Radio frequency interference test device and test method
A radio frequency interference and testing device technology, applied in wired transmission systems, electrical components, transmission systems, etc., can solve the problems of low test accuracy, no test device, and long test time, and achieve high test efficiency, high accuracy, and insulation. good performance
Pending Publication Date: 2021-08-27
江苏三亿检测技术有限公司
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is that in the prior art, there is no professional test device when performing radio frequency interference testing, so it is easy to cause technical problems such as low test accuracy and long test time
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[0026] In the following, specific examples will be used to describe in detail and illustrate the technical solutions of the present invention.
[0027] Such as figure 1 As shown, it is a schematic diagram of the structure of the radio frequency interference test device. The radio frequency interference test device is placed in a shielding room, including a test table 1 and a storage table 2 arranged side by side. On the desktop 11 of the test table, copper plates 12 are laid in sequence from bottom to top. and an insulating plate 13; a network analyzer 3 is placed on the storage table 2, and a display screen 4 is electrically connected to the network analyzer 3; the network analyzer is a 4-port network analyzer, wherein in the signal port 31 of the network analyzer, two The first port is the signal transmitting end, and the two ports are the signal receiving end.
[0028] The height of the test table 1 is 80cm, the test table 1 is made of insulating material with εr2 , the le...
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The invention discloses a radio frequency interference testing device and a testing method, which are arranged in a shielding room and are used for testing radio frequency interference of a cable. The cable comprises a to-be-tested cable and an interference cable. The radio frequency interference test device comprises a test table and a storage table which are arranged side by side. A network analyzer is placed on the storage table, and a signal transmitting port and a signal receiving port are formed in the network analyzer; a to-be-tested cable and an interference cable are arranged on the test table and are connected with the network analyzer through a PCB. And a port, which is not connected to the network analyzer, on the PCB is blocked by a blocking resistor. The cable to be tested and the interference cable are arranged on the test table in a U-shaped bending mode, the distance between the cables and the distance between the cables and the edge of the insulating plate are limited, the radio frequency interference test device is installed in a shielding room, radio frequency interference test is carried out in the shielding room, and therefore the anti-interference performance is good and the accuracy rate is high in the test process.
Description
technical field [0001] The invention belongs to the technical field of industrial detection, and in particular relates to a radio frequency interference testing device and a testing method. Background technique [0002] Ethernet is a kind of local area network, and it is also the most widely used local area network at present, including standard Ethernet, fast Ethernet and 10G Ethernet. Coaxial cable, twisted pair and optical fiber can all be used as the connection medium of Ethernet. Among them, the coaxial cable has been gradually eliminated. In the automotive industry, twisted-pair cables, especially unshielded twisted-pair cables, are generally used as the connection medium. Unshielded twisted-pair cables can realize the development of 1000BASE-T technology. The signal-to-noise ratio, Performance data such as transmitting power and receiving sensitivity can intuitively reflect the performance of Ethernet. Therefore, it is very important to design Ethernet radio frequen...
Claims
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IPC IPC(8): H04B3/487
CPCH04B3/487
Inventor 马盼盼张婷董元佳陶刚
Owner 江苏三亿检测技术有限公司