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术语表Switcher切换器Video视频Audio音频YUVY、U、V分量视频数字视频接口DVI(DigitalVisualInterface)HDMI(HighDefinitionMultimediaInterface)高清晰度多媒体接口数字串行接口SDI(serialdigitalinterface)SDTV(Standard-DefinitionTelevision)标准清晰度电视HDTV(HighDefinitionTelevision)高清晰度电视YPbPr色差分量接口（隔行扫描）YCbCr色差分量接口（逐行扫描）VGA(VideoGraphicsArray)VGA接口简单网络管理协议SNMP(SimpleNetworkManagementProtocol)TR101.290DVB系统测量标准RU(RackUnit)标准计量单位（1RU44mm）9芯D型插座DB915芯D型插座DB15Lock锁定源Source控制母线C-Bus(Control-Bus)DataBus数据母线NodeBus节点母线ACPower交流电源交流AC(AlternatingCurrent)直流DC(DirectCurrent)接地GND(Ground)In输入输入端口Input视频输入VideoInputOut输出输出端口Output音频输出AudioOutputOn开Off关Level幅度,电平Alarm报警RS-232RS-232控制信号端口RS-422RS-422控制信号端口BNC(BayonetNutConnector)BNC接口RCA接口（莲花插AV接口)RCA(RadioCorporationofAmerican)座，交流耦合ACCouple直流耦合DCCoupleDCRestore直流恢复发送SendSalvo齐切TX(TranceiveData)发信号RX(Receiv