CN103248527A - Testing tool device, testing system and testing method for Ethernet consistency - Google Patents
Testing tool device, testing system and testing method for Ethernet consistency Download PDFInfo
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- CN103248527A CN103248527A CN2012100302055A CN201210030205A CN103248527A CN 103248527 A CN103248527 A CN 103248527A CN 2012100302055 A CN2012100302055 A CN 2012100302055A CN 201210030205 A CN201210030205 A CN 201210030205A CN 103248527 A CN103248527 A CN 103248527A
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Abstract
The invention relates to an Ethernet testing technology and discloses a testing tool device for Ethernet consistency. The testing tool device solves the problems that the Ethernet consistency testing is low in efficiency and low in integration level in the prior art. The testing tool device adopts the technical scheme that the testing tool device for the Ethernet consistency comprises an Ethernet matching circuit module, a simulation switching module and a control module, wherein the Ethernet matching circuit module is used for accomplishing impedance matching of the Ethernet consistency testing, and transmitting multi-channel Ethernet interface testing signals subjected to the impedance matching to the simulation switching module; the simulation switching module is used for selecting one testing signal from the multi-channel Ethernet interface testing signals subjected to the impedance matching according to a control signal of the control module, and outputting the testing signal to an oscilloscope; and the control module is used for receiving a control instruction of a control console, and controlling the simulation switching module to particularly select the signal according to content of the control instruction. In addition, the invention further discloses a testing system and a testing method for the Ethernet consistency. The testing tool device, the testing system and the testing method are suitable for the consistency testing of Ethernet interfaces of communication equipment.
Description
Technical field
The present invention relates to the ethernet test technology, particularly Ethernet uniformity test fitting device, test macro and method of testing.
Background technology
Ethernet interface is widely used in fields such as switch, router, transmission equipment, PC, along with popularizing and the raising of communication equipment Ethernet interface dense degree, the complexity of environment for use of Ethernet, Ethernet interface is compatible to begin to appear in one's mind out with stability problem, how guarantees that by the Validity Test method it compatiblely also more and more comes more important with stability.
The agreement of Ethernet interface main flow has 100Base-TX, 1000Base-T at present, method at these two kinds of protocol tests is varied, but to guarantee all that nothing more than its electrical characteristic is to meet 802.3 corresponding code requirement, and guarantee that its Ethernet interface satisfies certain error rate requirement.The solution of main flow is to realize by Ethernet uniformity test frock at present, but this frock mainly contains following several shortcoming:
Testing efficiency is low: can only test an Ethernet interface at every turn, need human intervention during test.Have only at communication equipment that this problem is not clearly under the situation of minority Ethernet interface, but along with the market demand, the port dense degree is increasing, manual operation efficient seems more and more lower.
Integrated level is not high: the compatibility of Ethernet interface could guarantee with the test that stability need be carried out a lot of projects, need use multiple frock subtest when test, present Ethernet uniformity test frock can not well realize the function that multiple frock merges.
Also there are not a kind of efficient, automation, reusable Ethernet interface test fixture device, test macro and corresponding method of testing to occur at present.
Summary of the invention
Technical problem to be solved by this invention is: propose a kind of Ethernet uniformity test fitting device, test macro and method of testing, realize efficient, automation, reusable test, solve the problem that Ethernet consistency efficient is low, integrated level is low in the conventional art.
The present invention solves the problems of the technologies described above the scheme that adopts: Ethernet uniformity test fitting device comprises:
Ethernet match circuit module is used for finishing the impedance matching of Ethernet uniformity test, will be transferred to the simulation handover module through the multichannel Ethernet interface test signal after the impedance matching;
The simulation handover module is used for the control signal according to control module, selects a drive test trial signal in through the multichannel Ethernet interface test signal after the impedance matching, outputs to oscilloscope;
Control module is used for receiving the control command of control desk, and simulates handover module according to the content control of control command and specifically select which road signal.
Further, described Ethernet match circuit module comprises at least two Ethernet electricity mouths.
Further, described control module is by universal asynchronous serial interface and console communication.
Further, described simulation handover module mainly comprises the combination of analog switch.
Further, described control module mainly comprises a single-chip microcomputer.
Further, described control module also is used for sending the information that current Ethernet interface test is finished to control desk.
Another object of the present invention is, a kind of Ethernet consistency testing system is provided, comprise: at least two tested Ethernet interfaces, control desk, test fixture device and oscilloscope, described tested Ethernet interface links to each other with the Ethernet match circuit module of test fixture device, and the Ethernet matching module links to each other with the simulation handover module of test fixture device; The control module of test fixture device links to each other with control desk by general UART, and the simulation handover module of test fixture device links to each other with oscilloscope;
Control desk is used for, and after receiving the dependence test parameter information of test fixture device, selects the test protocol type, and sending controling instruction is to the test fixture device; And after judging that current Ethernet interface test finishes, send switching command notice test fixture device Ethernet interface next to be tested;
The test fixture device is used for, and selects current one of them Ethernet interface to be tested to test according to the control command of control desk, and the output test signal is to oscilloscope;
Oscilloscope is used for, and a drive test trial signal of test fixture device output is tested, and shows test results.
Concrete, described test fixture device also is used for finishing the impedance matching of Ethernet uniformity test, selects one road Ethernet interface test signal from the multichannel Ethernet interface test signal after the process impedance matching.
Concrete, described control desk is upper computer software, is embedded in the oscilloscope.
Another object of the present invention is to, propose a kind of Ethernet conformance test method, it may further comprise the steps:
A. test fixture device starting up sends test relevant parameter information to control desk;
B. control desk is selected the test protocol type after receiving the dependence test parameter information of test fixture device, and sending controling instruction is to the test fixture device;
C. the test fixture device is according to control command, from through the multichannel Ethernet interface test signal after the impedance matching, selects a drive test trial signal of a current Ethernet interface correspondence to be tested to test, and the output test signal is to oscilloscope;
D. control desk sends the Ethernet interface that switching command informs that the test fixture device is next to be tested after judging that current Ethernet interface test finishes;
E. the test fixture device selects corresponding Ethernet interface to test according to switching command, the output test signal.
Further, described relevant parameter information comprises this test fixture device supported protocol type and supports the quantity that Ethernet interface switches.
Further, described test protocol type is 100Base-TX agreement or 1000Base-T agreement.
The invention has the beneficial effects as follows: utilize that test fixture device, test macro and method of testing among the present invention can realize efficiently, automation, reusable test, satisfy the demand that the current Ethernet interface performance that has the terminal equipment of numerous Ethernet interfaces is tested fast, effectively the tester is freed from numerous and diverse test operation.
Description of drawings
Fig. 1 is the test fixture apparatus structure block diagram that utilizes the embodiment of the invention;
Fig. 2 is the test macro annexation schematic diagram of the embodiment of the invention;
Fig. 3 is applied to 100base-TX testing principle figure for the test fixture device of the embodiment of the invention;
Fig. 4 is applied to 1000base-T testing principle figure for the test fixture device of the embodiment of the invention;
Fig. 5 is the method for testing flow chart of the embodiment of the invention.
Embodiment
Be to solve the problem that Ethernet uniformity test efficient is low, integrated level is low in the conventional art, the present invention proposes a kind of Ethernet interface test fixture device and method of testing, realizes efficient, automation, reusable test.
The test fixture device of the embodiment of the invention is referring to Fig. 1, and this test fixture device comprises: Ethernet match circuit module, simulation handover module and control module;
Ethernet match circuit module is used for finishing the impedance matching of Ethernet uniformity test, will be transferred to the simulation handover module through the multichannel Ethernet interface test signal after the impedance matching;
The simulation handover module is used for the control signal according to control module, selects a drive test trial signal in through the multichannel Ethernet interface test signal after the impedance matching, outputs to oscilloscope;
Control module is used for receiving the control command of control desk, and simulates handover module according to the content control of control command and specifically select which road signal.
The test macro annexation schematic diagram of the embodiment of the invention is referring to Fig. 2, the test macro of present embodiment comprises: the communication equipment that comprises four tested Ethernet interfaces (Ethernet interface A, Ethernet interface B, Ethernet interface C and Ethernet interface D), test console, test fixture device and a platform test oscilloscope, test fixture device in the native system is made of Ethernet match circuit module, simulation handover module and control module three parts, wherein Ethernet match circuit module connects the simulation handover module, and control module connects the simulation handover module; When this test fixture device used, four Ethernet electricity mouths of communication products linked to each other with Ethernet match circuit module; Control module links to each other with test console by universal asynchronous serial interface UART, and the simulation handover module links to each other with oscilloscope.Test console can be common PC, as long as finish the simple communication with the control module of test fixture device.In the test macro of present embodiment, control desk is used for selecting the test protocol type after receiving the dependence test parameter information of test fixture device, and sending controling instruction is to the test fixture device; And after judging that current Ethernet interface test finishes, send switching command notice test fixture device Ethernet interface next to be tested; The test fixture device is used for selecting current one of them Ethernet interface to be tested to test according to the control command of control desk, and the output test signal is to oscilloscope; Oscilloscope is used for a drive test trial signal of test fixture device output is tested, and shows test results.In the embodiment of the invention, control desk is upper computer software, is embedded in the oscilloscope.
Being applied to respectively with embodiment of the invention test fixture device that 100base-TX test and 1000base-T test below is that example describes:
Referring to Fig. 3, test block diagram when being applied to the 100base-TX test for the test fixture device of the embodiment of the invention, in order to realize that test port 8 selects 1 freely switch, the simulation handover module is to comprise that 1 is that to select 4 tunnel analog switch and 1 be that 4 road differential signals are selected 1 tunnel analog switch to 8 road differential signals, two kinds of analog switch are made up, can realize being selected 1 tunnel function by 8 road differential signals, for example select Ethernet analog switch TS3L500 and the TS5N214 of TI company to make up; Control module then realizes by single-chip microcomputer, because it not needing to realize the logic of too complex, only needs one to switch the control signal of unit with the serial port circuit of console communication, some control simulation, and through assessing, 51 single-chip microcomputers just can satisfy needs of the present invention; The Ethernet build-out resistor then just can be finished by 100 Ohmic resistances coupling, and the later stage can be adjusted its match circuit realization to the compensation of precision of the present invention.
Because the principal element that influences measuring accuracy of the present invention has: frequency response, crosstalk, input voltage, below respectively at every analysis and evaluation that carries out:
(1) frequency response: analog switch is made up of the CMOS pipe usually, no matter its line resistance Ron, parasitic capacitance C how much, have certain frequency response range.The frequency response of analog switch shows as a low pass filter, its cut-off frequency will determine analog switch after being used in combination frequency for what the time waveform undistorted.100base-TX sends the fundamental frequency of waveform about 30MHZ, and by checking analog switch TS3L500 and TS5N214 as can be known, its decay supposes that sending amplitude is 1V about-0.1dB, and 100base-TX decaying to about 11mV through analog switch.In the electrical characteristic of 100base-TX, its amplitude is the waveform of 950mV＜VALUE＜1050mV, and the decay of 11mV can't influence actual test result.
(2) crosstalk: the Ethernet interface signal might be introduced accordingly and crosstalk when the analog switch, and it is crosstalked mainly to come between signal and signal and crosstalks, crosstalks between signal and control signal.Crosstalking along with the frequency that sends waveform is more big between signal and signal, it crosstalks more big; And crosstalking of signal and control signal then only is subjected to the influence of chip internal design.By checking that analog switch as can be known, Ethernet 100,000,000 electricity mouthful 100Base-TX fundamental frequencies are when 30MHZ, its crosstalk that crosstalks has only-80db, suppose that it is 1V that 100Base-TX sends amplitude, it is crosstalked much smaller than 1mV, be the waveform of 950mV＜VALUE＜1050mV for amplitude, can't influence its result.
(3) input voltage: the line resistance Ron of analog switch is wave distortion and overtone " arch-criminal ", and the size of Ron depends on the voltage V that imports waveform
InIf, V
In＜V
+-2 (V
+Be the analog switch supply power voltage), Ron can't cause excessive wave distortion and overtone so, and along with V
InIncrease, Ron also will increase, its influence also will highlight.Because it is 1050mV that 100Base-TX sends the maximum of waveform, by analyzing and calculating, the supply power voltage of analog switch need adopt the 3.3V power supply.
Referring to Fig. 4, the structured flowchart when being applied to the test of 1000Base-T for embodiment of the invention test fixture device.In the application of reality, not only need 100Base-TX is carried out electrical characteristics test, 1000Base-T also there is corresponding demand.The testing requirement of 1000Base-T is more complex than 100Base-TX, and at first requiring at the differential pair of port is four pairs of differential pairs of test, and a pair of unlike 100Base-TX; Secondly, because its speed is much higher than 100Base-TX, therefore require analog switch that better frequency response degree will be arranged, be not only frequency response, it is crosstalked, the distortion factor etc. has corresponding requirement.Present embodiment test fixture device has used three analog switch TS3L500 to make cascade in the selection of simulation handover module, realizes that port 4 selects 1 function; And dispose corresponding control signal by single-chip microcomputer, just can realize the function that it is selected automatically.
Still the Several Factors that influences measuring accuracy is assessed below:
(1) frequency response: the fundamental frequency of Ethernet 1000Base-T agreement is about 60MHZ, and by checking databook, it decays to-0.2dB analog switch TS3L500 through behind the cascade; In the electrical characteristic of 1000Base-T, its amplitude is the waveform of 670.0mV＜VALUE＜820.0mV, decays to about 19mV after as calculated, can't influence actual test result.
(2) crosstalk: by checking analog switch TS3L500 as can be known, the 1000Base-T fundamental frequency is when 60MHZ, and its crosstalk that crosstalks has only-60db, supposes that it is 1V that 1000Base-T sends amplitude, and it is crosstalked less than 1mV, and test result is not had influence.
(3) input voltage: because the peak-to-peak value of 1000Base-T waveform is lower than 100Base-TX, its Ron influence is smaller, therefore still adopts the 3.3V power supply.
Referring to Fig. 5, be a kind of Ethernet interface conformance test method flow chart that the embodiment of the invention provides, this method master is with being applied in the above-mentioned test macro, and it may further comprise the steps:
The present invention's technical scheme required for protection comprises but is not limited only to content in the above-mentioned execution mode; under the situation that does not break away from spiritual essence of the present invention, the content that those skilled in the art put down in writing according to above-mentioned execution mode is equal to replacement all in protection scope of the present invention to what the solution of the present invention was made.
Claims (10)
1. Ethernet uniformity test fitting device is characterized in that, comprising:
Ethernet match circuit module is used for finishing the impedance matching of Ethernet uniformity test, will be transferred to the simulation handover module through the multichannel Ethernet interface test signal after the impedance matching;
The simulation handover module is used for the control signal according to control module, selects a drive test trial signal in through the multichannel Ethernet interface test signal after the impedance matching, outputs to oscilloscope;
Control module is used for receiving the control command of control desk, and simulates handover module according to the content control of control command and specifically select which road signal.
2. Ethernet uniformity test fitting device as claimed in claim 1 is characterized in that described simulation handover module comprises the combination of analog switch.
3. Ethernet uniformity test fitting device as claimed in claim 1 is characterized in that described control module comprises single-chip microcomputer.
4. Ethernet uniformity test fitting device as claimed in claim 1 is characterized in that, described control module also is used for sending the information that current Ethernet interface test is finished to control desk.
5. Ethernet consistency testing system, it is characterized in that, comprise: at least two tested Ethernet interfaces, control desk, test fixture device and oscilloscope, described tested Ethernet interface links to each other with the Ethernet match circuit module of test fixture device, and Ethernet match circuit module links to each other with the simulation handover module of test fixture device; The control module of test fixture device links to each other with control desk by UART, and the simulation handover module of test fixture device links to each other with oscilloscope;
Described control desk is used for selecting the test protocol type after receiving the dependence test parameter information of test fixture device, and sending controling instruction is to the test fixture device; And after judging that current Ethernet interface test finishes, send switching command notice test fixture device Ethernet interface next to be tested;
Described test fixture device is used for selecting current one of them Ethernet interface to be tested to test according to the control command of control desk, and the output test signal is to oscilloscope;
Described oscilloscope is used for a drive test trial signal of test fixture device output is tested, and shows test results.
6. Ethernet consistency testing system as claimed in claim 5, it is characterized in that, described test fixture device also is used for finishing the impedance matching of Ethernet uniformity test, selects one road Ethernet interface test signal from the multichannel Ethernet interface test signal after the process impedance matching.
7. as claim 5 or 6 described Ethernet consistency testing systems, it is characterized in that described control desk is upper computer software, is embedded in the oscilloscope.
8. the Ethernet conformance test method is characterized in that, it may further comprise the steps:
A. test fixture device starting up sends test relevant parameter information to control desk;
B. control desk is selected the test protocol type after receiving the dependence test parameter information of test fixture device, and sending controling instruction is to the test fixture device;
C. the test fixture device from through the multichannel Ethernet interface test signal after the impedance matching, selects the corresponding drive test trial signal of a current Ethernet interface to be tested to test according to control command, and the output test signal is to oscilloscope;
D. control desk sends the Ethernet interface that switching command informs that the test fixture device is next to be tested after judging the information that current Ethernet interface test finishes;
E. the test fixture device selects corresponding Ethernet interface to test according to switching command, the output test signal.
9. Ethernet conformance test method as claimed in claim 8 is characterized in that, described relevant parameter information comprises this test fixture device supported protocol type and supports the quantity that Ethernet interface switches.
10. Ethernet conformance test method as claimed in claim 9 is characterized in that, described test protocol type is 100Base-TX agreement or 1000Base-T agreement.
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| CN104506350A (en) * | 2014-12-18 | 2015-04-08 | 姜斯平 | Gigabit Ethernet switching device |
| CN105205022A (en) * | 2015-09-25 | 2015-12-30 | 瑞斯康达科技发展股份有限公司 | Multi-console-port configuration method and system |
| CN108021119A (en) * | 2016-10-31 | 2018-05-11 | 河南蓝信科技股份有限公司 | A kind of EOAS device detection systems and its method |
| CN108234244A (en) * | 2018-01-05 | 2018-06-29 | 郑州云海信息技术有限公司 | A kind of improved method and system of ethernet test jig |
| CN110798383A (en) * | 2019-11-04 | 2020-02-14 | 中国铁道科学研究院集团有限公司 | Ethernet test system and method |
| CN112350893A (en) * | 2020-10-28 | 2021-02-09 | 太仓市同维电子有限公司 | Ethernet port consistency test method and system |
| CN113300906A (en) * | 2021-04-21 | 2021-08-24 | 深圳市精泰达科技有限公司 | Automatic switching method and device for PCIe test fixture Lane |
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| CN104506350A (en) * | 2014-12-18 | 2015-04-08 | 姜斯平 | Gigabit Ethernet switching device |
| CN105205022A (en) * | 2015-09-25 | 2015-12-30 | 瑞斯康达科技发展股份有限公司 | Multi-console-port configuration method and system |
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| CN112350893A (en) * | 2020-10-28 | 2021-02-09 | 太仓市同维电子有限公司 | Ethernet port consistency test method and system |
| CN113300906A (en) * | 2021-04-21 | 2021-08-24 | 深圳市精泰达科技有限公司 | Automatic switching method and device for PCIe test fixture Lane |
| CN113300906B (en) * | 2021-04-21 | 2022-04-15 | 深圳市精泰达科技有限公司 | Automatic switching method and device for PCIe test fixture Lane |
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Application publication date: 20130814 |