A differential cable test fixture

Abstract

The application relates to a differential cable test clamp which comprises a radio frequency adapter, a replaceable adapter, a clamp base, a quick manual screw and a pressing block; the radio frequency adapter is connected with the replaceable adapter, the replaceable adapter is connected with one end of the clamp base, a high-speed differential copper cable is arranged on the clamp base, the high-speed differential copper cable is compressed through the quick manual screw and the pressing block, and one end of the high-speed differential copper cable is connected with the replaceable adapter. The radio frequency adapter comprises a coaxial connector and a coaxial conversion parallel line cavity; the coaxial connector is connected with one side of the coaxial conversion parallel line cavity, and the other side of the coaxial conversion parallel line cavity is connected with the replaceable adapter. The replaceable adapter comprises a contact head main body, parallel line medium and double-head spring needles. The application aims at overcoming the existing defects and providing the differential cable test clamp, and solves the test problem of the super-high-speed 224Gbps high-speed cable.

Description

TECHNICAL FIELD

[0001] The present application relates to a differential cable test fixture. BACKGROUND

[0002] In the artificial intelligence (AI) large-scale cluster server and GPU (graphics processing unit) interconnection, high-speed copper cable is a more economical choice compared with optical communication. With the adoption of high-speed copper cable solution by Nvidia in NV link (high-speed interconnection technology), this traditional technology has experienced explosive growth. In the future, it is expected to have a compound annual growth rate of up to 45% per year. As a traditional manufacturing country, the industry is complete and the technology reserve is sufficient. In this wave of industrial explosion, it will occupy 50% of the global market share. Currently, only overseas outsourcing business will grow by 100% in the future. After the AI industry matures, the market size will double or triple.

[0003] Therefore, high-speed copper cables need to be upgraded from the traditional 10Gbps, 40Gbps to 112Gbps, 224Gbps. Ordinary manufacturing equipment and test devices cannot meet the requirements and need to be upgraded on a large scale.

[0004] The existing test of super-high-speed 224Gbps high-speed cable has the problems of low test precision, poor indicators, poor adaptability, and frequency that cannot meet the requirements. Therefore, a differential cable test fixture is proposed to solve the above problems. SUMMARY

[0005] The present application aims to overcome the existing defects and provide a differential cable test fixture, which solves the problem of testing super-high-speed 224Gbps high-speed cable.

[0006] The technical solution to achieve the above-mentioned purpose is: a differential cable test fixture, comprising a radio frequency adapter, a replaceable adapter, a fixture base, a quick manual screw, and a pressing block.

[0007] The radio frequency adapter is connected to the replaceable adapter, the replaceable adapter is connected to one end of the fixture base, a high-speed differential copper cable is arranged on the fixture base, the high-speed differential copper cable is pressed by the quick manual screw and the pressing block, and one end of the high-speed differential copper cable is connected to the replaceable adapter.

[0008] Preferably, the radio frequency adapter comprises a coaxial connector and a coaxial-to-parallel line cavity; the coaxial connector is connected to one side of the coaxial-to-parallel line cavity, and the other side of the coaxial-to-parallel line cavity is connected to the replaceable adapter.

[0009] Preferably, the replaceable adapter comprises a contact head body, a parallel line medium and a double-head spring needle; the parallel line medium is connected in the hole of the contact head body, the double-head spring needle is connected in the parallel line medium, the left end of the double-head spring needle is connected with the coaxial conversion parallel line cavity, and the right end is connected with the high-speed differential copper cable.

[0010] Preferably, the contact head body is provided with a contact inclined surface near one end of the high-speed differential copper cable, and the high-speed differential copper cable penetrates through the contact inclined surface and is connected with the right end of the double-head spring needle.

[0011] Preferably, a sunken table is arranged at the left end of the upper end surface of the clamp base, two limiting seats are connected on both sides of the bottom surface of the sunken table through fixing screws, and the contact head body is located between the two limiting seats.

[0012] Preferably, a groove is arranged on the clamp base, and the high-speed differential copper cable is located in the groove.

[0013] Preferably, the coaxial connector and the coaxial conversion parallel line cavity are connected through a plurality of first fastening screws.

[0014] Preferably, the coaxial conversion parallel line cavity is connected on the clamp base and the side walls of the two limiting seats through a plurality of second fastening screws.

[0015] The differential cable test clamp has the advantages that the replaceable adapter is connected through the radio frequency adapter, the replaceable adapter is connected at one end of the clamp base, the high-speed differential copper cable is arranged on the clamp base, the high-speed differential copper cable is pressed by the quick manual screw and the pressing block, and one end of the high-speed differential copper cable is connected with the replaceable adapter; the test of the ultra-high-speed 224Gbps high-speed cable can be realized, the test precision is high, the adaptability is strong, and the test requirements of high frequency are met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall connection top view of the differential cable test clamp of the application;

[0017] Figure 2 is the overall connection axial view of the differential cable test clamp of the application;

[0018] Figure 3 is the exploded view of the differential cable test clamp of the application;

[0019] Figure 4 is the detail view of the radio frequency adapter of the application;

[0020] Figure 5 is the detail view of the replaceable adapter of the application;

[0021] Figure 6This is a cross-sectional view of the connection of the double-headed spring needle of the present invention.

[0022] In the diagram: 1. First fastening screw; 2. Coaxial connector; 3. Coaxial to parallel line cavity; 4. Double-ended spring pin; 5. Replaceable adapter; 6. Clamp base; 7. Fixing screw; 8. Quick manual screw; 9. Pressure block; 10. High-speed differential copper cable; 11. Contact head body; 12. Parallel line medium; 13. Contact bevel; 14. RF adapter; 15. Recessed platform; 16. Limiting seat; 17. Groove; 18. Second fastening screw. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] like Figures 1-6 As shown, a differential cable test fixture includes an RF adapter 14, a replaceable adapter 5, a fixture base 6, a quick-release screw 8, and a clamping block 9. The RF adapter 14 is connected to the replaceable adapter 5, which is connected to one end of the fixture base 6. A high-speed differential copper cable 10 is mounted on the fixture base 6 and is clamped by the quick-release screw 8 and the clamping block 9. One end of the high-speed differential copper cable 10 is connected to the replaceable adapter 5.

[0026] like Figure 4 As shown, the RF adapter 14 includes a coaxial connector 2 and a coaxial-to-parallel cavity 3; the coaxial connector 2 is connected to one side of the coaxial-to-parallel cavity 3, and the coaxial connector 2 and the coaxial-to-parallel cavity 3 are connected by a plurality of first fastening screws 1. A replaceable adapter 5 is connected to the other side of the coaxial-to-parallel cavity 3. The coaxial-to-parallel cavity 3 is connected to the side walls of the clamp base 6 and the two limiting seats 16 by a plurality of second fastening screws 18.

[0027] like Figure 5 , 6As shown, the replaceable adapter 5 includes a contact head body 11, a parallel line medium 12 and a double-head spring needle 4; the parallel line medium 12 is connected in the hole of the contact head body 11, the double-head spring needle 4 is connected in the parallel line medium 12, the left end of the double-head spring needle 4 is connected with the coaxial rotary parallel line cavity 3, and the right end is connected with the high-speed differential copper cable 10. The contact head body 11 is provided with a contact inclined surface 13 close to one end of the high-speed differential copper cable 10, and the high-speed differential copper cable 10 penetrates through the contact inclined surface 13 to connect the right end of the double-head spring needle 4.

[0028] Specifically, the upper end face of the clamp base 6 is provided with a sunk table 15 at the left end, two limiting seats 16 are connected on both sides of the bottom surface of the sunk table 15 through fixing screws 7, and the contact head body 11 is located between the two limiting seats 16. The clamp base 6 is provided with a groove 17, and the high-speed differential copper cable 10 is located in the groove 17.

[0029] Specifically, the coaxial connector 2 is fixed on the coaxial rotary parallel line cavity 3 through a plurality of first fastening screws 1 to form a component radio frequency adapter 14. The coaxial rotary parallel line cavity 3 converts single-port coaxial radio frequency transmission into high-speed differential transmission through microwave matching conversion. The radio frequency adapter 14 is connected to the replaceable contact head 5 through a second fastening screw 18. The replaceable contact head 5 is composed of a contact head body 11, a parallel line medium 12 and a double-head spring needle 4. The contact inclined surface 13 provided on the contact head body 11 is in adaptive contact with the wrapped outer conductor of the high-speed differential copper cable 10, solving the matching problem of different manufacturers and different specifications. The high-speed differential copper cable 10 is stripped according to the requirements of the clamp, inserted into the contact head body 11, and pressed tightly on the clamp base 6 by the pressing block 9 through the quick manual screw 8, realizing quick fixing. The high-speed differential copper cable 10 at both ends of the measured object is fixed on different clamps to realize an electromagnetic transmission loop. Through the port connection of the two-end clamps to the network analyzer VNA, all electrical performance parameters of the high-speed differential can be tested.

[0030] The differential cable test clamp can realize the test of super-high-speed 224Gbps high-speed cable, has high test precision, strong adaptability and meets the test requirements of high frequency.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A differential cable test fixture, characterized in that, Includes an RF adapter (14), a replaceable adapter (5), a clamp base (6), a quick manual screw (8), and a clamping block (9); The radio frequency adapter (14) is connected to the replaceable adapter (5), the replaceable adapter (5) is connected to one end of the clamp base (6), a high-speed differential copper cable (10) is provided on the clamp base (6), the high-speed differential copper cable (10) is clamped by the quick manual screw (8) and the pressure block (9), and one end of the high-speed differential copper cable (10) is connected to the replaceable adapter (5). The radio frequency adapter (14) includes a coaxial connector (2) and a coaxial to parallel line cavity (3); the coaxial connector (2) is connected to one side of the coaxial to parallel line cavity (3), and the other side of the coaxial to parallel line cavity (3) is connected to the replaceable adapter (5). The replaceable adapter (5) includes a contact head body (11), a parallel line medium (12), and a double-ended spring pin (4); the parallel line medium (12) is connected to the hole in the contact head body (11), the double-ended spring pin (4) is connected to the parallel line medium (12), the left end of the double-ended spring pin (4) is connected to the coaxial to parallel line cavity (3), and the right end is connected to the high-speed differential copper cable (10). The contact head body (11) has a contact slope (13) at one end near the high-speed differential copper cable (10), and the high-speed differential copper cable (10) passes through the contact slope (13) to connect to the right end of the double-headed spring pin (4).

2. The differential cable test fixture according to claim 1, characterized in that, The upper left end of the fixture base (6) is provided with a recessed platform (15), and two limiting seats (16) are connected to the bottom sides of the recessed platform (15) by fixing screws (7). The contact head body (11) is located between the two limiting seats (16).

3. The differential cable test fixture according to claim 1, characterized in that, The clamp base (6) has a groove (17) and the high-speed differential copper cable (10) is located in the groove (17).

4. The differential cable test fixture according to claim 1, characterized in that, The coaxial connector (2) and the coaxial-to-parallel cavity (3) are connected by a plurality of first fastening screws (1).

5. The differential cable test fixture according to claim 2, characterized in that, The coaxial to parallel line cavity (3) is connected to the clamp base (6) and the two limit seats (16) side walls by a plurality of second fastening screws (18).

Images