Network port testing device and network port testing method

Abstract

The invention provides a network port testing device and a network port testing method, which can be applied to the technical field of network port testing. The network port testing device comprises a plurality of groups of differential signal lines; the plurality of first common-mode filters are used for filtering surge interference signals in a differential signal line for electrically connecting the first common-mode filters with the to-be-tested network port; the plurality of blocking protection modules are used for blocking surge interference signals in differential signal lines electrically connecting the blocking protection modules and the auxiliary equipment; the plurality of first switch units are used for switching on at least one first switch unit in response to common-mode detection or differential-mode detection, so that a surge interference signal is transmitted to a corresponding to-be-detected signal line through a corresponding differential signal line electrically connected with the at least one first switch unit; the to-be-tested signal lines transmit test data to the auxiliary equipment through the corresponding differential signal lines and the plurality of blocking protection modules, and the auxiliary equipment determines the to-be-tested signal lines with faults in the plurality of groups of to-be-tested signal lines according to the test data.

Description

Technical Field

[0001] This application relates to the field of network port testing technology, and more specifically to a network port testing device and a network port testing method. Background Technology

[0002] By maintaining and monitoring the network ports of the baseboard management controller within the server, the server can be managed systematically, thereby improving its reliability. Therefore, the network ports of the baseboard management controller need to have a certain degree of resistance to external interference to ensure normal data transmission and server management and maintenance. Consequently, interference testing is required on the multiple lines within the network port used for transmitting differential signals, so that maintenance can be performed on these lines based on the test results. Summary of the Invention

[0003] In view of the above problems, this application provides a network port testing device and a network port testing method.

[0004] According to a first aspect of this application, a network port testing device is provided, comprising: multiple sets of differential signal lines electrically connected to a surge interference generator; multiple first common-mode filters, each first common-mode filter being electrically connected to any set of differential signal lines, the first common-mode filters being used to filter surge interference signals in the differential signal lines that electrically connect the first common-mode filters and the network port under test; multiple blocking protection modules, each blocking protection module being electrically connected to any set of differential signal lines, the blocking protection module being used to block surge interference signals in the differential signal lines that electrically connect the blocking protection module and auxiliary equipment; and multiple first switching units connected in parallel with the multiple first common-mode filters, the first switching units being used to: in response to common-mode detection or differential-mode detection of at least one set of signal lines under test, conduct at least one first switching unit to allow surge interference signals to be transmitted to the corresponding signal line under test through the corresponding differential signal lines electrically connected to at least one first switching unit, and allow the signal line under test to transmit test data via the corresponding differential signal lines and the multiple blocking protection modules to the auxiliary equipment, the auxiliary equipment determining the faulty signal line under test among the multiple sets of signal lines under test based on the test data.

[0005] A second aspect of this application provides a network port testing method, comprising: in response to performing common-mode detection or differential-mode detection on at least one group of signal lines under test, turning on at least one first switching unit so that a surge interference signal is transmitted to the corresponding signal line under test through a corresponding differential signal line electrically connected to at least one first switching unit; the signal line under test transmits test data to an auxiliary device via the corresponding differential signal line and multiple blocking protection modules so that the auxiliary device determines the faulty signal line under test among the multiple groups of signal lines under test based on the test data.

[0006] According to an embodiment of this application, when it is necessary to test the anti-interference capability of multiple sets of signal lines under test in the network port of the server under test, the network port under test can be electrically connected to a network port testing device containing multiple sets of differential signal lines, multiple blocking protection modules, multiple first common-mode filters, and multiple first switching units. Multiple blocking protection modules are used to protect the signals and data on the auxiliary equipment side, preventing surge interference signals from flowing into the auxiliary equipment along the differential signal lines and causing damage. Then, in response to the current testing requirements of the signal lines under test, at least one first switching unit is turned on to perform common-mode or differential-mode detection on at least one set of signal lines under test. This achieves selective control of the conduction state of the first switching unit to control the conduction state of the first common-mode filter based on different testing requirements, thereby selectively transmitting surge interference signals to the signal lines under test and filtering surge interference signals in other differential signal lines, ensuring that the signal lines under test electrically connected to other differential signal lines are not subject to surge interference.

[0007] According to the embodiments of this application, common-mode detection is then performed on the test data transmitted by the interfered line using auxiliary equipment. This enables the faulty test line to be located from multiple test lines in a simple and easy-to-operate environment, improving the accuracy of common-mode detection and the efficiency of fault detection. This facilitates the adjustment of the interfered line and enhances the anti-interference capability of the line and the server. Attached Figure Description

[0008] The above-mentioned contents, other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0009] Figure 1 A schematic diagram of a network port testing device according to an embodiment of this application is shown;

[0010] Figure 2 A schematic diagram of a plurality of switching units and a plurality of first common-mode filters according to embodiments of the present application is shown;

[0011] Figure 3 A schematic diagram of a blocking protection module according to an embodiment of this application is shown;

[0012] Figure 4 A schematic diagram of a network port testing apparatus according to another embodiment of this application is shown;

[0013] Figure 5 A schematic diagram of a network port testing device according to yet another embodiment of this application is shown;

[0014] Figure 6 A schematic diagram of a network port testing device including a third network port connector according to an embodiment of this application is shown;

[0015] Figure 7 A schematic diagram of a network port testing device according to another embodiment of this application is shown;

[0016] Figure 8 A schematic diagram is shown illustrating the injection of surge interference signals into multiple sets of differential signal lines through resistors during common-mode detection according to an embodiment of this application;

[0017] Figure 9 A schematic diagram is shown illustrating the injection of surge interference signals into multiple sets of differential signal lines via coupling capacitors during differential mode detection according to an embodiment of this application;

[0018] Figure 10 A schematic diagram showing the layout of a network port testing device according to an embodiment of this application is provided;

[0019] Figure 11 A flowchart of a network port testing method according to an embodiment of this application is shown;

[0020] Figure 12 A flowchart of a network port testing method for common mode detection according to an embodiment of this application is shown. Detailed Implementation

[0021] The embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0023] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0024] When expressions such as "at least one of A, B, and C, etc." are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0025] Unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar words used in the embodiments of this application do not indicate any order, quantity, or importance, but are only used to distinguish different components.

[0026] Furthermore, in the description of the embodiments in this application, the terms "connected to" or "linked" can refer to two components being directly connected, or to two components being connected via one or more other components, with the connection method being electrical connection or electrical coupling. Additionally, these two components can also be connected or coupled via wired or wireless means.

[0027] By maintaining and monitoring the network ports of the baseboard management controller within the server, the server can be managed systematically, thereby improving its reliability. Therefore, the network ports of the baseboard management controller need to have a certain degree of resistance to external interference to ensure normal data transmission and server management and maintenance. Consequently, interference testing is required on the multiple lines within the network port used for transmitting differential signals, so that maintenance can be performed on these lines based on the test results.

[0028] An embodiment of this application provides a network port testing device, comprising: multiple sets of differential signal lines electrically connected to a surge interference generator; multiple first common-mode filters, each first common-mode filter being electrically connected to any set of differential signal lines, the first common-mode filters being used to filter surge interference signals in the differential signal lines that electrically connect the first common-mode filters and the network port under test; multiple blocking protection modules, each blocking protection module being electrically connected to any set of differential signal lines, the blocking protection module being used to block surge interference signals in the differential signal lines that electrically connect the blocking protection module and auxiliary equipment; and multiple first switching units connected in parallel with the multiple first common-mode filters, the first switching units being used to: in response to common-mode detection or differential-mode detection of at least one set of signal lines under test, conduct at least one first switching unit, so that surge interference signals are transmitted to the corresponding signal lines under test through the corresponding differential signal lines electrically connected to at least one first switching unit, and cause the signal lines under test to transmit test data through the corresponding differential signal lines and the multiple blocking protection modules to the auxiliary equipment, the auxiliary equipment determining the faulty signal lines under test among the multiple sets of signal lines under test based on the test data.

[0029] Figure 1 A schematic diagram of a network port testing device according to an embodiment of this application is shown.

[0030] like Figure 1 As shown, the network port testing device 101 can be electrically connected to the surge interference generator 103, the network port 105 under test in the server under test 104, and the auxiliary equipment 106. The network port testing device 101 may include multiple sets of differential signal lines 102, multiple blocking protection modules 107, multiple first common-mode filters 108, and multiple first switching units 109. The network port 105 under test may include multiple sets of signal lines under test.

[0031] Any one of the multiple first common-mode filters 108 can be electrically connected to any set of differential signal lines 102. A surge interference signal is generated using a surge interference generator 103, and then the surge interference signal applied by the surge interference generator 103 to any set of differential signal lines 102 corresponding to the first common-mode filter 108 is filtered using the first common-mode filter 108.

[0032] Any one of the multiple blocking protection modules 107 is electrically connected to any set of differential signal lines 102. The blocking protection module 107 is used to block surge interference signals in the differential signal lines that electrically connect the blocking protection module 107 and the auxiliary equipment 106.

[0033] Multiple first switching units 109 can be connected in parallel with multiple first common-mode filters 108. When it is necessary to perform common-mode detection or differential-mode detection on at least one set of signal lines under test, at least one first switching unit 109 can be configured to be in a conducting state, so that at least one first common-mode filter 108 connected in parallel with at least one first switching unit 109 is short-circuited, and multiple sets of signal lines under test are in an interference environment. Then, common-mode detection or differential-mode detection corresponding to the anti-interference capability is performed on at least one set of signal lines under test located in the network port 105 under test, and the common-mode detection result or differential-mode detection result corresponding to at least one set of signal lines under test is obtained.

[0034] After performing common-mode or differential-mode detection on multiple groups of signal lines under test simultaneously, it can be determined whether targeted common-mode or differential-mode detection is required for any one of the multiple groups of signal lines under test, based on the common-mode or differential-mode detection results corresponding to the multiple groups of signal lines under test.

[0035] For example, if the common-mode detection result of multiple sets of signal lines under test is a failure, it indicates that one or more sets of signal lines under test in the network port 105 under test are experiencing interference and have malfunctioned. This allows any one of the first switching units 109 in the network port testing device 101 to be turned on, while other first switching units 109 are turned off. This allows the surge interference signal generated by the surge interference generator 103 to be transmitted to the corresponding signal line under test through the corresponding differential signal line 102 electrically connected to the turned-on first switching unit 109. Meanwhile, the first common-mode filter 108, connected in parallel with the other turned-off first switching units 109, can filter the surge interference signals in the other differential signal lines 102, making it difficult for the surge interference signals to be transmitted to the other signal lines under test. Meanwhile, multiple blocking protection modules 107 can be used to block and isolate surge interference signals in the differential signal line 102 near the auxiliary equipment 106, so as to prevent surge interference signals from flowing into the auxiliary equipment 106 and affecting the normal operation of the auxiliary equipment 106.

[0036] Then, the test line that receives the surge interference signal can transmit the test data generated by the server to the auxiliary device 106, which is used to perform common mode detection on the test line based on the test data, via the corresponding differential signal line 102 and the blocking protection module 107. The auxiliary device 106 can determine whether the test line passes the common mode detection based on the transmitted test data.

[0037] If the common-mode test result of any group of test signal lines is passed, the above operation can be repeated for each first switch unit 109 in order to identify the faulty test signal line from multiple groups of test signal lines.

[0038] Similarly, the common-mode detection method described above can be used to perform differential-mode detection on multiple groups of signal lines under test. If the differential-mode detection result is a failure, differential-mode detection can be performed on any group of signal lines under test or any single signal line under test until the faulty signal line under test is identified from the multiple groups of signal lines under test.

[0039] If the common-mode test result or the differential-mode test result is a failure, it can be confirmed that the current test signal line is a faulty test signal line. The faulty test signal line can then be rectified and retested until the common-mode test result or the differential-mode test result of multiple test signal lines is a pass.

[0040] According to an embodiment of this application, when it is necessary to test the anti-interference capability of multiple sets of signal lines under test in the network port of the server under test, the network port under test can be electrically connected to a network port testing device containing multiple sets of differential signal lines, multiple blocking protection modules, multiple first common-mode filters, and multiple first switching units. Multiple blocking protection modules are used to protect the signals and data on the auxiliary equipment side, preventing surge interference signals from flowing into the auxiliary equipment along the differential signal lines and causing damage. Then, in response to the current testing requirements of the signal lines under test, at least one first switching unit is turned on to perform common-mode or differential-mode detection on at least one set of signal lines under test. This achieves selective control of the conduction state of the first switching unit to control the conduction state of the first common-mode filter based on different testing requirements, thereby selectively transmitting surge interference signals to the signal lines under test and filtering surge interference signals in other differential signal lines, ensuring that the signal lines under test electrically connected to other differential signal lines are not subject to surge interference.

[0041] According to the embodiments of this application, common-mode detection is then performed on the test data transmitted by the interfered line using auxiliary equipment. This enables the faulty test line to be located from multiple test lines in a simple and easy-to-operate environment, improving the accuracy of common-mode detection and the efficiency of fault detection. This facilitates the adjustment of the interfered line and enhances the anti-interference capability of the line and the server.

[0042] Figure 2 A schematic diagram of a plurality of first switching units and a plurality of first common-mode filters according to embodiments of the present application is shown.

[0043] like Figure 2 As shown, in the network port testing device 101, each group of differential signal lines may include a first differential signal line 201 and a second differential signal line 202, and each first switch unit may include a first switch Q1 and a second switch Q2. Any group of signal lines under test in the network port 105 may also include a first signal line under test and a second signal line under test. The first differential signal line 201 and the second differential signal line 202, as well as the first signal line under test and the second signal line under test, can all transmit test data or signals with opposite phases and the same amplitude. The connection lines between the control terminals of the first switch Q1 and the second switch Q2 and the auxiliary device 106 are not shown in the figure.

[0044] Multiple first common-mode filters in the network port testing device 101 can be arranged adjacent to the network port 105 under test. Each first common-mode filter may include: a first common-mode inductor L1, a second common-mode inductor L2, and a first magnetic core C1 disposed between the first common-mode inductor L1 and the second common-mode inductor L2. The first common-mode inductor L1 can be electrically connected to the first differential signal line 201, and the second common-mode inductor L2 can be electrically connected to the second differential signal line 202.

[0045] Since a first common-mode filter can be electrically connected to both the first differential signal line 201 and the second differential signal line 202 simultaneously, when the first common-mode filter is turned on, the surge interference signal applied to the first differential signal line 201 and / or the second differential signal line 202 can be filtered by utilizing the first common-mode inductor L1, the second common-mode inductor L2, and the first magnetic core C1 in the first common-mode filter.

[0046] The first terminal of the first switch Q1 is electrically connected to the first terminal of the first common-mode inductor L1 in the first common-mode filter, the second terminal of the first switch Q1 is electrically connected to the second terminal of the first common-mode inductor L1 in the first common-mode filter, and the control terminal of the first switch Q1 is electrically connected to the auxiliary device 106 for receiving control signals from the auxiliary device 106.

[0047] The first terminal of the second switch Q2 is electrically connected to the first terminal of the second common-mode inductor L2 in the first common-mode filter, the second terminal of the second switch Q2 is electrically connected to the second terminal of the second common-mode inductor L2 in the first common-mode filter, and the control terminal of the second switch Q2 is electrically connected to the auxiliary device 106 for receiving control signals from the auxiliary device 106.

[0048] The first switch Q1 and the second switch Q2 can both be switching transistors. By electrically connecting the control terminals of the first switch Q1 and the second switch Q2 to the auxiliary device 106 through signal lines, the auxiliary device 106 can generate control signals of different levels according to the current common-mode detection or differential-mode detection results, so as to control the conduction or disconnection of the first switch Q1 and the second switch Q2.

[0049] In the embodiments of this application, the source and drain of the switching transistor are symmetrical, so their sources and drains can be interchanged. In the embodiments of this application, based on their function, the gate can be called the control terminal, one of the source and drain can be called the first terminal, and the other of the source and drain can be called the second terminal. The following examples use an N-type thin-film transistor as an example for description. Those skilled in the art will understand that the embodiments of this application can obviously be applied to cases where the switching transistor is a P-type thin-film transistor.

[0050] According to embodiments of this application, each first common-mode filter is provided with a first switch and a second switch connected in parallel. Based on the specific types of the first and second switches, an effective control level is configured to match them, thereby enabling the switching of the first and second switches connected in parallel with the first common-mode filter to be controlled by a control signal of the effective level. This allows for precise control so that different test signal lines can selectively receive surge interference signals. This enables unified common-mode detection for multiple groups of test signal lines, as well as fault location for any group of test signal lines, thus adapting to various test requirements, improving test efficiency while reducing test costs.

[0051] Figure 3 A schematic diagram of a blocking protection module according to an embodiment of this application is shown.

[0052] like Figure 3 As shown, each blocking protection module may include a second common-mode filter 301 and a decoupling submodule 302. The second common-mode filter 301 may be connected in parallel with the decoupling submodule 302. The second common-mode filter 301 and the decoupling submodule 302 may be electrically connected to the first switching unit and the first common-mode filter.

[0053] One end of the second common-mode filter 301 can be electrically connected to any set of differential signal lines, and the other end can be electrically connected to the auxiliary device 106. The second common-mode filter 301 is used to filter surge interference signals in the differential signal lines that electrically connect the second common-mode filter 301 and the auxiliary device 106 in response to common-mode detection of at least one set of signal lines under test.

[0054] When performing common-mode detection on the signal line under test, the second common-mode filter 301 can be used to filter the surge interference signal in the differential signal line to prevent surge interference from flowing into the auxiliary equipment 106.

[0055] Multiple second common-mode filters 301 may be arranged adjacent to the auxiliary device 106. One end of any of the multiple second common-mode filters 301 is electrically connected to any set of differential signal lines, and the other end is electrically connected to the auxiliary device 106.

[0056] One end of the decoupling submodule 302 can be electrically connected to any set of differential signal lines, and the other end can be electrically connected to the auxiliary device 106. The decoupling submodule 106 is used to decouple the surge interference signal in the differential signal lines that electrically connect the decoupling submodule 302 and the auxiliary device 106 in response to differential mode detection of multiple sets of signal lines under test.

[0057] When performing differential mode detection on the signal line under test, the decoupling module 302 can be used to filter the surge interference signal in the differential signal line to prevent surge interference from flowing into the auxiliary equipment 106.

[0058] According to embodiments of this application, by setting multiple second common-mode filters for common-mode detection and multiple decoupling submodules for differential-mode detection, the second common-mode filters or decoupling submodules are invoked to filter or decouple in response to different test requirements, so as to avoid surges flowing into auxiliary equipment and causing damage to the auxiliary equipment, thereby improving the safety and accuracy of detection.

[0059] Figure 4 A schematic diagram of a network port testing apparatus according to another embodiment of this application is shown.

[0060] like Figure 4 As shown, in Figure 2 Based on the structure of the network port testing device 101 shown, the second common-mode filter or the decoupling module can be turned on or off by using a second switching unit connected in series with the second common-mode filter or a third switching unit connected in series with the decoupling submodule.

[0061] The second common-mode filter may include a third common-mode inductor L3, a fourth common-mode inductor L4, and a second magnetic core C2 disposed between the third common-mode inductor L3 and the fourth common-mode inductor L4. The third common-mode inductor L3 may be electrically connected to the first differential signal line 201, and the fourth common-mode inductor L4 may be electrically connected to the second differential signal line 202.

[0062] Since a second common-mode filter can be electrically connected to both the first differential signal line 201 and the second differential signal line 202 simultaneously, when the second common-mode filter is turned on, the surge interference signal applied to the first differential signal line 201 and / or the second differential signal line 202 can be filtered by utilizing the third common-mode inductor L3, the fourth common-mode inductor L4, and the second magnetic core C2 in the second common-mode filter, so as to prevent the surge interference signal from flowing into the auxiliary equipment.

[0063] Each decoupling submodule may include multiple decoupling inductors and multiple first diodes D1. One end of any decoupling inductor can be electrically connected to any differential signal line, and the other end of any decoupling inductor can be electrically connected to auxiliary device 106. The cathode of any first diode D1 can be electrically connected to any differential signal line, and the anode of any first diode D1 can be electrically connected to auxiliary device 106. The first diodes D1 can be connected in parallel with the decoupling inductors.

[0064] The surge interference signal flowing to the auxiliary device 106 is decoupled by using a decoupling inductor. At the same time, the first diode D1 is used to limit the reverse fault current generated by the fault from flowing into the auxiliary device 106 and clamp the noise in the surge interference signal, thereby avoiding damage to the auxiliary device 106.

[0065] Multiple second switching units can be connected in series with multiple second common-mode filters. The second switching units are used to turn on multiple second switching units in response to common-mode detection of at least one set of signal lines under test, so that multiple second common-mode filters can filter surge interference signals.

[0066] Multiple third switching units can be connected in series with multiple decoupling submodules. The third switching unit is used to conduct at least one third switching unit corresponding to at least one set of signal lines under test in response to differential mode detection of at least one set of signal lines under test, so that at least one decoupling submodule decouples the surge interference signal and transmits the test data to the auxiliary device 106.

[0067] The control terminals of the second and third switching units are both electrically connected to the auxiliary device 106 to receive control signals from the auxiliary device 106.

[0068] The second switching unit may include a third switch Q3 and a fourth switch Q4, and the third switching unit may include a fifth switch Q5 and a sixth switch Q6. The third switch Q3, the fourth switch Q4, the fifth switch Q5, and the sixth switch Q6 can all be switching transistors. By electrically connecting the control terminals of the third switch Q3, the fourth switch Q4, the fifth switch Q5, and the sixth switch Q6 to the auxiliary device 106 via signal lines, the auxiliary device 106 can generate first and second control signals of different levels based on the current common-mode detection or differential-mode detection results, thereby controlling the conduction or disconnection of the third switch Q3, the fourth switch Q4, the fifth switch Q5, or the sixth switch Q6.

[0069] The first terminal of the third switch Q3 can be electrically connected to the first terminal of the third common-mode inductor L3 in the second common-mode filter, and the second terminal of the third switch Q3 can be electrically connected to the second terminal of the third common-mode inductor L3 in the second common-mode filter.

[0070] The first terminal of the fourth switch Q4 is electrically connected to the third terminal of the fourth common-mode inductor L4 in the second common-mode filter, and the second terminal of the fourth switch Q4 is electrically connected to the fourth terminal of the fourth common-mode inductor L4 in the second common-mode filter.

[0071] The first terminal of the fifth switch Q5 can be electrically connected to the first terminal of the first decoupling inductor L5, and the second terminal of the fifth switch Q5 can be electrically connected to the first differential signal line 201.

[0072] The first terminal of the sixth switch Q6 can be electrically connected to the first terminal of the second decoupling inductor L6, and the second terminal of the sixth switch Q6 can be electrically connected to the second differential signal line 202.

[0073] According to embodiments of this application, a second switching unit connected in parallel with the second common-mode filter can be provided, and a third switching unit connected in series with the decoupling submodule can be provided. When performing common-mode detection on the signal line under test, the third and fourth switches in the second switching unit can be used to control the conduction or disconnection of the second common-mode filter. When performing differential-mode detection on the signal line under test, the fifth and sixth switches in the third switching unit can be used to control the conduction or disconnection of the decoupling inductor in the decoupling submodule. This allows for filtering or decoupling of different components of surge interference signals under different detection requirements, improving the safety and reliability of the detection environment.

[0074] In response to common-mode detection of at least one set of signal lines under test: when multiple first switching units are turned on and multiple second switching units are turned on, common-mode detection is performed on multiple sets of signal lines under test; when the common-mode detection result is a detection failure, any one of the first switching units and multiple second switching units are turned on, other first switching units except for any one of the switching units are turned off, and common-mode detection is performed on the signal line under test corresponding to any one of the first switching units.

[0075] In response to differential mode detection of at least one set of signal lines under test: when multiple first switching units and multiple third switching units are turned on, differential mode detection is performed on multiple sets of signal lines under test; when the differential mode detection result is a detection failure, any third switching unit and multiple first switching units are turned on, other third switching units except any third switching unit are turned off, and differential mode detection is performed on the signal line under test corresponding to any third switching unit.

[0076] For example, when common-mode detection of multiple sets of signal lines under test is required, the first, second, and third switching units are configured such that multiple first switches Q1, multiple second switches Q2, multiple third switches Q3, multiple fourth switches Q4, multiple fifth switches Q5, and multiple sixth switches Q6 are turned on when all control signals are at an active level. Surge interference signals are transmitted to the multiple sets of signal lines under test via multiple sets of differential signal lines, and test data from the multiple sets of signal lines under test are transmitted to auxiliary device 106 via multiple sets of differential signal lines to perform common-mode detection on the multiple sets of signal lines under test.

[0077] When the network port testing device 101 uses an NMOS (N-Channel Metal-Oxide-Semiconductor) transistor, the effective voltage level can be high. By sending a high-level control signal to the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, or the sixth switch Q6, the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, or the sixth switch Q6 can be turned on.

[0078] When it is necessary to perform common-mode detection on multiple sets of signal lines under test, the auxiliary device 106 can generate control signals that are all at a high level to turn on multiple first switches Q1 and multiple second switches Q2 in the network port test device 101, and short-circuit multiple first common-mode filters.

[0079] During the entire common-mode detection process, high-level control signals need to be sent to multiple third switches Q3 and multiple fourth switches Q4 to keep them on, and low-level control signals need to be sent to multiple fifth switches Q5 and multiple sixth switches Q6 to keep them off.

[0080] Then, the surge interference signal generated by the surge interference generator 103 is transmitted to multiple sets of test signal lines via multiple sets of differential signal lines. When the multiple sets of test signal lines receive the surge interference signal, they transmit the test data generated by the test server 104 to the auxiliary device 106 via multiple sets of differential signal lines. This allows the auxiliary device 106 to determine whether the multiple sets of test signal lines have passed the common-mode detection based on whether the test data has been received and the communication rate of the test data transmission.

[0081] If the auxiliary device 106 does not receive test data or the communication rate for transmitting test data is less than or equal to a predetermined threshold, the common-mode detection results of multiple sets of signal lines under test can be confirmed as a failure. If the auxiliary device 106 receives test data and the communication rate for transmitting test data is greater than the predetermined threshold, the common-mode detection results of multiple sets of signal lines under test can be confirmed as a success.

[0082] If the common-mode detection result of multiple sets of signal lines under test is a failure, a high-level control signal can be transmitted to the first switch Q1 and the second switch Q2 in any set of first switch units, while a low-level control signal can be transmitted to the first switch Q1 and the second switch Q2 in other first switch units.

[0083] This allows the first switch Q1 and the second switch Q2 in any group of first switching units to be turned on, the first common-mode filter connected in parallel with any group of first switching units to be short-circuited, and multiple first switches Q1 and multiple second switches Q2 in other first switching units to be turned off. Multiple first common-mode filters connected in parallel with other first switching units are turned on. Surge interference signals can be transmitted to the corresponding test signal line through the corresponding differential signal line electrically connected to any first switching unit, while surge interference signals in other differential signal lines can be filtered out by the first common-mode filters. This enables common-mode detection of the test signal line that receives surge interference signals, facilitating fault location.

[0084] Furthermore, the control signals used to control multiple first switches Q1 and multiple second switches Q2 can be set to a high level by default. Therefore, when a new network port 105 and a new signal line under test are detected, the common-mode test results of multiple sets of signal lines under test in the network port 105 can be obtained directly without initial control level settings. If the common-mode detection result of multiple sets of signal lines under test fails, a corresponding low-level control signal is generated for fault location.

[0085] When differential mode detection is required for multiple sets of signal lines under test, differential mode detection can be performed on the signal lines under test using the same method as the common mode detection method described above.

[0086] Before performing common-mode or differential-mode detection on any one of the signal lines under test, it is also possible not to perform unified common-mode or differential-mode detection on multiple sets of signal lines under test.

[0087] The auxiliary device 106 can send control signals of the same level to the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, or the sixth switch Q6 on the same set of differential signal lines. It can also send control signals of different levels to the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4, the fifth switch Q5, or the sixth switch Q6 on the same set of differential signal lines.

[0088] Furthermore, multiple decoupling capacitors can be provided in the decoupling submodule. The first terminal of the first decoupling capacitor is electrically connected to the second terminal of the first decoupling inductor L5, and the second terminal of the first decoupling capacitor is grounded. The first terminal of the second decoupling capacitor is electrically connected to the second terminal of the second decoupling inductor L6, and the second terminal of the second decoupling capacitor is grounded.

[0089] Simultaneously, a fourth switching unit can be configured with decoupling capacitors. This fourth switching unit can include a seventh switch and an eighth switch. The second terminal of the seventh switch can be electrically connected to the first terminal of the third common-mode inductor L3, and the first terminal of the seventh switch can be electrically connected to the second terminal of the first decoupling inductor L5. The first terminal of the eighth switch can be electrically connected to the first terminal of the fourth common-mode inductor L4, and the second terminal of the eighth switch can be electrically connected to the second terminal of the second decoupling inductor L6.

[0090] During common-mode detection, high-level control signals need to be sent to multiple third switches Q3 and multiple fourth switches Q4 to keep these switches on, and low-level control signals need to be sent to multiple fifth switches Q5, multiple sixth switches Q6, multiple seventh switches and multiple eighth switches to keep these switches off.

[0091] During differential mode detection, high-level control signals need to be sent to multiple first switches Q1 and multiple second switches Q2 to keep the switches on, and low-level control signals need to be sent to multiple third switches Q3 and multiple fourth switches Q4 to keep the switches off.

[0092] Then, based on the signal line under test, multiple fifth switches Q5, multiple sixth switches Q6, multiple seventh switches, and multiple eighth switches are adaptively turned on or off. For example, when performing differential mode detection on the first group of signal lines under test, multiple fifth switches Q5, multiple sixth switches Q6, multiple seventh switches, and multiple eighth switches corresponding to the first group of signal lines under test are turned on, while the remaining multiple fifth switches Q5, multiple sixth switches Q6, multiple seventh switches, and multiple eighth switches are turned off.

[0093] Figure 5 A schematic diagram of a network port testing apparatus according to yet another embodiment of this application is shown.

[0094] like Figure 5 As shown, in Figure 2 Based on the structure of the network port testing device 101 shown, a first network port connector 501, a second network port connector 502, and a cable connector 505 can also be provided. The server under test 104 can be electrically connected to the first network port connector 501 via a first network cable 503. The auxiliary device 106 can be electrically connected to the second network port connector 502 via a second network cable 504. The surge interference generator 103 can be electrically connected to the cable connector 505 via a cable 506 to transmit surge interference signals to multiple sets of differential signal lines.

[0095] The first and second common-mode filters can be selected to suit different circuits under test and test requirements, and other types of filters can be chosen.

[0096] The first network port connector 501 can be arranged adjacent to the network port under test 105. The first network port connector 501 can be used to electrically connect the network port under test 105 to multiple sets of differential signal lines. By connecting multiple sets of differential signal lines to the network port under test 105 and multiple sets of signal lines under test in the server under test 104 through the first network port connector 501, a transmission path for surge interference signals and test data is formed, so that surge interference signals and test data can be transmitted between multiple sets of differential signal lines and the network port under test 105.

[0097] The second network connector 502 can be arranged adjacent to the auxiliary device 106. The second network connector 502 can be used to electrically connect the auxiliary device 106 and multiple sets of differential signal lines. By connecting the multiple sets of differential signal lines to the auxiliary device 106 through the second network connector 502, a transmission path for test data is formed, so that test data can be transmitted between the auxiliary device 106 and the multiple sets of differential signal lines.

[0098] The first network port connector 501 and the second network port connector 502 can be selected to be compatible with the line under test that transmits signals and data. For example, the first network port connector 501 and the second network port connector 502 can be RJ45 (Registered Jack 45, network connection interface standard) network port connectors.

[0099] Furthermore, a backup server can be configured. The common-mode detection results of the backup network port and multiple differential signal transmission paths within the backup server are all successful. If the common-mode detection results for multiple sets of signal lines under test fail, the network port testing device can be electrically connected to the backup server using the first network cable. This allows surge interference signals to be transmitted to the backup signal lines within the backup server, and the backup signal lines then transmit the test data to the auxiliary device 106 via differential signal lines. The auxiliary device 106 obtains the common-mode detection result based on the test data. If the common-mode detection result is successful, it proves that the first network cable is not faulty; if the common-mode detection result is unsuccessful, it proves that the first network cable is faulty, thus enabling further precise location of the faulty line.

[0100] Figure 6 A schematic diagram of a network port testing device including a third network port connector according to an embodiment of this application is shown.

[0101] like Figure 6 As shown, in Figure 5Based on the structure of the network port testing device 101 shown, the auxiliary device 106 can be directly electrically connected to multiple first switches Q1 and multiple second switches Q2 via signal lines to transmit control signals to them. A third network port connector 601 can also be provided in the network port testing device 101. The third network port connector 601 can be electrically connected to the auxiliary device 106 via a third network cable 602, so that the auxiliary device 106 can be electrically connected to the control terminal of each switch via the third network port connector 601. The connection lines between the control terminals of the first switches Q1 and the second switches Q2 and the third network port connector 601 are not shown in the figure.

[0102] The third network connector 601 can be arranged adjacent to the auxiliary device 106. The third network connector 601 can be used to electrically connect the auxiliary device 106 to the control terminals of multiple first switches Q1 and multiple second switches Q2.

[0103] By setting the third network port connector 601, the control terminal of each switch inside the network port testing device 101 can be pre-connected to the connection line between the third network port connector 601, thereby improving the neatness and regularity of the line.

[0104] The third network connector 601 can be selected as a connector that is compatible with the line under test that transmits signals and data. For example, the third network connector 601 can be an RJ45 network connector.

[0105] According to embodiments of this application, a first network port connector and a second network port connector are provided to facilitate the management of signal data transmission lines. Simultaneously, a third network port connector can be used to organize and simplify the signal lines between auxiliary equipment and multiple first switches, multiple second switches, multiple third switches, multiple fourth switches, multiple fifth switches, and multiple sixth switches, thereby improving the internal layout simplicity of the network port testing device.

[0106] Furthermore, the network port testing device can also include a circuit board and a controller. The controller is powered by an electrical connection to the circuit board via a third network port connector. The control lines of each first switch and each second switch are then connected to the controller. At the start of each test, the controller automatically sends a default high-level first control signal and a second control signal to each first switch and second switch, facilitating automatic common-mode testing of multiple sets of signal lines under test. The auxiliary equipment can then send the test results to the controller via the third connector. Based on the test results, the controller automatically generates the corresponding on / off control program for the first and second switches, thereby achieving automatic detection and fault location of the signal lines under test, improving testing efficiency.

[0107] Figure 7A schematic diagram of a network port testing apparatus according to another embodiment of this application is shown.

[0108] like Figure 7 As shown, the first and second switches can be selected as ordinary switches. When the first and second switches in the first switch unit are selected as ordinary manual switches, the network port testing device 101 may not need a third network port connector. Figure 5 Based on the structure of the network port testing device 101 shown, the first manual switch SA1 and the second manual switch SA2 can be manually controlled to turn off and on according to the testing requirements, so as to locate the faulty signal line under test.

[0109] A surge interference generator may include a combined wave generator, multiple resistors, and multiple coupling modules.

[0110] Figure 8 A schematic diagram is shown illustrating the injection of surge interference signals into multiple sets of differential signal lines via resistors during common-mode detection according to an embodiment of this application.

[0111] like Figure 8 As shown, the surge interference generator may include a combined wave generator 801 and multiple resistors 802.

[0112] The combined wave generator 801 can be used to generate various surge interference signals adapted to different test requirements.

[0113] The first end of any one of the multiple resistors 802 can be electrically connected to the combined wave generator 801, and the second end of any one of the resistors 802 can be electrically connected to the corresponding differential signal line through the common mode test cable 803.

[0114] The number of resistors 802 can correspond to the number of multiple first differential signal lines 201 and multiple second differential signal lines 202. Each resistor 802 is connected to the connection point of each first differential signal line 201 and each second differential signal line 202 via a common-mode test cable 803. This allows surge interference signals to be transmitted to each differential signal line while simultaneously providing current-limiting protection for each differential signal line through the resistors 802. The resistance value of the resistors 802 can be selected according to different test requirements; for example, a resistance value of 180Ω can be chosen.

[0115] Figure 9 A schematic diagram is shown illustrating the injection of surge interference signals into multiple sets of differential signal lines via coupling capacitors during differential mode detection according to an embodiment of this application.

[0116] like Figure 9As shown, the coupling module may include a coupling capacitor C3 and a second diode D2. The first terminal of the coupling capacitor C3 is electrically connected to the combined wave generator 801, and the second terminal is electrically connected to the corresponding differential signal line. The anode of the second diode D2 is electrically connected to the first terminal of the coupling capacitor C3, and the cathode of the second diode D2 is electrically connected to the second terminal of the coupling capacitor C3.

[0117] The number of coupling capacitors C3 can correspond to the number of multiple first differential signal lines 201 and multiple second differential signal lines 202. Each coupling capacitor C3 is connected to the connection point of each first differential signal line 201 and each second differential signal line 202 through the differential mode test cable 901, so that the surge interference signal can be transmitted to each differential signal line while the surge interference signal is maintained by the coupling diode D2.

[0118] Figure 10 A schematic diagram showing the layout of a network port testing device according to an embodiment of this application is provided.

[0119] like Figure 10 As shown, the network port testing device can be electrically connected to the server under test 104 via a first network cable 503, to the auxiliary device 106 via a second network cable 504, and to the surge interference generator 103 via a cable 506. The network port testing device may include a protective enclosure 1001. The protective enclosure 1001, the auxiliary device 106, and the server under test 104 can all be electrically connected to the ground reference plane 1002 to provide a reference potential for common-mode or differential-mode testing.

[0120] The protective housing 1001 can accommodate multiple sets of differential signal lines, multiple first common-mode filters, multiple blocking protection modules, multiple first switching units, a first network port connector, a second network port connector, and a cable connector.

[0121] The protective housing 1001 can be made of a metallic material, such as iron or stainless steel. The grounding reference surface 1002 can be made of iron. If the first and second switches can be ordinary switches, the first and second switches can be located on the surface of the protective housing for easy operation.

[0122] Figure 11 A flowchart of a network port testing method according to an embodiment of this application is shown.

[0123] like Figure 11 As shown, the network port testing method includes operations S1110 to S1120.

[0124] In operation S1110, in response to performing common-mode detection or differential-mode detection on at least one set of signal lines under test, at least one first switching unit is turned on so that surge interference signal is transmitted to the corresponding signal line under test through the corresponding differential signal line electrically connected to at least one first switching unit.

[0125] During operation S1120, the signal line under test transmits test data to the auxiliary equipment via the corresponding differential signal line and multiple blocking protection modules, so that the auxiliary equipment can determine the faulty signal line among multiple groups of signal lines under test based on the test data.

[0126] According to an embodiment of this application, when it is necessary to test the anti-interference capability of multiple sets of signal lines under test in the network port of the server under test, in response to the current testing requirements of the signal lines under test, at least one first switch unit is turned on to perform common-mode detection or differential-mode detection on at least one set of signal lines under test. This achieves selective control of the conduction state of the first switch unit to control the conduction state of the first common-mode filter based on different testing requirements, thereby specifically transmitting surge interference signals to the signal lines under test and filtering surge interference signals in other differential signal lines, ensuring that the signal lines under test electrically connected to other differential signal lines are not subject to surge interference.

[0127] According to embodiments of this application, auxiliary equipment can then be used to perform common-mode detection on test data transmitted by interfered lines. This enables the location of faulty signal lines from multiple sets of test lines in a simple and easy-to-operate environment, improving the accuracy of common-mode detection and the efficiency of fault detection. This facilitates adjustments to interfered lines and enhances the anti-interference capabilities of the lines and servers.

[0128] If the auxiliary equipment does not receive test data or the communication rate for transmitting test data is less than or equal to a predetermined threshold, the common-mode detection results for multiple sets of signal lines under test are confirmed as failures. If the auxiliary equipment receives test data and the communication rate for transmitting test data is greater than a predetermined threshold, the common-mode detection results for multiple sets of signal lines under test are confirmed as successes.

[0129] Figure 12 A flowchart of a common-mode detection network port testing method according to an embodiment of this application is shown.

[0130] like Figure 12As shown, when it is determined that surge testing of multiple sets of signal lines under test within the network port of the server under test is required (S1201), all first switches and second switches are first turned on to short-circuit multiple first common-mode filters. Multiple third switches Q3 and multiple fourth switches Q4 remain on, while multiple fifth switches Q5 and multiple sixth switches Q6 remain off. Then, common-mode testing is performed on the multiple sets of signal lines under test. The auxiliary equipment determines whether the common-mode detection passes (S1202) based on the transmission status of the test data. If the common-mode detection result is a pass, the test is considered complete (S1203). If the common-mode detection result is a failure, the interfered signal line under test is identified and located.

[0131] First, close the first and second switches in the first first switching unit, and open the first and second switches in the remaining first switching units, so that the surge interference signal can only be transmitted to the first group of test signal lines through the first group of differential signal lines. Then, the auxiliary equipment detects the test data and obtains the detection result S1204 of the first group of test signal lines.

[0132] Then, the first and second switches in the second first switch unit are closed, and the first and second switches in the remaining first switch units are opened, so that the surge interference signal can only be transmitted to the second group of test signal lines through the second group of differential signal lines. Then, the auxiliary equipment detects the test data and obtains the detection result S1205 of the second group of test signal lines.

[0133] Then, close the first and second switches in the third first switch unit, and open the first and second switches in the remaining first switch units, so that the surge interference signal can only be transmitted to the third group of test signal lines through the third group of differential signal lines. Then, the auxiliary equipment detects the test data and obtains the detection result S1206 of the third group of test signal lines.

[0134] Finally, the first and second switches in the fourth first switch unit are closed, and the first and second switches in the remaining first switch units are opened, so that the surge interference signal can only be transmitted to the fourth group of test signal lines through the fourth group of differential signal lines. Then, the auxiliary equipment detects the test data and obtains the detection result S1207 of the fourth group of test signal lines.

[0135] Then, based on the detection results of the first group of signal lines under test, the second group of signal lines under test, the third group of signal lines under test, and the fourth group of signal lines under test, the signal lines under test with interference are located and adjusted. Then, common mode detection can be performed again (S1208), and it is determined whether the common mode detection results of all signal lines pass (S1209), until the common mode detection results of all signal lines pass, and the detection is confirmed to be complete (S1203).

[0136] According to embodiments of this application, program code for executing the computer programs provided in the embodiments of this application can be written in any combination of one or more programming languages. Specifically, these computational programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can be executed entirely on the user's computing device, partially on the user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0137] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0138] Those skilled in the art will understand that the features described in the various embodiments of this application can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this application. In particular, the features described in the various embodiments of this application can be combined and / or combined in various ways without departing from the spirit and teachings of this application. All such combinations and / or combinations fall within the scope of this application.

[0139] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Without departing from the scope of this application, those skilled in the art can make various substitutions and modifications, all of which should fall within the scope of this application.

Claims

1. A network port testing device, characterized in that, The network port testing device includes: Multiple sets of differential signal lines are electrically connected to the surge interference generator; Multiple first common-mode filters, any one of which is electrically connected to any set of differential signal lines, the first common-mode filter is used to filter the surge interference signal in the differential signal line that electrically connects the first common-mode filter and the network port under test; Multiple blocking protection modules are provided, any one of which is electrically connected to any one of the differential signal lines. The blocking protection module is used to block surge interference signals in the differential signal lines that electrically connect the blocking protection module and the auxiliary equipment. Multiple first switching units are connected in parallel with the multiple first common-mode filters. The first switching units are configured to: in response to common-mode detection or differential-mode detection of at least one group of signal lines under test, conduct at least one first switching unit so that the surge interference signal is transmitted to the corresponding signal line under test through the corresponding differential signal line electrically connected to the at least one first switching unit, and cause the signal line under test to transmit test data to the auxiliary device via the corresponding differential signal line and the multiple blocking protection modules. The auxiliary device determines the faulty signal line under test among the multiple groups of signal lines under test based on the test data.

2. The network port testing device according to claim 1, characterized in that, The first switching unit includes: A first switch, wherein a first terminal of the first switch is electrically connected to a first terminal of the first common-mode filter, a second terminal of the first switch is electrically connected to a second terminal of the first common-mode filter, and a control terminal of the first switch is electrically connected to the auxiliary device for receiving a first control signal from the auxiliary device; The second switch has a first terminal electrically connected to the third terminal of the first common-mode filter, a second terminal electrically connected to the fourth terminal of the first common-mode filter, and a control terminal electrically connected to the auxiliary device for receiving a second control signal from the auxiliary device.

3. The network port testing device according to claim 2, characterized in that, The blocking protection module includes: A second common-mode filter, one end of which is electrically connected to any set of differential signal lines and the other end of which is electrically connected to the auxiliary device, is used to filter surge interference signals in the differential signal lines that electrically connect the second common-mode filter and the auxiliary device in response to the common-mode detection of at least one set of signal lines under test. A decoupling submodule, one end of which is electrically connected to any set of differential signal lines and the other end of which is electrically connected to the auxiliary device, is used to decouple surge interference signals in the differential signal lines that electrically connect the decoupling submodule and the auxiliary device in response to differential mode detection of the multiple sets of signal lines under test.

4. The network port testing device according to claim 3, characterized in that, The decoupling submodule includes: Multiple decoupling inductors, one end of any decoupling inductor is electrically connected to any differential signal line, and the other end of any decoupling inductor is electrically connected to the auxiliary device; Multiple first diodes are provided, with the cathode of any one first diode electrically connected to any differential signal line and the anode of any one first diode electrically connected to the auxiliary device.

5. The network port testing device according to claim 2, characterized in that, The blocking protection module also includes: Multiple second switching units are connected in series with multiple second common-mode filters. The second switching units are used to turn on the multiple second switching units in response to common-mode detection of at least one set of signal lines under test, so that the multiple second common-mode filters can filter the surge interference signal. Multiple third switching units are connected in series with the multiple decoupling submodules. The third switching units are used to respond to differential mode detection of the at least one set of signal lines under test, and to turn on at least one third switching unit corresponding to the at least one set of signal lines under test, so that at least one decoupling submodule decouples the surge interference signal and transmits the test data to the auxiliary equipment.

6. The network port testing device according to claim 5, characterized in that, Common-mode detection of the at least one set of signal lines under test includes: When the plurality of first switching units are turned on and the plurality of second switching units are turned on, common-mode detection is performed on the plurality of sets of signal lines to be tested; If the common-mode detection result is a failure, turn on any first switch unit and the plurality of second switch units, turn off the other first switch units except for any one of the switch units, and perform common-mode detection on the signal line to be tested corresponding to any first switch unit; Differential mode detection of the at least one set of signal lines under test includes: When the plurality of first switching units and the plurality of third switching units are turned on, differential mode detection is performed on the plurality of sets of signal lines to be tested; If the differential mode detection result is a failure, turn on any third switch unit and the plurality of first switch units, and turn off the other third switch units except for any third switch unit, and perform differential mode detection on the signal line to be tested corresponding to any third switch unit.

7. The network port testing device according to claim 5, characterized in that, The control terminals of the second and third switching units are both electrically connected to the auxiliary equipment and are used to receive control signals from the auxiliary equipment.

8. The network port testing device according to claim 1, characterized in that, The network port testing device also includes: The first network port connector is used to electrically connect the network port under test to the multiple sets of differential signal lines, so that the surge interference signal and the test data are transmitted between the multiple sets of differential signal lines and the network port under test; The second network port connector is used to electrically connect the auxiliary device and the multiple sets of differential signal lines so that the test data can be transmitted between the auxiliary device and the multiple sets of differential signal lines. A cable connector is used to electrically connect the surge interference generator and the multiple sets of differential signal lines to transmit the surge interference signal to the multiple sets of differential signal lines.

9. The network port testing device according to claim 8, characterized in that, The server under test is electrically connected to the first network port connector via a first network cable, the auxiliary device is electrically connected to the second network port connector via a second network cable, and the surge interference generator is electrically connected to the cable connector via a cable.

10. The network port testing device according to claim 8, characterized in that, The network port testing device also includes: The third network port connector is used to electrically connect the auxiliary device to the control terminals of multiple first switches and multiple second switches.

11. The network port testing device according to claim 1, characterized in that, The network port testing device also includes: The protective enclosure is used to house the multiple sets of differential signal lines, the multiple first common-mode filters, the multiple blocking protection modules, and the multiple first switching units. The multiple first common-mode filters are arranged adjacent to the network port under test, and the multiple blocking protection modules are arranged adjacent to the auxiliary equipment.

12. The network port testing device according to claim 11, characterized in that, The protective housing, the auxiliary equipment, and the server under test are electrically connected to the ground reference plane to provide a reference potential for the common-mode detection.

13. The network port testing device according to claim 1, characterized in that, The surge interference generator includes: A combined wave generator is used to generate the surge interference signal according to test requirements; Multiple resistors, with the first end of any resistor electrically connected to the combined wave generator and the second end electrically connected to the corresponding differential signal line; Multiple coupling modules are provided, with the first end of any coupling module electrically connected to the combined wave generator and the second end electrically connected to the corresponding differential signal line. The coupling module is used to block the DC signal in the surge interference signal.

14. The network port testing device according to claim 13, characterized in that, The coupling module includes: A coupling capacitor, the first end of which is electrically connected to the combined wave generator, and the second end of which is electrically connected to the corresponding differential signal line; The second diode has its anode electrically connected to the first terminal of the coupling capacitor, and its cathode electrically connected to the second terminal of the coupling capacitor.

15. A network port testing method, applied to the network port testing apparatus according to any one of claims 1-14, characterized in that, include: In response to common-mode detection or differential-mode detection of at least one set of signal lines under test, at least one first switching unit is turned on so that the surge interference signal is transmitted to the corresponding signal line under test through the corresponding differential signal line electrically connected to the at least one first switching unit; The test signal line transmits test data to the auxiliary device via the corresponding differential signal line and the plurality of blocking protection modules, so that the auxiliary device can determine the faulty test signal line among the plurality of test signal lines based on the test data.

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