="box-sizing: border-box;">比如：ping 10.3.4.24</p><p style="box-sizing: border-box;">电脑会发出4次通信，从而获知设备的网络连接状况。<span style="letter-spacing: 1.2px;box-sizing: border-box;">如下图，测试通的时候的界面：</span></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(95, 156, 239);box-sizing: border-box;"><strong style="box-sizing: border-box;">* 如何长ping测试是否有丢包?</strong></span></p><p style="white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;box-sizing: border-box;">输入命令格式：ping+空格+设备ip+ -t</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">，然后回车键。</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">例如：ping 10.1.7.77-t</span></p></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;border-left: 3px solid rgb(169, 207, 245);border-bottom-left-radius: 0px;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(3px, 0px, 0px);justify-content: flex-start;margin-top: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 0px;height: 0px;vertical-align: top;overflow: hidden;border-style: solid;border-width: 6px 0px 6px 10px;border-color: rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgb(255, 216, 83);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 17px;letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(113, 112, 113);box-sizing: border-box;">二、端口测试篇</span></strong></p></section></section></section></section></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-style: solid;border-width: 1px;border-color: rgb(169, 207, 245);padding: 9px;box-sizing: border-box;"><section style="transform: rotateZ(180deg);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">如何测试端口？</span></strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br></p></section><section style="color: rgb(106, 106, 106);text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">第一步</strong>：第一步：在局域网电脑上，键盘上按键“win+r”弹出运行提示框，输入“cmd”；</p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">第二步</strong>：<span style="letter-spacing: 1.2px;box-sizing: border-box;">点击确定，弹出黑色窗口，输入以下命令，然后点击回车键；</span></p><p style="box-sizing: border-box;"><span style="color: rgb(219, 19, 40);box-sizing: border-box;">输入命令格式：</span>telnet+设备外网ip+映射端口</p><p style="box-sizing: border-box;">测试后端口通，则是黑色的界面上有个光标在闪，如下图：</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">测试后端口不通，如下图：</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">端口测试不通怎么办？</span></strong></p></section></section></section></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">若端口测试不通，通常是网络做了端口限制，可放开限制端口或者修改设备端口号。 </p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;">录像机端口界面：</p></section><section style="text-align: center;margin-top: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><span style="font-size: 12px;letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(113, 112, 113);box-sizing: border-box;">NVR4.0 Lite界面</span></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: center;font-size: 12px;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">NVR3.0界面</p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">摄像机端口界面：</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">端口的修改范围：</strong>http端口在1--65535，服务端口在2000--65535，RTSP端口在1024--65535，三个端口号不要重复。</p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;"><span style="letter-spacing: 1.2px;background-color: rgba(1, 0, 0, 0);text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">当电脑测试的时候，提示“不是内部或外部命令”怎么办？</span></span></strong></p></section></section></section></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">原因：电脑没有开通telnet 功能，需要开启。</p><p style="white-space: normal;box-sizing: border-box;">步骤如下：（以win10系统为例）</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;">1.打开电脑“控制面板”进入“程序”界面，选择“启用或关闭Windows功能”。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-color: rgb(160, 160, 160);border-width: 1px;border-style: none;box-shadow: rgb(160, 160, 160) 0px 0px 3px;box-sizing: border-box;"></section></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(160, 160, 160) 0px 0px 3px;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">2.将“启用或关闭windows功能中”的“telnet客户端”打钩，点击“确定“，即可开启telnet服务。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;border-left: 3px solid rgb(169, 207, 245);border-bottom-left-radius: 0px;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(3px, 0px, 0px);justify-content: flex-start;margin-top: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 0px;height: 0px;vertical-align: top;overflow: hidden;border-style: solid;border-width: 6px 0px 6px 10px;border-color: rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgb(255, 216, 83);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 17px;letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(113, 112, 113);box-sizing: border-box;">三、网线检测篇</span></strong></p></section></section></section></section></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;background-color: rgba(169, 207, 245, 0.1);padding: 25px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(255, 189, 89);letter-spacing: 1.2px;background-color: rgba(0, 0, 0, 0);text-decoration-style: solid;text-decoration-color: rgb(255, 189, 89);box-sizing: border-box;">网络水晶头标准制作线序</span></strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">网络水晶头标准制作线序分<span style="color: rgb(255, 129, 36);box-sizing: border-box;">T568A</span>和<span style="color: rgb(95, 156, 239);box-sizing: border-box;">T568B</span></p><p style="box-sizing: border-box;"><br></p><p style="box-sizing: border-box;"><span style="color: rgb(255, 129, 36);box-sizing: border-box;">标准A接法:</span></p><p style="box-sizing: border-box;"><span style="color: rgb(255, 129, 36);box-sizing: border-box;">白绿绿 橙白蓝白蓝橙 白棕 棕</span></p><p style="box-sizing: border-box;"><span style="color: rgb(95, 156, 239);box-sizing: border-box;">标准B接法:</span></p><p style="box-sizing: border-box;"><span style="color: rgb(95, 156, 239);box-sizing: border-box;"> 白橙橙白绿蓝白蓝 绿 白棕 棕</span></p><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="box-sizing: border-box;">其中T568B较为常用</p></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">测试网络信号时，使用网线测线仪将网线的两头水晶头分别插入到远程测试端和主测试端，再打开测线仪电源。</strong></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-style: solid;border-width: 1px;border-color: rgb(169, 207, 245);padding: 9px;box-sizing: border-box;"><section style="transform: rotateZ(180deg);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;"><span style="letter-spacing: 1.2px;background-color: rgba(1, 0, 0, 0);text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">如何检测网线是否通？</span></span></strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(95, 156, 239);box-sizing: border-box;"><strong style="letter-spacing: 1.2px;box-sizing: border-box;">直通线的测试：</strong></span><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;">测试直通线时，主测试仪的指示灯应该从1到8逐个顺序闪亮，而远程测试端的指示灯也应该从1到8逐个顺序闪亮。如果是这种现象，说明直通线的连通性没问题，否则就得重做。</p><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 13px;box-sizing: border-box;">（直通线：两端采用同样的接法，注意两端都是同样的线序且一一对应。）</span></p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(95, 156, 239);box-sizing: border-box;"><strong style="box-sizing: border-box;">交错线的测试：</strong></span></p><p style="white-space: normal;box-sizing: border-box;">测试交错连线时，主测试仪的指示灯应该从1到8逐个顺序闪亮，而远程测试端的指示灯应该是按着3、6、1、4、5、2、7、8的顺序逐个闪亮。如果是这样，说明交错连线连通性没问题，否则就得重做。</p><p style="white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;font-size: 13px;box-sizing: border-box;">（交叉线：又叫反线，线序按照一端568A，一端568B的标准排列好线序，并用RJ45水晶头夹好。）</span></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;border-left: 3px solid rgb(169, 207, 245);border-bottom-left-radius: 0px;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(3px, 0px, 0px);justify-content: flex-start;margin-top: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 0px;height: 0px;vertical-align: top;overflow: hidden;border-style: solid;border-width: 6px 0px 6px 10px;border-color: rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgba(255, 255, 255, 0) rgb(255, 216, 83);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;flex: 0 0 auto;align-self: center;min-width: 10%;max-width: 100%;height: auto;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 17px;letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(113, 112, 113);box-sizing: border-box;">四、<span style="font-size: 18px;letter-spacing: 4px;text-align: center;background-color: rgba(1, 0, 0, 0);text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">电源检测篇</span></span></strong></p></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 2em;box-sizing: border-box;">我们有时会遇到监控画面时有时无、通道提示“网络不可达”、摄像机红外灯一闪一闪等现象，这个时候可能是<strong style="box-sizing: border-box;">因为设备供电不稳定导致</strong>，建议检查设备的供电是否正常。机身标签上都会标注设备的供电规格，官网上也可以查询到，如下图：</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-style: solid;border-width: 1px;border-color: rgb(169, 207, 245);padding: 9px;box-sizing: border-box;"><section style="transform: rotateZ(180deg);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 100px;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;text-align: left;justify-content: flex-start;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;margin-right: 4px;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 10px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 0 0 0%;height: auto;align-self: flex-end;box-sizing: border-box;"><section style="transform: perspective(0px);transform-style: flat;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;transform: rotateX(180deg);box-sizing: border-box;"><section style="display: inline-block;width: 3px;height: 16px;vertical-align: top;overflow: hidden;background-color: rgb(169, 207, 245);box-sizing: border-box;"><section><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;border-bottom: 1px solid rgb(169, 207, 245);border-bottom-right-radius: 0px;flex: 0 0 auto;align-self: flex-end;min-width: 10%;max-width: 100%;height: auto;padding: 4px 4px 4px 11px;box-sizing: border-box;"><section style="text-align: justify;font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;text-decoration-style: solid;text-decoration-color: rgb(255, 255, 255);box-sizing: border-box;">万用表的使用方法：</span></strong></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 2em;white-space: normal;box-sizing: border-box;">万用表是我们在监控弱电场景中常用的工具，这里简单介绍一下万用表的常用基本功能。</p><p style="text-indent: 2em;white-space: normal;box-sizing: border-box;">我们常用万用表测试的有短路、交流电压、直流电压、电阻、电流等。红笔为正，黑笔为负，测量时，一定要先核对测量类别以及量程，若事先无法估计量程，尽量选择交大量程，然后根据数值逐步换到较小的量程。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="color: rgb(106, 106, 106);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(95, 156, 239);font-size: 16px;box-sizing: border-box;"><strong style="box-sizing: border-box;">测试方法：</strong></span></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">1.怎么测短路？</strong></p><p style="white-space: normal;box-sizing: border-box;">先把开关档调到蜂鸣档上，要测试导线的物体两端分别接触到表笔的金属针头，如果有嘟嘟的声音，说明导线导通，否则断开。</p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">2.怎么测电阻？</strong></p><p style="white-space: normal;box-sizing: border-box;">先把开关档调到测电阻的档位上，两只表笔短接归零。表笔的金属针头分别接触被测物体的两极，显示屏会显示具体数值。注意，测电阻时不能带电测。</p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">3.怎么测电流？</strong></p><p style="white-space: normal;box-sizing: border-box;">先把开关档调到电流档，测电流需要将万用表串联在被测电路中。</p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">4.怎么测直流电压？</strong></p><p style="white-space: normal;box-sizing: border-box;">先把开关档调到直流电压档，表笔的金属针头分别接触要测试有没有电压的端子上，如果有电压数字表会显示出电压值是多少。</p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">5.怎么测交流电压？</strong></p><p style="white-space: normal;box-sizing: border-box;">先把开关档调到交流电压档，表笔的金属针头分别接触要测试有没有电压的端子上，如果有电压数字表会显示出电压值是多少。</p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" 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