CN112611895A - Test tool - Google Patents
Test tool Download PDFInfo
- Publication number
- CN112611895A CN112611895A CN202011444806.1A CN202011444806A CN112611895A CN 112611895 A CN112611895 A CN 112611895A CN 202011444806 A CN202011444806 A CN 202011444806A CN 112611895 A CN112611895 A CN 112611895A
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- plate
- connecting plate
- connector
- slide rail
- bearing
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The embodiment of the invention provides a test tool, which comprises a bottom plate and a side plate, wherein the bottom plate is horizontally arranged, and the side plate is vertically arranged on the bottom plate; the bottom plate comprises a first slide rail arranged along the X direction, a bearing plate used for bearing a product is arranged on the first slide rail, the bearing plate can move on the first slide rail along the X direction, the bottom plate also comprises a first connecting plate arranged along the vertical direction, the plate surface of the first connecting plate faces the X direction, and the first connecting plate comprises a first plug-in connector correspondingly matched with the plug-in connector on the side part of the product; still including anchor clamps on the curb plate, the bottom of anchor clamps is configured with the second connecting plate, including on the second connecting plate with the product connect the connector to correspond the complex second connector, anchor clamps can drive the second connecting plate moves along vertical direction. The problems that the microwave assembly is unstable in test state, unreliable in test connection and low in test efficiency in the test process are solved.
Description
Technical Field
The invention relates to the technical field of microwave component testing. And more particularly, to a test fixture.
Background
With the continuous progress of radar technology, modern radars play an increasingly important role in the development of society and have increasingly broad market prospects. Modern radars represented by phased array radars contain a large number of microwave assemblies, and in order to meet the production requirements of the radars, the testing technology of the microwave assemblies becomes a hot problem of current research.
Due to the fact that different functions are achieved, parameters such as testing indexes, overall dimensions, interface forms and positions of the microwave assemblies are different, a lot of difficulties are brought to testing of the microwave assemblies, particularly clamping fixing and test point connection in the testing process of the assemblies directly affect testing convenience and testing efficiency of the whole assemblies.
Disclosure of Invention
Aiming at the problems, the invention provides a test tool to solve the problems of unstable test state, unreliable test connection and low test efficiency of a microwave assembly in the test process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a test tool, which comprises:
a horizontally disposed floor, an
A side plate vertically arranged on the bottom plate;
the bottom plate comprises a first slide rail arranged along the X direction, a bearing plate used for bearing a product is arranged on the first slide rail, the bearing plate can move on the first slide rail along the X direction, the bottom plate also comprises a first connecting plate arranged along the vertical direction, the plate surface of the first connecting plate faces the X direction, and the first connecting plate comprises a first plug-in connector correspondingly matched with the plug-in connector on the side part of the product;
still including anchor clamps on the curb plate, the bottom of anchor clamps is configured with the second connecting plate, including on the second connecting plate with the product connect the connector to correspond the complex second connector, anchor clamps can drive the second connecting plate moves along vertical direction.
In addition, preferably, the clamp comprises a main body combined and fixed with the side plate, a pull rod hinged with the top end of the main body and used for applying external force, a connecting rod with the bottom end combined and fixed with the top surface of the second connecting plate, and a connecting piece with two ends respectively hinged with the connecting rod and the pull rod;
the lower part of main part is including holding the chamber, the connecting rod is worn to locate and is held the intracavity, the connecting rod forms the kinematic pair with holding the chamber.
In addition, preferably, the pull rod comprises a handheld part and a bent part, one end of the bent part is hinged to the top end of the main body, and when the second plug connector is plugged with the plug connector on the top of the product, the bent part is abutted and fixed to the upper part of the main body.
In addition, preferably, the side plate comprises a horizontally arranged strip-shaped mounting groove penetrating through the two side surfaces of the side plate, and the main body of the clamp is fixedly combined with the mounting groove through a bolt.
Further, it is preferable that the first socket projects from a surface of the first connection plate in the X direction and faces a side direction of the product; the second plug connector protrudes from the bottom surface of the second connecting plate.
In addition, preferably, one end of the first slide rail, which is away from the side plate, comprises a slide rail limiting block for limiting the position of the bearing plate.
In addition, preferably, the tool comprises a second slide rail arranged on the side plate along the vertical direction, and an L-shaped connecting plate matched with the second slide rail; the straight portion of L type connecting plate combines fixedly with the second connecting plate, the vertical portion of L type connecting plate combines fixedly with the removal portion on the second slide rail.
In addition, preferably, the tool comprises an L-shaped fixing plate, a vertical part of the L-shaped fixing plate is fixedly combined with the first connecting plate, and a straight part of the L-shaped fixing plate is fixedly combined with the bottom plate.
In addition, preferably, the carrying plate includes a carrying portion for carrying a product and a connecting portion fixedly combined with the moving portion of the first slide rail, and a side of the carrying portion includes a handle.
The test tool has the beneficial effects that:
according to the invention, through the matching of the first connecting plate, the second connecting plate and the clamp, the first connecting plate and the second connecting plate respectively utilize the first plug connector and the second plug connector to complete the connection of the plug connectors on the products and clamp the products, so that the plug connectors at different positions on the top and the side of the products can be simultaneously connected at one time, and the connection testing efficiency is greatly improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the present invention in a self-locking state.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The microwave module aims to solve the problems that the test state of the existing microwave module is unstable in the test process, the connection of test points is unreliable and the test efficiency is low. The invention provides a test tool, which is shown in a combined figure 1 and a figure 2, and specifically comprises the following components:
a horizontally arranged base plate 1, and
a side plate 2 vertically arranged on the bottom plate 1;
the bottom plate 1 comprises a first slide rail 3 arranged along the X direction, a bearing plate 4 used for bearing a product is arranged on the first slide rail 3, the bearing plate 4 can move on the first slide rail 3 along the X direction, the bottom plate 1 further comprises a first connecting plate 5 arranged along the vertical direction, the plate surface of the first connecting plate 5 faces the X direction, and the first connecting plate 5 comprises a first plug-in connector correspondingly matched with the plug-in connector on the side part of the product;
still including anchor clamps 7 on the curb plate 2, the bottom of anchor clamps 7 is configured with second connecting plate 6, connect the connector including inserting on the top with the product on second connecting plate 6 and correspond the complex second connector, anchor clamps 7 can drive second connecting plate 6 moves along vertical direction.
According to the invention, through the matching of the first connecting plate 5 and the second connecting plate 6, the first connecting plate 5 and the second connecting plate 6 respectively utilize the first plug-in connector and the second plug-in connector to complete the connection of the plug-in connectors on the product and clamp the product, so that the plug-in connectors at different positions on the top and the side of the product can be simultaneously connected at one time, and the efficiency of connection test is greatly improved. Further, the clamp 7 is configured to abut the second connection plate 6 against the product when the second connector is plugged with the connector on the product. The test fixture further has a clamping and locking function, the test state of a product is stable, the connection is reliable, the test fixture has certain universality, and the rapid test development of the specific microwave assembly 14 can be met by replacing the first connecting plate 5 and the second connecting plate 6.
It should be noted that the test tool is directed to a specific microwave assembly having test points on the side and top surfaces. Before testing, the dedicated carrier plate 4, the first connecting plate 5 and the second connecting plate 6 are produced and replaced for a specific microwave assembly 14, and the testing tool is assembled and debugged.
In one embodiment, referring to fig. 1, the structure of the clamp 7, the clamp 7 includes a main body 71 fixed to the side plate 2, a pull rod 72 hinged to a top end of the main body 71 for applying an external force, a connecting rod 73 fixed to a top end of the second connecting plate 6, and a connecting member 74 hinged to the connecting rod 73 and the pull rod 72 at two ends thereof; the lower part of the main body 71 comprises an accommodating cavity 711, the connecting rod 73 is arranged in the accommodating cavity 711 in a penetrating way, and the connecting rod 73 and the accommodating cavity 711 form a kinematic pair. The accommodating cavity 711 is used for limiting the connecting rod 73 to move along the vertical direction, and the outer surface of the connecting rod 73 and the inner wall of the accommodating cavity 711 form a kinematic pair. The control pull rod 72 can be manually pulled, and the driving connecting piece 74 drives the connecting rod 73 to reciprocate in the vertical direction, so that the second connecting plate 6 fixed with the connecting rod 73 can reciprocate in the vertical direction, and connection with the connector at the top of the microwave assembly 14 is realized. Its advantage lies in, connecting rod 73 wears to locate and holds the chamber 711, makes connecting rod 73 along vertical direction motion and form the kinematic pair in holding chamber 711, can effectual control connecting rod 73's direction of motion play the effect of spacing direction, the better reliability that improves this test fixture.
In this embodiment, the pull rod 72 includes a handheld portion 721 and a bent portion 722 with one end hinged to the top end of the main body 71, and when the second connector is plugged into the connector on the top of the product, the bent portion 722 is fixed in abutment with the upper portion of the main body 71, and the second connecting plate 6 stops moving. As for the specific structure of the pull rod 72, specifically, the self-locking may be realized by the bent portion 722 abutting against the upper portion of the main body 71, and the position of the second connection plate 6 may be locked. The operation of moving the second connecting plate 6 in the vertical direction can be realized, and the second connecting plate 6 can not move when the pull rod 72 is continuously pressed down under the self-locking state, so that the effect of protecting the microwave assembly 14 from keeping a stable connecting state can be realized.
Referring to fig. 1, the side plate 2 includes a horizontally disposed strip-shaped mounting groove 8 penetrating through two side surfaces of the side plate 2, the main body 71 of the clamp 7 is fixed to the mounting groove 8 by a bolt, and the clamp 7 is movable in the mounting groove 8 along a slot opening direction. After the second connecting plate 6 is selected according to the microwave assembly 14, the clamp 7 moves in the mounting groove 8 along the slotting direction, the connecting position between the clamp 7 and the second connecting plate 6 is adjusted, and the proper connecting position is determined, so that the matching and testing of the second connecting plate 6 and the microwave assembly 14 can be completed more reliably.
In one embodiment, the first plug protrudes from the surface of the first connection plate 5 in the X direction and towards the side of the product; the second plug projects from the bottom surface of the second connecting plate 6. As can be understood by those skilled in the art, the first plug connector and the second plug connector are correspondingly matched with the plug connector of the product and are plugged and matched with the plug connector on the product to be tested for testing.
In addition, in order to effectively limit the position of the bearing plate 4 on the first slide rail 3 and facilitate fixing the microwave assembly 14 on the bearing plate 4, one end of the first slide rail 3 away from the side plate 2 includes a slide rail limiting block 9 for limiting the position of the bearing plate 4.
In one embodiment, the tool comprises a second slide rail 10 arranged on the side plate 2 along the vertical direction, and an L-shaped connecting plate 11 matched with the second slide rail 10; the straight portion of L type connecting plate 11 combines fixedly with second connecting plate 6, the vertical portion of L type connecting plate 11 combines fixedly with the removal portion on the second slide rail 10, second connecting plate 6 can slide along vertical direction on second slide rail 10. Through the arrangement, when the second connecting plate 6 moves along the vertical direction, the sliding part matched with the second slide rail 10 is utilized to play a role in ensuring that the second connecting plate 6 stably slides in the vertical direction by the auxiliary clamp 7, and meanwhile, the moving part and the second connecting plate 6 of the second slide rail 10 are fixed with the L-shaped connecting plate 11 through bolts respectively, so that the test tool is convenient to detach and install, and has certain universality.
In one embodiment, the tool comprises an L-shaped fixing plate 12, wherein a vertical portion of the L-shaped fixing plate 12 is fixedly combined with the first connecting plate 5, and a straight portion of the L-shaped fixing plate 12 is fixedly combined with the bottom plate 1. The test fixture has the advantages that the first connecting plate 5 is fixedly connected with the bottom plate 1 through the L-shaped fixing plate 12, the L-shaped fixing plate 12 is fixedly connected with the first connecting plate 5 and the bottom plate 1 through bolts, the test fixture is convenient to detach and install, the first connecting plate 5 is replaced more quickly, the test fixture has certain universality, and the rapid test development of the specific type of microwave assemblies 14 can be met.
Referring to fig. 1, the carrying plate 4 includes a carrying portion for carrying a product and a connecting portion fixedly coupled to the moving portion of the first slide rail 3, and a handle 13 is disposed on a side of the carrying portion. Through combining the handle 13 that is fixed in on the loading board 4 can accomplish the grafting cooperation between the connector of inserting on first connector and the product lateral part through promoting handle 13, can insert the connector separation on first connector and the product lateral part through handle 13 after the test is accomplished, simple and convenient improves efficiency of software testing.
In a specific implementation process, referring to fig. 1 and 2, the bottom plate 1 and the first guide rail, and the side plate 2 and the second guide rail are all connected and fastened with each other through bolts to form a fixed rack of the test fixture. The second connecting plate 6 is combined and fixed on a clamp 7, the clamp 7 is installed on the side plate 2, and the positions of the clamp 7 and the second connecting plate 6 are adjusted and fixed according to a microwave assembly 14 to be measured. The second connecting plate 6 is matched with the second guide rail through an L-shaped connecting plate 11 and can slide up and down along the second guide rail. And corresponding connectors are arranged on the first connecting plate 5 and the second connecting plate 6 respectively and are used for being connected with the connectors on the microwave assembly 14 to finish the test. The bearing plate 4 is arranged on the first guide rail and can slide on the first guide rail along the X direction, and a handle 13 is designed on the bearing part of the bearing plate 4, so that the operation of a tester is facilitated.
During testing, the microwave assembly 14 is placed on the bearing plate 4 and fixed, the handle 13 on the bearing plate 4 is pushed, and the connector at the side of the microwave assembly 14 is connected with the connector on the first connection plate 5, and it can be understood by those skilled in the art that the first connector and the second connector can be devices such as a test probe or a radio frequency connector which can connect the connector on the microwave assembly 14, and the connector at the side of the microwave assembly 14 is connected with the first connector on the first connection plate 5. Pulling the pull rod 72 on the clamp 7, the second connecting plate 6 slides downwards along with the clamp 7 and the second slide rail 10, and the connector on the top surface of the microwave assembly 14 is connected with the second connector on the second connecting plate 6. At the moment, the clamp 7 is in a self-locking state, the microwave assembly 14 is clamped and fastened, reliable connection is completed, and then the test work of the microwave assembly 14 can be started.
After the test is finished, the pull rod 72 of the clamp 7 is firstly pulled to separate the second connecting plate 6 from the microwave assembly 14, and then the handle 13 on the bearing plate 4 is pulled to separate the microwave assembly 14 from the first connecting plate 5.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (9)
1. The utility model provides a test fixture which characterized in that includes:
a horizontally disposed floor, an
A side plate vertically arranged on the bottom plate;
the bottom plate comprises a first slide rail arranged along the X direction, a bearing plate used for bearing a product is arranged on the first slide rail, the bearing plate can move on the first slide rail along the X direction, the bottom plate also comprises a first connecting plate arranged along the vertical direction, the plate surface of the first connecting plate faces the X direction, and the first connecting plate comprises a first plug-in connector correspondingly matched with the plug-in connector on the side part of the product;
still including anchor clamps on the curb plate, the bottom of anchor clamps is configured with the second connecting plate, including on the second connecting plate with the product connect the connector to correspond the complex second connector, anchor clamps can drive the second connecting plate moves along vertical direction.
2. The test tool according to claim 1, wherein the clamp comprises a main body fixedly combined with the side plate, a pull rod hinged to the top end of the main body and used for applying an external force, a connecting rod fixedly combined with the bottom end of the second connecting plate, and a connecting piece, wherein two ends of the connecting piece are respectively hinged to the connecting rod and the pull rod;
the lower part of main part is including holding the chamber, the connecting rod is worn to locate and is held the intracavity, the connecting rod forms the kinematic pair with holding the chamber.
3. The test fixture of claim 2, wherein the pull rod comprises a handheld portion and a bent portion, one end of the bent portion is hinged to the top end of the main body, and when the second connector is connected with the connector on the top of the product in an inserting mode, the bent portion is fixedly abutted to the upper portion of the main body.
4. The test tool according to claim 1, wherein the side plate comprises horizontally arranged elongated mounting grooves extending through two side surfaces of the side plate, and the main body of the clamp is fixed to the mounting grooves by bolts.
5. The test fixture of claim 1, wherein the first socket protrudes from a surface of the first connection plate in an X-direction and is directed toward a side of the product; the second plug connector protrudes from the bottom surface of the second connecting plate.
6. The test tool according to claim 1, wherein one end of the first slide rail, which is away from the side plate, comprises a slide rail limiting block for limiting the position of the bearing plate.
7. The test tool according to claim 1, wherein the tool comprises a second slide rail arranged on the side plate in the vertical direction, and an L-shaped connecting plate matched with the second slide rail; the straight portion of L type connecting plate combines fixedly with the second connecting plate, the vertical portion of L type connecting plate combines fixedly with the removal portion on the second slide rail.
8. The test fixture according to claim 1, wherein the fixture comprises an L-shaped fixing plate, a vertical portion of the L-shaped fixing plate is fixedly combined with the first connecting plate, and a straight portion of the L-shaped fixing plate is fixedly combined with the bottom plate.
9. The test tool of claim 1, wherein the bearing plate comprises a bearing portion for bearing a product and a connecting portion fixedly combined with the moving portion of the first slide rail, and a handle is arranged on a side surface of the bearing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444806.1A CN112611895A (en) | 2020-12-11 | 2020-12-11 | Test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444806.1A CN112611895A (en) | 2020-12-11 | 2020-12-11 | Test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112611895A true CN112611895A (en) | 2021-04-06 |
Family
ID=75232862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011444806.1A Pending CN112611895A (en) | 2020-12-11 | 2020-12-11 | Test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112611895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447897A (en) * | 2021-06-15 | 2021-09-28 | 北京无线电测量研究所 | Test tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030175098A1 (en) * | 2002-03-15 | 2003-09-18 | Seagate Technology Llc | In-circuit test fixture loader |
| CN102841277A (en) * | 2012-08-29 | 2012-12-26 | 宝电电子(张家港)有限公司 | Test assembly for transformers |
| CN105716855A (en) * | 2016-04-21 | 2016-06-29 | 广州维思车用部件有限公司 | Key-dialing switch testing device and testing method thereof |
| CN207180736U (en) * | 2017-09-29 | 2018-04-03 | 福州汇思博信息技术有限公司 | A kind of automatic test scanning frock |
| CN209311628U (en) * | 2018-11-15 | 2019-08-27 | 湖北三江航天险峰电子信息有限公司 | A kind of microwave circuit board checking device |
-
2020
- 2020-12-11 CN CN202011444806.1A patent/CN112611895A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030175098A1 (en) * | 2002-03-15 | 2003-09-18 | Seagate Technology Llc | In-circuit test fixture loader |
| CN102841277A (en) * | 2012-08-29 | 2012-12-26 | 宝电电子(张家港)有限公司 | Test assembly for transformers |
| CN105716855A (en) * | 2016-04-21 | 2016-06-29 | 广州维思车用部件有限公司 | Key-dialing switch testing device and testing method thereof |
| CN207180736U (en) * | 2017-09-29 | 2018-04-03 | 福州汇思博信息技术有限公司 | A kind of automatic test scanning frock |
| CN209311628U (en) * | 2018-11-15 | 2019-08-27 | 湖北三江航天险峰电子信息有限公司 | A kind of microwave circuit board checking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447897A (en) * | 2021-06-15 | 2021-09-28 | 北京无线电测量研究所 | Test tool |
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Application publication date: 20210406 |