CN216774913U - Surge test board integrated with multiple telecommunication terminal interfaces - Google Patents
Surge test board integrated with multiple telecommunication terminal interfaces Download PDFInfo
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- CN216774913U CN216774913U CN202122822308.2U CN202122822308U CN216774913U CN 216774913 U CN216774913 U CN 216774913U CN 202122822308 U CN202122822308 U CN 202122822308U CN 216774913 U CN216774913 U CN 216774913U
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Abstract
The utility model relates to a surge test board integrating various telecommunication terminal interfaces, wherein the test board mainly comprises: the system comprises an Ethernet interface decoupling circuit, an Ethernet interface terminal circuit, a telephone interface decoupling circuit and a telephone interface terminal circuit, wherein the Ethernet interface decoupling circuit is simultaneously connected with a first RJ45 interface and a second RJ45 interface; the Ethernet interface terminal circuit is simultaneously connected with a third RJ45 interface and a fourth RJ45 interface; the telephone interface decoupling circuit is simultaneously connected with the first RJ11 interface and the second RJ11 interface; the telephone interface termination circuit is connected to both the third RJ11 interface and the fourth RJ11 interface. The surge test board integrating multiple telecommunication terminal interfaces solves the problems that the existing telecommunication terminal equipment cannot carry out surge test in a real communication state, simulates the damage condition which can occur after an Ethernet RJ45 interface and a telephone RJ11 interface receive surge interference signals in a communication state, and reduces the repair problem of the telecommunication terminal equipment.
Description
Technical Field
The utility model relates to the technical field of telecommunication terminal equipment, in particular to the technical field of communication lightning protection, and specifically relates to a surge test board integrating various telecommunication terminal interfaces.
Background
Communication equipment, especially telecommunication terminal equipment, such as present PON product especially relates to millions of households, and most of use areas of this kind of equipment are like the family indoor, office building, open-air stadium etc. and some service environment all are directly exposed in the nature environment, are more easily influenced by summer thunderstorm weather.
Telecommunication terminal-like devices, generally installed at the user, provide the functions necessary for the user to implement the access protocol (telecommunication endpoints). It is used to convert the voice, text, data and image information into electric or electromagnetic signals and to restore the received electric or electromagnetic signals into original voice, text, data and image information. Typical terminal devices include a telephone set, a telegraph, a mobile phone, a radio pager, a data terminal, a microcomputer, a facsimile machine, a television set, and the like. Some terminals may also be local or small telecommunication systems themselves, which are accessed as terminal equipment to a public telecommunication network, such as a private branch exchange, ISDN terminal, local area network, office automation system, computer system, etc.
Telecommunication terminal equipment is always in a working state, data transmission conversion is often performed when the equipment is subjected to lightning surge interference, and at present, surge testing on the equipment is performed in an off-line method, for example, a surge testing signal is directly applied to a terminal interface to be tested, but the method cannot truly reflect the surge resistance of the equipment, and is not beneficial to research, development and design of a true lightning protection scheme.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a surge test board which integrates various telecommunication terminal interfaces and can effectively reduce damage and improve product reliability.
In order to achieve the above object, the surge test board integrating multiple telecommunication terminal interfaces of the present invention is specifically as follows:
the surge test board integrated with various telecommunication terminal interfaces is mainly characterized in that the test board mainly comprises:
an ethernet interface decoupling circuit, an ethernet interface termination circuit, a telephone interface decoupling circuit, and a telephone interface termination circuit, wherein,
the Ethernet interface decoupling circuit is simultaneously connected with a first RJ45 interface and a second RJ45 interface;
the Ethernet interface terminal circuit is simultaneously connected with a third RJ45 interface and a fourth RJ45 interface;
the telephone interface decoupling circuit is simultaneously connected with a first RJ11 interface and a second RJ11 interface;
the telephone interface terminal circuit is simultaneously connected with the third RJ11 interface and the fourth RJ11 interface.
Preferably, the ethernet interface decoupling circuit is connected to the RJ45 test interface through the first RJ45 interface and the second RJ45 interface.
Preferably, the first RJ45 interface is connected to an RJ45 test interface for testing telecommunications terminal equipment, the second RJ45 interface is connected to a throughput streamer, and the RJ45 test interface is connected to the throughput streamer.
Preferably, the third RJ45 interface and the fourth RJ45 interface are both connected to the RJ45 interface of the telecommunication terminal device which is not tested.
Preferably, the telephone interface decoupling circuit is connected to an RJ11 test interface through the first RJ11 interface and the second RJ11 interface.
Preferably, the first RJ11 interface is connected to an RJ11 test interface for testing telecommunications terminal equipment, and the second RJ45 interface is connected to a telephone.
Preferably, the third RJ11 interface and the fourth RJ11 interface are both connected to the RJ11 interface of the telecommunication terminal device which is not tested.
Preferably, the RJ11 test interface and the RJ45 test interface are both connected with a first end of a Surge combined wave generator, and a second end of the Surge combined wave generator is grounded.
Preferably, the ethernet interface decoupling circuit is provided with a plurality of non-inductive resistors of 10 Ω, 2515 packaging patches.
Preferably, the ethernet interface terminal circuit is provided with a plurality of non-inductive resistors of 10 Ω, 2515 packaging patches.
More preferably, the telephone interface decoupling circuit is provided with a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first gas discharge tube GDT1 and a second gas discharge tube GDT2, wherein,
the first end of the first resistor R1 is connected with the first end of the first gas discharge tube GDT1, the second end of the first gas discharge tube GDT1 is connected with the first end of the third resistor R3, the second end of the third resistor R3 is connected with the first end of the fourth resistor R4 through the second RJ11 interface, the second end of the fourth resistor R4 is connected with the first end of the second gas discharge tube GDT2, and the second end of the second gas discharge tube GDT2 is connected with the first end of the second resistor R2.
More preferably, the telephone interface terminal circuit is provided with a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third gas discharge tube GDT3, a fourth gas discharge tube GDT4 and a fifth gas discharge tube GDT5, wherein,
a first end of the fifth resistor R5 is connected to a first end of the fourth gas discharge tube GDT4, a second end of the fourth gas discharge tube GDT4 is connected to a first end of the seventh resistor R7, a second end of the seventh resistor R7 is connected to a first end of the eighth resistor R8 through the untested RJ11 interface, a second end of the eighth resistor R8 is connected to a first end of the fifth gas discharge tube GDT5, a second end of the fifth gas discharge tube GDT5 is connected to a first end of the sixth resistor R6, a second end of the sixth resistor R6 is connected to a first end of the third gas discharge tube GDT3, and a second end of the third gas discharge tube GDT3 is connected to a second end of the fifth resistor R5.
The surge test board integrating various telecommunication terminal interfaces is adopted, the surge test board integrating various telecommunication terminal interfaces is utilized to realize the lightning protection of the designed interfaces of the telecommunication terminal equipment, the problem that the existing telecommunication terminal equipment cannot carry out the surge test in a real communication state is solved, the damage condition which is possibly generated after the interface of an Ethernet RJ45 and the interface of a telephone RJ11 receive surge interference signals in the communication state is simulated, a better lightning protection scheme for designing the telecommunication terminal equipment is developed by determining the worst environment range in which a product can be used, the reliability of the development and the product is improved, and the effective technical effect of repairing the telecommunication terminal equipment is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of a surge testing board integrating multiple telecommunication terminal interfaces according to the present invention.
Fig. 2 is a schematic circuit diagram of an ethernet interface decoupling circuit according to the present invention.
Fig. 3 is a schematic circuit diagram of an ethernet interface termination circuit according to the present invention.
Fig. 4 is a schematic circuit diagram of the telephone interface decoupling circuit of the present invention.
Fig. 5 is a schematic circuit diagram of the telephone interface terminal circuit of the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
Before describing in detail embodiments that are in accordance with the present invention, it should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the surge test board integrated with multiple telecommunication terminal interfaces of the present invention mainly includes:
an ethernet interface decoupling circuit, an ethernet interface termination circuit, a telephone interface decoupling circuit, and a telephone interface termination circuit, wherein,
the Ethernet interface decoupling circuit is simultaneously connected with a first RJ45 interface and a second RJ45 interface;
the Ethernet interface terminal circuit is simultaneously connected with a third RJ45 interface and a fourth RJ45 interface;
the telephone interface decoupling circuit is simultaneously connected with a first RJ11 interface and a second RJ11 interface;
the telephone interface terminal circuit is simultaneously connected with the third RJ11 interface and the fourth RJ11 interface.
In a preferred embodiment of the present invention, the ethernet interface decoupling circuit is connected to the RJ45 test interface through the first RJ45 interface and the second RJ45 interface.
As a preferred embodiment of the present invention, the first RJ45 interface is connected to an RJ45 test interface for testing telecommunications terminal equipment, the second RJ45 interface is connected to a throughput streamer, and the RJ45 test interface is connected to the throughput streamer.
As a preferred embodiment of the present invention, the third RJ45 interface and the fourth RJ45 interface are both connected to the RJ45 interface of the telecommunication terminal that is not tested.
In a preferred embodiment of the present invention, the telephone interface decoupling circuit is connected to the RJ11 test interface through the first RJ11 interface and the second RJ11 interface.
In a preferred embodiment of the present invention, the first RJ11 interface is connected to an RJ11 test interface for testing telecommunications terminal equipment, and the second RJ45 interface is connected to a telephone.
As a preferred embodiment of the present invention, the third RJ11 interface and the fourth RJ11 interface are both connected to the RJ11 interface of the telecommunication terminal that is not tested.
In a preferred embodiment of the present invention, the RJ11 test interface and the RJ45 test interface are both connected to a first end of a Surge combined wave generator, and a second end of the Surge combined wave generator is grounded.
As a preferred embodiment of the present invention, the ethernet interface decoupling circuit is provided with a plurality of non-inductive resistors of 10 Ω, 2515 packaging patches.
In a preferred embodiment of the present invention, the ethernet interface termination circuit is provided with a plurality of non-inductive resistors of 10 Ω, 2515 packaging patches.
In a preferred embodiment of the present invention, the telephone interface decoupling circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first gas discharge tube GDT1, and a second gas discharge tube GDT2,
the first end of the first resistor R1 is connected with the first end of the first gas discharge tube GDT1, the second end of the first gas discharge tube GDT1 is connected with the first end of the third resistor R3, the second end of the third resistor R3 is connected with the first end of the fourth resistor R4 through the second RJ11 interface, the second end of the fourth resistor R4 is connected with the first end of the second gas discharge tube GDT2, and the second end of the second gas discharge tube GDT2 is connected with the first end of the second resistor R2.
In a preferred embodiment of the present invention, the telephone interface terminal circuit includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third gas discharge tube GDT3, a fourth gas discharge tube GDT4, and a fifth gas discharge tube GDT5,
a first end of the fifth resistor R5 is connected to a first end of the fourth gas discharge tube GDT4, a second end of the fourth gas discharge tube GDT4 is connected to a first end of the seventh resistor R7, a second end of the seventh resistor R7 is connected to a first end of the eighth resistor R8 through the untested RJ11 interface, a second end of the eighth resistor R8 is connected to a first end of the fifth gas discharge tube GDT5, a second end of the fifth gas discharge tube GDT5 is connected to a first end of the sixth resistor R6, a second end of the sixth resistor R6 is connected to a first end of the third gas discharge tube GDT3, and a second end of the third gas discharge tube GDT3 is connected to a second end of the fifth resistor R5.
In practical application, the Ethernet interface decoupling circuit adopts 10 ohm, 2515 packaging patch non-inductive resistor;
the 2515 package patch mentioned above is actually a package specification, and a method for representing the package size and length of the resistor, is a general method for representing the size of the patch device such as a resistor and a capacitor in the industry, and does not represent the specific resistance value of the device.
The Ethernet interface terminal circuit adopts 10 ohm, 2515 packaging patch non-inductive resistor;
the telephone interface decoupling circuits R1 and R2 adopt 200 ohms, R3 and R4 adopt 33K ohms, 2515 packaging patch non-inductive resistance, and GDT1 and GDT2 adopt BF151N type gas discharge tubes.
The telephone interface terminal circuits R5 and R6 adopt 200 ohms, R7 and R8 adopt 33K ohms, 2515 packaging patch non-inductive resistance, and GDT3, GDT4 and GDT5 adopt BF151N type gas discharge tubes.
Referring to fig. 2, the RJ45 test interface is connected to the ethernet interface decoupling circuit, the ethernet interface decoupling circuit is connected to the first RJ45 interface and the second RJ45 interface, the first RJ45 interface is connected to the RJ45 interface of the telecommunication terminal device for testing, the second RJ45 interface is connected to the throughput streaming instrument, at this time, the RJ45 interface of the telecommunication terminal device for testing and the throughput streaming instrument perform analog data transmission, and the surge test signal directly interferes with the RJ45 interface of the telecommunication terminal device for testing through the RJ45 test interface, which reflects the real situation that the ethernet interface is subjected to surge interference in the working state of the telecommunication terminal device.
Referring to fig. 3, the ethernet interface terminal circuit is connected to the untested RJ45 interface of the telecommunication terminal device, in such a manner, the degree of interference of the untested ethernet interface by the tested ethernet interface is considered, and the degree of isolation between a plurality of identical ethernet interfaces on the terminal device is considered, so as to prevent mutual interference.
Referring to fig. 4, the RJ11 test interface is connected to the telephone interface decoupling circuit, the telephone interface decoupling circuit is connected to the first RJ11 interface and the second RJ11 interface, the first RJ11 interface is connected to the RJ11 interface of the telecommunication terminal device for testing, the second RJ11 interface is connected to the telephone, the RJ11 interface of the telecommunication terminal device for testing and the telephone perform analog communication at this time, and the surge test signal directly interferes with the RJ11 interface of the testing through the RJ11 test interface, which reflects the real situation that the telephone interface suffers surge interference in the working state of the telecommunication terminal device.
Referring to fig. 5, the telephone interface terminal circuit is connected to the untested RJ11 interface of the telecommunication terminal, in such a way that the degree of interference of the untested telephone interface with the telephone interface under test is taken into account, and the degree of isolation between a plurality of identical telephone interfaces on the terminal is taken into account, so as to prevent mutual interference.
In practical application, the surge decoupling circuit is specifically as follows: the coupling network is used for transmitting surge signals of the combined wave generator (lightning surge generator) to the EUT, limiting interference noise from the combined wave generator from damaging ports and equipment except a tested port and reducing the influence on surge waveforms. The decoupling network has the function of providing enough decoupling impedance for the surge wave and avoiding the adverse effect of the surge signal entering the non-test port. In addition, other equipment ports connected to the same equipment may contain lightning protection devices, and the lightning protection devices on non-tested equipment can prevent the application of surge on the EUT and influence the surge test result under the condition of not using a decoupling network.
The lightning surge protection test of the interface of the telecommunication terminal equipment which can be carried out by the design is as follows:
1 ethernet interface, lightning waveform (10/700us), 8-wire 40 ohm resistance, positive and negative wire pair to ground.
2 combined waves (1.2/50us, 8/20us), 8-wire 42 ohm resistance and 8-wire 200 ohm resistance, positive and negative wire to ground.
The surge test board integrating various telecommunication terminal interfaces is adopted, the surge test board integrating various telecommunication terminal interfaces is utilized to realize the lightning protection of the designed interfaces of the telecommunication terminal equipment, the problem that the existing telecommunication terminal equipment cannot carry out the surge test in a real communication state is solved, the damage condition which is possibly generated after the interface of an Ethernet RJ45 and the interface of a telephone RJ11 receive surge interference signals in the communication state is simulated, a better lightning protection scheme for designing the telecommunication terminal equipment is developed by determining the worst environment range in which a product can be used, the reliability of the development and the product is improved, and the effective technical effect of repairing the telecommunication terminal equipment is reduced.
In this specification, the utility model has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the utility model. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (12)
1. A surge test board integrated with a plurality of telecommunication terminal interfaces is characterized in that the test board mainly comprises:
an ethernet interface decoupling circuit, an ethernet interface termination circuit, a telephone interface decoupling circuit, and a telephone interface termination circuit, wherein,
the Ethernet interface decoupling circuit is simultaneously connected with a first RJ45 interface and a second RJ45 interface;
the Ethernet interface terminal circuit is simultaneously connected with a third RJ45 interface and a fourth RJ45 interface;
the telephone interface decoupling circuit is simultaneously connected with a first RJ11 interface and a second RJ11 interface;
the telephone interface terminal circuit is simultaneously connected with the third RJ11 interface and the fourth RJ11 interface.
2. The surge test board according to claim 1, wherein said ethernet interface decoupling circuit is connected to RJ45 test interfaces through said first RJ45 interface and said second RJ45 interface.
3. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 2, wherein said first RJ45 interface is connected with RJ45 testing interface for telecommunication terminal equipment testing, said second RJ45 interface is connected with throughput streaming instrument, and said RJ45 testing interface is connected with throughput streaming instrument.
4. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 3, wherein said third RJ45 interface and said fourth RJ45 interface are connected to the RJ45 interface of the telecommunication terminal equipment which is not tested.
5. The surge test board with integrated multiple telecommunication terminal interfaces as claimed in claim 2, wherein said phone interface decoupling circuit is connected to RJ11 test interface through said first RJ11 interface and said second RJ11 interface.
6. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 5, wherein said first RJ11 interface is connected with RJ11 testing interface for testing telecommunication terminal equipment, and said second RJ45 interface is connected with telephone.
7. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 3, wherein said third RJ11 interface and said fourth RJ11 interface are connected to the RJ11 interface of the telecommunication terminal equipment which is not tested.
8. The Surge test board integrated with multiple telecommunication terminal interfaces as claimed in claim 5, wherein said RJ11 test interface and RJ45 test interface are connected to a first end of a Surge combined wave generator, and a second end of said Surge combined wave generator is grounded.
9. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 1, wherein said ethernet interface decoupling circuit is provided with a plurality of 10 Ω, 2515 package patch non-inductive resistors.
10. The surge testing board integrated with multiple telecommunication terminal interfaces as claimed in claim 1, wherein said ethernet interface terminal circuit is provided with a plurality of 10 Ω, 2515 package patch non-inductive resistors.
11. The surge testing board with integrated multiple telecommunication terminal interfaces as claimed in claim 1, wherein a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first gas discharge tube GDT1 and a second gas discharge tube GDT2 are provided in the telephone interface decoupling circuit, wherein,
the first end of the first resistor R1 is connected with the first end of the first gas discharge tube GDT1, the second end of the first gas discharge tube GDT1 is connected with the first end of the third resistor R3, the second end of the third resistor R3 is connected with the first end of the fourth resistor R4 through the second RJ11 interface, the second end of the fourth resistor R4 is connected with the first end of the second gas discharge tube GDT2, and the second end of the second gas discharge tube GDT2 is connected with the first end of the second resistor R2.
12. The surge test board with integrated multiple telecommunication terminal interfaces as claimed in claim 7, wherein a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third gas discharge tube GDT3, a fourth gas discharge tube GDT4 and a fifth gas discharge tube GDT5 are provided in said telephone interface terminal circuit,
a first end of the fifth resistor R5 is connected to a first end of the fourth gas discharge tube GDT4, a second end of the fourth gas discharge tube GDT4 is connected to a first end of the seventh resistor R7, a second end of the seventh resistor R7 is connected to a first end of the eighth resistor R8 through the untested RJ11 interface, a second end of the eighth resistor R8 is connected to a first end of the fifth gas discharge tube GDT5, a second end of the fifth gas discharge tube GDT5 is connected to a first end of the sixth resistor R6, a second end of the sixth resistor R6 is connected to a first end of the third gas discharge tube GDT3, and a second end of the third gas discharge tube GDT3 is connected to a second end of the fifth resistor R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122822308.2U CN216774913U (en) | 2021-11-17 | 2021-11-17 | Surge test board integrated with multiple telecommunication terminal interfaces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122822308.2U CN216774913U (en) | 2021-11-17 | 2021-11-17 | Surge test board integrated with multiple telecommunication terminal interfaces |
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| CN216774913U true CN216774913U (en) | 2022-06-17 |
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| CN202122822308.2U Active CN216774913U (en) | 2021-11-17 | 2021-11-17 | Surge test board integrated with multiple telecommunication terminal interfaces |
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