AS/NZS IEC 62676.3:2020 pdf download – Video surveillance systems for use in security applications Part 3: Analog and digital video interfaces.
3.1.3 analog video video signal made of a continuous electrical signal which contains the luminance (brightness) and chrominance (color) of the image Note 1 to entry: This video signal may be carried in separate channels, as in component video (YPbPr) and S- Video, or combined in one channel, as in composite video and RF connector. 3.1.4 BNC jack a type of connector used to input/output analog video signals, component video signals and serial digital video signals, with the female electrical contact or socket, and is the “more fixed” connector of a connector pair Note 1 to entry: Relevant specifications can refer to IEC 61 1 69-8. 3.1.5 channel one or more streams of video, audio and/or metadata that together constitute a unique entity for the purpose of surveillance 3.1.6 color depth pixel depth the number of bits used to represent the color of a single pixel in a bitmapped image or video frame buffer 3.1.7 component a software or hardware object, meant to interact with other components, encapsulating certain functionality or a set of functionalities with clearly defined interfaces and conforming to a prescribed behaviour common to all components within a standard 3.1.8 component video a type of analog video information which is transmitted or stored as three separate signals 3.1.9 composite video one format of analog video which contains all required video information in a single line-level signal, including three source signals called Y, U and V with sync pulses Note 1 to entry: It is usually in standard formats such as NTSC, PAL and SECAM. 3.1.1 0 composite video broadcast signal one type of composite video signal which transfers data with analog waveform
4.2.2.2 Digital video camera signal interface In the video surveillance field, digital video cameras should mainly include SDI, HD-SDI, 3G- SDI camera and network camera, separately prescribed as below: 4.2.2.3 Serial camera signal interface This kind of digital video camera should have the 75 Ω BNC jack for outputting the video signals of serial digital interface (SDI, HD-SDI, 3G-SDI, HDcctv). If the camera has an embedded microphone, it may have the female RCA or female 0,35 mm jack for outputting audio signal. In order to conveniently watching the live image via a portable monitor at the camera site during the system installation, the digital camera may have another 75 Ω BNC jack for outputting auxiliary composite video signal. 4.2.2.4 Parallel camera signal interface This kind of digital video camera should have dB25 connectors for outputting video signals of ITU-BT.601 , ITU-BT.656, ITU-BT.1 1 20 or SMPTE 1 25M. 4.2.2.5 Network camera interface Network camera should have network interface for digital video transmission via network. The physical interface of network camera should be the RJ45 jack which is connected to twisted pair cables such as CAT3, CAT5, CAT5e or CAT6 cables. In order to conveniently watch the video image over a portable monitor at the camera site during the system installation, network camera may have a 75 Ω BNC jack for outputting composite video signal. If the camera has an embedded microphone, it may have the female RCA or female 0,35 mm jack for outputting audio signal.
4.2.3.3 Digital video input interface A display monitor may use a number of digital video interfaces such as Digital Visual Interface (DVI), High-Definition Multimedia Interface (HDMI), Displayport and SDI. Those standards shall be based on the requirements of IEC 6231 5-1 , which defines the requirements on video outputs for uncompressed digital video interfaces and is applicable to a variety of standard digital video-related high-speed physical interfaces. DVI video interface should use DVI-D or DVI-I connectors. The connectors should be connected to DVI-D or DVI-I cables. HDMI video interface should use connectors defined in the HDMI1 .0, HDMI1 .3 and HDMI1 .4 specifications. The interface should use cables defined in the HDMI1 .4 specification. DisplayPort video interface should use connectors and cables compliant with DisplayPort version 1 .0, 1 .1 and 1 .2. SDI (SDI, HD-SDI/3G-SDI, HDcctv) interface should use the same connectors and cables as cameras with SDI output (see 4.2.2.3). 4.2.3.4 Display wall video input interface Multiple instances of interfaces described in analog video input interface (4.2.3.2) and digital video input interface (4.2.3.3) are used. No special new interface is specified. 4.2.3.5 Daisy chain display video output interface Sometimes a monitor also outputs received video signal to another monitor or video recording device. The output interface should be one of the analog or digital video interfaces described in camera signal interface 4.2.2 or display video input interface in 4.2.3. 4.2.4 Video processing and control equipment interface Video processing and control equipment includes video matrix/ switch/ quad/ multiplexer, etc. Matrix in VSS system can transmit analog and digital video signals from multiple inputs to multiple outputs. The connector should be consistent with specifications in 4.2.2 and 4.2.3.