Development along with prior art, the power system capacity of high-end transmission system equipment is increasing, the capacity of the intersection class veneer of beared information conversion is also increasing, and the maximum crossing of the list frame of commercial system equipment intersection veneer has been broken through other clog-free crossing of 4096 * 4096VC-4 level at present.
Such system equipment is a core with intersection class veneer, by intersecting veneer, control veneer and various types of traffic veneer, comprise compositions such as branch road class service board, optical interface class service board, data services veneer, intersect veneer by the service bus on the System Backplane and control bus respectively with business board and control single plate interactive information, its system configuration is generally as shown in Figure 1.
Telecom equipment manufacturers need be carried out fault detect to these jumbo intersection veneers of producing before system equipment is offered telecom operators, judge whether veneer work is normal.For above-mentioned jumbo intersection veneer, how to guarantee test mass, improve test speed, how accurately fault location becomes the key that above-mentioned intersection class veneer carries out production test and maintenance.
For the production test of transmission intersection class veneer, mainly be test at service bus.In the prior art, following several testing equipment and method of testing are generally arranged:
The most frequently used testing apparatus is to adopt traditional test instrument such as oscilloscope, universal instrument etc., comes the pin status to the chip that adopts on the tested intersection veneer, perhaps the test point that reserves is in advance measured; Perhaps adopt on-line testing anchor clamps testing equipment to measure.This testing apparatus is simple to operate, cost is low, but defective is tangible, because transmission intersection veneer capacity is big, a large amount of high speed devices that adopt the BGA encapsulation on the veneer, the Bus Speed height can't be reserved test point in advance on tested intersection veneer, therefore oscilloscope, universal instrument probe can't be measured at all, also just can't the quality of veneer be detected.
Moreover, to carry out functional test to above-mentioned intersection class veneer, testing equipment that industry is at present the most frequently used and method of testing are to adopt the system equipment environment at tested intersection veneer place, the test transmission instrument of supporting special use is built complete test platform, is equipped with special system network management again and tests.
This testing equipment comprises by System Backplane, service board and master control veneer and forming generally by system environments, tested intersection veneer, and network management system and special test equipment are formed, as shown in Figure 2.
This test effect is relatively good, can implement comprehensive functional test and performance test to tested intersection class veneer, but tests according to this testing equipment and the method for testing that provide, has tangible following shortcoming:
1) need test macro be carried out full configuration put and the configure dedicated tester according to the design capacity of tested intersection class veneer, increased and carried out the production test operation complexity, cost an arm and a leg batch testing cost height;
2) need network management system hand-manipulated, all service boards are carried out specialized configuration one by one, for example intersect veneer for list frame commercial on a large scale, that have 256 * 256VC-4 rank capacity at present, it needs 16 service boards with 16*16VC-4 rank capacity as the test environment veneer at least.In test process, as requested must these test environment veneers be set to special-purpose test pattern, because the environment veneer is too many, configuration is complicated, makes mistakes easily, and efficient is low, and fault location difficulty height is not suitable for producing in enormous quantities the requirement of test.
Therefore, there is defective in prior art, and awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of device that transmission intersection class veneer is tested, solved the defective of above-mentioned prior art, the device that the present invention proposes does not rely on the system equipment environment, can carry out fault location to the physical path of tested intersection veneer, cost is low, forms simple.
Technical scheme of the present invention comprises:
A kind of device that transmission intersection class veneer is tested, comprise a Main Control Unit, a test clock unit, a display unit, a service bus interface unit, a control bus interface unit, wherein, described device also comprises: a service bus test cell and a control bus test cell;
Described service bus interface unit interconnects between the veneer with tested the intersection respectively by control bus mutually by service bus, described control bus interface unit;
Described service bus test cell is used for service bus is tested, and described control bus test cell is tested control bus;
Described test clock unit is used to service bus test cell and service bus interface unit that the test benchmark clock is provided;
Described Main Control Unit is responsible for service bus test cell, test clock unit, control bus test cell are carried out test configurations and test result information processing, controls display unit simultaneously and shows final test result.
Described device, wherein, described service bus test cell also comprises: service bus Switching Module and test signal after service bus rate conversion module, the conversion produce and detection module, be used to receive test configurations order, and send test result information to Main Control Unit from main control unit.
Described device, wherein, described control bus interface unit is used for carrying out the mutual coupling of circuit interface and the mutual conversion of electric level interface between the control bus test cell of the control bus to be measured of tested intersection veneer and testing apparatus.
Described device, wherein, described service bus test cell is used to produce test signal, by the service bus interface unit, delivers to tested intersection veneer; And detecting signal unit is provided, the service bus signal to be measured that tested intersection veneer is sent here by service bus detects, and realizes the path testing to the service bus to be measured on the tested intersection veneer; After finishing, test will report described Main Control Unit to the test result of service bus signal to be measured.
Described device, wherein, described service bus rate conversion module is used for and will be produced by test signal at testing apparatus and the service bus test signal of the low rate that detection module is produced, switch by the service bus Switching Module after the conversion, be converted to the service bus signal that satisfies the desired two-forty of tested intersection veneer, deliver to tested intersection veneer.
Described device, wherein, the service bus conversion of signals that described service bus rate conversion module is used for the intersection veneer of two-forty to be measured is the test bus signal of the low rate that testing apparatus adopted, switch by the service bus Switching Module after the conversion, the test bus signal of low rate delivered to that test signal produces and detection module in detection module, with the test of realization to tested intersection single board service bus.
A kind of device that transmission intersection class veneer is tested provided by the present invention, whether can test tested intersection veneer easily and quickly normal; And the accurate fault location of energy, be convenient to maintenance; Testing apparatus of the present invention is suitable for the intersection veneer of processing in enormous quantities is carried out production test, and its system forms simply, equipment cost is low, easy to operate.
Embodiment
Below in conjunction with accompanying drawing, each preferred embodiment of present invention will be further described described testing apparatus.
A kind of testing apparatus provided by the present invention at transmission intersection class veneer, its testing apparatus comprises a Main Control Unit, a test clock unit, a display unit, a service bus interface unit, a control bus interface unit, a service bus test cell and a control bus test cell; Wherein, described Main Control Unit, test clock unit, display unit, service bus interface unit, control bus interface unit, service bus test cell and control bus test cell are formed testing apparatus jointly.
The core of the whole testing device that the present invention proposes is described service bus test cell.Described service bus interface unit interconnects between the veneer with tested the intersection respectively by control bus by service bus, control bus interface unit.Described service bus test cell is tested service bus, the control bus test cell is tested control bus, the test clock unit provides the test benchmark clock for service bus test cell and service bus interface unit, Main Control Unit is responsible for service bus test cell, test clock unit, control bus test cell are carried out test configurations and test result information processing, controls display unit simultaneously and shows final test result.
Described service bus test cell, by the service bus Switching Module after service bus rate conversion module, the conversion with test signal produces and detection module is formed, the test configurations order that it receives from main control unit sends test result information to Main Control Unit simultaneously.
As shown in Figure 3, the device that transmission intersection class veneer is tested of the present invention comprises service bus interface unit 201, control bus interface unit 202, control bus test cell 203, test clock unit 204, service bus test cell 206, Main Control Unit 207 and display unit 208.Described service bus interface unit 201, control bus interface unit 202, control bus test cell 203, test clock unit 204, service bus test cell 206, Main Control Unit 207 and display unit 208 have been formed testing apparatus of the present invention jointly.
As shown in Figure 3, the service bus interface unit 201 of testing apparatus of the present invention interconnects by service bus 101 and the tested veneer that intersects, and the control bus interface unit 202 of described testing apparatus interconnects by control bus 102 and the tested veneer that intersects.
The major function of service bus interface unit 201 of the present invention is to realize the mutual coupling of circuit interface between the service bus to be measured of tested intersection veneer and the service bus test cell 206 and the mutual conversion of electric level interface.Service bus interface unit 201 by interconnecting mutually with essentially identical service bus 101 of prior art and the tested veneer that intersects, interconnects with service bus test cell 206 mutually by operational trials bus 205.
Service bus to be measured on the tested intersection veneer of the present invention, after carrying out Circuit Matching, level conversion by service bus interface unit 201, with be input to service bus test cell 206 desired operational trials interfaces and be complementary, the service bus measured signal on the tested intersection veneer is sent to service bus test cell 206 and implements test.
Described service bus test cell 206, after carrying out Circuit Matching, level conversion by service bus interface unit 201, with be input to the tested desired service bus interface of veneer that intersects and be complementary, test signal on the service bus test cell 206 is sent to tested intersection veneer, has realized service bus test cell 206 and the tested information exchange that intersects between the veneer.
Control bus interface unit 202 of the present invention, its major function are to realize carrying out the mutual coupling of circuit interface and the mutual conversion of electric level interface between the control bus test cell 203 of the control bus to be measured of tested intersection veneer and testing apparatus.Described control bus interface unit 202 interconnects with the tested veneer that intersects mutually by control bus 102, interconnects mutually with control bus test cell 203 by the control test bus.
The control bus to be measured 102 of tested intersection veneer, by control bus interface unit 202, be complementary with the interface requirement that is input to the control bus test cell 203 in the testing apparatus, control bus test signal on the tested intersection veneer is sent to control bus test cell 203 and implements test, control bus on the perhaps tested intersection veneer is configured by control bus test cell 203, realizes the simple reset enable control of testing apparatus to tested intersection veneer, power-up initializing control and some complementary functions such as groove position are provided with, the address setting of the setting of plate position and necessity etc.
The major function of control bus test cell 203 of the present invention provides control signal, and by control bus interface unit 202, the control signal to tested intersection veneer need be configured provides needed test configurations; Simultaneously, the control signal that needs to test the control bus of sending here from tested intersection veneer 102 is tested.After test was finished, the test result that control bus test cell 203 will be treated observing and controlling system bus signals reported Main Control Unit 207.
The major function of service bus test cell 206 of the present invention is to produce test signal, by service bus interface unit 201, delivers to tested intersection veneer; Simultaneously, provide detecting signal unit, the service bus signal to be measured that tested intersection veneer is sent here by service bus 101 detects, and realizes the path testing to the service bus to be measured on the tested intersection veneer; Service bus test cell 206 will report Main Control Unit 207 to the test result of service bus signal to be measured after test is finished.
The major function of described test clock unit 204 is to be used to provide tested intersection veneer needed high precision reference clock, as tested intersection veneer needed 622.08mHZ LVDS level clock or 77.76mHZ LVDS level clock, 77.76mHZ Transistor-Transistor Logic level clock or 38.88mHZ Transistor-Transistor Logic level clock, with service bus test cell 206 needed reference clocks, as the needed 77.77mHZ LVDS of service rate bus conversion module level clock or 38.88mHZ LVDS level clock, 39.88mHZ Transistor-Transistor Logic level clock or 19.44mHZ Transistor-Transistor Logic level clock.Simultaneously, provide overall reference clock for described testing apparatus.
The major function of described Main Control Unit 207 is that test clock unit 204 is carried out initialization setting and configuration; Control bus test cell 203 is carried out test configurations, assigns test command, carries out test result reception and other information interaction; Service bus test cell 206 is carried out test configurations, assigns test command, carries out test result reception and other information interaction; By display unit, realize the automatic demonstration of final testing result.
The major function of described display unit 208 is the test result informations that receive from Main Control Unit 207, and test result information is handled, and realizes the automatic demonstration of test result, and to the automatic demonstration of fault location.
Be one of specific implementation example of service bus test cell 206 of the present invention among Fig. 3 as shown in Figure 4.For service bus test cell 206, its service bus Switching Module 302, test signal after by service bus rate conversion module 301, conversion produces and detection module 303 is formed.
Wherein, service bus rate conversion module 301, the operational trials bus 205 of employing two-forty by service bus interface unit 201, realizes that service bus test cell 206 carries out information interaction with tested the intersection between the veneer; Adopt the operational trials bus 304 of low rate, and carry out information interaction between the service bus Switching Module 302 after the conversion.
As shown in Figure 4, service bus rate conversion module 301 of the present invention, its reference clock is provided by test clock module 204, reception is from the test configurations order of main control unit 207, operational trials bus 205 by two-forty interconnects mutually with service bus interface unit 201, and the service bus Switching Module 302 after the operational trials bus 304 by low rate and the conversion interconnects mutually.
The major function that described service bus rate conversion module 301 realizes is with in testing apparatus on the one hand, produce and the service bus test signal of the low rate that detection module 303 is produced by test signal, switch by the service bus Switching Module 302 after the conversion, be converted to the service bus signal that satisfies the desired two-forty of tested intersection veneer, deliver to tested intersection veneer; Be that service bus conversion of signals with the intersection veneer of two-forty to be measured is the test bus signal of the low rate that testing apparatus adopted on the other hand, switch by the service bus Switching Module 302 after the conversion, the test bus signal of low rate delivered to that test signal produces and detection module 303 in detection module, realization is to the test of tested intersection single board service bus.
As shown in Figure 4, service bus Switching Module 302 after the described conversion, its reference clock is provided by test clock module 204, receives the test configurations order from main control unit 207, and is mutually interconnected with service bus rate conversion module 301 by the operational trials bus 304 of low rate.
The major function that service bus Switching Module 302 after the described conversion is realized will be switched from test bus signal tested intersection veneer, that pass through the low rate after service bus rate conversion module 301 transforms, and the detection module that service bus signal to be measured is delivered in test signal generation and the detection module 303 detects.Service bus from tested intersection veneer, after switching through the service bus Switching Module 302 after the conversion, for the test bus signal of any group low rate, can form single channel, the cascade of multichannel head and the tail, the cascade of whole head and the tail etc., thereby realize test and fault location fast.
As shown in Figure 4, test signal of the present invention produces and detection module 303, and its reference clock is provided by test clock module 204, receives the test configurations order from main control unit 207, test result can be reported Main Control Unit 207 simultaneously.
The major function that described test signal produces and detection module 303 is realized provides implements the test signal that test needs to tested intersection single board service bus, as the pseudorandom test signal that adopts the M sequence to produce; Test bus signal to the low rate after switching from tested intersection veneer, through the service bus Switching Module 302 after the conversion carries out signal testing simultaneously, judge whether to meet the demands, after test is finished test result is reported Main Control Unit, automatically test result is shown by display unit again.
To sum up, testing apparatus of the present invention, its system forms simply, equipment cost is lower, easy to operate; Whether adopt the testing apparatus that the present invention realized, it is normal to test tested intersection veneer easily and quickly; Accurately fault location is convenient to maintenance, and is suitable for the intersection veneer of processing in enormous quantities is carried out production test.
Should be understood that above-mentioned description at specific embodiment is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.