CN103825690B - A kind of multi-channel serial self adaptation error code testing device and method of testing thereof - Google Patents
A kind of multi-channel serial self adaptation error code testing device and method of testing thereof Download PDFInfo
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Abstract
The invention discloses a kind of multi-channel serial self adaptation error code testing device, including FPGA module, interface module, control interface module, output display module and control module, this FPGA module includes pseudo noise code generation module and multi-channel serial self adaptation error code comparing module, this FPGA module connects interface module, control interface module and output display module respectively, and this control module connects control interface module；Wherein, this pseudo noise code generation module is produced multichannel pseudo noise code and is tested to connected external communication link by interface module transmission, this multi-path serial self adaptation error code comparing module receives pseudo noise code signal, and the data received are carried out pseudo noise code code book comparison, export comparison result by output display module.This self adaptation error code testing device simple in construction, it is easily achieved, multichannel real-time error code comparison can be carried out and not by FPGA internal storage resources and caching resource limit, be with good expansibility and versatility.
Description
Technical field
The present invention relates to digital communication system error code testing apparatus field, particularly relate to a kind of for satellite data transmission chain
The test on road provides simple and feasible scheme, for multi-channel serial self adaptation error code testing device and the test thereof of a kind of miniaturization
Method.
Background technology
Error code testing device is the detection device of the digital communication system bit error rate, and its major function is to provide number and passes link biography
Defeated test patterns source, receives number and passes downlink data and compare with test code book, real-time display system error condition.By mistake
Code test is the requisite project in digital communication system debugging or test process, the most general error code testing dress
Put multiple device and the comparison softwares of complexity such as needing independent code source generator, data terminal collecting device and controller, and
And the real-time comparison function of error code that single passage can only be realized.Compared with general error code testing device, the error code of the present invention is surveyed
The real-time comparison function that electricity testing device volume is little, integrated level is high, have multiple channel data error code simultaneously.
General error code testing device is to be stored in advance in ROM by pseudo noise code code book or by real-time for the code source of generation
Caching in memory, until tested communication system downlink data arrive after error code testing device receiving terminal by data with prestore
Or the code source data cached before synchronizes, and show error code result after comparing.
The shortcoming of this kind of method maximum is to need take extra storage resource and realize process complexity, if by pseudorandom
Code code book is stored in advance in ROM, it is necessary first to extra ROM resource storage code book, secondly needs to be previously stored code book in ROM
Full sequence, and the length of code book sequence along with the increase of pseudo noise code primitive polynomial progression be that geometry multiple increases, real
The pseudo noise code engineering that existing progression is the highest is the most complicated, and the storage resource taken is the most.If the code source of generation is delayed in real time
Deposit in memory, on the one hand need to open up cache resources and code source data is stored, on the other hand due to output code source number
It not by with for the moment according to clock and the not homogeneous character receiving data clock, i.e. output code source data clock and reception data clock
Clock produces, and along with the passage of reduced time, data cached existence is overflowed or reads empty hidden danger.
On the basis of both the above method, realize m road code book self adaptation differentiate and comparison function, the logic money that it takies
Source or storage resource and functional realiey complexity are directly proportional to m, the difficulty of error code testing device Function Extension and answering of operation
Miscellaneous degree is the main cause that the most general error code testing device does not possess adaptation function.
Compared with general error code testing device, the error code testing device principle of the present invention is simple, it is easy to accomplish, expansible
Property strong and there is a range of versatility.In the case of realizing identical function, it is not necessary to open up cache resources and storage money
Source, it is only necessary to by the primitive polynomial in amendment code and code book initiation sequence, can realize new pseudo noise code produce and
Comparison function, realizes the code book self adaptation differentiation of m road and comparison function by increasing m road code book criterion mark, decreases function and expand
The difficulty of exhibition and the complexity of realization, adaptability that this error code testing device has had and alterability.
General error code testing device only receives the data of a passage and it is carried out real-time comparison, as realized multichannel
Data receiver or the real-time comparison of error code, then the number of units by increasing error code testing device realizes, and is primarily due to error code
Test device is when testing multichannel and receiving data, and its internal logic resource can not meet the demand being doubled and redoubled.
Compared with general error code testing device, it is not take up inside FPGA during the error code testing device single-path testing of the present invention
Storage resource and cache resources, logical resource exist bigger surplus, the logical resource of a piece of FPGA can meet multiple passage
Self adaptation comparison requirement while data.
Therefore, it is necessary to provide a kind of multi-channel serial self adaptation error code testing dress that can receive and dispatch multiple pseudo noise code simultaneously
Put.
Summary of the invention
In order to overcome the defect of prior art, it is desirable to provide a kind of circuit structure is simple, extensibility strong and accounts for
Few by resource, it is possible to realize multipath reception signal self adaptation simultaneously and differentiate pseudo noise code code book type and carry out Error detection function
Multi-channel serial self adaptation error code testing device.
To achieve these goals, the invention provides a kind of multi-channel serial self adaptation error code testing device, this manifold
Road serial self-adaptable error code testing device includes interface module, FPGA module, control interface module, control module and output
Display module；Wherein, described FPGA module connects described interface module and described control interface module, described interface respectively
Circuit module connects an external communication link, and described control module connects described control interface module, described output display module
Connect described FPGA module；Described control module sends a control signal to described FPGA module by described control interface, described
FPGA module sends multichannel pseudo noise code by described interface module and tests for it to described communication link, and described FPGA
Module receives the test signal of described communication link by described interface module, the described FPGA module test letter to receiving
Number carry out serial self-adaptable error code testing, and test result is sent to described output display module, by described output display mould
Block shows described test result.
It is preferred that described FPGA module includes multichannel pseudo noise code generation module and multi-path serial self adaptation error code comparison mould
Block, described multichannel pseudo noise code generation module and described multi-path serial self adaptation error code comparing module are all by described interface circuit
Module is connected with external communication link；Wherein, produce multichannel pseudo noise code by described multichannel pseudo noise code generation module, pass through
Described multi-path serial self adaptation error code comparing module carries out serial self-adaptable error code testing to the test signal received, and exports survey
Test result.
It is preferred that described serial self-adaptable error code comparing module includes code book clock synchronization unit and self adaptation error code comparison
Unit, described code book clock synchronization unit is connected with each other with described self adaptation error code comparing unit, and described self adaptation error code ratio
Unit is connected described control interface module, and receives control signal.
It is preferred that described code book clock synchronization unit includes a pseudo-noise code generator, occurred by described pseudo noise code
Device produces the pseudo noise code code book identical with the pseudo noise code of described multichannel pseudo noise code generation module generation in real time, thus carries out
Receive data Tong Bu with the clock of comparison code-book data.
It is preferred that described self adaptation error code comparing unit includes self adaptation pseudo noise code judging module and Data Comparison mould
Block；Wherein, described self adaptation pseudo noise code judging module is connect with receiving Data-testing by the initiation sequence of all kinds of code books
Receive the code book type of data, and generate comparison code book in real time；Described Data Comparison module realizes comparison code book by feedback signal
Signal and the data syn-chronization receiving data signal, thus realize code book comparison further.
It is preferred that described multi-channel serial self adaptation error code testing device small volume, this device is made to be easy to carry about with one, and its
Size is 120mm × 100mm × 20mm.
The present invention also proposes a kind of multi-channel serial self adaptation error-code testing method, comprises the steps:
(1) send control signal by described control module, make this multi-channel serial self adaptation error code testing device start；
(2) described multichannel pseudo noise code generation module send multichannel pseudo noise code, and by interface module send to
External communication link is tested for it, and is sent to FPGA module by described interface module by test signal；
(3) described multi-path serial self adaptation error code comparing module is by testing signal described in multipath reception, and to described survey
Trial signal carries out serial self-adaptable error code testing, and by test result output to described output display module；
(4) test result is shown by described output display module.
It is preferred that described step (3) carries out serial self-adaptable error code testing to test signal farther includes pseudo noise code
Judgement and comparing；Wherein, pseudo noise code judgement is by the initial sequence of random sequence according to the different pseudo-random characteristics of code book
Arrange as receiving comparing and the criterion of synchronization, after reception data carry out real-time comparison with multiple code book initiation sequence, data
Selection signal is provided, by selecting the basis of signal behavior pseudorandom number generation after wherein a road code book initiation sequence comparison is consistent
Former multinomial carries out real-time comparison code book and generates, and does not keep data syn-chronization receiving data with the code-book data produced in real time
In the case of, comparison pseudo noise code generation module enters comparison standby mode by reset signal, and under this pattern, comparison code book stops
In current state, real-time reception data are compared with the data under comparison code book current state, and comparison releases feedback the most afterwards
Reset signal, comparison code book continues to generate in real time, and now, comparison code book keeps data syn-chronization with receiving data, thus realizes
Receive the real-time synchronization contrast of data and code-book data.
It is preferred that described step (3) also includes: in real-time synchronization comparison process, if the code-book data sent is unexpected
Switching, then the comparison bit error rate of this multi-channel serial self adaptation error code contrastive test device will be beyond threshold requirement, now, resets
Signal will feed back to the data syn-chronization part of Data Comparison module, receive data and will re-establish synchronization with code book；If now
Receiving and can not set up synchronized relation between data and code book, reset signal will feed back to self adaptation pseudo noise code judging module, right
The signal type receiving data carries out the self adaptation judgement of a new round, thus solves yard source transmission data and switch in real time receiving by mistake
The impact that code test device brings.
Compared with prior art, beneficial effects of the present invention is as follows:
1, the multi-channel serial self adaptation error code testing device of the present invention, it is achieved that after dissimilar pseudo noise code receives
Automatic identification function, and produce corresponding code book in real time and carry out real time contrast, on the basis of the preceding paragraph content, letter greatly
Change the complexity of Function Extension, solved the problem that the scope of application is limited, reach circuit design with amendment simply, easily in fact
Existing beneficial effect.
2, the multi-channel serial self adaptation error code testing device that the present invention provides, its single channel serial self adaptation error code is surveyed
Die trial block is not take up the storage resource within FPGA and cache resources, and need not can realize receiving by external memory circuit
The error code testing of data, in this case, serial self-adaptable error code testing device realizes multiple channel data and receives and self adaptation
Comparison will not be limited by the storage resource within FPGA and cache resources, thus realizes multiple passage with a piece of fpga chip
The real-time comparison function of self adaptation of data, and be widely used in error code debugging or the test process of digital communication system.
3, the present invention provide multi-channel serial self adaptation error code testing device, due to use receive signal clock as than
Code book is processed clock, and solving general error code testing device needs volume in reception data on code source data clock synchronization issue
Outer cache resources or the problem of storage resource；Utilize pseudo noise code primitive polynomial to produce current reception data in real time simultaneously
Comparison code book, thus avoid pre-building of complicated code-book data storehouse, provides the extensibility of code book and solves simply and easily
Certainly approach.
Accompanying drawing explanation
Fig. 1 is the structural representation of the multi-channel serial self adaptation error code testing device that the present invention implements；
Fig. 2 is the serial self-adaptable error code testing flow chart of the single passage that the present invention implements；
Fig. 3 is that the code book clock that the present invention implements synchronizes flow chart；
Fig. 4 is the flow chart of the self adaptation error code comparison that the present invention implements.
Symbol list:
100-multi-channel serial self adaptation error code testing device, 101-circuit interface module, 102-FPGA module, 103-is controlled
Interface module processed, 104-output display module, 105-control module, 106-pseudo noise code generation module, 107-serial self-adaptable
Error code comparing module, 108-code book clock synchronization unit, 109-self adaptation error code comparing unit, 110-pseudo-noise code generator；
200-communication link.
Detailed description of the invention:
See the accompanying drawing illustrating the embodiment of the present invention, the present invention hereafter be will be described in greater detail.But, the present invention can be with
Multi-form, specification etc. realize, and should not be construed as the embodiment by herein proposing and limited.On the contrary, propose these to implement
Example is to reach fully and complete disclosure, and makes the more model understanding the present invention about those skilled in the art completely
Enclose.In these accompanying drawings, for clearly visible, relative size may be zoomed in or out.
Describing, referring initially to Fig. 1, the multi-channel serial self adaptation error code testing device 100 that the present invention implements in detail, this test fills
Put and include interface module 101, FPGA module 102, control interface module 103, control module 105 and output display module
104, this FPGA module 102 connects interface module 101 respectively and controls interface module 103, this FPGA module 102 also by
Interface module 101 connects an external communication link 200；This control module 105 connects control interface module 103, and output is aobvious
Show that module 104 connects FPGA module 102；This control module 105 sends a control signal to by controlling this control interface module 103
FPGA module 102, this FPGA module 102 sends multichannel pseudo noise code to communication link 200 for it by interface module 101
Test, and this FPGA module 102 receive the test signal of communication link 200 (or receiving signal) by interface module 101,
This FPGA module 102 carries out serial self-adaptable error code testing to the test signal received, and by test result (i.e. self adaptation error code
Comparison result) send to output display module 104, this output display module 104 show this test result.
Wherein, this FPGA module 102 includes multichannel pseudo noise code generation module 106 and multi-path serial self adaptation error code comparison
Module 107, this multichannel pseudo noise code generation module 106 and this multi-path serial self adaptation error code comparing module 107 all pass through interface
Circuit module 101 is connected with external communication link 200；Multichannel pseudo noise code is produced by multichannel pseudo noise code generation module 106,
This multichannel pseudo noise code is exported to communication link 200 by interface module 101, this communication link 200 test, and surveys
Trying complete transmission and test signal, this multi-path serial self adaptation error code comparing module 107 receives this survey by interface module 101
Trial signal (or receiving signal), and reception signal is carried out serial self-adaptable error code comparison, and it is aobvious to output to export comparison result
Show module 104, output display module 104 show this comparison result.
As in figure 2 it is shown, the serial self-adaptable error code comparing module 107 of this single passage includes code book clock synchronization unit
108 and self adaptation error code comparing unit 109, this code book clock synchronization unit 108 is mutual with this self adaptation error code comparing unit 109
Connect, and this self adaptation error code comparing unit 109 connects control interface module 103, and receive control signal.
Wherein, as it is shown on figure 3, this code book clock synchronization unit 108 includes a pseudo-noise code generator 110, by this puppet
Random code generator 110 produces the pseudo noise code identical with the pseudo noise code of multichannel pseudo noise code generation module 106 generation in real time
Code book, thus carry out data clock synchronization；Concrete, this code book clock synchronization unit 108 uses and receives clock as comparison code
The process clock that this signal produces, it is achieved comparison code book is Tong Bu with receiving data clock.
And, this self adaptation error code comparing unit 109 includes self adaptation pseudo noise code judging module and Data Comparison module；
This self adaptation pseudo noise code judging module uses the initiation sequence of all kinds of code books and the data receiving signal to compare, thus sentences
The code book type of data is received in disconnecting, and generates contrast code book in real time, realizes comparison codebook signal by feedback signal and receives number
The data syn-chronization of the number of it is believed that, thus realize comparing function by Data Comparison module further.Concrete, this self adaptation pseudorandom
Code judging module according to the different pseudo-random characteristics of code book using the initiation sequence of pseudo-random sequence as receive comparing and with
The data of step, after reception data carry out real-time comparison with multiple code book initiation sequence, receive data initial with a wherein road code book
Provide selection signal after sequence alignment is consistent, compared by the primitive polynomial of this selection signal behavior pseudorandom number generation
Code book generates in real time, in the case of the comparison code-book data receiving data and generation in real time does not keep data syn-chronization, and comparison
Pseudo noise code generation module enters comparison standby mode by reset signal, and under this pattern, comparison code book rests on current state,
Real-time reception data are compared with the data under comparison code book current state, and comparison releases the reset signal of feedback the most afterwards,
Comparison code book continues to generate in real time, now, comparison code book with receive data and keep data syn-chronization, thus realize receiving data with than
The real-time synchronization of code-book data is contrasted.
It addition, in real-time synchronization comparison process, if the code-book data sent switches suddenly, then this manifold of error code comparison
The comparison bit error rate of road serial self-adaptable error code testing device will be beyond threshold requirement, and now, reset signal will feed back to data
The data syn-chronization part of contrast module, receives data and will re-establish synchronization with code book；If now receive data and code book it
Between can not set up synchronized relation, reset signal will feed back to self adaptation pseudo noise code judging module, to receive data class signal
Type carries out the self adaptation of a new round and judges, thus solves yard source transmitting terminal data and switch in real time receiving error code testing device band
The impact come.
In specific implementation process, this multi-channel serial self adaptation error code testing device can provide multiple pseudo noise code defeated
Going out, the multiple pseudo noise code signal received can manually adjust by controlling interface module with the comparison of code book, it is also possible to logical
Cross internal self-reacting device and complete the locking tracking of multiple pseudo noise code signal；This adaptive approach is by receiving data
Realize with the comparison of pseudo noise code initiation sequence receiving the differentiation of the pseudo noise code kind of data, automatically generating corresponding code book,
And carry out data adaptive comparing function.And, the multi-path serial in this multi-channel serial self adaptation error code testing device is adaptive
Answer error code comparing module can be integrated into a module, thus pseudo noise code is carried out error code testing, and other kind pseudorandoms
The test of code has only to a formula (being primitive polynomial) and the initiation sequence of correspondence changing in this block code.
Compared with other error code testing, this multi-channel adaptive error code testing device both need not realize setting up whole contrast codes
This, it is not required that code-book data being cached in real time, the receipts that can achieve a butt joint data carry out error code comparison function.
In specific implementation process, this multi-channel serial self adaptation error code testing device small volume, its size is
120mm × 100mm × 20mm, consequently facilitating the carrying of this multi-channel serial self adaptation error code testing device, but its size
It is not limited with the present embodiment, can be determined according to the integrated level of this error code testing device.
In specific implementation process, the present invention also proposes a kind of multi-channel serial self adaptation error-code testing method, utilizes above-mentioned
Multi-channel serial self adaptation error code testing device carries out error code testing, specifically includes following steps:
(1) send control signal by control module, make this multi-channel serial self adaptation error code testing device start；
(2) multichannel pseudo noise code generation module produces multichannel pseudo noise code, and is sent to outside by interface module
Communication link is tested for it, and is sent to FPGA module by interface module by test signal；
(3) multi-path serial self adaptation error code comparing module tests signal by multipath reception, and goes here and there test signal
Row self adaptation error code testing, and test result is exported to output display module；
(4) test result is shown by output display module.
In specific implementation process, as shown in Figure 4, this step (3) carries out serial self-adaptable error code testing to test signal
Farther include pseudo noise code judgement and comparing；Wherein, pseudo noise code judgement is the pseudo-random characteristics different according to code book
Using the initiation sequence of random sequence as receiving comparing and the criterion of synchronization, receive data and enter with multiple code book initiation sequence
After the real-time comparison of row, data provide selection signal after wherein a road code book initiation sequence comparison is consistent, by selecting signal to select
The primitive polynomial selecting pseudorandom number generation carries out real-time code book generation, does not has with the code-book data produced in real time receiving data
In the case of keeping data syn-chronization, comparison pseudo noise code generation module enters comparison standby mode, this pattern by reset signal
Lower code book rests on current state, and real-time reception data are compared with the data under code book current state, and comparison solves the most afterwards
Except the reset signal of feedback, code book continues to generate in real time, and now, code book keeps data syn-chronization with receiving data, thus realizes connecing
Receive the real-time synchronization contrast of data and code-book data.
And, in real-time synchronization comparison process, if the code-book data sent switches suddenly, the ratio of error code comparison device
Will be beyond threshold requirement to the bit error rate, now, reset signal will feed back to the data syn-chronization part of Data Comparison module, receive number
According to re-establishing synchronization with code book, can not set up synchronized relation if now received between data and code book, reset signal will
Feeding back to self adaptation this judging module of error code, the self adaptation that the data signal type received carries out a new round judges, thus solves
Code source transmission data of having determined switch in real time on receiving the impact that self adaptation error code testing device brings.
In specific implementation process, this interface module can be LVDS transmission circuit, thus realizes multichannel pseudo noise code
The quick transmitting-receiving of signal, this control module can be a control keyboard, by this multi-channel serial self adaptation of this control Keyboard Control
The unlatching of error code testing device and selection send the type in code source, and this output display module can be shown in real time by a display floater
The comparison result of test.This FPGA module completes the generation in yard source, receives data and self adaptation comparison function, at a piece of FPGA core
Realize inside sheet multiple passage real-time adaptive error ratio to and not by chip internal caching or storage resource limit, by multiple
The parallel processing of serial self-adaptable error code comparison, it is achieved multi-channel serial self adaptation error code testing device and test thereof.
By this FPGA module and control circuit and the connection of interface circuit, and by FPGA realize its yard of source signal send and
Receiving, and carry out code book comparison, show comparison result by display floater, therefore, this device has that circuit design is simple, function
Easily extension, the feature of highly versatile, can be widely applied in the error code testing of communication system.And this multi-channel serial self adaptation is by mistake
Code test device, the serial self-adaptable error code testing module of its single passage is not take up the storage resource within FPGA and caching money
Source, it is not necessary to external memory circuit can realize multiple channel data and receive and self adaptation comparison, and will not be by inside FPGA
Storage resource and the restriction of cache resources, thus realize the real-time comparison of self adaptation of multiple channel data with a piece of fpga chip
Function.
But, the multi-channel serial self adaptation error code testing device that the present invention provides, however it is not limited to the present embodiment is limited, should
The data sending terminal of multi-channel serial self adaptation error code testing device 20 kinds of pseudo noise codes of optional output, receiving terminal can enter simultaneously
Row 10 channel serial data real-time adaptive error code comparison function, and export the kind of pseudo noise code and parallel reception passage
To further expand；The size of this this test device with the size of 120mm × 100mm × 20mm of this enforcements proposition is not
Limit, also can reduce according to the degree of integration of chip, consequently facilitating carry.
Obviously, those skilled in the art can carry out various change and the deformation essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and deformation belong to the scope of the claims in the present invention and equivalent technologies thereof
In, then the present invention is also intended to comprise these changes.
Claims (6)
1. a multi-channel serial self adaptation error code testing device, it is characterised in that include interface module, FPGA module,
Control interface module, control module and output display module；Wherein, described FPGA module connects described interface module respectively
With described control interface module, described interface module connects an external communication link, and described control module connects described control
Interface module processed, described output display module connects described FPGA module；
Described control module sends a control signal to described FPGA module by described control interface, and described FPGA module passes through institute
State interface module send multichannel pseudo noise code to described communication link for its test, and described FPGA module pass through described in connect
Mouth circuit module receives the test signal of described communication link, and it is adaptive that described FPGA module carries out serial to the test signal received
Answer error code testing, and test result is sent to described output display module, described output display module show described test
As a result,
Described FPGA module includes multichannel pseudo noise code generation module and multi-path serial self adaptation error code comparing module, described multichannel
Pseudo noise code generation module and described multi-path serial self adaptation error code comparing module are all by described interface module and outside
Communication link connects；Wherein, multichannel pseudo noise code is produced by described multichannel pseudo noise code generation module, by described multichannel string
Row self adaptation error code comparing module carries out serial self-adaptable error code testing to the test signal received, and outputs test result,
Described serial self-adaptable error code comparing module includes code book clock synchronization unit and self adaptation error code comparing unit, described code
This clock synchronization unit is connected with each other with described self adaptation error code comparing unit, and described self adaptation error code comparing unit connects institute
State control interface module, and receive control signal,
Described self adaptation error code comparing unit includes self adaptation pseudo noise code judging module and Data Comparison module；Wherein, described
Self adaptation pseudo noise code judging module is by the initiation sequence of all kinds of code books and the code book receiving Data-testing reception data
Type, and generate comparison code book in real time；Described Data Comparison module realizes comparison codebook signal and reception by a feedback signal
The data syn-chronization of data signal.
Multi-channel serial self adaptation error code testing device the most according to claim 1, it is characterised in that described code book clock
Lock unit includes a pseudo-noise code generator, is produced in real time and described multichannel pseudo noise code by described pseudo-noise code generator
There is the pseudo noise code code book that the pseudo noise code of module generation is identical, thus be received the clock of data and comparison code-book data
Synchronize.
Multi-channel serial self adaptation error code testing device the most according to claim 1, it is characterised in that described multichannel string
The size of row self adaptation error code testing device is 120mm × 100mm × 20mm.
4. a multi-channel serial self adaptation error-code testing method, utilizes multi-channel serial self adaptation as claimed in claim 1
Error testing device is tested, it is characterised in that comprise the steps:
(1) send control signal by described control module, make this multi-channel serial self adaptation error code testing device start；
(2) described multichannel pseudo noise code generation module sends multichannel pseudo noise code, and is sent to outside by interface module
Communication link is tested for it, and is sent to FPGA module by described interface module by test signal；
(3) described multi-path serial self adaptation error code comparing module is by testing signal described in multipath reception, and to described test letter
Number carry out serial self-adaptable error code testing, and by test result output to described output display module；
(4) test result is shown by described output display module.
Multi-channel serial self adaptation error-code testing method the most according to claim 4, it is characterised in that described step (3)
Test signal is carried out serial self-adaptable error code testing and farther includes pseudo noise code judgement and comparing；Wherein, pseudorandom
Code judgement be according to the different pseudo-random characteristics of code book using the initiation sequence of random sequence as receiving comparing and synchronization
Criterion, after reception data carry out real-time comparison with multiple code book initiation sequence, data and a wherein road code book initiation sequence comparison
Provide selection signal after Yi Zhi, carry out real-time comparison code book by the primitive polynomial selecting signal behavior pseudorandom number generation raw
Become, in the case of the code-book data receiving data and generation in real time does not keep data syn-chronization, comparison pseudo noise code generation mould
Block enters comparison standby mode by reset signal, and under this pattern, comparison code book rests on current state, real-time reception data with
Data under comparison code book current state are compared, and comparison releases the reset signal of feedback the most afterwards, and comparison code book continues real
Shi Shengcheng, now, comparison code book with receive data and keep data syn-chronization, thus realize receiving data and code-book data in real time with
Step contrast.
Multi-channel serial self adaptation error-code testing method the most according to claim 4, it is characterised in that described step (3)
Also including: in real-time synchronization comparison process, if the code-book data sent switches suddenly, then this multi-channel serial self adaptation is by mistake
The comparison bit error rate of code contrastive test device will be beyond threshold requirement, and now, reset signal will feed back to Data Comparison module
Data syn-chronization part, receives data and will re-establish synchronization with code book；Can not set up if now received between data and code book
Synchronized relation, reset signal will feed back to self adaptation pseudo noise code judging module, and the signal type receiving data is carried out new one
The self adaptation of wheel judges.
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