CN105699879B - A kind of frequency PCB board test connection slide glass - Google Patents
A kind of frequency PCB board test connection slide glass Download PDFInfo
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- CN105699879B CN105699879B CN201610130486.XA CN201610130486A CN105699879B CN 105699879 B CN105699879 B CN 105699879B CN 201610130486 A CN201610130486 A CN 201610130486A CN 105699879 B CN105699879 B CN 105699879B
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- plate
- pcb board
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- strip plate
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
- G01R31/2808—Holding, conveying or contacting devices, e.g. test adapters, edge connectors, extender boards
Abstract
The invention belongs to the test of pcb board and detection fields, and in particular to a kind of frequency PCB board test connection slide glass.This connection slide glass includes plate；Micro-strip plate is fixed in one side end face of the direction pcb board to be measured of plate, and another side surface of micro-strip plate is towards at pcb board to be measured, and the surface of the direction pcb board to be measured of micro-strip plate is guide card stationary plane, and the impedance of micro-strip plate is equal to pcb board impedance to be measured；With metal clips by above-mentioned lower pressure and/climbing power and flatten in it is planar when, for the working condition of the connection slide glass；Under above-mentioned working condition, the surface face paste towards micro-strip plate of metal clips is together in the guide card stationary plane of micro-strip plate, and face paste closes the leading point that the test point on pcb board to be measured draws plate with signal simultaneously on the surface of the direction pcb board to be measured of metal clips.This connection slide glass has the advantages such as test accuracy is high, standing-wave ratio is good, isolation is good, it is big to bear power, power attenuation is low, and performance is stable and reliable.
Description
Technical field
The invention belongs to the test of pcb board and detection fields, and in particular to a kind of frequency PCB board test connection slide glass.
Background technology
Pcb board is the abbreviation of printed circuit board, is also card, is the critical piece of most of electronic products.All
Electronic product is before manufacture, or even during use after manufacture, all along with a series of performance test, to find in advance and
Debugging, and then ensure product quality, pcb board is even more so.In the test platform for pcb board especially frequency PCB plate
In, rf probe test mode is the most universal；This is in the patent name that such as Chinese patent notification number is " CN102221376A "
The patent of invention text and Chinese patent notification number of " a kind of pcb board test fixture " are the proprietary term of " CN 102707182A "
Referred to as it is described in the patent of invention text of " a kind of pcb board measurement jig "：Including can be movable toward each other upper and lower
Mould arranges that needle plate, needle plate are arranged with rf probe array at least one of the forward surface of upper and lower mould.When work,
With the test point on the tip alignment of rf probe pcb board to be tested, to play external boundary's tester with rf probe ontology
The signal of device draws purpose.However, with the rapid development of social science and technology, the miniaturization of pcb board and it is integrated be trend of the times,
The pcb board for having huge intensive test point can be found everywhere.Traditional rf probe inherently has certain diameter, some are even
Arrange the fixed structures such as flange in end, since above-mentioned rf probe can not carry out structure unification, how quickly to seek to
The particular radio-frequency probe of pcb board impedance matching to be measured becomes problem, and standing-wave ratio is too low when often causing to test because selecting reluctantly,
Test accuracy is affected therewith.Similarly, since the densification of test point, when the survey of two adjacent radio frequencies of pcb board to be measured
When pilot spacing is closer, test request cannot be satisfied totally between common rf probe and test fixture, this can cause
Test data is unreliable；Or rf probe interference phenomenon occurs since adjacent test point distance is too close, and then cause to occur
The situation of rf probe can not be installed.In addition, conventional rf probe can not also be fitted at all due to itself simple material-structure
The occasion larger for the tested port power of frequency PCB plate.Finally, the technology of high-frequency radio frequency probe is usually external monopolization,
Procurement cycle is long and expensive, it is clear that the requirements such as product development cycle and the cost control of current producer are also cannot be satisfied,
This also produces certain influence to the actual test of frequency PCB plate.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of frequency PCB reasonable for structure and reliable
Board test connection slide glass.This connection slide glass is mountable in current routine test platform, and is had test accuracy height, stayed
The series of advantages such as Bobbi is good, isolation is good, it is big to bear power, power attenuation is low, performance are stable and reliable.
To achieve the above object, present invention employs following technical schemes：
A kind of frequency PCB board test connection slide glass, it is characterised in that：This connection slide glass includes at least and is securable to PCB
The upper mold of test platform and/or the plate in lower die；One side end face of the direction pcb board to be measured of plate is fixed with for be measured
Make the impedance interconnecting piece that signal draws bridge between pcb board and signal end tab；The impedance interconnecting piece includes micro-strip plate, micro-strip
One side surface of plate is fixed on the above-mentioned end face of plate and another side surface is towards at pcb board to be measured, the direction pcb board to be measured of micro-strip plate
Surface be guide card stationary plane, the impedance of micro-strip plate is equal to pcb board impedance to be measured；Impedance interconnecting piece further includes being located in micro-strip plate
Wavy metal clips between pcb board to be measured；Impedance interconnecting piece affixed therewith is driven to generate pushing jointly with plate
And/or vertical motion, metal clips oppress pcb board to be measured and signal end tab and be pressurized flattening in it is planar when, for the connection
The working condition of slide glass；Under above-mentioned working condition, flattening is bonded in the surface towards micro-strip plate of planar metal clips
In the guide card stationary plane of micro-strip plate, and face paste closes the survey on pcb board to be measured simultaneously on the surface of the direction pcb board to be measured of metal clips
Pilot draws the leading point of plate with signal.
Plate shape in a rectangular parallelepiped shape, and the cunning as upper mold for being plugged in PCB test platforms of its length direction vertical
On rail；Micro-strip plate upper table facial contour is in the rectangle coincideing with plate lower end facial contour, micro-strip plate upper surface cloth along its length
Set there are two mounting hole, mounting hole vertical to from bottom to top at micro-strip plate plate face and recessed plate lower face；Metal
Shrapnel shape rolls over downwards the inverted " V " shape stuck up in both ends, and the stage casing of metal clips is welded at micro-strip plate lower surface；Two installations
Elastic insulated pad post is filled in hole, which protrudes micro-strip plate lower surface and bear against two in metal clips
A folding is stuck up at section.
The mounting hole vertical to run through plate plate body；Mounting hole shape in plate is presented under sector hole diameter is more than
The two-period form shoulder hole structure of sector hole diameter, elastic insulated pad post shape are in the ladder shaft-like being adapted to above-mentioned shoulder hole structure；
Columned compression bar of the filling arrangement for pushing against elastic insulated pad post in the mounting hole of the top of elastic insulated pad post；It inserts
The upper surface of plate is disposed with the jacking block for pushing against compression bar, constitutes the affixed cooperation of screw thread between the two.
The mounting hole continues recessed to form counter bore structure at jacking block along the bottom face of jacking block；The top end face of jacking block
Center vertical through setting screw mounting hole, trip bolt vertical to from top to bottom pass through screw mounting hole and on plate
The affixed cooperation of screw thread is constituted between surface.
It has been symmetrically extended fixed ear at both sides where the upper surface of plate, vertical is provided through in two fixed ears
To pilot hole, guide rod from top to bottom pass through the pilot hole to be screwed on above-mentioned sliding rail；Cloth at the shaft of guide rod
Compressed spring is set, the upper end of compressed spring is resisted against at the top nut of guide rod and lower end is resisted against the upper surface of fixed ear
Place.
The impedance of the micro-strip plate is 50 Ω.
The beneficial effects of the present invention are：
1), it is different from the rf probe structure that necessarily uses of tradition, the present invention has plane and wavy with unique
The metal clips of two kinds of deformed states, cooperation only when metal clips deforms upon and flattens can therewith face paste close micro-strip
Plate, to realize under the matching impedance between pcb board and the signal end tab to be measured being arranged side by side being located at below metal clips
Signal conduction and transmission test purpose.It is cumbersome and unsuitable high-power with such as being used caused by traditional probe in detecting mode
Pcb board test operation under situation is compared：The present invention is needed based on realization without the high-accuracy PCB on-line testing under the premise of probe
It asks, takes full advantage of high deformation behavior and high resiliency caused by metal clips own resilient.In the respective mode of PCB test platforms
It under tool drives, metal clips or replys wavy to separate pcb board to be measured and micro-strip plate, and separates signal end tab and micro-
Band plate.Or due to corresponding upper and lower molding pressure be in flatten shape, it is finally connected to pcb board, micro-strip plate and signal end tab to be measured completely.
The elastic buffer of of metal clips itself also ensures under the protection for fragile pcb board.Its flexible movements, response is fast, surveys
The accuracy of examination is high, is more suitable for the testing requirement of high-frequency high-power pcb board.
It is worth noting that just now just frequently as connection bridge beam when metal clips should be at complete flat, and connect
Lead to the leading point of the test point and signal end tab of pcb board to be measured.On the one hand, only metal clips be bonded completely micro-strip plate or
It says when being guide card thereon, in the state that entire " bridge " is just in consistent with pcb board impedance to be measured；And only impedance matching
In the state of, subsequent test data is just significant.On the other hand, metal clips is completely spread out fitting micro-strip plate, this kind of premise
Realization method compared with " part " metal clips fitting can test for, it is clear that operate more convenient.When specific operation,
Only this connection slide glass need to be maximumlly tightly pressed against at pcb board and signal end tab to be measured can, it can be achieved that property is obviously stronger,
Also it is more suitable for industrialized design and producing.
To sum up, the present invention can be individually fixed on pcb board test platform, have at low cost, easy to process, assembly period
The series of advantages such as short, versatility is high, test works well, replacement easy to repair, can effectively meet current pcb board test, especially
It is filled with the blank testing of current high-frequency high-power pcb board, and performance is stable and reliable.
2), under the mold drive actions of pcb board test platform, the present invention is using plate as main body, on the one hand along plate
Fixed ear is arranged in both sides, effective affixed between the present invention and current PC B board test platforms to realize；On the other hand, vertical to
The mounting hole being arranged in plate, the metal clips for inverted " V " shape of arranging in pairs or groups, the precompressed of optimization realized for the metal clips
Holding effect of trying hard to keep fruit, to facilitate the elasticity flattening effect under the precompressed reset and working condition of metal clips at nominal conditions.
By above structure, the present invention not only further meets frequency PCB testing requirement high-power, under high current；Simultaneously,
Using fixed ear and mounting hole the two resiliency in position, four points of two elastic insulated pad posts of arranging in pairs or groups and two compressed springs
Elasticity design, so as to by it is point-by-point freely adjust with the natural supplement of each point elastic force, avoid metal clips connection PCB to be measured
The problems such as pressure caused by institute is possible when plate and signal end tab is uneven and insufficient contact, to better meet above-mentioned survey
Examination requires.
3), elastic insulated pad post provides the precompression of metal clips in normal state, and one side is by compression bar
Against elastic insulated pad post, to ensure that elasticity pressure effect of the elastic insulated pad post between metal clips and compression bar；
On the other hand, elastic insulated pad post itself is used as insulator, also ensures the electric current letter that the test point by pcb board to be measured is sent out
Number, it is unlikely to directly to be dissipated at the plate of metal along elastic insulated pad post, and then influence the accuracy of actual test data.
When installation, by elastic insulated pad post is first placed into along mounting hole, compression bar compression is placed into, then compression bar is compressed by jacking block
Mode, you can complete above-mentioned installation operation, operation is obviously extremely convenient, and effective guarantor also can be obtained in functional reliability and stability
Card.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the Facad structure figure of the present invention；
Fig. 3 is the structure sectional view of Fig. 2；
Fig. 4 is the operating diagram when present invention is in normal condition in original state namely metal clips；
Fig. 5 is the parts the I partial enlarged view of Fig. 4；
Fig. 6 is work signal when in contact Pre strained state namely metal clips compressive deformation process occurs for the present invention
Figure；
Fig. 7 is the parts the II partial enlarged view of Fig. 6；
Fig. 8 is operating diagram when the complete stress of in running order namely metal clips of the invention flattens；
Fig. 9 is the parts the III partial enlarged view of Fig. 8.
Each label and the names of the parts correspondence of the present invention are as follows in attached drawing：
A- pcb board b- signal end tabs to be measured
A- sliding rail B- testing bases
10- plate 11- fixed ear 21- micro-strip plate 22- metal clips
The elastic insulated pad post 40- compression bars of 30-
50- jacking block 60- trip bolts
70- guide rod 80- compressed springs
Specific implementation mode
For ease of understanding, following retouch is made to the specific implementation structure and workflow of the utility model here in connection with attached drawing
It states：
The concrete structure of the present invention, as shown in Figs. 1-3 comprising two bands of compressed spring 80, one of guide rod 70, two
There is the elastic insulated pad of the compression bar 40, two of trip bolt 60, two of jacking block 50, one of plate 10, one of symmetrical fixed ear 11
Column 30, a Block- matching to 50 Ω impedances 21, one pieces of micro-strip plate be in the rectangular metal clips 22 of " V " shape.When assembling, with
Based on plate 10, elastic insulated pad post 30 and compression bar 40 are inserted in the mounting hole first in it successively, and by fastening spiral shell
Jacking block 50 is sleeved at the top revealed section of compression bar 40 by nail 60, to compress compression bar 40.At this time due to the pressure of jacking block 50 and compression bar 40
Compel effect, elastic insulated pad post 30 is extruded, while the bottom part of elastic insulated pad post 30 exposes the lower surface of micro-strip plate 21.
Micro-strip plate 21 is welded on 10 lower face of plate, and the welding metal shrapnel 22 again at the lower surface of micro-strip plate 21, and makes metal elastic
The downward folding in the both ends of piece 22 sticks up section and bears against at the exposed junction of above-mentioned elastic insulated pad post 30.The shape of metal clips 22
It can be direct " V " word structure, also contemplate in the both ends of " V " word extension turnup structure or rounding off knot reversely with each other again
Structure, as shown in Figures 1 and 3, in order to when touching pcb board a and signal the end tab b to be measured of lower section so that the contact of the two
Action is more smooth.Wear guide rod in two fixed ears of plate 10 successively from top to bottom, guide rod is the spiral shell that there is nut on top
Pin structure.It is arranged compressed spring 80 on guide rod 70, and the both ends of compressed spring 80 are born against at the nut of guide rod 70
At the upper surface of fixed ear 11, so that each forms integral spring construction.
Actual mechanical process of the present invention is as follows：
1) it, checks pcb board test platform, and pcb board a to be measured and signal end tab b is arranged in parallel at pcb board successively and surveyed
On the testing base B for trying platform.
2), the guide rod 70 of the present invention is screwed at the sliding rail A of pcb board test platform so that plate 10 is by upper
The hole reserved on sliding rail A under and.By sliding rail A be fixed on above-mentioned testing base B top and with the power drive portion of platform
Connection.Metal clips 22 is located just at the surface of pcb board a and signal end tab b to be measured at this time.This state namely Fig. 4-5 institutes
The Pre strained state shown, at this time metal clips 22 only compressed power slightly by elastic insulated pad post 30 and compression bar 40, so as to
Keep normal " V " shape structure.
3), when entire sliding rail A is moved down by the power in above-mentioned power drive portion, under 22 gradual stress of metal clips
Row, two of metal clips 22 foldings stick up section and touch the upper surface of pcb board a and signal end tab b to be measured respectively first, and start by
To the two feedback force, and then generate deformation.At this point, under optimized situation, also only metal clips 22 be connected it is to be measured
Pcb board a and signal end tab b, this state are contact Pre strained state, as shown in fig. 6-7.Under the state, since micro-strip plate 21 does not have
There is participation turn on process, therefore only mismatch the impedance of pcb board a to be measured completely with the impedance of metal clips 22, therefore does not survey
Calculate meaning.
4), sliding rail A is continued traveling downwardly, and metal clips 22 continues stress, until being in complete flat.At this point, not only elastic
Insulation padding pole 30 via forced compression shown in slight stress to Fig. 8-9 as shown in fig. 6-7 to extreme position, meanwhile, guide rod
Compressed spring 80 on 70 is also stretched to the preset limit and replys position.In the huge of compressed spring 80 and elastic insulated pad post 30
It replys under force effect, metal clips 22 is completely fitted at the guide card stationary plane on micro-strip plate 21, this state reaches satisfaction
It is required that conducting state, also as working condition shown in Fig. 8-9.Under the state, 50 Ω impedances of micro-strip plate 21 itself are just
The 50 Ω impedances of pcb board a to be measured are matched to, the transition transmission of circuit turn-on, radiofrequency signal is achieved, and has test meaning
Justice can carry out a series of follow-up tests.
In summary, advantage of the invention is that：
1), present invention design overlaps transmission structure using spring-piece type, can meet high-power, high current frequency PCB test
Demand.
2), the present invention devises the micro-strip plate of 50 Ω impedance matchings, well ensure that transmission performance, with test device and instrument
Table test system impedance reaches good matching；The test of the pcb board of small pitch pad is realized simultaneously, while being also high-volume
Reliable continuous must test of pcb board provide powerful guarantee.
3), the present invention coordinates four point elasticities of elastic insulated pad post to design using compressed spring, can be pressed by adjusting adjustment
Pole length even adjusts elastic insulated pad post length, and two foldings to change the metal clips under original state stick up what section was subject to
Compress power, to avoid metal clips when connecting pcb board to be measured and signal end tab, institute may caused by pressure it is uneven and
The problems such as insufficient contact, to preferably meet test request.
4), initial designs thinking of the invention, you can be individually fixed on PCB test platforms, to have it is at low cost,
It easy to process, the advantages that assembly period is short, versatility is higher, test works well, replacement easy to repair, disclosure satisfy that most of
Pcb board testing requirement.Simultaneously as the uniqueness of structure of the invention, is allowed to be provided simultaneously with test accuracy height, standing-wave ratio
Advantages, the working performances such as well, isolation is good, it is big to bear power, power attenuation is low are extremely reliable and stable.
Claims (6)
1. a kind of frequency PCB board test connection slide glass, it is characterised in that：This connection slide glass, which includes at least, is securable to PCB surveys
The upper mold for trying platform and/or the plate (10) in lower die；One side end face of the direction pcb board to be measured of plate (10), which is fixed with, to be used for
Make the impedance interconnecting piece that signal draws bridge between pcb board to be measured and signal end tab；The impedance interconnecting piece includes micro-strip
Plate (21), plate (10) above-mentioned end face is fixed in (21) one side surface of micro-strip plate and another side surface is towards at pcb board to be measured, micro-
The surface of the direction pcb board to be measured of band plate (21) is guide card stationary plane, and the impedance of micro-strip plate (21) is equal to pcb board impedance to be measured；
Impedance interconnecting piece further includes the wavy metal clips (22) being located between micro-strip plate (21) and pcb board to be measured；With plate
(10) impedance interconnecting piece affixed therewith is driven to generate pushing and/or vertical motion jointly, metal clips (22) oppresses PCB to be measured
Plate and signal end tab and be pressurized flattening in it is planar when, for the working condition of the connection slide glass；Under above-mentioned working condition, exhibition
The flat surface towards micro-strip plate (21) in planar metal clips (22) fits in the guide card stationary plane of micro-strip plate (21), and
Face paste closes test point and signal extraction plate on pcb board to be measured simultaneously on the surface of the direction pcb board to be measured of metal clips (22)
Leading point.
2. a kind of frequency PCB board test according to claim 1 connection slide glass, it is characterised in that：Plate (10) shape
In a rectangular parallelepiped shape, and its length direction vertical is plugged on the sliding rail as upper mold of PCB test platforms；On micro-strip plate (21)
Surface topography is in the rectangle coincideing with plate (10) lower end facial contour, and micro-strip plate upper surface arranges that there are two peaces along its length
Fill hole, mounting hole vertical to from bottom to top at micro-strip plate (21) plate face and recessed plate (10) lower face；Metal elastic
Piece (22) shape rolls over downwards the inverted " V " shape stuck up in both ends, and the stage casing of metal clips (22) is welded in micro-strip plate (21) lower surface
Place；Elastic insulated pad post (30) is filled in two mounting holes, which protrudes micro-strip plate (21) lower surface
And two foldings born against in metal clips (22) are stuck up at section.
3. a kind of frequency PCB board test according to claim 2 connection slide glass, it is characterised in that：The mounting hole lead
Vertical runs through plate (10) plate body；Mounting hole shape in plate (10) presents two sections that sector hole diameter is more than hypomere aperture
Formula shoulder hole structure, elastic insulated pad post (30) shape are in the ladder shaft-like being adapted to above-mentioned shoulder hole structure；Positioned at elasticity
Columned compression bar of the filling arrangement for pushing against elastic insulated pad post (30) in the mounting hole of the top of insulation padding pole (30)
(40)；The upper surface of plate (10) is disposed with the jacking block (50) for pushing against compression bar (40), constitutes the affixed cooperation of screw thread between the two.
4. a kind of frequency PCB board test according to claim 3 connection slide glass, it is characterised in that：The mounting hole after
The continuous bottom face along jacking block (50) is recessed to form counter bore structure at jacking block (50)；The center lead of the top end face of jacking block (50)
Hang down through setting screw mounting hole, trip bolt (60) vertical to from top to bottom pass through screw mounting hole and on plate (10)
The affixed cooperation of screw thread is constituted between surface.
5. a kind of frequency PCB board test connection slide glass according to Claims 2 or 3 or 4, it is characterised in that：Plate
(10) it has been symmetrically extended fixed ear (11) at the both sides where upper surface, vertical is provided through on two fixed ears (11)
To pilot hole, guide rod (70) from top to bottom pass through the pilot hole to be screwed on above-mentioned sliding rail；Guide rod (70)
Compressed spring (80) is arranged at shaft, the upper end of compressed spring (80) is resisted against at the top nut of guide rod (70) and lower end is supported
It is against at the upper surface of fixed ear (11).
6. a kind of frequency PCB board test according to claim 1 or 2 or 3 or 4 connection slide glass, it is characterised in that：It is described
The impedance of micro-strip plate (21) is 50 Ω.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130486.XA CN105699879B (en) | 2016-03-08 | 2016-03-08 | A kind of frequency PCB board test connection slide glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130486.XA CN105699879B (en) | 2016-03-08 | 2016-03-08 | A kind of frequency PCB board test connection slide glass |
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| Publication Number | Publication Date |
|---|---|
| CN105699879A CN105699879A (en) | 2016-06-22 |
| CN105699879B true CN105699879B (en) | 2018-08-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108260276A (en) * | 2016-12-29 | 2018-07-06 | 安弗施无线射频系统（上海）有限公司 | The standing-wave ratio modulated structure and method of a kind of printed circuit board |
| CN107271732A (en) * | 2017-06-27 | 2017-10-20 | 安徽四创电子股份有限公司 | A kind of test fixture for low-noise amplifier |
| CN108132367B (en) * | 2017-12-14 | 2020-09-29 | 上海闻泰电子科技有限公司 | Radio frequency test equipment fixing device and radio frequency test system |
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| CN105699879A (en) | 2016-06-22 |
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