This standard specifies the main RF technical parameters, limit requirements, and testing methods for wireless transmission equipment of video surveillance systems operating in the 336 MHz~344 MHz or 1785 MHz~1805 MHz frequency band. This standard applies to wireless transmission equipment operating in video surveillance systems in the frequency range of 336 MHz to 344 MHz or 1785 MHz to 1805 MHz, including base stations, relay stations, and portable stations. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 9254-2008 Limits and Measurement Methods for Radio Disturbance of Information Technology Equipment 3 Terms and Definitions, Abbreviations 3.1 Terms and Definitions The following terms and definitions apply to this document. 3.1.1 The video monitoring system transmits the video/audio signals collected by the video/audio collection equipment to the communication system of the monitoring center through wired or wireless transmission. 3.1.2 Wireless transmission device A device in a video surveillance system that transmits video/audio signals through wireless transmission. 3.1.3 Wireless transmission equipment that serves as a central or fixed station in the base station video monitoring system. 3.1.4 Relay Station Repeater is a device that relays and forwards audio and video signals transmitted by portable stations. The relay station can be installed on vehicles, ships, or aircraft and can also be used in a fixed position
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