CN103138858B - Test system for interface board - Google Patents
Test system for interface board Download PDFInfo
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- CN103138858B CN103138858B CN201310022767.XA CN201310022767A CN103138858B CN 103138858 B CN103138858 B CN 103138858B CN 201310022767 A CN201310022767 A CN 201310022767A CN 103138858 B CN103138858 B CN 103138858B
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- interface board
- signal
- transfer unit
- test system
- vector network
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Abstract
The invention discloses a test system for an interface board. The test system for the interface board comprises a vector network analysis unit and a signal transfer unit, wherein the signal transfer unit is used for inputting first original signals of a to-be-input interface board respectively to the vector network analysis unit and an interface board, for receiving second transmitting signals output by the interface bard after second original signals are transmitted by the interface board, and for transmitting the second transmitting signals to the vector network analysis unit; and the vector network analysis unit I is used for receiving the first original signals, for receiving first transmitting signals output by the interface bard after the first original signals are transmitted by the interface board, for testing the interface board according to the first original signals and the first transmitting signals, for receiving the second original signals of the to-be-input interface board, for accessing the second transmitting signals from the signal transfer unit, and testing the interface board according to the second original signals and the second transmitting signals. By means of the technical scheme, the problem that an existing test method is not perfect is resolved.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of test system for interface board.
Background technology
Digital microwave transceiver (Out Door Unit, ODU) be Outdoor Device Unit in whole microwave relay communication system, its operating frequency is divided into 11 frequency ranges such as 6G, 7G, 8G, 11G, 13G, 15G, 18G, 23G, 32G, 38G, 42G by frequency range at present, and its concrete frequency range is determined according to the open source of every country.Its transmitting power is usually within 1W, and communication distance is about about 80km (relevant with a function power to working frequency range) farthest.
ODU is one of performance bottleneck in whole microwave relay communication.Because its working frequency points is very high, very high to the technological requirement of device, also there is strict requirement to reliability, cause the price of ODU very high.Further, at microwave frequency band, overall design and the manufacturing are difficult to accomplish that consistency is good especially, and need involving in of more artificial debugging and operation, this cost that result also in ODU is very high, and production capacity is limited.
As shown in Figure 1, for existing ODU structural representation, this ODU is made up of three parts altogether, board for receiving and sending message 11 (TRX), interface board 12 and duplexer 13 respectively, wherein, interface board 12 and digital microwave indoor unit (Indoor Unit, IDU) 5 road signals are had between, 350MHz signal, OOK (5MHz) ,-48V voltage signal that IDU sends into interface board 12 respectively, interface board 12 sends into 140MHz signal, the OOK (1MHz) of IDU, and duplexer 13 is connected with microwave antenna.
As shown in Figure 2, for the schematic diagram of interface board 12 in ODU shown in Fig. 1, interface board 12 have two preset to coupling (N connector 121 and BNC connector 122) and a socket, as shown in Figure 1, under mode of operation, N connector 121 is used for connecting with the interface of digital microwave indoor unit (Indoor Unit, IDU); BNC connector 122 is used for being connected with outfield Installation and Debugging interface; Socket 123 is 80 core sockets, is used for being connected with board for receiving and sending message 11.In order to ensure that interface board 12 communicates normally with IDU, board for receiving and sending message 11, test with regard to needing the performance of docking oralia 12.The following functions that interface board 12 mainly completes: (1) powers.By builtin voltage transition module 124 ,-48V is converted to the 6 road voltages that each device in board for receiving and sending message 11 provides needs.(2) filter transmission.Be input in board for receiving and sending message 11 after the 350MHz signal that IDU sends into is amplified after filtering; Receive the feeding of the 140MHz signal filtering after frequency conversion IDU through board for receiving and sending message 11 and carry out demodulation process.(3) communicate with IDU.IDU is controlled ODU by OOK, and all orders are transferred to the CPU125 in interface board 12 by OOK, by CPU125 by command routing in board for receiving and sending message 11.
The method of testing of existing interface plate is: used by interface board screw to be fixed in a frock, the N connector of interface board welds N Connector, uses T connector connector to be connected with N Connector: termination-48 voltage signal of T connector connector, 1 port of a termination vector network analyzer, a termination N Connector; From 80 core sockets interface board, transmitting-receiving two paths of signals is drawn 2,3 ports connecing vector network analyzer respectively by a frock platelet.Existing method of testing has a lot of shortcoming, as: comparatively complicated, be only applicable to research and develop small-lot testing, can not be used for producing test in enormous quantities; During test, with interface board just by the connection of 80 core sockets, cannot fix steadily, well can not ensure that contact is completely good, so each test needs constantly to regulate, and cannot ensure efficient test; Need N Connector to weld with interface board, time-consuming, effort, and operation is more.Most important, also being the most outstanding shortcoming is, usual interface board only has two preset joints and a socket, preset joint is inadequate, when the N Connector that will N connector welds is as 1 port of vector network analyzer, 350MHz output is as 2 ports, when 140MHz output is as 3 port, due in interface board, 350MHz link has a low noise amplifier, docking oralia is needed to power up test, therefore, 1 port of vector network analyzer had both needed to provide-48V power supply signal, also need to provide 350MHz or 140MHz signal, this is concerning not introducing other equipment, vector network analyzer cannot realize performance test.
Summary of the invention
The invention provides a kind of test system for interface board, solve the problem that existing test mode is perfect not.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of test system for interface board, comprises vector network analysis unit and signal transfer unit, and wherein, described signal transfer unit is used for the first original signal of interface board to be entered to input to vector network analysis unit and interface board respectively; For accessing described interface board the second original signal transmitted to the second transmission signal of rear output, and described second transmission signal is transferred to described vector network analysis unit; Described vector network analysis unit is used for accessing the first original signal from described signal transfer unit, access from interface board described interface board to transmit rear output the first transmission signal to described first original signal, and according to described first original signal and described first transmission signal, described interface board is tested; Also for accessing the second original signal of described interface board to be entered, access from described signal transfer unit described interface board to transmit rear output the second transmission signal to described second original signal, and according to described second original signal and described second transmission signal, described interface board is tested.
Further, test system for interface board also comprises main control unit, for carrying out Automated condtrol to the work of described vector network analysis unit, signal transfer unit and interface board.
Further, described vector network analysis unit is used for accessing described first transmission signal and described second original signal by the socket of described interface board.
Further, described vector network analysis unit is the vector network analyzer with 4 ports, and each port is respectively used to from described first original signal of described signal transfer unit access, from described first transmission signal of described interface board access, from described second original signal of described interface board access, from described second transmission signal of described signal transfer unit access.
Further, described signal transfer unit is used for, by the same preset joint of described interface board, described first original signal is inputted described interface board, and described second transmission signal of access.
Further, described power supply signal also for accessing power supply signal, and is accessed described interface board by the described same preset joint of described interface board by described signal transfer unit.
Further, test system for interface board also comprises the interface board fixture for fixing described interface board.
Further, described interface board fixture comprise for horizontal positioned interface board base, be arranged on described base and the electric connection part that is connected with described signal transfer unit of one end, and for described interface board is pressed in described base, make the preset joint of described interface board and the close-connected compressing structure of described electric connection part.
Further, described electric connection part is telescopic probe.
Further, described base is provided with the through hole coordinated with described probe.
A kind of test system for interface board provided by the invention, solves the not enough problem of the preset joint of interface board by signal transfer unit.Further, also by main control unit, Automated condtrol is carried out to test process, abandoned original complexity, cannot the shortcoming of volume production, can test interface plate rapidly and efficiently.Further, interface board fixture adopts base, is electrically connected the cooperation of part and compressing structure, is electrically connected part and is directly connected with the preset joint of interface board, do not need to weld N connector on preset joint, avoid many problems that time-consuming, artificial welding causes.And, interface board under the compressing of compressing structure with elastic force probes touch, good probes touch and ground connection ensure that the accuracy of test.
Accompanying drawing explanation
Fig. 1 is existing ODU structural representation;
Fig. 2 is the schematic diagram of interface board in ODU shown in Fig. 1;
The schematic diagram of the test system for interface board that Fig. 3 provides for one embodiment of the invention;
The schematic diagram of the test system for interface board that Fig. 4 another embodiment of the present invention provides;
Fig. 5 is the schematic diagram of the signal transfer unit in test system for interface board shown in Fig. 4.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
The schematic diagram of the test system for interface board that Fig. 3 provides for one embodiment of the invention, please refer to Fig. 3: test system for interface board 3 comprises vector network analysis unit 31 and signal transfer unit 32, wherein,
Signal transfer unit 32 is for inputing to vector network analysis unit 31 and interface board respectively by the first original signal P1 of interface board to be entered; For accessing described interface board the second original signal P2 transmitted to the second transmission signal P2 ' of rear output, and described second transmission signal P2 ' is transferred to described vector network analysis unit 31;
Vector network analysis unit 31 is for accessing the first original signal P1 from described signal transfer unit 32, access from interface board described interface board to transmit rear output the first transmission signal P1 ' to described first original signal P1, and according to described first original signal P1 and described first transmission signal P1 ', described interface board is tested; Also for accessing the second original signal P2 of described interface board to be entered, access from described signal transfer unit 32 described interface board to transmit rear output the second transmission signal P2 ' to the second original signal P2, and according to described second original signal P2 and described second transmission signal P2 ', described interface board is tested.
Preferably, test system for interface board 3 also comprises main control unit further, for carrying out Automated condtrol to the work of vector network analysis unit 31, signal transfer unit 32 and interface board, realizes the automation of test process.
Preferably, vector network analysis unit 31 accesses described first transmission signal and described second original signal for the socket by described interface board.
Preferably, described first original signal is inputted described interface board for the same joint (such as: N connector) by described interface board by signal transfer unit 32, and described second transmission signal of access.In another embodiment, described power supply signal also for accessing power supply signal, and is accessed described interface board by the described same joint of described interface board by signal transfer unit 32.
In another embodiment, test system for interface board 3 also comprises the interface board fixture for fixing described interface board, interface board fixture comprise for horizontal positioned interface board base, be arranged on described base and the electric connection part that is connected with described signal transfer unit 32 of one end, and for described interface board is pressed in described base, make the preset joint of described interface board and the close-connected compressing structure of described electric connection part.After compressing structure is subject to the power from top, interface board is pressed down and ensure that the preset joint of interface board is connected fully with the electric connection part be arranged on base; The one end being electrically connected part is connected with signal transfer unit 32, and the other end is electrically connected with the preset joint of the interface board be placed horizontally on base.Preferably, being electrically connected part is the telescopic probe that metal material is made, base is provided with the through hole coordinated with described probe, when interface board is pressed on base by compressing structure, telescopic probe compressing under can with the preset joint compact siro spinning technology of interface board.
The schematic diagram of the test system for interface board that Fig. 4 provides for another embodiment of the present invention, please refer to Fig. 4: test system for interface board comprises vector network analyzer 51, signal transfer unit 52, main control terminal 53, interface board 54 and programmable power supply 55, and wherein interface board 54 is fixed on fixture.
Programmable power supply 55 for providing power supply, such as-48V power supply.Can under the control of main control terminal 53, control signal transfer unit 52 provides-48V power supply to interface board 54.
Vector network analyzer 51 has 4 ports, as shown in Figure 5, be respectively port one, port 2, port 3 and port 4, port one, port 2 is connected with signal transfer unit 52 respectively, before the control of main control terminal 53, port one can be used for transmission first original signal P1 (such as: IDU waits to send into the 350MHz signal of interface board 54) after being connected with signal transfer unit 52, port 2 can be used for transmission second transmission signal P2 ' (such as: receive after frequency conversion through board for receiving and sending message after being connected with signal transfer unit 52, and after interface board 54 transmits, the 140MHz signal of IDU to be sent to), port 3, port 4 are connected with the socket 541 of interface board 54 respectively, before the control of main control terminal 53, port 3 can be used for by the first transmission signal P1 ' of exporting after transmitting through interface board 54 (such as after being connected with the socket 541 of interface board 54, IDU sends into the 350MHz signal of interface board 54, the signal of transmission after interface board 54 transmits) access vector network analyzer 51, port 2 can be used for the second original signal P2 (such as: the 140MHz signal of board for receiving and sending message interface board 54 to be entered) to access vector network analyzer 51 after being connected with the socket 541 of interface board 54.
Signal transfer unit 52 is connected with the N connector of the port one of programmable power supply 55, main control terminal 53, vector network analyzer 51, port 2, interface board 54 respectively.With the connection of programmable power supply 55 for accessing power supply signal, with the connection of main control terminal 53 for accepting the control of main control terminal 53, be used for transmitting the first original signal to vector network analyzer 51 with the connection of the port one of vector network analyzer 51, be used for receiving the second transmission signal from signal transfer unit 52 with the connection of the port 2 of vector network analyzer 51, be used for transmitting the first original signal to interface board 54 with the connection of the N connector of interface board 54, receive the second transmission signal of transmission after interface board 54 transmits, power supply signal is transmitted to interface board 54, one OOK (On-Off Keying, on-off keying) signal (5MHz), the 2nd OOK (the On-Off Keying that receiving interface plate 54 transmits, on-off keying) signal (10MHz) etc.Signal transfer unit 52 by needing the multiple signal syntheses transferring to interface board 54 to be a road signal, by the connection of the N connector with interface board 54, can transfer to and interface board 54; Multi-channel filter in interface board 54 is divided into multichannel again, so just can solve the problem that interface board 54 interface is inadequate.
The N connector 542 connection signal transfer unit 52 of interface board 54, by the connection of N connector 542 with signal transfer unit 52, the first original signal is accessed from signal transfer unit 52, the second transmission signal is transmitted to signal transfer unit 52, access power supply signal, OOK (5MHz) signal from signal transfer unit 52, transmit the 2nd OOK (10MHz) signal etc. to signal transfer unit 52.The socket 541 of interface board 54 is connected with the port 3 of vector network analyzer 51, port 4, before the control of main control terminal 53, port 3 can be used for the first transmission signal exported after transmitting through interface board 54 to access vector network analyzer 51 after being connected with the socket 542 of interface board 54, port 2 can be used for the second original signal (such as: the 140MHz signal of board for receiving and sending message interface board 54 to be entered) to access vector network analyzer 51 after being connected with the socket 542 of interface board 54.
The schematic diagram of the signal transfer unit 52 that Fig. 5 provides for one embodiment of the invention, as shown in Figure 5, signal transfer unit 52 comprises first interface 521, second interface 522, the 3rd interface 523, the 4th interface 524, first filter 525, second filter 526, the 3rd filter 527, the 4th filter 528, CPU529, switch 5210, wherein, first interface 521 is connected with programmable power supply 55, for accessing power supply, such as-48V power supply; Second interface 522, the 3rd interface 523 are connected with IDU respectively, the original signal that second interface 522 is sent into for accessing IDU, and transfer to the first filter 525, first filter 525 is for carrying out filtering process to the original signal accessed by the second interface 522, transfer to switch 5210 again, 3rd interface 523 is for transmitting transmission signal to IDU, and switch 5210, under the control of main control terminal 53, switches between transmission original signal and reception transmission signal; Second filter 526, for selecting the original signal of access to carry out filtering process to switch 5210, obtains the first original signal, or carries out filtering process to the second transmission signal accessed by the 4th interface 524; CPU529 produces one group of control signal, by certain modulation by this signal madulation on 5MHz, through band pass filter 528, other superfluous signal filterings are exported OOK (5MHz) signal by the 4th interface 524; What return from interface board is the 2nd OOK signal of 10MHz, through the circuit such as demodulation, amplification after arrives CPU529 after being transferred to the unwanted interference signal of low pass filter 527 elimination by the 4th interface 524.
The circuit structure of the signal transfer unit 52 that this embodiment provides can realize: (1)-48V power supply signal passes through, and from then on radiofrequency signal can not be passed through on road.(2) 350MHz or 140MHz signal can pass through, low frequency signal, direct current signal then not by.(3) different signals can be selected to pass through by switch control rule.
First original signal is including, but not limited to waiting the 350MHz signal sending into interface board 54 for IDU, the second original signal is including, but not limited to the 140MHz signal for board for receiving and sending message interface board 54 to be entered.All power supply signals in the socket 541 of interface board 54 can be drawn and receive the performance of testing power supply signal on different equipment.
A kind of test system for interface board provided by the invention, solves the not enough problem of the preset joint of interface board by signal transfer unit.Further, also by main control unit, Automated condtrol is carried out to test process, abandoned original complexity, cannot the shortcoming of volume production, can test interface plate rapidly and efficiently.Further, interface board fixture adopts base, is electrically connected the cooperation of part and compressing structure, is electrically connected part and is directly connected with the preset joint of interface board, do not need to weld N connector on preset joint, avoid many problems that time-consuming, artificial welding causes.And, interface board under the compressing of compressing structure with elastic force probes touch, good probes touch and ground connection ensure that the accuracy of test.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a test system for interface board, is characterized in that, comprises vector network analysis unit and signal transfer unit, wherein,
Described signal transfer unit is used for the first original signal of interface board to be entered to input to vector network analysis unit and interface board respectively; Described signal transfer unit also to transmit the second transmission signal of rear output to the second original signal for accessing described interface board, and described second transmission signal is transferred to described vector network analysis unit;
Described vector network analysis unit is used for accessing the first original signal from described signal transfer unit, access from interface board described interface board to transmit rear output the first transmission signal to described first original signal, and according to described first original signal and described first transmission signal, described interface board is tested; Also for accessing the second original signal of described interface board to be entered, access from described signal transfer unit described interface board to transmit rear output the second transmission signal to described second original signal, and according to described second original signal and described second transmission signal, described interface board is tested.
2. test system for interface board as claimed in claim 1, is characterized in that, also comprise main control unit, for carrying out Automated condtrol to the work of described vector network analysis unit, signal transfer unit and interface board.
3. test system for interface board as claimed in claim 1, is characterized in that, described vector network analysis unit is used for accessing described first transmission signal and described second original signal by the socket of described interface board.
4. test system for interface board as claimed in claim 1, it is characterized in that, described vector network analysis unit is the vector network analyzer with 4 ports, and each port is respectively used to from described first original signal of described signal transfer unit access, from described first transmission signal of described interface board access, from described second original signal of described interface board access, from described second transmission signal of described signal transfer unit access.
5. test system for interface board as claimed in claim 1, is characterized in that, described signal transfer unit is used for, by the same preset joint of described interface board, described first original signal is inputted described interface board, and described second transmission signal of access.
6. test system for interface board as claimed in claim 5, it is characterized in that, described power supply signal also for accessing power supply signal, and is accessed described interface board by the described same preset joint of described interface board by described signal transfer unit.
7. the test system for interface board as described in any one of claims 1 to 6, is characterized in that, also comprises the interface board fixture for fixing described interface board.
8. test system for interface board as claimed in claim 7, it is characterized in that, described interface board fixture comprise for horizontal positioned interface board base, be arranged on described base and the electric connection part that is connected with described signal transfer unit of one end, and for described interface board is pressed in described base, make the preset joint of described interface board and the close-connected compressing structure of described electric connection part.
9. test system for interface board as claimed in claim 8, it is characterized in that, described electric connection part is telescopic probe.
10. test system for interface board as claimed in claim 9, is characterized in that, described base is provided with the through hole coordinated with described probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022767.XA CN103138858B (en) | 2013-01-22 | 2013-01-22 | Test system for interface board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022767.XA CN103138858B (en) | 2013-01-22 | 2013-01-22 | Test system for interface board |
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| CN103138858A CN103138858A (en) | 2013-06-05 |
| CN103138858B true CN103138858B (en) | 2015-01-28 |
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| CN201310022767.XA Expired - Fee Related CN103138858B (en) | 2013-01-22 | 2013-01-22 | Test system for interface board |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104734789A (en) * | 2013-12-19 | 2015-06-24 | 梅尔根电子有限公司 | Measuring method for multi-port radio frequency element |
| CN106645954B (en) * | 2015-11-03 | 2019-02-01 | 沈阳拓荆科技有限公司 | Heating dish impedance measurement tooling and measurement method |
| CN114050876A (en) * | 2021-10-29 | 2022-02-15 | 国网辽宁省电力有限公司丹东供电公司 | Method and device for testing communication equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7151893B2 (en) * | 2002-03-29 | 2006-12-19 | Kddi Corporation | Data transmission system, transmission method of optical network monitor control signal, and node |
| CN101997620A (en) * | 2009-08-20 | 2011-03-30 | 华为技术有限公司 | Device and method for providing test signals |
| CN102130725A (en) * | 2010-01-20 | 2011-07-20 | 中兴通讯股份有限公司 | Test method and system for over-the-air (OTA) performance of multi-aerial system |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7151893B2 (en) * | 2002-03-29 | 2006-12-19 | Kddi Corporation | Data transmission system, transmission method of optical network monitor control signal, and node |
| CN101997620A (en) * | 2009-08-20 | 2011-03-30 | 华为技术有限公司 | Device and method for providing test signals |
| CN102130725A (en) * | 2010-01-20 | 2011-07-20 | 中兴通讯股份有限公司 | Test method and system for over-the-air (OTA) performance of multi-aerial system |
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