CN107807867A - Test the method and device of communication link stability - Google Patents
Test the method and device of communication link stability Download PDFInfo
- Publication number
- CN107807867A CN107807867A CN201710907287.XA CN201710907287A CN107807867A CN 107807867 A CN107807867 A CN 107807867A CN 201710907287 A CN201710907287 A CN 201710907287A CN 107807867 A CN107807867 A CN 107807867A
- Authority
- CN
- China
- Prior art keywords
- communication link
- current field
- stable current
- stability
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test buses, lines or interfaces, e.g. stuck-at or open line faults
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Dc Digital Transmission (AREA)
Abstract
The present invention provides a kind of method and device for testing communication link stability.Methods described includes：Eye pattern test is carried out to communications link signals；When the communications link signals are tested by eye pattern, stability test is carried out to the communication link according to communication link stable current field；The stability of the communication link is judged according to test result.The present invention quantification can weigh the stability of PCIe communication links in the form of parameter, so as to more all-sidedly and accurately reflect the situation of communication link.
Description
Technical field
The present invention relates to signal testing technical field, more particularly to a kind of method and dress for testing communication link stability
Put.
Background technology
In signal server master board hardware design, PCIe (Peripheral Component Interconnect
Express, external equipment high speed interconnection standards) communications link signals stability directly affects the performance of communication link, and it is stable
System require that hardware designer fully pays close attention to link stability first.And in actual compatibility test, generally use pressure
Software by checking whether system has PCIe signals to report an error to weigh the stability of link under communication link high rate communication, this
Kind method of testing does not all provide Uniform provisions in testing time, environmental requirement etc., and there is the judgment criteria of oneself in each manufacturer,
It is difficult to judge the stability of link in actually contrasting.
The content of the invention
The method and device of test communication link stability provided by the invention, quantification it can be weighed in the form of parameter
The stability of PCIe communication links, so as to more all-sidedly and accurately reflect the situation of communication link.
In a first aspect, the present invention provides a kind of method for testing communication link stability, methods described includes：
Eye pattern test is carried out to communications link signals；
When the communications link signals are tested by eye pattern, according to communication link stable current field to the communication link
Carry out stability test；
The stability of the communication link is judged according to test result.
Alternatively, the communication link stable current field includes the stable current field and communication chain of the communications link signals
The stable current field of road adaptation module, wherein, the stable current field of the communications link signals is believed including the communication link
Number eye high standard difference and the wide standard deviation of eye；The stable current field of the communication link adaptation module includes automatic growth control
The standard deviation of module parameter and the standard deviation of decision-feedback module parameter.
Alternatively, it is described that communication link progress stability test is included according to communication link stable current field：Sentence
Whether the stable current field for the communications link signals of breaking and the stable current field of communication link adaptation module are each corresponding to
Threshold value in.
Alternatively, the stability that the communication link is judged according to test result includes：
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are equal
When within each self-corresponding threshold value, judge that the communication link is stable；
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are appointed
Meaning one judges that the communication link is unstable not when within each self-corresponding threshold value.
Second aspect, the present invention provide a kind of device for testing communication link stability, and described device includes：
First test cell, for carrying out eye pattern test to communications link signals；
Second test cell, for when the communications link signals are tested by eye pattern, according to communication link stability
Parameter carries out stability test to the communication link；
Unit is judged, for judging the stability of the communication link according to test result.
Alternatively, the communication link stable current field includes the stable current field and communication chain of the communications link signals
The stable current field of road adaptation module, wherein, the stable current field of the communications link signals is believed including the communication link
Number eye high standard difference and the wide standard deviation of eye；The stable current field of the communication link adaptation module includes automatic growth control
The standard deviation of module parameter and the standard deviation of decision-feedback module parameter.
Alternatively, second test cell, for judging the stable current field and communication chain of the communications link signals
Whether the stable current field of road adaptation module is in each self-corresponding threshold value.
Alternatively, the judge unit, for the stable current field when the communications link signals and the communication link
The stable current field of adaptation module judges that the communication link is stable when within each self-corresponding threshold value；
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are appointed
Meaning one judges that the communication link is unstable not when within each self-corresponding threshold value.
Communications link signals are carried out eye by the method and device of test communication link stability provided in an embodiment of the present invention
Scheme test, eye pattern test is poor further according to communications link signals eye high standard after, and the wide standard deviation of eye and communication link are certainly
The standard deviation of adaptation parameter carries out communication link stability test, is tested when each parameter is in each self-corresponding threshold value logical
Cross, otherwise need correcting again to design.Compared with prior art, the present invention is judged using the amount of jitter in PCIe signal testings
Link stability, quantification weighs the stability of PCIe communication links in the form of parameter, so as to reflection communication more fully hereinafter
Link circuit condition, improve the reliability of computer system.
Brief description of the drawings
Fig. 1 is the flow chart for the method that one embodiment of the invention tests communication link stability；
Fig. 2 is the connection diagram of one embodiment of the invention PCIe signals modules on physical transmission link；
Fig. 3 is the flow chart for the method that another embodiment of the present invention tests communication link stability；
Fig. 4 is the structural representation for the device that one embodiment of the invention tests communication link stability.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The present invention provides a kind of method for testing communication link stability, as shown in figure 1, methods described includes：
S11, eye pattern test is carried out to communications link signals；
S12, when the communications link signals are tested by eye pattern, according to communication link stable current field to the communication
Link carries out stability test；
S13, the stability according to the test result judge communication link.
The test of current most of server master board high speed serial signals is mainly with signal eye diagram, shake and signal phase
Position deviation etc. weighs the quality of communications link signals quality.For example, for PCIe signals, it is general using some pieces of mainboards of extraction
Test signal eye pattern judges the integrality of signal.
As shown in Fig. 2 be the schematic diagram of PCIe signals modules on physical transmission link, wherein, transmitting terminal is balanced
The continuous time linear equalizer of pre-emphasis parameters and receiving terminal in device (TxEq, Transmit Equalizer) (CTLE,
Continuous Time Linear Equalizer) parameter be by software merit rating, and automatic gain controller (AGC,
Automatic Gain Control) and DFF (DFE, Decision Feedback Equalizer) is typically
Using adaptively getting parms.
Eye pattern is carried out to PCIe signals and tests the problems of Signal Integrity that largely can effectively solve in link.
But this method have ignored the signal link stability that the jitter of test result is reflected, institute is in for some eye patterns
When near defined specification, the stability of PCIe communication links just serves vital effect.
Alternatively, the communication link stable current field includes the stable current field and communication chain of the communications link signals
The stable current field of road adaptation module, wherein, the stable current field of the communications link signals is believed including the communication link
Number eye high standard difference and the wide standard deviation of eye；The stable current field of the communication link adaptation module includes automatic growth control
The standard deviation of module parameter and the standard deviation of decision-feedback module parameter.
The stability of stable current field to PCIe communications link signals and PCIe communication link adaptation modules below
Parameter is specifically described.
1st, PCIe signal stabilizations degree parameter：By eye pattern testing tool, a number of pseudorandom pattern is chosen, is chosen more
Block same type mainboard, the multiple high V of measurement signal eyeEyeHightWith the wide T of eyeEyeWidth, then the high average of eye during n eye pattern is testedThe wide average of eyeAverage is respectively：
Then react the parameter eye high standard difference σ of link signal stabilization degreeEHAnd the wide standard deviation sigma of eyeEWRespectively：
2nd, the stable current field of PCIe automatic growth controls module：The purpose of automatic growth control module is signal receiving end
According to the voltage strength for receiving signal come dynamic regulation signal gain so that enter the voltage magnitude of receiving terminal CTLE modules
Relatively stable, the gain parameter of automatic growth control module can reflect the decay situation of outgoing link, the mark of gain parameter
Quasi- difference can reflect stability of the outgoing link in terms of signal energy in signal amplitude, and gain parameter fluctuation range is bigger, says
Bright link attenuation is more unstable, so as to reflect the stability of outgoing link indirectly.The gain parameter of automatic growth control module can be with
Read by instrument, it is assumed that ith is tested, gain parameter αi, then the stable current field of PCIe automatic growth controls module can
To be expressed as：
3rd, the stable current field of decision feedback equalization module：Decision feedback equalization is a kind of nonlinear equalization technology, it
Major technique is that current bit decision threshold is modified by the decision level of adjacent bit, is effectively compensated for so as to realize
The influence of intersymbol interference.The mathematical modeling of n rank tap decision feedback equalization algorithms is：
Wherein, vn(k) be correction after judgement voltage threshold, for the logic state at the k of decision bits position, s (k-i)
The logical value of i bit, c before expression bit position knIt is the correction coefficient of each tap obtained by link training.
{ c after PCIe link is established can be read by tool softwaren, repeatedly establish link in a stable link
After process, each rank { cnParameter is in stable state, pass through { cnParameter stability degree weighs the stabilization of decision feedback equalization module
Degree, then the stability of decision feedback equalization module can be expressed as：
Wherein,Represent that each rank parameter and standard that repeatedly measurement obtains is poor.
In being tested for server master board PCIe, three above stability can be obtained by high-volume test data analysis
Threshold value threshold value, afterwards test in, can according to known threshold value to current test result carry out Stability Judgement, so as to
Predict the stability of PCIe signals in server master board.
With the development of technology, other link circuit self-adapting signal transacting moulds may be increased in PCIe link modules
Block, the stability of link also can be partly weighed using its parameter and standard difference, so as to be protected more fully hereinafter according to many aspects
Demonstrate,prove signal stabilization so that the result of judge is more perfect, accurate and reliable, and can before scale of mass production prediction chains
The reliability on road.
Alternatively, it is described that communication link progress stability test is included according to communication link stable current field：Sentence
Whether the stable current field for the communications link signals of breaking and the stable current field of communication link adaptation module are each corresponding to
Threshold value in.
The stability that the communication link is judged according to test result includes：
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are equal
When within each self-corresponding threshold value, judge that the communication link is stable；
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are appointed
Meaning one judges that the communication link is unstable not when within each self-corresponding threshold value.
Present invention quantification in the form of parameter weighs the stability of PCIe communication links, is mainly surveyed using PCIe signals
Certain amount signal eye high standard is poor in amount, and the standard deviation of the wide standard deviation of eye and link circuit self-adapting parameter weighs PCIe jointly
The stability of communication link.Draw the threshold value of each group parameter come quantitative classification by a large amount of test datas simultaneously, weighed with this
Measure the degree of stability in server master board design.
As shown in figure 3, to test the flow chart of PCIe communication link stability, eye pattern test is carried out to PCIe signals, surveyed
Ping later again to PCIe communication links carry out stability test, test not by when, carry out hardware modifications design, so as to subtract
PCIe problems of Signal Integrity in the production of small batch server master board, and find that signal stabilization is asked in R＆D process
Topic, improve the stability of computer system.
Communications link signals are carried out eye pattern survey by the method for test communication link stability provided in an embodiment of the present invention
Examination, eye pattern test is poor further according to communications link signals eye high standard after, and the wide standard deviation of eye and communication link are adaptive
The standard deviation of parameter carries out communication link stability test, tests and passes through when each parameter is in each self-corresponding threshold value,
Otherwise correcting again is needed to design.Compared with prior art, the present invention judges chain using the amount of jitter in PCIe signal testings
Road stability, quantification weighs the stability of PCIe communication links in the form of parameter, so as to reflect communication chain more fully hereinafter
Road situation, improve the reliability of computer system.
The embodiment of the present invention also provides a kind of device for testing communication link stability, as shown in figure 4, described device bag
Include：
First test cell 11, for carrying out eye pattern test to communications link signals；
Second test cell 12, for when the communications link signals are tested by eye pattern, being stablized according to communication link
Spend parameter and stability test is carried out to the communication link；
Unit 13 is judged, for judging the stability of the communication link according to test result.
Alternatively, the communication link stable current field includes the stable current field and communication chain of the communications link signals
The stable current field of road adaptation module, wherein, the stable current field of the communications link signals is believed including the communication link
Number eye high standard difference and the wide standard deviation of eye；The stable current field of the communication link adaptation module includes automatic growth control
The standard deviation of module parameter and the standard deviation of decision-feedback module parameter.
Alternatively, second test cell 12, for judging stable current field and the communication of the communications link signals
Whether the stable current field of link circuit self-adapting module is in each self-corresponding threshold value.
It is described judge unit 13, for when the stable current field of the communications link signals and the communication link it is adaptive
The stable current field of module judges that the communication link is stable when within each self-corresponding threshold value；
When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are appointed
Meaning one judges that the communication link is unstable not when within each self-corresponding threshold value.
Communications link signals are carried out eye pattern survey by the device of test communication link stability provided in an embodiment of the present invention
Examination, eye pattern test is poor further according to communications link signals eye high standard after, and the wide standard deviation of eye and communication link are adaptive
The standard deviation of parameter carries out communication link stability test, tests and passes through when each parameter is in each self-corresponding threshold value,
Otherwise correcting again is needed to design.Compared with prior art, the present invention judges chain using the amount of jitter in PCIe signal testings
Road stability, quantification weighs the stability of PCIe communication links in the form of parameter, so as to reflect communication chain more fully hereinafter
Road situation, improve the reliability of computer system.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (8)
- A kind of 1. method for testing communication link stability, it is characterised in that methods described includes：Eye pattern test is carried out to communications link signals；When the communications link signals are tested by eye pattern, the communication link is carried out according to communication link stable current field Stability test；The stability of the communication link is judged according to test result.
- 2. according to the method for claim 1, it is characterised in that the communication link stable current field includes the communication chain The stable current field of road signal and the stable current field of communication link adaptation module, wherein, the communications link signals it is steady Surely spending parameter includes the eye high standard difference and the wide standard deviation of eye of the communications link signals；The communication link adaptation module Stable current field includes the standard deviation of automatic growth control module parameter and the standard deviation of decision-feedback module parameter.
- 3. according to the method for claim 2, it is characterised in that it is described according to communication link stable current field to the communication Link, which carries out stability test, to be included：Judge the stable current field and communication link adaptation module of the communications link signals Whether stable current field is in each self-corresponding threshold value.
- 4. according to the method for claim 3, it is characterised in that described that the steady of the communication link is judged according to test result It is qualitative including：When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are each When within self-corresponding threshold value, judge that the communication link is stable；When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are any one It is individual not when within each self-corresponding threshold value, judge that the communication link is unstable.
- 5. a kind of device for testing communication link stability, it is characterised in that described device includes：First test cell, for carrying out eye pattern test to communications link signals；Second test cell, for when the communications link signals are tested by eye pattern, according to communication link stable current field Stability test is carried out to the communication link；Unit is judged, for judging the stability of the communication link according to test result.
- 6. device according to claim 5, it is characterised in that the communication link stable current field includes the communication chain The stable current field of road signal and the stable current field of communication link adaptation module, wherein, the communications link signals it is steady Surely spending parameter includes the eye high standard difference and the wide standard deviation of eye of the communications link signals；The communication link adaptation module Stable current field includes the standard deviation of automatic growth control module parameter and the standard deviation of decision-feedback module parameter.
- 7. device according to claim 6, it is characterised in that second test cell, for judging the communication chain Whether the stable current field of road signal and the stable current field of communication link adaptation module are in each self-corresponding threshold value.
- 8. device according to claim 7, it is characterised in that the judge unit, for when the communications link signals Stable current field and the communication link adaptation module stable current field when within each self-corresponding threshold value, sentence The fixed communication link is stable；When the stable current field of the communications link signals and the stable current field of the communication link adaptation module are any one It is individual not when within each self-corresponding threshold value, judge that the communication link is unstable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907287.XA CN107807867B (en) | 2017-09-29 | 2017-09-29 | Method and device for testing stability of communication link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907287.XA CN107807867B (en) | 2017-09-29 | 2017-09-29 | Method and device for testing stability of communication link |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107807867A true CN107807867A (en) | 2018-03-16 |
| CN107807867B CN107807867B (en) | 2020-09-25 |
Family
ID=61583998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710907287.XA Active CN107807867B (en) | 2017-09-29 | 2017-09-29 | Method and device for testing stability of communication link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107807867B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444716A (en) * | 2018-11-27 | 2019-03-08 | 中科曙光信息产业成都有限公司 | A kind of sweep test structure and method with positioning function |
| CN109600560A (en) * | 2018-12-04 | 2019-04-09 | 中国航空工业集团公司洛阳电光设备研究所 | Cmos image sensor exports high speed serialization LVDS signal calibration method and device |
| CN109766232A (en) * | 2019-01-15 | 2019-05-17 | 郑州云海信息技术有限公司 | A kind of PCIe pressure eye figure detection calibration method |
| WO2022205220A1 (en) * | 2021-03-31 | 2022-10-06 | 华为技术有限公司 | Method for adjusting equalizer parameter, method for sending training sequence, and apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202614A (en) * | 2006-12-11 | 2008-06-18 | 国际商业机器公司 | Systems, arrangements and methods for generating clock sample signal |
| US20150098538A1 (en) * | 2013-10-09 | 2015-04-09 | Qualcomm Incorporated | Specifying a 3-phase or n-phase eye pattern |
| CN104660303A (en) * | 2013-11-25 | 2015-05-27 | 国际商业机器公司 | Method and device for power aware equalization in a serial communications link |
| CN105787178A (en) * | 2016-02-26 | 2016-07-20 | 浪潮(北京)电子信息产业有限公司 | Method and device for testing communication interface specification |
| CN106201795A (en) * | 2016-07-07 | 2016-12-07 | 浪潮电子信息产业股份有限公司 | Method for rapidly detecting stability of data storage link |
| CN106452968A (en) * | 2016-10-24 | 2017-02-22 | 郑州云海信息技术有限公司 | Accelerated detection method for reliability of PCIE (Peripheral Component Interconnect Express) equipment |
-
2017
- 2017-09-29 CN CN201710907287.XA patent/CN107807867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202614A (en) * | 2006-12-11 | 2008-06-18 | 国际商业机器公司 | Systems, arrangements and methods for generating clock sample signal |
| US20150098538A1 (en) * | 2013-10-09 | 2015-04-09 | Qualcomm Incorporated | Specifying a 3-phase or n-phase eye pattern |
| CN104660303A (en) * | 2013-11-25 | 2015-05-27 | 国际商业机器公司 | Method and device for power aware equalization in a serial communications link |
| CN105787178A (en) * | 2016-02-26 | 2016-07-20 | 浪潮(北京)电子信息产业有限公司 | Method and device for testing communication interface specification |
| CN106201795A (en) * | 2016-07-07 | 2016-12-07 | 浪潮电子信息产业股份有限公司 | Method for rapidly detecting stability of data storage link |
| CN106452968A (en) * | 2016-10-24 | 2017-02-22 | 郑州云海信息技术有限公司 | Accelerated detection method for reliability of PCIE (Peripheral Component Interconnect Express) equipment |
Non-Patent Citations (1)
| Title |
|---|
| 付英华等: "《基于Simulink的通信***眼图测试仿真》", 《电子设计工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444716A (en) * | 2018-11-27 | 2019-03-08 | 中科曙光信息产业成都有限公司 | A kind of sweep test structure and method with positioning function |
| CN109600560A (en) * | 2018-12-04 | 2019-04-09 | 中国航空工业集团公司洛阳电光设备研究所 | Cmos image sensor exports high speed serialization LVDS signal calibration method and device |
| CN109766232A (en) * | 2019-01-15 | 2019-05-17 | 郑州云海信息技术有限公司 | A kind of PCIe pressure eye figure detection calibration method |
| CN109766232B (en) * | 2019-01-15 | 2022-02-18 | 郑州云海信息技术有限公司 | PCIe pressure eye pattern test calibration method |
| WO2022205220A1 (en) * | 2021-03-31 | 2022-10-06 | 华为技术有限公司 | Method for adjusting equalizer parameter, method for sending training sequence, and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107807867B (en) | 2020-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107807867A (en) | Test the method and device of communication link stability | |
| US6675328B1 (en) | System and method to determine data throughput in a communication network | |
| US8422567B2 (en) | Signal transmission apparatus and method | |
| CN101233714B (en) | Method and system for jitter compensation in communication system | |
| JP4861717B2 (en) | Test apparatus and test method | |
| WO2001028159A2 (en) | System and method to determine data throughput in a communication network | |
| US11927627B2 (en) | Systems, methods, and devices for high-speed input/output margin testing | |
| CN104750588B (en) | A kind of method for testing pressure based on serial communication | |
| CN106155950B (en) | Parameter processing method and device | |
| US20070041454A1 (en) | Device having communication function, method for automatically adjusting transmitter, system and program | |
| CN105930225B (en) | Self-adaptive link quality optimization method | |
| CN104583988A (en) | Equalization effort-balancing of transmit Finite Impulse Response and receive Linear Equalizer or receive Decision Feedback Equalizer structures in high-speed serial interconnects | |
| CN101771636B (en) | Adaptive equalization device and method | |
| US10352996B2 (en) | Backplane testing system | |
| CN114221719B (en) | Error rate measuring device and error rate measuring method | |
| US20150146768A1 (en) | Power aware equalization in a serial communications link | |
| CN106888060A (en) | The anti-interference method of testing and system of wireless communication module | |
| CN105515893A (en) | Method for determining location of sample point | |
| EP4057573A1 (en) | Link detection method and apparatus, electronic device, and computer-readable medium | |
| CN107465466A (en) | A kind of detection method and device of antenna calibration | |
| CN105979534A (en) | Method and system for detecting interference of LTE on WIFI | |
| US11955778B2 (en) | VCSEL binning for optical interconnects | |
| CN112529209A (en) | Model training method, device and computer readable storage medium | |
| CN103856263B (en) | A kind of method and device testing high-speed link | |
| KR20220063091A (en) | Systems, methods and devices for high-speed input/output margin testing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211011 Address after: 100089 building 36, courtyard 8, Dongbeiwang West Road, Haidian District, Beijing Patentee after: Dawning Information Industry (Beijing) Co.,Ltd. Patentee after: ZHONGKE SUGON INFORMATION INDUSTRY CHENGDU Co.,Ltd. Address before: 100193 No. 36 Building, No. 8 Hospital, Wangxi Road, Haidian District, Beijing Patentee before: Dawning Information Industry (Beijing) Co.,Ltd. |