阅读说明：本技术 一种可拆卸模块式vpx信号的测试夹具 (Test fixture for detachable modular VPX signal ) 是由 韩文静 金旸霖 张蕾 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种可拆卸模块式VPX信号的测试夹具,包括前插入模块及后导出模块；本发明的后导出模块与子板外形相同并设置了背板连接器,采用在前插入模块置入不同功能的单端、差分、微波或电源VPX连接器,将前插入模块的滑轨与后导出模块的插槽插合,实现VPX连接器与背板连接器电连接。将本发明后导出模块插入VPX机箱,实现后导出模块的背板连接器与VPX机箱的背板电连接,通过VPX连接器将信号引出到测试仪器,即可实现对机箱内背板与子板之间或子板之间连接的信号特征进行检测。本发明通过在前插入模块置入单端、差分、微波或电源等不同功能的VPX连接器,即可实现对VPX机箱完成多项功能的测试。(The invention discloses a test fixture for a detachable modular VPX signal, which comprises a front insertion module and a rear derivation module; the rear lead-out module and the daughter board have the same shape and are provided with the backplane connector, and the VPX connector is electrically connected with the backplane connector by inserting single-ended, differential, microwave or power supply VPX connectors with different functions into the front plug-in module and inserting the slide rail of the front plug-in module into the slot of the rear lead-out module. The back lead-out module is inserted into the VPX case to realize that a back plate connector of the back lead-out module is electrically connected with a back plate of the VPX case, and a signal is led out to a test instrument through the VPX connector, so that the detection of the signal characteristics connected between the back plate and the daughter board or between the daughter boards in the case can be realized. The VPX connector with different functions such as single end, difference, microwave or power supply and the like is arranged in the front insertion module, so that the test of multiple functions of the VPX case can be completed.)

1. A test fixture for detachable modular VPX signals is characterized by comprising a front plug-in module (1) and a rear lead-out module (2);

the front insert module (1) is rectangular plate-shaped, a VPX connector (11) is arranged on the surface of the front insert module, slide rails (14) are arranged on two side edges of the rectangular plate, a puller (12) is arranged at the upper end of each of the two side edges of the rectangular plate, and a guide hole (13) is arranged at the lower end of each of the two side edges;

the shape of the rear lead-out module (2) is the same as that of a daughter board of the case, a backboard connector (22) is arranged on the board surface, slots are arranged on two side edges of the daughter board, a pull-up opening (21) is arranged at the upper end of each side edge of the daughter board, and guide posts are arranged at the lower ends of the two side edges;

slide rail (14) of preceding insert module (1) are inserted with the slot of back derivation module (2) and are closed, and the pull-out ware (12) of preceding insert module (1) and the pull-out mouth (21) joint of back derivation module (2), and guiding hole (13) of preceding insert module (1) and the guide post meshing of back derivation module (2), and preceding insert VPX connector (11) of module (1) are connected with the back panel connector (22) electricity of back derivation module (2).

2. A test fixture for detachable modular VPX signals according to claim 1, characterized in that the VPX connector (11) is divided into single ended, differential, microwave or power connectors.

Technical Field

The invention relates to the technical field of computers, in particular to an external device for testing and debugging a digital signal of a VPX case, and particularly relates to a detachable modular VPX signal testing clamp.

Background

The VPX case has the functions of high-speed data acquisition, real-time signal processing and wide and large-capacity storage, has the characteristics of firm volume, interference resistance and vibration resistance, and is increasingly used in the field of information communication. Because the VPX case adopts the interior to be connected by each daughter board and the back board to finish the transmission and processing of each signal, in order to judge the characteristics of the connection signal between the back board and the daughter board, a test fixture is needed to be configured. The test fixture for testing the VPX signal in the prior art is a single customized printed board, and has the problems that a user needs to detach a back board or a daughter board module from a VPX case for testing during testing, so that the assembly and disassembly are troublesome, the performance of the test fixture is simplified, the test range is limited, all test points cannot be contained, the test fixture for customizing different signal points according to different users is needed, and the test efficiency is low and the cost is high.

Disclosure of Invention

The invention aims to provide a detachable modular VPX signal test fixture aiming at the defects of the prior art, which consists of a front insertion module and a rear lead-out module, wherein the rear lead-out module is the same as the daughter board of a case in shape, a backplane connector is arranged on the rear lead-out module, a single-ended, differential, microwave or power supply VPX connector with different functions is arranged in the front insertion module, a slide rail of the front insertion module is inserted into a slot of the rear lead-out module, and the VPX connector is electrically connected with the backplane connector. The rear lead-out module is inserted into the VPX case, so that the backplane connector of the rear lead-out module is electrically connected with the backplane of the VPX case, and a signal is led out to a test instrument through the VPX connector, so that the detection of the signal characteristics connected between the backplane and the daughter boards in the case and the detection of the signal characteristics connected between the daughter boards in the case can be realized.

The invention sets a detachable structure of the pulling device and the pulling port between the front plug-in module and the rear lead-out module, can implement separation at any time, and can realize the test of multiple functions of the VPX case by embedding single-ended, differential, microwave or power supply and other VPX connectors with different functions in the front plug-in module.

The specific technical scheme for realizing the purpose of the invention is as follows:

a test fixture for a detachable modular VPX signal is characterized by comprising a front insertion module and a rear derivation module;

the front insertion module is in a rectangular plate shape, a VPX connector is arranged on the surface of the front insertion module, slide rails are arranged on two side edges of the rectangular plate, a puller is arranged at the upper end of each of the two side edges of the rectangular plate, and a guide hole is arranged at the lower end of each of the two side edges;

the shape of the rear lead-out module is the same as that of a daughter board of the case, a backplane connector is arranged on the board surface of the rear lead-out module, slots are arranged on two side edges of the daughter board, a pull-up opening is arranged at the upper end of each side edge of the daughter board, and guide posts are arranged at the lower ends of the two side edges.

The slide rail of preceding inserted module is inserted with the slot of back derivation module and is closed, and the pull-out ware of preceding inserted module and the pull-out mouth joint of back derivation module, the guiding hole of preceding inserted module and the guide post meshing of back derivation module, the VPX connector of preceding inserted module and the back board connector electricity of back derivation module are connected.

The VPX connector is divided into a single-ended, differential, microwave or power connector.

The invention is composed of a front plug-in module and a rear lead-out module, the rear lead-out module is the same as the daughter board of a case in shape, a backplane connector is arranged on the rear lead-out module, a single-end, differential, microwave or power supply VPX connector with different functions is arranged in the front plug-in module, a slide rail of the front plug-in module is plugged with a slot of the rear lead-out module, and the VPX connector is electrically connected with the backplane connector. The rear lead-out module is inserted into the VPX case, so that the backplane connector of the rear lead-out module is electrically connected with the backplane of the VPX case, and a signal is led out to a test instrument through the VPX connector, so that the detection of the signal characteristics connected between the backplane and the daughter boards in the case and the detection of the signal characteristics connected between the daughter boards in the case can be realized.

The invention sets a detachable structure of the pulling device and the pulling port between the front plug-in module and the rear lead-out module, can implement separation at any time, and can realize the test of multiple functions of the VPX case by embedding single-ended, differential, microwave or power supply and other VPX connectors with different functions in the front plug-in module.

The invention can realize the separation test or the joint debugging test, complete the free disassembly and assembly on the structure, become a multifunctional test board, has flexible and convenient test and strong universality, meets various requirements of different users, and greatly improves the test reliability and the test efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a front insert module according to the present invention;

fig. 3 is a schematic view of the usage state of the present invention.

Detailed Description

Referring to fig. 1 and 2, the present invention includes a front insertion module 1 and a rear lead-out module 2;

the front insertion module 1 is in a rectangular plate shape, a VPX connector 11 is arranged on the surface of the front insertion module, slide rails 14 are arranged on two side edges of the rectangular plate, a puller 12 is arranged at the upper end of each of the two side edges of the rectangular plate, and a guide hole 13 is arranged at the lower end of each of the two side edges;

the shape of the rear lead-out module 2 is the same as that of a daughter board of the case, a backplane connector 22 is arranged on the surface of the rear lead-out module, slots are arranged on two side edges of the daughter board, a pull-up opening 21 is arranged at the upper end of each of the two side edges of the daughter board, and guide posts are arranged at the lower ends of the two side edges;

the slide rail 14 of the front insertion module 1 is inserted into the slot of the rear lead-out module 2, the puller 12 of the front insertion module 1 is clamped with the puller opening 21 of the rear lead-out module 2, the guide hole 13 of the front insertion module 1 is meshed with the guide post of the rear lead-out module 2, and the VPX connector 11 of the front insertion module 1 is electrically connected with the backplane connector 22 of the rear lead-out module 2.

Referring to fig. 1, the VPX connector 11 is a single-ended, differential, microwave or power connector.

The invention works as follows:

the invention is used for detecting the VPX case, detecting the signal characteristics connected between the back plate and the daughter board in the case and detecting the signal characteristics connected between the daughter boards in the case.

Referring to fig. 1 and 2, the detection process of the present invention is as follows: according to the detection requirement, a single-ended, differential, microwave or power supply VPX connector 11 is arranged in a front insertion module 1, a slide rail 14 of the front insertion module 1 is inserted into a slot of a rear lead-out module 2, when the front insertion module 1 is inserted in place, a pulling-out device 12 of the front insertion module 1 is automatically clamped with a pulling-out opening 21 of the rear lead-out module 2, a guide hole 13 of the front insertion module 1 is automatically meshed with a guide post of the rear lead-out module 2, and the VPX connector 11 of the front insertion module 1 is electrically connected with a backplane connector 22 of the rear lead-out module 2.

Referring to fig. 1, 2 and 3, the back lead-out module 2 of the present invention is inserted into the VPX chassis, and because the present invention adopts the same shape as the daughter board of the chassis as the housing of the back lead-out module 2, the insertion of the back lead-out module 2 and the VPX chassis is equivalent to the insertion of the daughter board and the VPX chassis, and meanwhile, the backplane connector 22 of the back lead-out module 2 of the present invention is electrically connected with the backplane of the VPX chassis, and the signal is led out to the testing instrument through the VPX connector 11 to complete various performance tests.

The test joint debugging of different functions is correspondingly completed according to different functions of the single-ended, differential, microwave or power supply VPX connector 11 of the plug-in module 1 before being embedded.

After the test is finished, the test device is only required to be pulled out of the VPX case, and the VPX case does not need to be disassembled in the whole test process. The invention has the functions of high-speed data acquisition, real-time signal processing and wide and large-capacity storage, and has the characteristics of interference resistance and vibration resistance.

Referring to fig. 1 and 2, the detachable structure of the extractor 12 and the extraction opening 21 is arranged between the front insertion module 1 and the rear lead-out module 2, so that the front insertion module 1 and the rear lead-out module 2 can be separated at any time, and the VPX chassis can be tested in multiple functions by inserting different VPX connectors 11 such as single end, difference, microwave or power supply into the front insertion module 1.