CN101127650A - A method and testing backboard for single board production test - Google Patents
A method and testing backboard for single board production test Download PDFInfo
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Abstract
The utility model discloses a method for single-chip board production test, wherein the single-chip board production test is realized by inserting the test single-chip board into a test backboard. The method comprises the steps that: the measured single-chip board produces an excitation signal, which is preferred to be a pseudo random binary sequence bit stream and is sent to the test backboard; the test backboard sends the excitation signal back to the measured single-chip board via a circuit interface loopback; the measured single-chip board checks the sent back excitation signal, and judges whether the measured single-chip board is normal according to the sent back excitation signal. Correspondingly, the utility model also provides a test backboard. Thereby, the utility model needs not to add the hardware cost to the measured single-chip board; the test cost is greatly reduced; the testing efficiency is improved; and the production test requirements needed by mass production are satisfied.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and testing backboard of single board production test.
Background technology
In communication system, need test so that equipment fault is located fast communication equipment.Normal conditions are that the communication equipment test is divided into on-line testing and off-line test, and production test then belongs to off-line test.Described production test mainly is whether the check production and processing exists problems such as defective, components and parts damage.
Most communication equipments in the communication system are made up of veneer, thereby the production test of veneer then becomes first pass of testing of equipment.The production test of veneer mainly utilizes the external business interface of veneer, send into various pumping signals to the veneer input interface, form by the veneer output interface then and send feedback signal, the signal with feedback signal and expectation compares at last, thereby judges whether veneer is normal.
The single board production test method that prior art provides is that other related single-boards and tested single board are built an equipment, by background net management this equipment is configured then, instrument production pumping signal also sends it to this equipment, this equipment generates feedback signal according to configuration after receiving the production pumping signal, and return to instrument, the tester judges according to the feedback signal that instrument received whether this feedback signal is correct, thereby judges whether veneer is normal.
The defective of this technology is: need build equipment, instrument and need the tester to judge whether feedback signal is correct, thereby testing cost height, because the testing cost height can not dispose too many instrument, single board production test efficient is very low when producing in batches like this.
The single board production test method that another kind of prior art provides is the testing apparatus of design specialized, utilizes this special test device to produce pumping signal and receiving feedback signals, judges according to feedback signal whether veneer is normal then.The single-board testing method and apparatus that can provide referring to Chinese patent application 99118268.5, it needs the outside that driving source is provided, whether and it is correct externally to detect response signal, and also increased a CPU (Central Processing Unit for veneer, CPU) handles test, testing apparatus itself is complicated, cost is high, has increased the hardware cost of veneer itself simultaneously.
In summary, existing single board production test method obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
Summary of the invention
At above-mentioned defective, first purpose of the present invention is to provide a kind of method of single board production test, and this method can reduce testing cost, improves testing efficiency, satisfies the required production test demand of producing in batches.
Second purpose of the present invention is to provide a kind of testing backboard of single board production test, and this testing backboard can reduce testing cost, improves testing efficiency, satisfies the required production test demand of producing in batches.
In order to realize above-mentioned first purpose, the invention provides a kind of method of single board production test, realize single board production test by testing single-board being inserted a testing backboard, this method comprises the steps:
A, tested single board produce pumping signal, and send described pumping signal to this testing backboard;
B, described testing backboard are recycled to this tested single board by the line interface loopback with this pumping signal;
C, described tested single board detect the pumping signal of loopback, and judge according to the pumping signal of loopback whether this tested single board is normal.
The method according to this invention, described pumping signal are the pseudo-random binary sequence code stream.
The method according to this invention, described step C further comprises:
C1, tested single board detect the pseudo-random binary sequence code stream of loopback;
Whether C2, the pseudo-random binary sequence code stream of judging described loopback be synchronous with the pseudo-random binary sequence code stream that is produced, if asynchronous, it is undesired then to judge this tested single board, if synchronously, and execution in step C3 then;
C3, judge whether the pseudo-random binary sequence code stream of described loopback error code occurs, if there is error code, it is undesired then to judge this tested single board, otherwise it is normal to judge this tested single board.
The method according to this invention, described steps A further comprises:
A1, judge whether the state of testing backboard is in test mode, if, execution in step A2 then, otherwise carry out the regular traffic flow process;
A2, the port in the tested single board is set to some transmit ports and receiving port respectively, each transmit port is used to send pumping signal, and each receiving port is used to detect the pumping signal of loopback;
A3, on transmit port and receiving port, consistent pseudo-random binary sequence code stream parameter is set;
A4, tested single board be according to the pseudo-random binary sequence code stream parameter generating pseudo-random binary sequence code stream of described transmit port, and send the pseudo-random binary sequence code streams to testing backboard by some transmit ports.
The method according to this invention, described steps A further comprises:
Cross reference in A5, the configuration tested single board between the different port number;
A6, on the receiving port of the transmit port of N port numbers and N+1 port, consistent pseudo-random binary sequence code stream parameter is set;
A7, tested single board be according to the pseudo-random binary sequence code stream parameter generating pseudo-random binary sequence code stream of the transmit port of described N port numbers, and send the pseudo-random binary sequence code stream to testing backboard by the transmit port of N port numbers.
The method according to this invention, described step C further comprises:
C1 ', tested single board detect the pseudo-random binary sequence code stream of loopback by some receiving ports;
Whether C2 ', the pseudo-random binary sequence code stream of judging described loopback by the pseudo-random binary sequence code stream parameter of some receiving ports be synchronous with the pseudo-random binary sequence code stream that is produced, if it is asynchronous, it is undesired then to judge this tested single board, if synchronously, and execution in step C3 ' then;
C3 ', judge whether the pseudo-random binary sequence code stream of described loopback error code occurs, if there is error code, it is undesired then to judge this tested single board, otherwise it is normal to judge this tested single board.
The method according to this invention further comprises after the described step C:
D, described tested single board are returned the testing result display message to testing backboard.
In order to realize above-mentioned second purpose, the invention provides a kind of testing backboard of single board production test, this testing backboard includes some tested board slot positions that are used to insert tested single board; This testing backboard is recycled to tested single board by the line interface loopback on this testing backboard with this pumping signal after receiving the pumping signal of tested single board generation; Described tested single board detects the pumping signal of loopback, and judges according to the pumping signal of loopback whether this tested single board is normal.
According to testing backboard of the present invention, the single-board testing of the tested board slot of each of described testing backboard position is separate, and the interface bus of each tested board slot position is all realized from ring by the line interface loopback on testing backboard.
According to testing backboard of the present invention, described testing backboard is provided with the index signal of test mode and normal condition, when this index signal is designated as test mode during for high level, when this index signal is designated as normal condition during for low level.
Tested single board of the present invention produces pumping signal, this pumping signal is preferably the pseudo-random binary sequence code stream, and to testing backboard transmission pumping signal, testing backboard is recycled to this tested single board by the line interface loopback with this pumping signal then, and tested single board judges according to the pumping signal of loopback whether this tested single board is normal, do not need to increase the hardware cost of tested single board itself, greatly reduce testing cost, improve testing efficiency, thereby satisfied the required production test demand of producing in batches.
Description of drawings
Fig. 1 is a single board production test rear panel module schematic diagram provided by the invention;
Fig. 2 is a single board production test method flow diagram provided by the invention;
Fig. 3 a and Fig. 3 b are the single board production test method flow diagrams that the preferred embodiment of the present invention provides.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Single board production test method and system of the present invention is applicable to the SDH (production test of all kinds of service boards of (Synchronous DigitalHierarchy, SDH (Synchronous Digital Hierarchy)) equipment.
Basic thought of the present invention is: tested single board produces PRBS (Pseudo-Random BinarySequence, pseudo-random binary sequence) code stream, and to testing backboard transmission PRBS code stream, testing backboard is recycled to this tested single board by the line interface loopback with this pseudo-random binary sequence code stream then, and tested single board judges according to the pseudo-random binary sequence code stream of loopback whether this tested single board is normal, thereby realizes the production test of veneer.
Single board production test backboard 100 provided by the invention comprises power supply board slot position 101, clock board slot position 102, master control board slot position 103 and n tested single board groove position 104 as shown in Figure 1.Wherein, described power supply board slot position 101 is used to insert power panel; Described clock board slot position 102 is used to insert clock board; Described master control board slot position 103 is used to insert master control borad; Described tested single board groove position 104 is used to insert tested single board.The quantity of described tested single board groove position 104 can design according to demand, and the single-board testing of each tested single board groove position 104 and other tested single board groove position 104 are separate, are independent of each other; The interface bus of each tested single board groove position 104 is all realized from ring by the line interface loopback at testing backboard; Each tested single board groove position 104 all defines 1 or the several special test mode and the index signal of normal condition.Preferably, when this index signal is designated as test mode during for high level, when this index signal is designated as normal condition during for low level.
After tested single board is inserted the tested single board groove position 104 of testing backboard, under test mode, produce pumping signal, and send this pumping signal to testing backboard, after testing backboard receives this pumping signal, this pumping signal is recycled to tested single board by the line interface loopback on this testing backboard; Described tested single board detects the pumping signal of loopback, and judges according to the pumping signal of loopback whether this tested single board is normal.
Preferably, described pumping signal is the PRBS code stream.The structure of described PRBS code stream can pre-determine, and can repeat to produce and duplicate, but it has the stochastic behaviour of random sequence again, i.e. the not confirmability and the not reproducible realization in advance of sequence in the certain-length scope simultaneously.The sign indicating number position of PRBS code stream is long more, and its stochastic behaviour is obvious more, and it is the periodic sequence code stream.
Present most of SDH business chip is all supported the generation and the detection of PRBS code stream, and the generation of PRBS code stream and detection also can be passed through FPGA (Field Programmable Gate Array, field programmable gate array) and realize.
Among the present invention, the port of tested single board is set to a plurality of transmit ports and receiving port respectively, described transmit port and receiving port can belong to same port numbers, also can belong to different port numbers, but transmit port and receiving port are that i.e. corresponding receiving port of transmit port is set in pairs.Each transmit port is used for producing and sending the PRBS code stream.Each receiving port is used to detect the PRBS code stream of loopback.On transmit port and receiving port, consistent PRBS code stream parameter is set, comprises framing, whether reverse, sign indicating number type etc.Tested single board is according to the PRBS code stream parameter generating PRBS code stream of described transmit port, and sends the PRBS code streams by transmit port to testing backboard 100.Tested single board detects the PRBS code stream of loopback by receiving port, and by the PRBS code stream parameter of receiving port judge the PRBS code stream parameter of described loopback and PRBS code stream that transmit port is produced whether synchronously, error code appears, thereby judge whether tested single board normal.
The present invention goes back the cross reference between the configured port number, by cross reference, can judge whether the interleaving function of tested single board is normal, can also determine further that the transmit port in the port still is that receiving port breaks down.
Fig. 2 is a single board production test method flow diagram provided by the invention, and this method realizes single board production test by testing single-board being inserted a testing backboard, specifically comprises:
Step S201, tested single board produces pumping signal, and sends described pumping signal to testing backboard.
Described pumping signal is preferably the PRBS code stream.
Step S202, testing backboard is recycled to this tested single board by the line interface loopback with pumping signal.
Step S203, this tested single board detects the pumping signal of loopback, and judges according to the pumping signal of loopback whether this tested single board is normal.
Particularly, this step further comprises:
Step S230, tested single board detects the PRBS code stream of loopback.
Step S231, tested single board judges whether the PRBS code stream that PRBS code stream and its of described loopback produced is synchronous, if asynchronous, it is undesired then to judge this tested single board, if synchronously, execution in step S232 then.
Step S232, tested single board judges whether the PRBS code stream of described loopback error code occurs, if exist, it is undesired then to judge this tested single board, otherwise it is normal to judge this tested single board.
The single board production test method that the preferred embodiment of the present invention provides as shown in Figure 4, described veneer is the intersection veneer of SDH equipment, is described in conjunction with single board production test backboard 100 shown in Figure 1, this method specifically comprises:
Step S301, initialization intersection veneer.
Particularly, the veneer that will intersect is that tested single board is inserted testing backboard 100, and initialization intersection veneer.
Step S302 detect to intersect single board state, and judges and intersect veneer whether to be in test mode be whether condition indicative signal is high level, if, execution in step S304 then, otherwise execution in step S303.
Step S303 carries out normal operation flow.
Step S304 closes scrambling, descrambling, frame alignment byte (A1, A2) and error checking byte (B1) and inserts function.
Step S305 is set to some transmit ports and receiving port respectively with the port that intersects in the veneer, and each transmit port is used to send the PRBS code stream that PRBS code stream and each receiving port are used to detect loopback.
Present embodiment, transmit port and receiving port number are M, and occur in pairs.
Step S306 is provided with consistent PRBS code stream parameter on transmit port and receiving port.
In this step, owing to M is arranged to transmit port and receiving port, the PRBS code stream parameter of each transmit port is all different, but with the PRBS code stream parameter of the corresponding receiving port of transmit port must be consistent with the PRBS code stream parameter of transmit port, judge that to be used for follow-up flow process whether synchronously and error code occurs the PRBS code stream.
Step S307, the port numbers that first pair of transmit port and receiving port are set is 0.
Step S308 intersects veneer according to the PRBS code stream parameter generating PRBS code stream of port numbers and its corresponding sending terminal mouth, and sends the PRBS code streams by port numbers corresponding sending terminal mouth to testing single-board 100.
Step S309, testing single-board 100 is recycled to the intersection veneer by the line interface loopback with the PRBS code stream.
Step S310, receiving port detects the PRBS code stream of loopback.
Step S311 by the set PRBS code stream parameter of receiving port, judges whether the PRBS code stream of loopback and the PRBS code stream that transmit port produces be synchronous, if synchronously, and direct execution in step S312, otherwise execution in step S314.
Step S312 judges whether the PRBS code stream of loopback error code occurs, if occur, and direct execution in step S314, otherwise execution in step S313.
Step S313, it is normal to judge this paired transmit port and receiving port, and the record port function is normal, and execution in step S315.
Step S314, it is undesired to judge this paired transmit port and receiving port, and writes down its corresponding port problem is arranged.
Step S315 adds 1 with port numbers.
Whether step S316 judges port numbering greater than M-1, if not, return step S308, otherwise execution in step S317.
Step S317 judges whether the transmit port and the receiving port of all of the port number be normal, if normal, and execution in step S318 then, otherwise execution in step S429.
Step S418, the cross reference between the configuration different port number.
Particularly, the N port is crossed to the N+1 port, the receiving port of the corresponding N+1 port of the transmit port of its N port.Described port numbers N span is between 0～M-1.
By this step, can determine further that transmit port still is that receiving port breaks down.
Step S319 is provided with consistent PRBS code stream parameter on the receiving port of the transmit port of N port and N+1 port.
Step S320 intersects veneer according to the PRBS code stream parameter generating PRBS code stream of port numbers N and its corresponding sending terminal mouth, and sends the PRBS code streams by port numbers N corresponding sending terminal mouth to testing backboard 100.
Particularly, when for the first time carrying out this step, port numbers N is 0, according to the PRBS code stream parameter generating PRBS code stream of port numbers and its corresponding sending terminal mouth, and sends the PRBS code stream by port numbers corresponding sending terminal mouth when carrying out this step afterwards.
Step S321, testing backboard 100 is recycled to the intersection veneer by the line interface loopback with the PRBS code stream.
Step S322, the receiving port of N+1 port detects the PRBS code stream of loopback.
Through one section time-delay, the receiving port of N+1 port detects the PRBS code stream of loopback.
Step S323 by the set PRBS code stream parameter of the receiving port of N+1 port, judges whether the PRBS code stream that the transmit port of the PRBS code stream of loopback and N port produces is synchronous, if synchronously, and direct execution in step S324, otherwise execution in step S326.
Step S324 judges whether the PRBS code stream of loopback error code occurs, if occur, and direct execution in step S326, otherwise execution in step S325.
Step S325, it is normal to judge this paired transmit port and receiving port, and the interleaving function between the record cross-port number is normal, and execution in step S327.
Step S326, it is undesired to judge this paired transmit port and receiving port, and the interleaving function between the record cross-port number has problem.
Step S327 adds 1 with port numbers.
Whether step S328 judges port numbers greater than M-1, if not, return step S320, otherwise execution in step S329.
Step S329, the indicator light of testing backboard 100 show test results and to backstage return recording test result.
In summary, tested single board produces the PRBS code stream, and to testing backboard transmission PRBS code stream, testing backboard is recycled to this tested single board by the line interface loopback with this PRBS code stream then, and tested single board judges according to the PRBS code stream of loopback whether this tested single board is normal, do not need to increase the hardware cost of tested single board itself, greatly reduces testing cost, improve testing efficiency, thereby satisfied the required production test demand of producing in batches.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method for a single board production test is characterized in that, realizes single board production test by testing single-board being inserted a testing backboard, and this method comprises the steps:
A, tested single board produce pumping signal, and send described pumping signal to this testing backboard;
B, described testing backboard are recycled to this tested single board by the line interface loopback with this pumping signal;
C, described tested single board detect the pumping signal of loopback, and judge according to the pumping signal of loopback whether this tested single board is normal.
2. method according to claim 1 is characterized in that, described pumping signal is the pseudo-random binary sequence code stream.
3. method according to claim 2 is characterized in that, described step C further comprises:
C1, tested single board detect the pseudo-random binary sequence code stream of loopback;
Whether C2, the pseudo-random binary sequence code stream of judging described loopback be synchronous with the pseudo-random binary sequence code stream that is produced, if asynchronous, it is undesired then to judge this tested single board, if synchronously, and execution in step C3 then;
C3, judge whether the pseudo-random binary sequence code stream of described loopback error code occurs, if there is error code, it is undesired then to judge this tested single board, otherwise it is normal to judge this tested single board.
4. method according to claim 2 is characterized in that, described steps A further comprises:
A1, judge whether the state of testing backboard is in test mode, if, execution in step A2 then, otherwise carry out the regular traffic flow process;
A2, the port in the tested single board is set to some transmit ports and receiving port respectively, each transmit port is used to send pumping signal, and each receiving port is used to detect the pumping signal of loopback;
A3, on transmit port and receiving port, consistent pseudo-random binary sequence code stream parameter is set;
A4, tested single board be according to the pseudo-random binary sequence code stream parameter generating pseudo-random binary sequence code stream of described transmit port, and send the pseudo-random binary sequence code streams to testing backboard by some transmit ports.
5. method according to claim 4 is characterized in that, described steps A further comprises:
Cross reference in A5, the configuration tested single board between the different port number;
A6, on the receiving port of the transmit port of N port numbers and N+1 port, consistent pseudo-random binary sequence code stream parameter is set;
A7, tested single board be according to the pseudo-random binary sequence code stream parameter generating pseudo-random binary sequence code stream of the transmit port of described N port numbers, and send the pseudo-random binary sequence code stream to testing backboard by the transmit port of N port numbers.
6. method according to claim 5 is characterized in that, described step C further comprises:
C1 ', tested single board detect the pseudo-random binary sequence code stream of loopback by some receiving ports;
Whether C2 ', the pseudo-random binary sequence code stream of judging described loopback by the pseudo-random binary sequence code stream parameter of some receiving ports be synchronous with the pseudo-random binary sequence code stream that is produced, if it is asynchronous, it is undesired then to judge this tested single board, if synchronously, and execution in step C3 ' then;
C3 ', judge whether the pseudo-random binary sequence code stream of described loopback error code occurs, if there is error code, it is undesired then to judge this tested single board, otherwise it is normal to judge this tested single board.
7. method according to claim 1 is characterized in that, further comprises after the described step C:
D, described tested single board are returned the testing result display message to testing backboard.
8. a realization is characterized in that as the testing backboard of claim 1～7 method as described in each this testing backboard includes some tested board slot positions that are used to insert tested single board; This testing backboard is recycled to tested single board by the line interface loopback on this testing backboard with this pumping signal after receiving the pumping signal of tested single board generation; Described tested single board detects the pumping signal of loopback, and judges according to the pumping signal of loopback whether this tested single board is normal.
9. testing backboard according to claim 8 is characterized in that, the single-board testing of the tested board slot of each of described testing backboard position is separate, and the interface bus of each tested board slot position is all realized from ring by the line interface loopback on testing backboard.
10. testing backboard according to claim 9, it is characterized in that, described testing backboard is provided with the index signal of test mode and normal condition, when this index signal is designated as test mode during for high level, when this index signal is designated as normal condition during for low level.
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| CN103631688B (en) * | 2013-12-05 | 2017-03-08 | 迈普通信技术股份有限公司 | A kind of method and system of test interface signal |
| CN105513645A (en) * | 2014-09-24 | 2016-04-20 | 中兴通讯股份有限公司 | Failure detection method and failure detection apparatus for random access memory (RAM) |
| CN105513645B (en) * | 2014-09-24 | 2019-04-23 | 中兴通讯股份有限公司 | The fault detection method and device of random access memory ram |
| WO2016082641A1 (en) * | 2014-11-25 | 2016-06-02 | 中兴通讯股份有限公司 | Method, apparatus and system for detecting joining between board and backplane, board, and backplane |
| CN105095037A (en) * | 2015-09-11 | 2015-11-25 | 北京星网锐捷网络技术有限公司 | Wire card, backboard of wire card and wire card test method |
| CN107819638A (en) * | 2016-09-14 | 2018-03-20 | 中国电信股份有限公司 | Error-code testing method and system and transmission comprehensive network management |
| CN107819638B (en) * | 2016-09-14 | 2020-02-07 | 中国电信股份有限公司 | Error code testing method and system and transmission integrated network management |
| CN113472600A (en) * | 2020-03-31 | 2021-10-01 | 烽火通信科技股份有限公司 | Multi-node server testing method and system |
| CN113472600B (en) * | 2020-03-31 | 2022-09-02 | 烽火通信科技股份有限公司 | Multi-node server testing method and system |
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