The video cable, referred to as the video cable, is composed of a video cable and a connector. The video cable is a coaxial shielded cable with a characteristic impedance of 75Ω (Europe). The common specifications are divided into two parts: -3 and -5 according to the wire diameter. There are two types, single-core wire and multi-core wire according to the core wire. The common specifications of the connector are divided into two types according to the connection mode of the cable end. ), RCA (commonly known as lotus head) two kinds. Audio cable, referred to as audio cable, consists of two parts: audio cable and connector, among which: audio cable is generally two-core shielded cable, common connectors are RCA (commonly known as lotus head), XLR (commonly known as XLR), TRS JACKS (commonly known as inserting pen head).