Receiving sensitivity measurement refers to the measurement of the minimum intensity of the RF signal required to be input according to regulations for the receiver or receiving equipment including printing, audible, and visual information output components, under the conditions of output reaching the specified usable strength and satisfactory quality, to evaluate its ability to receive weak signals. Due to the different types and uses of receiving devices, the specifications of input RF signals, the strength of output signals, and the parameters used to measure output quality also vary. Although standardizing the sensitivity testing methods for receiving devices for different purposes can increase their accuracy and comparability, it is still impossible for the same type of receiver to have good consistency in sensitivity when used for different purposes

Definition: Receiving sensitivity measurement refers to the measurement of the minimum intensity of the RF signal required to be input according to regulations for the receiver or receiving equipment including printing, audible, and visual information output components, under the conditions of output reaching the specified usable strength and satisfactory quality, to evaluate its ability to receive weak signals The reception sensitivity of wireless transmission is similar to people's hearing during communication and conversation. Improving the reception sensitivity of signals can make wireless products have stronger ability to capture weak signals. In this way, as the transmission distance increases, the received signal weakens, and highly sensitive wireless products can still receive data, maintain stable connections, and significantly improve the transmission distance. The reception sensitivity of ordinary 11g products is generally -85dBm. Currently, wireless products on the market have a maximum reception sensitivity of -105dBm, which is 20dB higher than ordinary products. The receiving sensitivity of a professional receiver can reach -120dBm. For every 3dB increase, the reception sensitivity doubles. Rx is the abbreviation for Receive. The transmission of radio waves is' go and no go '. When the signal energy at the receiving end is less than the nominal receiving sensitivity, the receiving end will not receive any data, which means that the receiving sensitivity is the minimum threshold that the receiving end can receive the signal The reception sensitivity is still expressed in dBm, and usually the reception sensitivity identified by WiFi wireless network devices (such as -83dBm) refers to a sensitivity level of 10-5 (99.999%) Bit Error Rate at a rate of 11Mbps. The reception sensitivity of wireless networks is very important. For example, when the transmission energy at the transmitting end is 100mW or 20dBm, if the reception sensitivity is -83dBm at an 11Mb rate, the theoretically transmitted unobstructed line of sight is 15km. However, when the reception sensitivity is -77dBm, the theoretically transmitted unobstructed line of sight is only half of 15Km (7.5km), or equivalent to a 1/4 reduction in the energy at the transmitting end, which is equivalent to 25mW or 14dBm