CN203608206U - Universal airborne radio frequency module test platform - Google Patents
Universal airborne radio frequency module test platform Download PDFInfo
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- CN203608206U CN203608206U CN201320750282.8U CN201320750282U CN203608206U CN 203608206 U CN203608206 U CN 203608206U CN 201320750282 U CN201320750282 U CN 201320750282U CN 203608206 U CN203608206 U CN 203608206U
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 6
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- 238000004891 communication Methods 0.000 abstract description 26
- 230000010354 integration Effects 0.000 abstract 3
- 230000006870 function Effects 0.000 description 12
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- 238000004088 simulation Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
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- 238000011084 recovery Methods 0.000 description 6
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- 238000005070 sampling Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000004936 stimulating effect Effects 0.000 description 4
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
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Abstract
The utility model discloses a universal airborne radio frequency module test platform. The universal airborne radio frequency module test platform comprises a cabinet, and a universal airborne radio frequency module test circuit disposed in the cabinet; the universal airborne radio frequency module test circuit is mainly composed of a signal generator, and a switchboard, a bus integration interface circuit, a power circuit and a liquid crystal display which are connected with the signal generator; and the bus integration interface circuit is connected with the power circuit. The signal generator is utilized to centrally and uniformly implement test instruments, such as a signal source, a signal analyzer, an inquiry/response tester and a communication terminal device and the like, for detecting an airborne radio frequency module, the switchboard is utilized to switch and control signal output channels in the signal generator, and the test platform can be connected with any-type to-be-tested airborne radio frequency modules through the bus integration interface circuit, so that compatibility and flexibility for polytype airborne radio frequency modules are achieved; and the universal airborne radio frequency module test platform is simple in structure and portable.
Description
Technical field
The utility model relates to airborne radio-frequency module communication test detection field, specifically, is general airborne radio frequency module testing platform.
Background technology
The detection of the airborne radio-frequency module communication correlation function of tradition has mainly been combined by discrete instrument (as oscilloscope, universal instrument, radio-frequency signal generator etc.), in order to measure the various functions of airborne radio-frequency module, can produce with regard to realizing airborne all kinds of radio-frequency modules control signal, process each generic module self check and status signal, generation stimulating module base-band input signal, produce the each pattern-coding signal of L-band power amplifier module, produce the each pattern-coding signal of L-band power amplifier module, the function such as receiver module AD signal output waveform is analyzed.
In the past, the various functions detection means of measuring airborne radio-frequency module in order to reach is mainly to reply the checkout equipments such as tester (ATC) and communication terminal device by signal source, signal analyzer, Xun Wen radio-frequency module is checked UP, as with various signal sources for airborne all kinds of radio-frequency modules radiofrequency signal is provided, for each generic module provides self check and status signal, use oscilloscope to carry out waveform analysis to receiving modules A D output signal.But while using general detector device, cannot be for radio-frequency module provides some specific input signals (as: driving source, pattern-coding signal etc.), and the tool kind using is various, complicated operation, cost is higher, easy care more cannot not meet other a large amount of testing requirement.Because general detector device cost is higher, while maintenance, also must send special instrument testing agency calibration, and in the process using, the connected mode of test cable is comparatively loaded down with trivial details, the mobility of instrument is poor, greatly reducing the detection efficiency to product, cause the sharply decline of productivity, is ubiquitous present situation in the manufacturer of a large amount of airborne radio-frequency modules.
Utility model content
The purpose of this utility model is to provide general airborne radio frequency module testing platform, utilize signal generator by detect airborne radio-frequency module signal source, signal analyzer, inquiry reply the centralized and unified realization of the tester such as tester and communication terminal device, and utilize switchboard to carry out the signal delivery channel conversion and control in signal generator, and realize the connection with the tested airborne radio-frequency module of any type by bus integrated interface circuit, compatibility and the flexibility of the airborne radio-frequency module of polytype are realized, there is feature simple in structure, easy to carry.
The utility model is achieved through the following technical solutions: general airborne radio frequency module testing platform, comprise cabinet, and be arranged on the general airborne radio-frequency module test circuit in cabinet, described general airborne radio-frequency module test circuit is mainly by signal generator, and the switchboard being connected with signal generator, bus integrated interface circuit, power circuit, liquid crystal display form, described bus integrated interface circuit is connected with power circuit.
Its operation principle and effect: utilize cabinet that general airborne radio-frequency module test circuit is encapsulated, wherein, power circuit powers on to signal generator and bus integrated interface circuit, make signal generator and the work of bus integrated interface circuit, wherein signal generator will be surveyed the signal source of airborne radio-frequency module, signal analyzer, inquiry to reply the internal circuit of the tester such as tester and communication terminal device integrated, carry out channel switching by functional switch corresponding on switchboard simultaneously, to reach the object that uses various functions, liquid crystal display plays in the past independent signal source generator simultaneously, signal analyzer, inquiry reply the effect of the display screen of tester and communication terminal device etc., in use, bus integrated interface circuit completes CAN bus communication, synchronous bus communications, asynchronous bus communication, interface enable control, discrete lines control, the simulation of MARK address produces, add electric control button de-jitter, reset output key de-jitter, processing and the output of the function signals such as output enable button de-jitter, and by inner interface board, above-mentioned functions signal is delivered in the related circuit on tested airborne radio-frequency module.
For better realizing the utility model, also comprise that the waveform that same signal generator is connected recovers and exciting circuit.The waveform recovery and the exciting circuit that are connected on signal generator complete the data acquisition of 1 railway digital intermediate frequency input signal and the generation of recovery, 1 road stimulating module baseband signal generation and two-way 100MHz reference frequency signal.
For better realizing the utility model, described power circuit comprises successively connected ATX power supply, electric source monitoring circuit, mains switch, and described ATX power supply is all connected with signal generator with electric source monitoring circuit.In use, ATX power supply on power circuit provides 5V to signal generator, the operating voltage of 12V, 5V is also provided to electric source monitoring circuit simultaneously, the operating voltage of 12V, make electric source monitoring circuit work, accessed by outside+28V A+5V D+5V-5V-5 groups of power supplys of 30V are monitored through electric source monitoring circuit by mains switch, to determine whether as range of normal value, then be transported to airborne radio-frequency module to be tested by mains switch through an interface board again, airborne radio-frequency module can be worked and in state to be tested, and can not damage airborne radio-frequency module because power supply mistake.
For better realizing the utility model, described waveform recovers and exciting circuit comprises the FPGA processor B that employing model is XC3SD3400A, and respectively with the connected DS92LV16 of FPGA processor B, AD9777, OSC circuit; Also comprise successively connected pci interface plate, PLX9054, described PLX9054 connects FPGA processor B, and described pci interface plate connects signal generator; Also comprise successively connected OCXO circuit and merit parallel circuit.
In use, utilize DS92LV16 to receive digital medium-frequency signal and revert to 16bits data-signal, one tunnel access FPGA processor B (XC3SD3400A) utilizes pci interface plate in LCDs, to carry out time domain waveform demonstration through signal analyzer, and the FPGA processor B of leading up to is sent IQ data into AD9777 and carried out DAC conversion and on testboard, can utilize spectrum analyzer to observe spectrum signal.Multiple sampling clock is to utilize the DCM module of FPGA processor B and switching over mode to produce, 40MHz, 32.512MHz in outside input OSC circuit, the clock frequency of 33.3MHz, 35.2MHz, can produce 32.512MHz, 70 × 4/17MHz, 35.2MHz, 40MHz, 33.3MHz, 36MHz totally 6 kinds of sampling clocks through FPGA processor B.100MHz reference frequency signal is produced the sinusoidal signal of 6dBm by an OCXO, the signal that the merit parallel circuit forming through 3 18 Ohmic resistances is exported the 2 about 0dBm in tunnel is for tested module.
For better realizing the utility model, described bus integrated interface circuit comprises FPGA processor A, CAN protocol processor A, the CAN protocol processor B that the employing model that is connected with signal generator is respectively XC3SD3400A, described CAN protocol processor A is connected with J30J connector by CAN interface A, and described CAN protocol processor B is connected with J30J connector by CAN interface B; Also comprise the MARK output relay, discrete lines interface, LVDS interface, the RS485 interface that are connected with J30J connector with FPGA processor A respectively, power up control relay, OC door, on FPGA processor A, be also connected with buffer circuit.
In use, signal generator produces discrete lines signal, pattern-coding signal, base-band input signal, CAN bus signals, RS485/LVDS(synchronous/asynchronous in conjunction with the FPGA processor A (XC3SD3400A) of bus integrated interface circuit inside by different instructions) serial bus signal, spi bus signal, then through CAN protocol processor A, CAN interface A, CAN protocol processor B, CAN interface B, CAN bus signals is transferred to by J30J connector in tested airborne radio-frequency module, utilize MARK output relay, discrete lines interface, LVDS interface, RS485 interface, power up control relay, the corresponding MARK signal of goalkeeper OC, discrete lines signal, RS485/LVDS(synchronous/asynchronous) serial bus signal, add electric control signal, OC gate signal is transferred on airborne radio-frequency module by J30J connector, mainly complete CAN bus communication to reach, synchronous bus communications, asynchronous bus communication, interface enable control, discrete lines control, the simulation of MARK address produces, add electric control button de-jitter, reset output key de-jitter, the functions such as output enable button de-jitter.
Three road buttons are connected with FPGA processor A through buffer circuit, and its effect is to be respectively " adding electric control ", " output enable ", reset output.After adding that electric control is strong and pressing, 28V path just allows to export; When output enable is strong while being pressed, RS485, CAN etc. could produce signal; While exporting strong being pressed when resetting, produce the pulse signal of the Low level effective of a 200ms.For meet fast with at a slow speed between difference pci bus interface adopted FIFO memory technology while communicating by letter with other bus interface.
For better realizing the utility model, it is the military Portable machine box of NT-G2000 that described cabinet adopts model.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model utilize signal generator by detect airborne radio-frequency module signal source, signal analyzer, inquiry reply the centralized and unified realization of the tester such as tester and communication terminal device, and utilize switchboard to carry out the signal delivery channel conversion and control in signal generator, and realize the connection with the tested airborne radio-frequency module of any type by bus integrated interface circuit, compatibility and the flexibility of the airborne radio-frequency module of polytype are realized, there is feature simple in structure, easy to carry.
(2) waveform recovery described in the utility model and exciting circuit can complete the data acquisition of digital intermediate frequency input signal and the generation of recovery, the generation of stimulating module baseband signal and two-way 100MHz reference frequency signal.
(3) electric source monitoring circuit described in the utility model can monitor to airborne radio-frequency module institute voltage supplied whether conform with normal range value, to reach the object that can not damage airborne radio-frequency module.
(4) the utility model utilizes bus integrated interface circuit to complete CAN bus communication, synchronous bus communications, asynchronous bus communication, interface enable control, discrete lines control, the simulation generation of MARK address, add the functions such as electric control button de-jitter, reset output key de-jitter, output enable button de-jitter.
Accompanying drawing explanation
Fig. 1 is general airborne radio-frequency module test circuit block diagram described in the utility model.
Fig. 2 is bus integrated interface circuit figure described in the utility model.
Fig. 3 is that waveform described in the utility model recovers and exciting circuit figure.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment:
General airborne radio frequency module testing platform, shown in Fig. 1, Fig. 2 and Fig. 3, comprise cabinet, and be arranged on the general airborne radio-frequency module test circuit in cabinet, described general airborne radio-frequency module test circuit is mainly by signal generator, and the switchboard being connected with signal generator, bus integrated interface circuit, power circuit, liquid crystal display form, described bus integrated interface circuit is connected with power circuit.
Its operation principle and effect: utilize cabinet that general airborne radio-frequency module test circuit is encapsulated, wherein, power circuit powers on to signal generator and bus integrated interface circuit, make signal generator and the work of bus integrated interface circuit, wherein signal generator will be surveyed the signal source of airborne radio-frequency module, signal analyzer, inquiry to reply the internal circuit of the tester such as tester and communication terminal device integrated, carry out channel switching by functional switch corresponding on switchboard simultaneously, to reach the object that uses various functions, liquid crystal display plays in the past independent signal source generator simultaneously, signal analyzer, inquiry reply the effect of the display screen of tester and communication terminal device etc., in use, bus integrated interface circuit completes CAN bus communication, synchronous bus communications, asynchronous bus communication, interface enable control, discrete lines control, the simulation of MARK address produces, add electric control button de-jitter, reset output key de-jitter, processing and the output of the function signals such as output enable button de-jitter, and by inner interface board, above-mentioned functions signal is delivered in the related circuit on tested airborne radio-frequency module.
For better realizing the utility model, shown in Fig. 1, Fig. 2 and Fig. 3, also comprise that the waveform that same signal generator is connected recovers and exciting circuit.The waveform recovery and the exciting circuit that are connected on signal generator complete the data acquisition of 1 railway digital intermediate frequency input signal and the generation of recovery, 1 road stimulating module baseband signal generation and two-way 100MHz reference frequency signal.
For better realizing the utility model, shown in Fig. 1, Fig. 2 and Fig. 3, described power circuit comprises successively connected ATX power supply, electric source monitoring circuit, mains switch, and described ATX power supply is all connected with signal generator with electric source monitoring circuit.In use, ATX power supply on power circuit provides 5V to signal generator, the operating voltage of 12V, 5V is also provided to electric source monitoring circuit simultaneously, the operating voltage of 12V, make electric source monitoring circuit work, accessed by outside+28V A+5V D+5V-5V-5 groups of power supplys of 30V are monitored through electric source monitoring circuit by mains switch, to determine whether as range of normal value, then be transported to airborne radio-frequency module to be tested by mains switch through an interface board again, airborne radio-frequency module can be worked and in state to be tested, and can not damage airborne radio-frequency module because power supply mistake.
For better realizing the utility model, shown in Fig. 1, Fig. 2 and Fig. 3, described waveform recovers and exciting circuit comprises the FPGA processor B that employing model is XC3SD3400A, and respectively with the connected DS92LV16 of FPGA processor B, AD9777, OSC circuit; Also comprise successively connected pci interface plate, PLX9054, described PLX9054 connects FPGA processor B, and described pci interface plate connects signal generator; Also comprise successively connected OCXO circuit and merit parallel circuit.
In use, utilize DS92LV16 to receive digital medium-frequency signal and revert to 16bits data-signal, one tunnel access FPGA processor B (XC3SD3400A) utilizes pci interface plate in LCDs, to carry out time domain waveform demonstration through signal analyzer, and the FPGA processor B of leading up to is sent IQ data into AD9777 and carried out DAC conversion and on testboard, can utilize spectrum analyzer to observe spectrum signal.Multiple sampling clock is to utilize the DCM module of FPGA processor B and switching over mode to produce, 40MHz, 32.512MHz in outside input OSC circuit, the clock frequency of 33.3MHz, 35.2MHz, can produce 32.512MHz, 70 × 4/17MHz, 35.2MHz, 40MHz, 33.3MHz, 36MHz totally 6 kinds of sampling clocks through FPGA processor B.100MHz reference frequency signal is produced the sinusoidal signal of 6dBm by an OCXO, the signal that the merit parallel circuit forming through 3 18 Ohmic resistances is exported the 2 about 0dBm in tunnel is for tested module.
For better realizing the utility model, shown in Fig. 1, Fig. 2 and Fig. 3, described bus integrated interface circuit comprises FPGA processor A, CAN protocol processor A, the CAN protocol processor B that the employing model that is connected with signal generator is respectively XC3SD3400A, described CAN protocol processor A is connected with J30J connector by CAN interface A, and described CAN protocol processor B is connected with J30J connector by CAN interface B; Also comprise the MARK output relay, discrete lines interface, LVDS interface, the RS485 interface that are connected with J30J connector with FPGA processor A respectively, power up control relay, OC door, on FPGA processor A, be also connected with buffer circuit.
In use, signal generator produces discrete lines signal, pattern-coding signal, base-band input signal, CAN bus signals, RS485/LVDS(synchronous/asynchronous in conjunction with the FPGA processor A (XC3SD3400A) of bus integrated interface circuit inside by different instructions) serial bus signal, spi bus signal, then through CAN protocol processor A, CAN interface A, CAN protocol processor B, CAN interface B, CAN bus signals is transferred to by J30J connector in tested airborne radio-frequency module, utilize MARK output relay, discrete lines interface, LVDS interface, RS485 interface, power up control relay, the corresponding MARK signal of goalkeeper OC, discrete lines signal, RS485/LVDS(synchronous/asynchronous) serial bus signal, add electric control signal, OC gate signal is transferred on airborne radio-frequency module by J30J connector, mainly complete CAN bus communication to reach, synchronous bus communications, asynchronous bus communication, interface enable control, discrete lines control, the simulation of MARK address produces, add electric control button de-jitter, reset output key de-jitter, the functions such as output enable button de-jitter.
Three road buttons are connected with FPGA processor A through buffer circuit, and its effect is to be respectively " adding electric control ", " output enable ", reset output.After adding that electric control is strong and pressing, 28V path just allows to export; When output enable is strong while being pressed, RS485, CAN etc. could produce signal; While exporting strong being pressed when resetting, produce the pulse signal of the Low level effective of a 200ms.For meet fast with at a slow speed between difference pci bus interface adopted FIFO memory technology while communicating by letter with other bus interface.
The utility model can produce the baseband signal of all kind of modulations such as ASK, BPSK, MSK, while producing base band pumping signal, FPGA processor B is delivered to the Wave data in register in AD9777 and is produced with the baseband waveform of carrier signal and after conversion, send to the driving source of tested module as tested module with delivering in DS93LV16.
The utility model can produce as radar mode code signals such as A/C pattern, S patterns, and pattern-coding signal produces 2 tunnels: AM and ASK.
AM signal is high effectively TTL gate-control signal, ASK code signal need to be covered completely.In addition, AM is apart from the leading time interval and rear adjustable along the time interval of ASK code signal, and it is 1ms that maximum allows to arrange scope, and it is 100ns that minimum arranges stepping.
ASK code signal is high effectively pulse signal, and wherein number of pulses, pulse duration, pulse spacing, duty ratio can allow to adjust, and it is 50ns that minimum arranges stepping.
Utilize the RS232 mouth of signal generator that the parameter such as cycle, amplitude is sent to FPGA processor A, FPGA processor A is according to the coding of parameter generating AM and ASK and sequential.
The simulation of MARK address
MARK address simulation is to utilize the serial ports of signal generator to send the MARK address value when front module, utilize the output of FPGA processor A drive relay obtain 6 tunnels unsettled/output signal on ground.
For better realizing the utility model, it is the military Portable machine box of NT-G2000 that described cabinet adopts model.
The utility model utilize signal generator by detect airborne radio-frequency module signal source, signal analyzer, inquiry reply the centralized and unified realization of the tester such as tester and communication terminal device, and utilize switchboard to carry out the signal delivery channel conversion and control in signal generator, and realize the connection with the tested airborne radio-frequency module of any type by bus integrated interface circuit, compatibility and the flexibility of the airborne radio-frequency module of polytype are realized, there is feature simple in structure, easy to carry.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection range of the present utility model.
Claims (6)
1. general airborne radio frequency module testing platform, it is characterized in that: comprise cabinet, and be arranged on the general airborne radio-frequency module test circuit in cabinet, described general airborne radio-frequency module test circuit is mainly by signal generator, and the switchboard being connected with signal generator, bus integrated interface circuit, power circuit, liquid crystal display form, described bus integrated interface circuit is connected with power circuit.
2. general airborne radio frequency module testing platform according to claim 1, is characterized in that: also comprise that the waveform that same signal generator is connected recovers and exciting circuit.
3. general airborne radio frequency module testing platform according to claim 2, it is characterized in that: described power circuit comprises successively connected ATX power supply, electric source monitoring circuit, mains switch, described ATX power supply is all connected with signal generator with electric source monitoring circuit.
4. according to the general airborne radio frequency module testing platform described in claim 2 or 3, it is characterized in that: described waveform recovers and exciting circuit comprises the FPGA processor B that employing model is XC3SD3400A, and respectively with the connected DS92LV16 of FPGA processor B, AD9777, OSC circuit; Also comprise successively connected pci interface plate, PLX9054, described PLX9054 connects FPGA processor B, and described pci interface plate connects signal generator; Also comprise successively connected OCXO circuit and merit parallel circuit.
5. according to the general airborne radio frequency module testing platform described in claim 1-3 any one, it is characterized in that: described bus integrated interface circuit comprises FPGA processor A, CAN protocol processor A, the CAN protocol processor B that the employing model that is connected with signal generator is respectively XC3SD3400A, described CAN protocol processor A is connected with J30J connector by CAN interface A, and described CAN protocol processor B is connected with J30J connector by CAN interface B; Also comprise the MARK output relay, discrete lines interface, LVDS interface, the RS485 interface that are connected with J30J connector with FPGA processor A respectively, power up control relay, OC door, on FPGA processor A, be also connected with buffer circuit.
6. according to the general airborne radio frequency module testing platform described in claim 1-3 any one, it is characterized in that: it is the military Portable machine box of NT-G2000 that described cabinet adopts model.
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| CN201320750282.8U CN203608206U (en) | 2013-11-25 | 2013-11-25 | Universal airborne radio frequency module test platform |
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| CN201320750282.8U CN203608206U (en) | 2013-11-25 | 2013-11-25 | Universal airborne radio frequency module test platform |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539376A (en) * | 2015-01-04 | 2015-04-22 | 北京军懋国兴科技有限公司 | Portable test equipment for flight data recorder system |
| CN104880627A (en) * | 2015-05-15 | 2015-09-02 | 哈尔滨飞机工业集团有限责任公司 | Onboard range finder testing device |
| CN105446258A (en) * | 2015-12-21 | 2016-03-30 | 武汉中元通信股份有限公司 | CPCI bus transmission-based communication equipment integrated detection platform |
| CN105938191A (en) * | 2016-06-27 | 2016-09-14 | 芜湖航飞科技股份有限公司 | Secondary radar emission radio frequency assembly function tester apparatus |
| CN109669164A (en) * | 2018-12-24 | 2019-04-23 | 中国科学院电子学研究所 | A kind of SAR image display equipment |
| CN113965501A (en) * | 2021-09-30 | 2022-01-21 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Communication navigation recognition system module test platform |
| CN114325304A (en) * | 2021-11-24 | 2022-04-12 | 国营芜湖机械厂 | Universal detection device and detection method for airborne radio frequency circuit board |
-
2013
- 2013-11-25 CN CN201320750282.8U patent/CN203608206U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539376A (en) * | 2015-01-04 | 2015-04-22 | 北京军懋国兴科技有限公司 | Portable test equipment for flight data recorder system |
| CN104539376B (en) * | 2015-01-04 | 2023-07-04 | 北京军懋国兴科技股份有限公司 | Portable flight parameter system's test equipment |
| CN104880627A (en) * | 2015-05-15 | 2015-09-02 | 哈尔滨飞机工业集团有限责任公司 | Onboard range finder testing device |
| CN105446258A (en) * | 2015-12-21 | 2016-03-30 | 武汉中元通信股份有限公司 | CPCI bus transmission-based communication equipment integrated detection platform |
| CN105446258B (en) * | 2015-12-21 | 2018-08-17 | 武汉中元通信股份有限公司 | Communication equipment comprehensive detection platform based on cpci bus transmission |
| CN105938191A (en) * | 2016-06-27 | 2016-09-14 | 芜湖航飞科技股份有限公司 | Secondary radar emission radio frequency assembly function tester apparatus |
| CN109669164A (en) * | 2018-12-24 | 2019-04-23 | 中国科学院电子学研究所 | A kind of SAR image display equipment |
| CN113965501A (en) * | 2021-09-30 | 2022-01-21 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Communication navigation recognition system module test platform |
| CN114325304A (en) * | 2021-11-24 | 2022-04-12 | 国营芜湖机械厂 | Universal detection device and detection method for airborne radio frequency circuit board |
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Address after: 610000 No.6, Wuke East 3rd road, Wuhou e-commerce industry functional zone management committee, Wuhou District, Chengdu City, Sichuan Province Patentee after: Chengdu nengtong Technology Co.,Ltd. Address before: 610000 402, building 13, No.17, Wuxing 2nd Road, Wuhou District, Chengdu, Sichuan Province Patentee before: CHENGDU LAND TOP TECHNOLOGY CO.,LTD. |
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Granted publication date: 20140521 |