CN102466760A - Frequency measurement apparatus - Google Patents
Frequency measurement apparatus Download PDFInfo
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- CN102466760A CN102466760A CN2010105347903A CN201010534790A CN102466760A CN 102466760 A CN102466760 A CN 102466760A CN 2010105347903 A CN2010105347903 A CN 2010105347903A CN 201010534790 A CN201010534790 A CN 201010534790A CN 102466760 A CN102466760 A CN 102466760A
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- frequency
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- pneumatic
- support plate
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Abstract
The invention relates to a frequency measurement apparatus, which is used for connecting an information processing apparatus loaded with a frequency testing program so as to carry out measurement work of crystal oscillator frequency on a plurality of to-be-measured points of a to-be-measured circuit board. The frequency measurement apparatus comprises: a support plate, which has a plurality of test holes that are corresponded to all the to-be-measured points; a plurality of probes, which are correspondedly arranged in all the test holes as well as are respectively contacted with all the corresponded to-be-measured points and capturing crystal oscillator frequency signals of all the to-be-measured points; a pneumatic module, which includes a pressurization unit, a first pneumatic unit, and a first electronic switch unit; a frequency measurement module, which is used for receiving all the to-be-measured points' the crystal oscillator frequency signals captured by all the probes to carry out measurement; a main control module, which is used for controlling the pneumatic module according to the frequency testing program of the information processing apparatus so as to enable all the probes to be contacted with all the corresponded to-be-measured points on the to-be-measured circuit board as well as transmitting a frequency value output by the frequency measurement module to the information processing apparatus so as to enable test results of the to-be-measured points to be obtained by the frequency testing program.
Description
Technical field
The present invention relates to a kind of measurement jig, more know clearly it, relate to a kind of air pressure mode of utilizing and control the frequency measuring equipment of probe with the crystal oscillator frequency of measurement circuit board under test.
Background technology
, before product volume production or shipment, generally can the circuit board of this electronic product be detected like the electronic product of computer apparatus, the network equipment or electric household appliance etc., thus as the whether judgement of fault of this circuit board, to guarantee the quality of commercial prod.
Common circuit board detecting operation is through signal being introduced measurement jig (for example frequency counter or oscillograph) measurement point of this circuit board to be carried out the acquisition of signal frequency or waveform.Thereby; When input, need choose measurement point to carry out signal acquisition with test probe; And described measurement point is measured solder joint often at the component pin formation measurement solder joint of back of circuit board so need the circuit board turn-over is beneficial on its back elements pin, weld, after the measurement solder joint is somebody's turn to do in formation; Measure solder joint at this and connect frequency counter or oscillographic test probe, can begin this circuit board is detected.
And the weld job of aforementioned measurement solder joint, except that suitable trouble, the circuit board quantity that detects in desire more for a long time, more repeatedly carry out this weld job, so cause the increase of time and human cost.
In addition; Owing to be that this measurement solder joint is connected with frequency counter or oscillographic test probe only; So if overturn the circuit board in the detection because of carelessness; Then very likely because of pullling the measurement solder joint that is connected with probe, and this measurement solder joint is separated with the component pin of this circuit board, cause testing staff's weld job of having to again carry out.
In addition; In being directed against the signal frequency test item; Need a plurality of probes by phased manner the measurement point of contact circuit plate, needn't on circuit board, weld like aforementioned need and should measure solder joint though this kind signal frequency detects operation to carry out signal acquisition; But directly hand-held probe contacts its probe to carry out signal acquisition with the tested point of circuit board; But when detecting, often, test point accurately touches tested point, also than being easier to occur erroneous judgement etc. because of being not easy to control probe at back of circuit board with hand-held probe.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, one object of the present invention is to provide a kind of frequency measuring equipment, is prone to waste man-hour because of manual work when measuring circuit board under test to solve in the prior art and causes problem such as erroneous judgement.
For realizing above-mentioned purpose and other relevant purposes; The present invention provides a kind of frequency measuring equipment; Be used to connect the signal conditioning package that is mounted with the frequency test program, carry out the measurement operation of crystal oscillator frequency with a plurality of tested points to circuit board under test, this frequency measuring equipment comprises: support plate; In order to carrying this circuit board under test, and have a plurality of instrument connections corresponding with each tested point; A plurality of probes, correspondence are arranged in each instrument connection of this support plate, in order to each tested point that contacts correspondence in this circuit board under test respectively and the crystal oscillator frequency signal that captures each tested point; Pneumatic module comprises presser unit, is communicated with this presser unit and drives each probe via gas circuit and stretch in first pneumatic unit of this support plate and first electronic switch unit of controlling this first pneumatic unit folding; The frequency measurement module connects each probe, and this frequency measurement module, and is exported the frequency values of measuring measuring in order to the crystal oscillator frequency signal of each tested point of receiving each probe and capturing; And main control module; Be electrically connected at this signal conditioning package and this frequency measurement module; In order to this Pneumatic module of frequency test programmed control according to this signal conditioning package; So that each probe contacts each corresponding in this circuit board under test tested point respectively, and behind the frequency values of collecting this frequency measurement module output, transmit it to this signal conditioning package, to draw the test result of this tested point by this frequency test program.
In the aforementioned frequency measuring equipment of the present invention; It also includes test bench; This support plate is arranged on this test bench, and this test bench has bracing frame, the fixed head that this bracing frame is provided with second pneumatic unit and is connected with this second pneumatic unit; This second pneumatic unit is communicated with this presser unit via gas circuit, with the air pressure type of drive make this fixed head towards this support plate move down and press down clamping be carried on this circuit board under test on this support plate and move up away from this support plate one of them.
Moreover; In the aforementioned frequency measuring equipment of the present invention; It also comprises: second electronic switch unit; In order to control the aforementioned second pneumatic unit folding, move down with clamping towards this support plate with corresponding control aforementioned fixation plate and be carried on this circuit board under test on this support plate and control one of them that this fixed head moves up away from this support plate.
In addition; In the aforementioned frequency measuring equipment of the present invention; Also comprise: the second pressure control unit; It has second rain glass and second adjusting pressuring knob, and this second rain glass is in order to showing the air pressure in this second pneumatic unit, and this second adjusting pressuring knob is used the air pressure that inputs to this second pneumatic unit for this presser unit of fine setting via gas circuit.
Also have; In the aforementioned frequency measuring equipment of the present invention; Also comprise: the first pressure control unit; It has first rain glass and first adjusting pressuring knob, and this first rain glass is in order to showing the air pressure in this first pneumatic unit, and this first adjusting pressuring knob is used the air pressure that inputs to this first pneumatic unit for this presser unit of fine setting via gas circuit.
As stated; Frequency measuring equipment of the present invention is when the measurement operation of the crystal oscillator frequency of each tested point that captures this circuit board under test; By main control module and Pneumatic module interlock; Realizing that air pressure control probe replaces artificial hand-held probe mode on the tested point of circuit board under test, to carry out signal acquisition, and then solved in the prior art waste man-hour and caused problem such as erroneous judgement easily; Again by be electrically connected at as the main control module of the signal conditioning package of computer and frequency measurement module with acquisition to frequency values transport to this signal conditioning package; To draw the test result of this tested point by this frequency test program that it was loaded; And then realize a plurality of circuit board under test being carried out the operation of frequency measurement, and then promoted work efficiency greatly with the less time.
Description of drawings
Fig. 1 is the basic framework calcspar of frequency measuring equipment of the present invention; And
Fig. 2 is the outside drawing of frequency measuring equipment of the present invention.
The main element symbol description
1 signal conditioning package, 11 serial line interfaces
2 circuit board under test, 3 frequency measuring equipments
31 probes, 32 Pneumatic modules
321 presser unit, 3210 airways
322 first pneumatic units, 323 first electronic switch units
324 second pneumatic units, 325 second electronic switch units
327 second pressure control unit, 326 first pressure control unit
3,260 first rain glasss, 3,270 second rain glasss
3,261 first adjusting pressuring knobs, 3,271 second adjusting pressuring knobs
33 frequency measurement modules, 34 main control modules
341 control modules, 342 transmission interfaces
35 test benches, 350 bracing frames
351 support plates, 3510 instrument connections
3511 reference columns, 352 fixed heads
3520 thimbles, 3521 limiting holes
3500 atmospheric pressure poles.
Embodiment
Below through specific embodiment technology contents of the present invention is described, those skilled in the art can understand other advantages of the present invention and effect easily by the content that this instructions disclosed.The present invention also can implement or use through other different instantiations, and each item details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
See also Fig. 1 and Fig. 2, Fig. 1 is the basic framework calcspar of frequency measuring equipment of the present invention; Fig. 2 is the outside drawing of frequency measuring equipment of the present invention.What need special instruction is; Following accompanying drawing is the synoptic diagram of simplification; And basic conception of the present invention only is described in a schematic way; Therefore only show the element relevant with the present invention among the figure but not component number, shape and plotted when implementing according to reality, kenel, quantity and the ratio of each element can be a kind of random change during its actual enforcement, and its component placement kenel maybe be more complicated.
As shown in the figure; Frequency measuring equipment 3 of the present invention is used to connect the signal conditioning package 1 that is mounted with the frequency test program; A plurality of tested points (not shown) with to circuit board under test 2 capture its crystal oscillator frequency, and this frequency measuring equipment 3 comprises: a plurality of probe 31, Pneumatic module 32, frequency measurement module 33, main control module 34, have the test bench 35 of support plate 351 and fixed head 352.Aforementioned information treating apparatus 1 for example is mounted with the computer of frequency test program.
This support plate 351 is used to carry this circuit board under test 2; This fixed head 352 is in order to be clamped on the circuit board under test 2 that is carried on the support plate 351; In concrete embodiment; This fixed head 352 is provided with a plurality of thimbles 3520 towards the surface of this support plate 351,, compress this circuit board under test 2 and then reach the effect of more stablizing clamping circuit board under test 2 through these a plurality of thimbles 3520 during this circuit board under test 2 of clamping to press down at this fixed head 352.Each probe 31 is arranged at the bottom of this support plate 351; When this probe 31 is driven; Protrude from a plurality of instrument connections 3510 of this support plate 351; Be arranged at the tested point (not shown) at circuit board under test 2 back sides on this support plate 351 with contact, and then when each probe 31 energising, can capture the crystal oscillator frequency signal of a plurality of tested points of circuit board under test 2.Particularly; Each probe 31 is arranged on the pedestal (not shown) versatilely, and this pedestal is contained in this test bench 35, and this pedestal is communicated with an airway (not shown); And when in this airway, this probe 31 of gas percussion being arranged; This probe 31 is leant out by the top of pedestal, and then the instrument connection 3510 that protrudes from this support plate 351 is to contact the tested point at these circuit board under test 2 back sides, to carry out the acquisition operation of follow-up described tested point crystal oscillator frequency signal.
This Pneumatic module 32 is in order to drive each probe 31 to contact each tested point of this circuit board under test 2; And be used to drive this fixed head 352 and press down with this circuit board under test 2 of clamping, this Pneumatic module 32 comprises presser unit 321, first pneumatic unit 322, first electronic switch unit 323, second pneumatic unit 324, second electronic switch unit 325, the first pressure control unit 326 and the second pressure control unit 327.
This presser unit 321 for example is an air compressor machine; And can be contained in this test bench 35; Or be external in this test bench 35; With thinking that this Pneumatic module 32 provides source of the gas, in concrete embodiment, this air compressor machine is communicated with this first pneumatic unit 322 and this second pneumatic unit 324 through the gas circuit of airway as shown in Figure 2 3210.
This first pneumatic unit 322 is communicated with this presser unit 321 and drives each probe 31 via gas circuit (for example airway 3210) and stretches in this support plate 351; And this first pneumatic unit 322 is contained in this test bench 35; This first pneumatic unit 322 for example is a pneumatic valve; Its conducting when opening drives each probe 31 with the air pressure that utilizes this presser unit 321 and provide and leans out; With the instrument connection 3510 that protrudes from this support plate 351, and when pneumatic valve cuts out, this probe 31 is regained, in the instrument connection 3510 of imbedding this support plate 351.
This first electronic switch unit 323 is opened and closure in order to control this first pneumatic unit 322; This first electronic switch unit 323 is contained in this test bench 35; Control the instrument connection 3510 that this probe 31 protrudes from this support plate 351 thus; Or imbed in the instrument connection 3510 of this support plate 351, promptly this first electronic switch unit 323 stretches in this support plate 351 to drive each probe 31 via this presser unit 321 of gas circuit connection, and this first electronic switch unit 323 for example is a relay.
This first pressure control unit 326 inputs to the air pressure of this first pneumatic unit 322 in order to control this presser unit 321 via gas circuit, and to protrude from the power of instrument connection 3510 of this support plate 351 excessive and injure circuit board under test 2 to prevent air pressure from crossing ambassador's probe 31.With Fig. 2 is example; This first pressure control unit 326 has first rain glass 3260 and first adjusting pressuring knob 3261; This first rain glass 3260 and first adjusting pressuring knob 3261 can be arranged on this test bench 35; Atmospheric pressure value through this first rain glass 3260 is shown is understood the driving pressure that probe 31 protrudes from the instrument connection 3510 of this support plate 351 for the tester, and the tester can input to the air pressure of this first pneumatic unit 322 through these second adjusting pressuring knob, 3261 these presser unit 321 of fine setting via gas circuit.
This second pneumatic unit 324 is communicated with this presser unit 321 and drives this fixed head 352 via gas circuit and moves down towards this support plate 351, to press down this circuit board under test 2 of clamping; With Fig. 2 is example; This second pneumatic unit 324 for example is a cylinder; And this second pneumatic unit 324 is located on this test bench 35 through bracing frame 350; It the time provides air-breathing or scavenging action in ventilation, so that atmospheric pressure pole 3500 moves down towards this support plate 351 because of scavenging action drives this fixed head 352, or makes this atmospheric pressure pole 3500 leave this support plate 351 and move up because of getter action drives this fixed head 352; And rotation departs from original position in fixed head 352 moving process in order to avoid; Simultaneously can make fixed head 352 smooth-goingly along with atmospheric pressure pole 3500 moves, a side of this fixed head 352 is provided with limiting holes 3521, and is provided with the reference column 3511 that runs through this limiting holes 3521 at this bracing frame 350 and 352 of support plates; This fixed head 352 can be moved up and down along with these atmospheric pressure pole 3500 starts under the guiding of reference column 3511 smooth-goingly.
This second electronic switch unit 325 is opened and closure in order to control this second pneumatic unit 324; This second electronic switch unit 325 is contained in this test bench 35; Control this fixed head 352 thus and move with clamping circuit board under test 2 or leave this support plate 351 towards this support plate 351, this second electronic switch unit 325 is a relay.
This second pressure control unit 327 inputs to the air pressure of this second pneumatic unit 324 in order to control this presser unit 321 via gas circuit, with prevent air pressure cross ambassador's fixed head 352 towards this support plate 351 move to press down power excessive and injure circuit board under test 2.With Fig. 2 is example; This second pressure control unit 327 has second rain glass 3270 and second adjusting pressuring knob 3271; And this second rain glass 3270 and second adjusting pressuring knob 3271 can be arranged on the test bench 35; Atmospheric pressure value through this second rain glass 3270 is shown is understood the down force pressure that fixed head 352 moves towards this support plate 351 for the tester, and the tester can input to the air pressure of this second pneumatic unit 324 through these second adjusting pressuring knob, 3271 these presser unit 321 of fine setting via gas circuit.
This frequency measurement module 33 electrically connects each probe 31; And be contained in this test bench 35; Crystal oscillator frequency signal to receive each tested point that each probe 31 captured is measured, and the frequency values of measuring is exported, and this frequency measurement module 33 for example is a frequency counter.
This main control module 34 is electrically connected at this signal conditioning package 1 and this frequency measurement module 33; And be contained in this test bench 35; The transmission interface 342 that this main control module 34 has control module 341 and is electrically connected at this signal conditioning package; This control module 341 electrically connects first electronic switch unit 323 of this Pneumatic module 32; In order to first electronic switch unit 323 according to this Pneumatic module 32 of frequency test programmed control that loads in this signal conditioning package 1, so that sending with this frequency test program corresponding programs steering order, this first electronic switch unit 323 gives first pneumatic unit 322, make it drive each probe 31 and contact each corresponding in this circuit board under test 2 tested point respectively; For example; The type of drive of 322 pairs of each probes 31 of this first pneumatic unit can for example be each corresponding sequentially and in this circuit board under test 2 of discontinuity contact tested point, is transferred to this frequency measurement module 33 with the crystal oscillator frequency signal that captures each tested point, and this main control module 34 is behind the frequency values of collecting these frequency measurement module 33 outputs; Transmit it to signal conditioning package 1, to draw the test result of this tested point by this frequency test program.
The transmission interface 342 of this main control module 34 can be serial line interface (Serial port), and RS-232 interface etc. for example correspondingly, also has and is these transmission interface 342 mutual corresponding serial line interfaces 11 of serial line interface at this signal conditioning package 1 end.This control module 341 for example is PLD (Programmable Logic Controller; PLC), in order to generate the corresponding programs steering order according to the frequency test program in this signal conditioning package 1.
In the frequency measurement operating process of reality; Need this frequency measuring equipment 3 is connected with the signal conditioning package that is mounted with the frequency test program 1; Circuit board under test 2 is positioned on the support plate 351; Then; Open this presser unit 321, and regulate this presser unit 321 by this first pressure control unit 326 and the second pressure control unit 327 and input to the air pressure of this first pneumatic unit 322 and second pneumatic unit 324, this fixed head 352 is moved towards support plate 351 opening this second pneumatic unit 324 via gas circuit; Make this fixed head 352 press down clamping and be arranged at the circuit board under test 2 on this support plate 351; This control module 341 of this main control module 34 is given first pneumatic unit 322 according to first electronic switch unit 323 of this Pneumatic module 32 of frequency test programmed control that loads in this signal conditioning package 1 so that this first electronic switch unit 323 sends with this frequency test program corresponding programs steering order, makes it drive each probe 31 and protrudes from the instrument connection 3510 on this support plate 351 respectively; And contact in this circuit board under test 2 corresponding with it tested point; Be transferred to this frequency measurement module 33 with the crystal oscillator frequency signal that captures each tested point, this main control module 34 transfers to signal conditioning package 1 is drawn this tested point by this frequency test program test result again behind the frequency values that captures these frequency measurement module 33 outputs.
What this must propose explanation be; Frequency measuring equipment of the present invention is not limited to possess fixed head as shown in Figure 2 352, second pneumatic unit 324, airway 3210, first rain glass 3260, second rain glass 3270 and first adjusting pressuring knob 3261 and second adjusting pressuring knob 3271; In other words; Frequency measuring equipment of the present invention only need have in order to the support plate 351 that carries circuit board under test, with air pressure that presser unit 321 provided according to the closure or openness of first pneumatic unit 322 make the vapour-pressure type probes 31 that are embedded in the support plate 351 can protrude or be contained in instrument connection 3510 on this support plate 351, capture according to the tested point of these vapour-pressure type probe 31 these circuit board under test 2 of contact each tested point crystal oscillator frequency frequency measurement module 33 and in order to the crystal oscillator frequency of a plurality of tested points of uploading this circuit board under test main control module 34 to signal conditioning package 1; Can realize replacing the manual measurement operation, and the effect that acquisition is saved time and operation is easy.
In sum; When frequency measuring equipment of the present invention is measured operation at the crystal oscillator frequency that circuit board under test is carried out each tested point; By main control module and Pneumatic module interlock; Realizing the pneumatic control probe, so replace artificial with hand-held probe mode with the probe of probe one by one the tested point of contact measured circuit board carry out signal acquisition, and then solved waste man-hour in the prior art, operation inconvenience and cause problem such as erroneous judgement easily; By the main control module that is electrically connected at signal conditioning package and frequency measurement module the frequency values of collecting is transported to signal conditioning package is drawn this tested point by this frequency test program test result again; And then more can realize fast a plurality of circuit board under test being accomplished the work of frequency measurement, and promoted work efficiency greatly.
Above-mentioned embodiment is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and above-mentioned embodiment is modified and changed.Therefore, as long as those skilled in the art must be encompassed within protection scope of the present invention not breaking away from all equivalence modifications of being accomplished under disclosed spirit and the technological thought or changing.
Claims (10)
1. a frequency measuring equipment is used to connect the signal conditioning package that is mounted with the frequency test program, carries out the measurement operation of crystal oscillator frequency with a plurality of tested points to circuit board under test, it is characterized in that this frequency measuring equipment comprises:
Support plate in order to carrying this circuit board under test, and has a plurality of instrument connections corresponding with each tested point;
A plurality of probes, correspondence are arranged in each instrument connection of this support plate, in order to each tested point that contacts correspondence in this circuit board under test respectively and the crystal oscillator frequency signal that captures each tested point;
Pneumatic module comprises presser unit, is communicated with this presser unit and drives each probe via gas circuit and stretch in first pneumatic unit of this support plate and first electronic switch unit of controlling this first pneumatic unit folding;
The frequency measurement module connects each probe, and this frequency measurement module, and is exported the frequency values of measuring measuring in order to the crystal oscillator frequency signal of each tested point of receiving each probe and capturing; And
Main control module; Be connected with this signal conditioning package and this frequency measurement module; In order to this Pneumatic module of frequency test programmed control according to this signal conditioning package; So that each probe contacts each corresponding in this circuit board under test tested point respectively, and behind the frequency values of collecting this frequency measurement module output, transmit it to this signal conditioning package, to draw the test result of this tested point by this frequency test program.
2. frequency measuring equipment according to claim 1 is characterized in that, also comprises the first pressure control unit, in order to control this presser unit inputs to this first pneumatic unit via gas circuit air pressure.
3. frequency measuring equipment according to claim 1; It is characterized in that; Also include test bench; This support plate is arranged on this test bench, and this test bench has bracing frame, the fixed head that this bracing frame is provided with second pneumatic unit and is connected with this second pneumatic unit; This second pneumatic unit is communicated with this presser unit via gas circuit, with the air pressure type of drive make this fixed head towards this support plate move down and press down clamping be carried on this circuit board under test on this support plate and move up away from this support plate one of them.
4. frequency measuring equipment according to claim 3 is characterized in that, this fixed head is provided with a plurality of thimbles towards the face of this support plate, is carried on the circuit board under test on this support plate to stablize clamping.
5. frequency measuring equipment according to claim 3; It is characterized in that; Also comprise second electronic switch unit; In order to control this second pneumatic unit folding, move down with clamping towards this support plate with this fixed head of corresponding control and be carried on this circuit board under test on this support plate and control one of them that this fixed head moves up away from this support plate.
6. frequency measuring equipment according to claim 3 is characterized in that, also includes the second pressure control unit, in order to control this presser unit inputs to this second pneumatic unit via gas circuit air pressure.
7. frequency measuring equipment according to claim 6; It is characterized in that; This second pressure control unit has second rain glass and second adjusting pressuring knob; This second rain glass is in order to showing the air pressure in this second pneumatic unit, and this second adjusting pressuring knob is used the air pressure that inputs to this second pneumatic unit for this presser unit of fine setting via gas circuit.
8. frequency measuring equipment according to claim 2; It is characterized in that; This first pressure control unit has first rain glass and first adjusting pressuring knob; This first rain glass is in order to showing the air pressure in this first pneumatic unit, and this first adjusting pressuring knob is used the air pressure that inputs to this first pneumatic unit for this presser unit of fine setting via gas circuit.
9. frequency measuring equipment according to claim 1; It is characterized in that; This main control module has the control module of first electronic switch unit of this Pneumatic module of frequency test programmed control that loads according to this signal conditioning package; So that sending with this frequency test program corresponding programs steering order, this first electronic switch unit gives first pneumatic unit; Make it drive each probe corresponding with it tested point sequentially and in this circuit board under test of discontinuity contact, be transferred to this frequency measurement module with the crystal oscillator frequency signal that captures each tested point and with it.
10. frequency measuring equipment according to claim 1 is characterized in that this main control module has the transmission interface that is electrically connected at this signal conditioning package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105347903A CN102466760A (en) | 2010-11-08 | 2010-11-08 | Frequency measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105347903A CN102466760A (en) | 2010-11-08 | 2010-11-08 | Frequency measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102466760A true CN102466760A (en) | 2012-05-23 |
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ID=46070660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105347903A Pending CN102466760A (en) | 2010-11-08 | 2010-11-08 | Frequency measurement apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN102466760A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698603A (en) * | 2013-12-27 | 2014-04-02 | 深圳芯邦科技股份有限公司 | Chip, chip clock testing method and chip clock testing system |
| CN111193856A (en) * | 2020-04-13 | 2020-05-22 | 苏州昀冢电子科技股份有限公司 | Camera module motor carrier seat, detection equipment and method thereof, and motor |
| CN113125815A (en) * | 2019-12-31 | 2021-07-16 | 致茂电子(苏州)有限公司 | Electronic component testing device and probe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463684A1 (en) * | 1990-06-28 | 1992-01-02 | Koninklijke Philips Electronics N.V. | Test device for electric circuits on boards |
| CN201066379Y (en) * | 2007-06-18 | 2008-05-28 | 比亚迪股份有限公司 | Keyboard tester |
| CN201364345Y (en) * | 2008-12-03 | 2009-12-16 | 英华达（上海）科技有限公司 | Device for gas automatic test fixture |
| CN101806856A (en) * | 2009-12-25 | 2010-08-18 | 陈奕平 | Full-automatic circuit board testing machine |
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2010
- 2010-11-08 CN CN2010105347903A patent/CN102466760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463684A1 (en) * | 1990-06-28 | 1992-01-02 | Koninklijke Philips Electronics N.V. | Test device for electric circuits on boards |
| CN201066379Y (en) * | 2007-06-18 | 2008-05-28 | 比亚迪股份有限公司 | Keyboard tester |
| CN201364345Y (en) * | 2008-12-03 | 2009-12-16 | 英华达（上海）科技有限公司 | Device for gas automatic test fixture |
| CN101806856A (en) * | 2009-12-25 | 2010-08-18 | 陈奕平 | Full-automatic circuit board testing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698603A (en) * | 2013-12-27 | 2014-04-02 | 深圳芯邦科技股份有限公司 | Chip, chip clock testing method and chip clock testing system |
| CN103698603B (en) * | 2013-12-27 | 2017-03-15 | 深圳芯邦科技股份有限公司 | A kind of chip and its clock test methodology and chip clock test system |
| CN113125815A (en) * | 2019-12-31 | 2021-07-16 | 致茂电子(苏州)有限公司 | Electronic component testing device and probe |
| CN111193856A (en) * | 2020-04-13 | 2020-05-22 | 苏州昀冢电子科技股份有限公司 | Camera module motor carrier seat, detection equipment and method thereof, and motor |
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Application publication date: 20120523 |