Cable anti-interference ability testing device and method

Abstract

The present invention provides a cable anti-interference ability testing device and method. The cable anti-interference ability testing device includes a shielded test cavity, a signal generator, a radiating antenna, a transmitter and a receiver. The shielded test cavity is configured to place the radiating antenna and a cable to be tested and enable the cable to be tested to simulate its wiring method in an electronic device. The positions of the radiating antenna and the cable to be tested in the shielded test cavity are adjustable; the radiating antenna is connected to the signal generator signal to provide a radiated signal; the transmitter and the receiver are respectively configured to be connected to the two ends of the cable to be tested; thereby, the radiation interference of the radiating antenna in the electronic device on the cable to be tested can be simulated. When the cable to be tested is affected by the radiation signal of the radiating antenna, the signal transmitted by the cable to be tested is prone to bit errors. Therefore, the anti-interference ability of the cable to be tested can be accurately judged by comparing the difference between the signal transmitted by the transmitter and the signal received by the receiver.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic radiation testing devices, and in particular to a device and method for testing the anti-interference ability of a cable. Background Art

[0002] With the rapid development of the internet and electronic devices, people's work and entertainment activities are no longer confined to fixed locations. More portable electronic products have replaced traditional PCs and become people's first choice. At the same time, the performance and user experience of electronic products are becoming increasingly important. This requires electronic products to have stronger signals, higher power, and higher speeds. However, excessive power and speed can cause interference between cables and antennas within electronic products, significantly affecting the user experience. To prevent interference between cables and antennas within electronic products from affecting the user experience, the cable's anti-interference capability must be tested during the design phase. Currently, cable anti-interference testing generally provides indirect feedback on the cable's anti-interference ability by measuring parameters such as insertion loss and characteristic impedance, which results in low accuracy. Summary of the Invention

[0003] The object of the present invention is to provide a cable anti-interference ability testing device and method, which can simulate the radiation interference of the radiating antenna in the electronic device using the cable to be tested on the cable to be tested, and accurately test the anti-interference ability of the cable to be tested.

[0004] In order to achieve the above object, the present invention provides a cable anti-interference ability testing device, comprising a shielded test cavity, a signal generator, a radiating antenna, a transmitter and a receiver;

[0005] The shielded test cavity is configured to house the radiating antenna and the cable under test and enable the cable under test to be arranged in a manner that simulates the arrangement of cables in an electronic device. The positions of the radiating antenna and the cable under test in the shielded test cavity are adjustable.

[0006] The radiating antenna is signal-connected to the signal generator to provide a radiated signal;

[0007] The transmitter and the receiver are respectively configured to be connected to two ends of the cable to be tested. The transmitter is used to transmit a signal to the cable to be tested, and the receiver receives the signal through the cable to be tested.

[0008] Optionally, the cable anti-interference ability testing device further includes a bracket, the radiating antenna is provided on the bracket, and the bracket is adjustably installed in the shielding test cavity.

[0009] Optionally, the bracket includes a first rod portion, the radiating antenna is provided on the first rod portion, and the first rod portion is configured to slide along two opposite inner side walls of the shielding test cavity to adjust the position of the radiating antenna.

[0010] Optionally, the bracket further includes two second rod portions, which can slide up and down along the two inner walls respectively, and the two ends of the first rod portion are movably connected to the two second rod portions and can move along the length direction of the two second rod portions.

[0011] Optionally, a universal wheel is installed on the first rod portion, and the universal wheel can move along the length direction of the first rod portion, and the universal wheel is used to drive the radiating antenna to rotate relative to the first rod portion and move along the length direction of the first rod portion; the first rod portion and the second rod portion are respectively connected to pulleys, and the two ends of the first rod portion slide along the length direction of the two second rod portions through the pulleys, and the two second rod portions slide along the two inner walls through the pulleys respectively.

[0012] Optionally, the cable anti-interference ability testing device further includes a plurality of fixing devices, which are distributed on a plurality of inner walls of the shielding test cavity. By selecting different fixing devices for fixing, the position of the cable to be tested in the shielding test cavity can be adjusted.

[0013] Optionally, the shielded test cavity is grounded.

[0014] Optionally, the shielding test cavity is configured to be adjustable in size according to the size of an electronic device using the cable to be tested.

[0015] In order to achieve the above object, the present invention further provides a cable anti-interference ability testing method, which uses the cable anti-interference ability testing device as described above to test the anti-interference ability of the cable, comprising:

[0016] Simulating the wiring mode of the cable under test in the electronic device, placing the cable under test in the shielded test cavity, and connecting two ends of the cable under test to the transmitter and the receiver respectively;

[0017] Placing the radiating antenna in the shielded test cavity according to the relative positions of the cable to be tested and the radiating antenna in the electronic device, and connecting the radiating antenna to the signal generator for signal connection;

[0018] The transmitter is used to transmit a signal, and the signal generator is used to send a radiation signal to the radiation antenna, and the anti-interference capability of the cable to be tested is determined according to the signal received by the receiver.

[0019] Optionally, the shielded test cavity is grounded, and the cable to be tested is provided with a grounding position, and the method further includes:

[0020] Connect the grounding position of the cable to be tested to the shielding test cavity for grounding.

[0021] In the cable anti-interference ability testing device of the present invention, by making the cable to be tested simulate its wiring method in the electronic device to be arranged in the shielded test cavity, the position of the radiating antenna in the shielded test cavity is adjusted, and the relative positions of the radiating antenna and the cable to be tested in the shielded test cavity can simulate the relative positions of the radiating antenna and the cable to be tested in the electronic device, thereby simulating the radiation interference of the radiating antenna in the electronic device on the cable to be tested when the cable to be tested in the electronic device transmits a signal. When the cable to be tested is affected by the radiation signal of the radiating antenna, the signal transmitted by the cable to be tested is prone to bit errors. Therefore, the anti-interference ability of the cable to be tested can be accurately judged by comparing the difference between the signal transmitted by the transmitter and the signal received by the receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of a cable anti-interference ability testing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0024] In the description of the present invention, the directional words "up", "down", "left", "right", "front" and "back" are all defined when the cable anti-interference ability test device is set on a horizontal plane.

[0025] like Figure 1 As shown, an embodiment of the present invention discloses a cable anti-interference ability testing device, including a shielded test cavity 10, a signal generator 20, a radiating antenna 30, a transmitter 40 and a receiver 50; the shielded test cavity 10 is configured to place the radiating antenna 30 and the cable to be tested 60 and enable the cable to be tested 60 to simulate its wiring method in an electronic device for wiring, and the positions of the radiating antenna 30 and the cable to be tested 60 in the shielded test cavity 10 are adjustable; the radiating antenna 30 is connected to the signal generator 20 to provide a radiated signal; the transmitter 40 and the receiver 50 are respectively configured to be connected to both ends of the cable to be tested 60, the transmitter 40 is used to transmit a signal to the cable to be tested 60, and the receiver 50 receives the signal through the cable to be tested 60.

[0026] In an embodiment of the present invention, by arranging the cable 60 under test in the shielded test cavity 10 in a manner that simulates the arrangement of the cable 60 in an electronic device, and adjusting the position of the radiating antenna 30 in the shielded test cavity 10, the relative positions of the radiating antenna 30 and the cable 60 under test in the shielded test cavity 10 can simulate the relative positions of the radiating antenna 30 and the cable 60 under test in the electronic device, thereby simulating the radiation interference of the radiating antenna 30 in the electronic device on the cable 60 under test when the cable 60 under test in the electronic device transmits a signal. When the cable 60 under test is affected by the radiation signal of the radiating antenna 30, the signal transmitted by the cable 60 under test is prone to bit errors. Therefore, the anti-interference capability of the cable 60 under test can be accurately judged by comparing the difference between the signal transmitted by the transmitter 40 and the signal received by the receiver 50.

[0027] Since the embodiment of the present invention judges the anti-interference ability of the cable 60 under test by simulating the radiation interference of the radiation antenna 30 in the electronic device to the cable 60 under test, it has great reference significance and can also test the anti-interference ability of different cables, so that the cable 60 under test with strong anti-interference ability can be selected for use in the corresponding electronic device according to the test results.

[0028] In some specific examples, the cable 60 to be tested is arranged in the shielded test cavity 10 according to its wiring arrangement method in the electronic device. By adjusting the radiating antenna 30 to different positions to test the anti-interference ability of the cable 60 to be tested, it is possible to obtain the position where the radiating antenna 30 has the least radiation impact on the cable 60 to be tested. Therefore, the cable anti-interference ability testing device provided by the embodiment of the present invention can also be used to obtain the relative position of the radiating antenna 30 and the cable 60 to be tested when the radiating antenna 30 has the least impact on the cable 60 to be tested, so as to set the radiating antenna according to this position in the electronic device to improve the performance of the electronic device.

[0029] It should be noted that the transmitter 40 and the receiver 50 can be arranged inside the shielded test cavity 10 or outside the shielded test cavity 10; the cable to be tested 60 can be one cable or more than one cable.

[0030] In some embodiments, the bit error rate can be determined by comparing the codewords of the signal transmitted by the transmitter 40 and the signal received by the receiver 50. Of course, the transmitter 40 and the receiver 50 may not directly display the transmitted and received signals. In this case, whether a bit error has occurred can be determined by the operation of the receiver 50. For example, when the simulated electronic device is a laptop computer, the transmitter 40 can be the host computer of the laptop computer, and the receiver 50 can be the display screen of the laptop computer. When a bit error occurs or the signal-to-noise ratio is low, the laptop computer display screen may produce screen distortion or flickering. Therefore, whether a bit error has occurred can be determined by whether the display screen produces screen distortion or flickering during the test.

[0031] It is understandable that since the radiating antenna 30 needs to simulate the radiating antenna 30 in the electronic device of the cable to be tested 60, the position of the radiating antenna 30 in the shielded test cavity 10 needs to be set according to the relative positions of the radiating antenna 30 and the cable to be tested 60 in the electronic device. In addition, the signal generator 20 can be connected to the radiating antenna 30 through a wire, and in order to prevent the wire from affecting the test, a low-loss wire can be selected to connect to the radiating antenna 30. In order to simulate the radiating antenna in the electronic device, the radiating antenna 30 can choose an antenna type similar to the radiating antenna in the electronic device, and have the same directivity as the radiating antenna in the electronic device. In order to meet the needs of different radiating antennas in different electronic devices, the power range of the signal generator 20 needs to be large enough, adjustable and sensitive enough to meet the radiation intensity requirements of various antennas in various electronic devices.

[0032] In order to improve the efficiency and accuracy of the test, the maximum radiation power of the radiating antenna 30 can be selected to be 3-5dBm higher than the maximum radiation power required by the radiating antenna in the electronic device. During the test, the radiating antenna 30 simulates the extreme conditions of the signal power of the radiating antenna in the electronic device (emitting interference signals at the maximum radiation power of the radiating antenna 30). When under extreme conditions, the signal transmitted by the cable 60 under test does not generate bit errors, which indicates that the cable 60 under test has good anti-interference ability.

[0033] In order to facilitate the adjustment of the position of the radiating antenna 30 in the shielding test cavity 10, the cable anti-interference ability testing device also includes a bracket 70. The radiating antenna 30 is arranged on the bracket 70, and the bracket 70 is installed in the shielding test cavity 10 in an adjustable manner. Therefore, the position of the radiating antenna 30 can be adjusted by adjusting the position of the bracket 70 in the shielding test cavity 10.

[0034] Specifically, if Figure 1 As shown, the bracket 70 includes a first rod portion 71, and the radiating antenna 30 is arranged on the first rod portion 71. The first rod portion 71 is configured to slide along the two opposite inner walls of the shielding test cavity 10 to adjust the position of the radiating antenna 30. By sliding the first rod portion 71, the radiating antenna 30 can be driven to adjust its position.

[0035] Furthermore, the bracket 70 also includes two second rod portions 72, which can slide up and down along the two opposite inner walls of the shielding test cavity 10 respectively. The two ends of the first rod portion 71 are movably connected to the two second rod portions 72 and can move along the length direction of the two second rod portions 72. The two second rod portions 72 can slide up and down along the two opposite inner walls of the shielding test cavity 10 to drive the first rod portion 71 to move up and down. The first rod portion 71 can move along the length direction of the two second rod portions 72, which can drive the first rod portion 71 to move forward and backward, so that the radiating antenna 30 can be more conveniently controlled to adjust its position.

[0036] It can be understood that in order to facilitate the sliding of the two second rods 72 along the two opposite inner walls of the shielding test cavity 10, slide rails for the sliding of the second rods 72 can be provided on the two opposite inner walls of the shielding test cavity 10. When the second rods 72 slide to the corresponding position, the second rods 72 can be locked to be fixed in the corresponding position. Of course, various existing locking methods can be used to lock and fix the second rods 72. For example, the second rods 72 can be locked by bolts; the slide rails can also be set to a rack type, and the second rods 72 are correspondingly provided with a gear meshing with the rack. When there is no driving force on the second rod or the driving force is insufficient, the second rod does not move due to the meshing of the gear and the rack; and so on. The embodiment of the present invention does not impose any restrictions on this, as long as the second rod 72 can be fixed when it moves to the desired position.

[0037] Furthermore, a universal wheel 73 is installed on the first rod portion 71, and the universal wheel 73 can move along the length direction of the first rod portion 71. The universal wheel 73 is used to drive the radiating antenna 30 to rotate relative to the first rod portion 71 and move along the length direction of the first rod portion 71; the first rod portion 71 and the second rod portion 72 are respectively connected to pulleys 74, and the two ends of the first rod portion 71 slide along the length direction of the two second rod portions 72 through the pulleys 74, and the two second rod portions 72 slide along the two opposite inner walls of the shielding test cavity 10 through the pulleys 74. Among them, the universal wheel 73 can move along the length direction of the first rod part 71, and can drive the radiating antenna 30 to move along the length direction of the first rod part 71. The universal wheel 73 can also drive the radiating antenna 30 to rotate relative to the first rod part 71 to adjust the direction of the radiating antenna 30, so that different radiation surfaces (such as horizontal, vertical or other angles) can be selected to radiate the cable 60 to be tested. Therefore, the radiating antenna 30 adjusts its up and down position by sliding along the inner wall of the shielded test cavity 10 through the second rod part 72, adjusts its front and back position by sliding along the length direction of the second rod part 72 through the first rod part 71, adjusts its left and right position by moving along the length direction of the first rod part 71 through the universal wheel 73, and adjusts its radiation direction by rotating the universal wheel 73. The position of the radiating antenna 30 is precisely adjusted so that the relative position of the radiating antenna 30 and the cable 60 to be tested can completely correspond to the relative position of the cable 60 to be tested and the radiating antenna in the electronic device. The embodiment of the present invention does not limit the number of universal wheels 73. A single universal wheel 73 may be provided, with the radiating antenna 30 mounted on the universal wheel 73, or two or more spaced-apart universal wheels 73 may be provided to facilitate the installation of the radiating antenna 30. Similarly, the two second rods 72 may be respectively connected to one, two, or more pulleys 74 to slide along the inner wall of the shielding test chamber 10. When the second rods 72 are respectively connected to two or more pulleys 74, the sliding of the second rods 72 along the inner wall of the shielding test chamber 10 can be more balanced.

[0038] The provision of the universal wheel 73 and the pulley 74 facilitates the position and direction adjustment of the radiating antenna 30 and the sliding of the bracket 70. Of course, the embodiments of the present invention are not limited to the universal wheel 73 and the pulley 74, and the form of the bracket 70 is not limited to the first rod 71 and the second rod 72. As long as the position adjustment of the radiating antenna 30 in the shielded test cavity 10 can be achieved, it will be sufficient.

[0039] In order to be able to arrange the cable to be tested 60 in the shielding test cavity 10 according to the arrangement mode of the cable to be tested in the electronic device, the cable anti-interference ability testing device may further include a plurality of fixing devices 80, and the plurality of fixing devices 80 are distributed on the plurality of inner walls of the shielding test cavity 10. By selecting different fixing devices 80 for fixing, the position of the cable to be tested 60 in the shielding test cavity 10 can be adjusted, so that the cable to be tested 60 can be arranged at the corresponding position in the shielding test cavity 10 according to the arrangement mode of the cable to be tested 60 in the electronic device, so as to simulate the arrangement mode of the cable to be tested 60 in the electronic device.

[0040] Furthermore, the fixing device 80 can be configured as an insulating clamp, with multiple insulating clamps arranged in a crisscross pattern on multiple inner walls of the shielding test cavity 10, and the cable under test 60 is fixed in the shielding test cavity 10 by at least two insulating clamps at different positions. Of course, the fixing device 80 is not limited to an insulating clamp and can be configured as any other structure capable of fixing the cable under test 60.

[0041] It is understandable that, since the position of the cable under test 60 changes with its arrangement in the electronic device, the connection position of the cable under test 60 and the transmitter 40 and receiver 50 will also change accordingly. In order to adapt to this position change, multiple connection probes can be set on the inner wall of the shielding test cavity 10, so that the cable under test 60 can be connected to the transmitter 40 and the receiver 50 at any position through the connection probes at the corresponding position. Alternatively, multiple openings can be opened on the inner wall of the shielding test cavity 10, and the cable under test 60 is connected to the transmitter 40 and the receiver 50 through the openings at the corresponding positions. In order to prevent the openings from affecting the shielding effect of the shielding test cavity 10, flexible conductive glue or soft metal sheets can be set on the openings. The flexible conductive glue or soft metal sheet is provided with a through hole for the cable under test 60 to pass through. After the cable under test 60 passes through the through hole, the through hole can be completely blocked, thereby not affecting the shielding effect.

[0042] When the test result of the cable under test 60 is poor anti-interference ability (the signal received by the receiver 50 generates bit errors or a high bit error rate), improving the anti-interference ability of the cable under test 60 can effectively improve the performance of the electronic equipment. In some specific examples, the shielded test cavity 10 can be grounded. When the cable under test 60 is subjected to radiation interference from the radiating antenna 30 and generates bit errors, the cable under test 60 is connected to the shielded test cavity 10 for grounding to improve the anti-interference ability of the cable under test 60 and test the anti-interference ability of the cable under test 60 after grounding.

[0043] Specifically, the cable 60 to be tested can be subjected to a variety of shielding methods, such as single-point grounding, multi-point grounding, grounding at different positions, and grounding at different lengths, so as to achieve the shielding effect of the cable 60 to be tested on the interference signal. The anti-interference ability of the cable 60 to be tested, which is grounded according to different shielding methods, is tested respectively. The shielding method with the best effect can be selected from the multiple shielding methods, and the optimal solution can be provided for the cable 60 to be tested with poor anti-interference ability, thereby optimizing the anti-interference ability of the cable 60 to be tested.

[0044] It is understood that multiple grounding positions can be set on the cable under test 60 for grounding; or the cable under test 60 can be set to be grounded at each position, and any position can be selected for grounding as needed to achieve a shielding effect. The shielding test chamber 10 can be grounded at its bottom wall, side walls, etc.

[0045] In some specific examples, in order to better simulate the radiation interference of the radiating antenna in the electronic device on the cable to be tested 60, the shielding test cavity 10 can also be configured to be adjustable in size according to the size of the electronic device using the cable to be tested 60, so that the shielding test cavity 10 can be suitable for testing the anti-interference ability of cables of different electronic devices. In the embodiment of the present invention, the size of the shielding test cavity 10 can be adjusted by any existing size adjustment technology. For example, the shielding test cavity 10 can be assembled by multiple detachable plates, the bottom wall is formed by assembling multiple bottom plates, and each side wall is formed by assembling multiple side plates. The size of the shielding test cavity 10 can be changed by assembling different numbers of bottom plates and side plates; or the bottom wall and side walls of the shielding test cavity 10 can be set as a retractable structure; etc. The embodiment of the present invention is not limited to this, as long as the size of the shielding test cavity 10 can be adjusted.

[0046] An embodiment of the present invention further provides a cable anti-interference capability testing method, which uses the cable anti-interference capability testing device as described above to test the cable anti-interference capability, including:

[0047] Simulate the arrangement of the cable under test 60 in the electronic device, place the cable under test 60 in the shielded test cavity 10, and connect both ends of the cable under test 60 to the transmitter 40 and the receiver 50 respectively;

[0048] The radiating antenna 30 is placed in the shielded test cavity 10 according to the relative positions of the cable to be tested and the radiating antenna in the electronic device, and the radiating antenna 30 is connected to the signal generator 20 for signal connection;

[0049] The transmitter 40 transmits a signal, and the signal generator 20 transmits a radiation signal to the radiation antenna 30 , and the anti-interference capability of the cable 60 to be tested is determined according to the signal received by the receiver 50 .

[0050] Furthermore, the shielding test cavity 10 may be grounded, and the cable to be tested 60 may be provided with a grounding position. The cable anti-interference ability testing method further includes:

[0051] The grounding position of the cable to be tested 60 is connected to the shielded test cavity 10 for grounding.

[0052] When the test result of the cable under test 60 shows that the anti-interference ability is poor (the signal received by the receiver 50 generates bit errors or has a high bit error rate), improving the anti-interference ability of the cable under test 60 can also effectively improve the performance of the electronic equipment. The shielding test cavity 10 can be grounded, and then the grounding position of the cable under test 60 is connected to the shielding test cavity 10 to shield the radiated interference, so as to improve the anti-interference ability of the cable under test 60. The anti-interference ability of the grounded cable under test 60 can be tested to verify whether the anti-interference ability of the cable under test 60 is improved.

[0053] Specifically, the cable 60 to be tested can be subjected to a variety of shielding methods, such as single-point grounding, multi-point grounding, grounding at different positions, and grounding at different lengths, so as to achieve the shielding effect of the cable 60 to be tested on the interference signal. The anti-interference ability of the cable 60 to be tested after being grounded according to different shielding methods is tested separately. The shielding method with the best effect can be selected from a variety of shielding methods, and the optimal solution can be provided for the cable 60 to be tested with poor anti-interference ability, thereby improving the anti-interference ability of the cable 60 to be tested.

[0054] The above disclosure is merely a preferred embodiment of the present invention, which is intended to facilitate understanding and implementation by those skilled in the art. It certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A cable anti-interference ability testing device, characterized in that: Includes shielded test chamber, signal generator, radiating antenna, transmitter and receiver; The shielding test cavity is configured to house the radiating antenna and the cable under test and enable the cable under test to be arranged in a manner that simulates the arrangement of cables in an electronic device. The positions of the radiating antenna and the cable under test in the shielding test cavity are adjustable. The shielding test cavity is configured to adjust its size according to the size of the electronic device using the cable under test, and the position of the radiating antenna in the shielding test cavity is set according to the relative positions of the radiating antenna and the cable under test in the electronic device. The radiating antenna is signal-connected to the signal generator to provide a radiated signal; The transmitter and the receiver are respectively configured to be connected to the two ends of the cable under test, the transmitter is used to transmit a signal to the cable under test, and the receiver receives the signal through the cable under test. The bit error rate is determined by comparing the difference in code words between the signal transmitted by the transmitter and the signal received by the receiver.

2. The cable anti-interference ability testing device according to claim 1, characterized in that: It also includes a bracket, the radiating antenna is arranged on the bracket, and the bracket is installed in the shielding test cavity in an adjustable position.

3. The cable anti-interference ability testing device according to claim 2, characterized in that: The bracket includes a first rod portion, the radiating antenna is provided on the first rod portion, and the first rod portion is configured to slide along two opposite inner side walls of the shielding test cavity to adjust the position of the radiating antenna.

4. The cable anti-interference ability testing device according to claim 3, characterized in that: The bracket also includes two second rods, which can slide up and down along the two inner walls respectively. The two ends of the first rod are movably connected to the two second rods and can move along the length direction of the two second rods.

5. The cable anti-interference ability testing device according to claim 4, characterized in that: A universal wheel is installed on the first rod portion, and the universal wheel can move along the length direction of the first rod portion. The universal wheel is used to drive the radiating antenna to rotate relative to the first rod portion and move along the length direction of the first rod portion; the first rod portion and the second rod portion are respectively connected to pulleys, and the two ends of the first rod portion slide along the length direction of the two second rod portions through the pulleys, and the two second rod portions slide along the two inner side walls through the pulleys respectively.

6. The cable anti-interference ability testing device according to claim 1, characterized in that: It also includes multiple fixing devices, which are distributed on multiple inner walls of the shielding test cavity. By selecting different fixing devices for fixing, the position of the cable to be tested in the shielding test cavity can be adjusted.

7. The cable anti-interference ability testing device according to claim 1, characterized in that: The shielding test cavity is grounded.

8. A cable anti-interference ability testing method, comprising testing the cable anti-interference ability of a cable using the cable anti-interference ability testing device according to any one of claims 1 to 7, wherein: include: Simulating the wiring mode of the cable under test in the electronic device, placing the cable under test in the shielded test cavity, and connecting two ends of the cable under test to the transmitter and the receiver respectively; Placing the radiating antenna in the shielded test cavity according to the relative positions of the cable to be tested and the radiating antenna in the electronic device, and connecting the radiating antenna to the signal generator for signal connection; The transmitter is used to transmit a signal, and the signal generator is used to send a radiation signal to the radiation antenna, and the anti-interference capability of the cable to be tested is determined according to the signal received by the receiver.

9. The cable anti-interference ability testing method according to claim 8, characterized in that: The shielded test cavity is grounded, and the cable to be tested is provided with a grounding position. The method further includes: Connect the grounding position of the cable to be tested to the shielding test cavity for grounding.

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