CN108595824B - Link signal simulation method and system - Google Patents
Link signal simulation method and system Download PDFInfo
- Publication number
- CN108595824B CN108595824B CN201810358865.3A CN201810358865A CN108595824B CN 108595824 B CN108595824 B CN 108595824B CN 201810358865 A CN201810358865 A CN 201810358865A CN 108595824 B CN108595824 B CN 108595824B
- Authority
- CN
- China
- Prior art keywords
- simulation
- eye
- transition signal
- eye pattern
- pattern
- 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.)
- Active
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 168
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 94
- 238000005259 measurement Methods 0.000 claims abstract description 40
- 238000012937 correction Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000000007 visual effect Effects 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 56
- 238000010586 diagram Methods 0.000 claims description 45
- 238000005070 sampling Methods 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 11
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The application discloses a method and a system for comparing simulation and actual measurement results of signals, wherein the method comprises the following steps: separating a simulation Eye pattern generated by simulation software into a Transition Signal Eye simulation Eye pattern and a Non Transition Signal Eye simulation Eye pattern; the Transition Signal Eye simulated Eye pattern and the Transition Signal Eye actual measurement Eye pattern are compared, and the Non Transition Signal Eye simulated Eye pattern and the Non Transition Signal Eye actual measurement Eye pattern are compared. The system comprises: an eye separation module and a comparison module. Through the method and the system, more visual comparison between the simulated eye pattern and the actually measured eye pattern can be realized, more accurate comparison results can be obtained through the more visual comparison one by one, parameter correction basis can be provided for subsequent projects, and simulation precision is further improved.
Description
Technical Field
The present application relates to the field of signal simulation technologies, and in particular, to a link signal simulation method and system.
Background
In the field of signal simulation, various signal simulation methods are generally included. To ensure that the signal quality is acceptable before and after product design for shipment, the most rudimentary method typically includes two stages: before design, comparing the active simulation eye pattern of the product with an industrial standard under the same BER, and judging that the product is qualified if only the active simulation eye pattern is superior to the industrial standard; after the design is finished, the actual measurement of signals is carried out on the return plate of the product, and the product can be delivered only if the actual measurement eye pattern of the product is superior to the industrial standard and is judged to be qualified.
Theoretically, if the simulation precision is sufficient, the simulation result and the actual measurement result should be identical, but in practice there must be a difference between the two. Therefore, in the signal simulation process, the simulation result is compared with the actual measurement result, so that the simulation parameters are corrected through the actual measurement result, which is a very important problem.
At present, a method for comparing a simulation result and a measured result of a signal, taking a simulation method of a SATA (Serial Advanced Technology Attachment, a Serial hardware driver interface based on an industry standard) signal as an example, generally includes: after the signal is simulated, a simulation result comprising a simulation eye pattern is generated, and the specific simulation eye pattern is shown in figure 1; and then, actually measuring the Signal to generate an actually measured result comprising two actually measured Eye patterns of a Transition Signal Eye and a Non Transition Signal Eye, wherein the actually measured Eye pattern of the Transition Signal Eye is specifically shown in FIG. 2, and the actually measured Eye pattern of the Non Transition Signal Eye is specifically shown in FIG. 3. Finally, a simulated Eye pattern is directly compared with two measured Eye patterns, namely a Transition Signal Eye and a Non Transition Signal Eye.
However, in the existing comparison method, because the simulated Eye pattern is a combined Eye pattern, and the actual measurement Eye pattern is two separated Eye patterns of Transition Signal Eye and Transition Signal Eye, when one combined Eye pattern is compared with the two separated Eye patterns, a large error is easily generated, the comparison is not intuitive enough, and the accuracy of the result obtained by comparison is not high enough, therefore, the simulation parameters cannot be accurately corrected according to the actual measurement Eye pattern, that is, the simulation parameters cannot be accurately corrected according to the actual measurement result, and the simulation accuracy is not high enough.
Disclosure of Invention
The application provides a link signal simulation method and a link signal simulation system, which aim to solve the problems that in the prior art, the comparison between a simulation result and an actual measurement result is not visual enough, and the accuracy of the result obtained by comparison is not high enough, so that the simulation precision is not high enough.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
a link signal simulation method, the method comprising:
determining and collecting a required simulation model according to the project scheme;
establishing a simulation link in simulation software by using the simulation model;
running a simulation program according to the simulation link to obtain a simulation result;
separating a simulation Eye pattern generated by simulation software into a Transition Signal Eye simulation Eye pattern and a Non Transition Signal Eye simulation Eye pattern;
comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern, and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern, wherein the comparison is more intuitive, and is beneficial to obtaining more accurate comparison results, so that parameter correction basis is provided for subsequent items, and the simulation precision is improved;
wherein, the separating of the simulation Eye diagram generated by the simulation software into the Transition Signal Eye simulation Eye diagram and the Non Transition Signal Eye simulation Eye diagram comprises:
exporting a simulation result in the simulation software to a TXT data document according to the received data export instruction;
importing the TXT data document into a Sigtest testing tool according to the received data import instruction;
obtaining test parameters in a Sigtest test tool, wherein the test parameters comprise: sampling the gap and eye pattern template;
and testing the TXT data document in a Sigtest testing tool according to the testing parameters to generate a separated Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram.
Optionally, the sampling gap is calculated from data in a TXT data document.
A link signal emulation system, the system comprising:
the simulation model collection module is used for determining and collecting the needed simulation model according to the project scheme;
the simulation link building module is used for building a simulation link in simulation software by using a simulation model;
the simulation module is used for operating a simulation program according to the simulation link to obtain a simulation result;
the Eye diagram separating module is used for separating a simulation Eye diagram generated by the simulation software into a Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram;
the comparison module is used for comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern, the comparison is more visual, and more accurate comparison results can be obtained, so that parameter correction basis can be provided for subsequent items, and the simulation precision can be improved;
wherein the eye pattern separation module comprises:
the data export module is used for exporting the simulation result in the simulation software to a TXT data document according to the received data export instruction;
the data import module is used for importing the TXT data document into a Sigtest testing tool according to the received data import instruction;
a parameter obtaining module, configured to obtain test parameters in a Sigtest testing tool, where the test parameters include: sampling the gap and eye pattern template;
and the test and Eye pattern generation module is used for testing the TXT data document in a Signal test tool according to the test parameters to generate a separated Transition Signal Eye pattern and a Non Transition Signal Eye pattern.
Optionally, the sampling gap is calculated from data in a TXT data document.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the application provides a link signal simulation method, which comprises the following steps of firstly separating a simulation eye pattern generated by simulation software into two simulation eye patterns: and comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern, and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern. Because this application is separated into two emulation eye diagrams that correspond respectively with actual measurement eye diagram with an eye diagram that simulation software generated, can realize emulation eye diagram and actual measurement eye diagram's more audio-visual contrast, this kind of more audio-visual contrast can acquire more accurate contrast result, is favorable to providing the parameter correction basis for follow-up project, and then improves the simulation precision.
The application also provides a link Signal simulation system which mainly comprises an Eye pattern separation module and a comparison module, wherein a simulation Eye pattern generated by simulation software is separated into a Transition Signal Eye simulation Eye pattern and a Non Transition Signal Eye simulation Eye pattern through the Eye pattern separation module, then the Transition Signal Eye simulation Eye pattern is compared with a Transition Signal Eye actual measurement Eye pattern through the comparison module, and the Non Transition Signal Eye simulation Eye pattern is compared with a Non Transition Signal Eye actual measurement Eye pattern. This application is through the emulation eye-diagram that separates into two independent emulation eye-diagrams, takes two independent emulation eye-diagrams to compare with the actual measurement eye-diagram of two separations respectively for the comparison of emulation result and actual measurement result is more directly perceived convenient, is favorable to acquireing more accurate comparison result, thereby provides the parameter correction basis for follow-up project, and then improves the simulation accuracy.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a prior art simulated eye diagram generated by simulation software;
FIG. 2 is a measured Eye diagram of a Transition Signal Eye obtained by measuring signals actually in the prior art;
FIG. 3 is a Non Transition Signal Eye diagram obtained by actually measuring signals in the prior art;
fig. 4 is a schematic flowchart illustrating a comparison between simulation and actual measurement results of a signal according to an embodiment of the present application;
FIG. 5 is a diagram of a TXT data document in an embodiment of the present application;
fig. 6 is a schematic structural diagram for comparing simulation and actual measurement results of a signal provided in an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
With the development of cloud computing and big data, informatization gradually covers all the fields of society, the network data volume is increased rapidly, and the signal transmission speed is faster and faster. Many original broad signal transmission design rules are not enough to ensure signal quality, so at the initial stage of system design, risk assessment is required according to specific signals and contact conditions, and when the estimated margin is large, low risk is defined. When the evaluation result is close to the signal spec (criterion for judging whether the signal is qualified), a high risk is defined. Simulation confirmation is needed for high-risk items, and then the design is optimized through aspects of hardware, software and the like so as to meet the signal quality requirement.
For a better understanding of the present application, embodiments of the present application are explained in detail below with reference to the accompanying drawings. In the embodiment of the present application, the simulation of the SATA signal is taken as an example for detailed explanation.
Example one
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating comparison between simulation and actual measurement results of signals according to an embodiment of the present application. As can be seen from fig. 4, the comparison method in the present application mainly includes the following steps:
s4: and separating a simulation Eye pattern generated by simulation software into a Transition Signal Eye simulation Eye pattern and a Non Transition Signal Eye simulation Eye pattern.
In this embodiment, a simulated eye pattern is generated by simulation software, and the simulated eye pattern is a synthesized eye pattern. This synthetic simulated eye can be separated into two eye diagrams by step S4: a Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram.
The simulation software may be ADS (Advanced Design System) electronic Design automation software. Taking the SATA Signal simulation as an example, a synthesized simulated Eye pattern is generated by the ADS simulation software, and the synthesized simulated Eye pattern can be separated into a Transition Signal Eye simulated Eye pattern and a Non Transition Signal Eye simulated Eye pattern by step S4.
Specifically, step S4 includes the following process:
s41: and exporting the simulation result in the simulation software to a TXT data document according to the received data export instruction.
Specifically, according to the received data export instruction, the simulation result in the simulation software ADS is exported to the TXT data document as shown in fig. 5 in a graph format manner.
S42: and importing the TXT data document into a Sigtest testing tool according to the received data import instruction.
The Sigtest testing tool is signal integrity analysis software and is data processing software carried by the testing equipment. And importing the TXT data file representing the simulation result into a Sigtest testing tool according to the received data import instruction so as to separate a synthesized simulation eye pattern into two simulation eye patterns.
S43: test parameters are obtained in the Sigtest test tool. Wherein the test parameters include: sampling gaps and eye pattern templates.
After the TXT data file is imported into the Sigtest test tool, parameter setting needs to be performed in the Sigtest test tool, that is, test parameters are obtained.
The sampling interval, also called the sampling period, is defined for signals of different frequencies, and the sampling interval of the signals of different frequencies is different as long as the accuracy required by the current test software is met. For example: the sampling gap set by the SATA signal in the Sigtest test tool is 5.2083 ps.
Wherein the sampling interval is calculated from data in the TXT data file.
The eye pattern template is an industry standard and is a parameter for judging whether the eye pattern is qualified or not. Different signal types differ in their industry specification standards.
After the data is imported into the Sigtest testing tool and the testing parameters are obtained, S44 is executed: and testing the TXT data document in a Signal test tool according to the test parameters to generate a separated Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram.
After the TXT data document is tested, an HTML file is directly generated in a Signal test tool, and the HTML file contains a Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram which are separated.
As can be seen from fig. 4, after the separated Transition Signal Eye simulated Eye pattern and Non Transition Signal Eye simulated Eye pattern are obtained, step S5 is executed: the Transition Signal Eye simulated Eye pattern and the Transition Signal Eye actual measurement Eye pattern are compared, and the Non Transition Signal Eye simulated Eye pattern and the Non Transition Signal Eye actual measurement Eye pattern are compared.
In step S5, the corresponding Transition Signal Eye simulated Eye pattern and the Transition Signal Eye actual measurement Eye pattern are compared with each other, and the corresponding Non Transition Signal Eye simulated Eye pattern and the Non Transition Signal Eye actual measurement Eye pattern are compared with each other. The comparison is more intuitive, and is favorable for obtaining more accurate comparison results, so that parameter correction basis is provided for subsequent projects, and the simulation precision is further improved.
Further, before step S4, the method in this embodiment may further include the following process:
s1: and determining and collecting required simulation models according to the project scheme.
Specifically, according to the project schemes to be implemented on the signals, which simulation models are needed for completing the project schemes are determined, and the needed simulation models are collected for being used by the subsequent building of simulation links. According to different project schemes, a plurality of simulation models are generally required for building a simulation link.
S2: and establishing a simulation link in simulation software by using the simulation model.
S3: and operating a simulation program according to the simulation link to obtain a simulation result.
It is noted that the method in the present application is applicable to link level simulation.
Example two
Referring to fig. 6 on the basis of the embodiments shown in fig. 4 and fig. 5, fig. 6 is a schematic structural diagram for comparing simulation and actual measurement results of signals provided by the embodiments of the present application.
As can be seen from fig. 6, the link signal simulation system in the present application mainly includes: an eye separation module and a comparison module. The Eye diagram separating module is used for separating a simulation Eye diagram generated by simulation software into a Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram; the comparison module is used for comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern. Wherein, the Transition Signal Eye simulation Eye pattern is matched with the Transition Signal Eye actual measurement Eye pattern, and the Non Transition Signal Eye simulation Eye pattern is matched with the Non Transition Signal Eye actual measurement Eye pattern.
Further, the eye diagram comparison module comprises: the device comprises a data export module, a data import module, a parameter acquisition module and a test and eye pattern generation module. The data export module is used for exporting a simulation result in the simulation software to a TXT data document according to the received data export instruction; the data import module is used for importing the TXT data document into a Sigtest testing tool according to the received data import instruction; the parameter acquisition module is used for acquiring test parameters in a Sigtest test tool; the test and Eye pattern generation module is used for testing the TXT data document in a Signal test tool according to the test parameters to generate a separated Transition Signal Eye pattern and a Non Transition Signal Eye pattern.
In this embodiment, the test parameters obtained by the parameter obtaining module mainly include: sampling gaps and eye pattern templates. Wherein the sampling interval is calculated from data in the TXT data file.
Further, the link signal simulation system in this embodiment further includes: the simulation system comprises a simulation model collection module, a simulation link building module and a simulation module. The simulation model collection module is used for determining and collecting a needed simulation model according to the project scheme; the simulation link building module is used for building a simulation link in simulation software by using a simulation model; the simulation module is used for operating a simulation program according to the simulation link to obtain a simulation result.
The link signal simulation method and principle in this embodiment have been explained in detail in the embodiments shown in fig. 4 and fig. 5, and are not described herein again.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A method for link signal simulation, the method comprising:
determining and collecting a required simulation model according to the project scheme;
establishing a simulation link in simulation software by using the simulation model;
running a simulation program according to the simulation link to obtain a simulation result;
separating a simulation Eye pattern generated by simulation software into a Transition Signal Eye simulation Eye pattern and a Non Transition Signal Eye simulation Eye pattern;
comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern, and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern, wherein the comparison is more intuitive, and is beneficial to obtaining more accurate comparison results, so that parameter correction basis is provided for subsequent items, and the simulation precision is improved;
wherein, the separating of the simulation Eye diagram generated by the simulation software into the Transition Signal Eye simulation Eye diagram and the Non Transition Signal Eye simulation Eye diagram comprises:
exporting a simulation result in the simulation software to a TXT data document according to the received data export instruction;
importing the TXT data document into a Sigtest testing tool according to the received data import instruction;
obtaining test parameters in a Sigtest test tool, wherein the test parameters comprise: sampling the gap and eye pattern template;
and testing the TXT data document in a Sigtest testing tool according to the testing parameters to generate a separated Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram.
2. A method for link signal simulation according to claim 1, wherein the sampling interval is calculated from data in a TXT data file.
3. A link signal simulation system, the system comprising:
the simulation model collection module is used for determining and collecting the needed simulation model according to the project scheme;
the simulation link building module is used for building a simulation link in simulation software by using a simulation model;
the simulation module is used for operating a simulation program according to the simulation link to obtain a simulation result;
the Eye diagram separating module is used for separating a simulation Eye diagram generated by the simulation software into a Transition Signal Eye simulation Eye diagram and a Non Transition Signal Eye simulation Eye diagram;
the comparison module is used for comparing the Transition Signal Eye simulation Eye pattern with the Transition Signal Eye actual measurement Eye pattern and comparing the Non Transition Signal Eye simulation Eye pattern with the Non Transition Signal Eye actual measurement Eye pattern, the comparison is more visual, and more accurate comparison results can be obtained, so that parameter correction basis can be provided for subsequent items, and the simulation precision can be improved;
wherein the eye pattern separation module comprises:
the data export module is used for exporting the simulation result in the simulation software to a TXT data document according to the received data export instruction;
the data import module is used for importing the TXT data document into a Sigtest testing tool according to the received data import instruction;
a parameter obtaining module, configured to obtain test parameters in a Sigtest testing tool, where the test parameters include: sampling the gap and eye pattern template;
and the test and Eye pattern generation module is used for testing the TXT data document in a Signal test tool according to the test parameters to generate a separated Transition Signal Eye pattern and a Non Transition Signal Eye pattern.
4. A link signal simulation system according to claim 3, wherein the sampling interval is calculated from data in a TXT data file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358865.3A CN108595824B (en) | 2018-04-20 | 2018-04-20 | Link signal simulation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810358865.3A CN108595824B (en) | 2018-04-20 | 2018-04-20 | Link signal simulation method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108595824A CN108595824A (en) | 2018-09-28 |
| CN108595824B true CN108595824B (en) | 2022-02-18 |
Family
ID=63613606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810358865.3A Active CN108595824B (en) | 2018-04-20 | 2018-04-20 | Link signal simulation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108595824B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117566A (en) * | 2015-09-24 | 2015-12-02 | 浪潮(北京)电子信息产业有限公司 | Method and device of analyzing PCIe eye patterns |
| CN106455307A (en) * | 2016-12-20 | 2017-02-22 | 郑州云海信息技术有限公司 | Wire winding design method and PCB |
| CN106933711A (en) * | 2017-03-13 | 2017-07-07 | 郑州云海信息技术有限公司 | A kind of PCIe3.0 Tx signal method for automatic measurement |
| CN107832174A (en) * | 2017-11-09 | 2018-03-23 | 郑州云海信息技术有限公司 | A kind of closed-Loop Analysis method and system for USB high speed signals |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8266571B2 (en) * | 2008-06-10 | 2012-09-11 | Oasis Tooling, Inc. | Methods and devices for independent evaluation of cell integrity, changes and origin in chip design for production workflow |
-
2018
- 2018-04-20 CN CN201810358865.3A patent/CN108595824B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105117566A (en) * | 2015-09-24 | 2015-12-02 | 浪潮(北京)电子信息产业有限公司 | Method and device of analyzing PCIe eye patterns |
| CN106455307A (en) * | 2016-12-20 | 2017-02-22 | 郑州云海信息技术有限公司 | Wire winding design method and PCB |
| CN106933711A (en) * | 2017-03-13 | 2017-07-07 | 郑州云海信息技术有限公司 | A kind of PCIe3.0 Tx signal method for automatic measurement |
| CN107832174A (en) * | 2017-11-09 | 2018-03-23 | 郑州云海信息技术有限公司 | A kind of closed-Loop Analysis method and system for USB high speed signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108595824A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106529090B (en) | A kind of aerospace electron class Reliability Assessment method | |
| WO2017000424A1 (en) | Protocol detection method and apparatus | |
| CA2353817A1 (en) | Method and apparatus for analyzing measurements | |
| CN106646315B (en) | A kind of Auto-Test System and its test method of digital measuring instruments | |
| CN110072166A (en) | A kind of hardware adjustment method of digital microphone | |
| CN114741691A (en) | Computer software protection system based on cloud computing | |
| CN108595824B (en) | Link signal simulation method and system | |
| CN114326659A (en) | Fault diagnosis system and method for automobile electronic control unit | |
| CN114460439A (en) | Digital integrated circuit test system | |
| KR101282417B1 (en) | Apparatus and method for making CAN data file for test | |
| CN110888011B (en) | In-situ test method and test device based on testability modeling | |
| US9529042B2 (en) | Device for and method of estimating error point in logic diagram | |
| CN110956112B (en) | Novel high-reliability slewing bearing service life assessment method | |
| CN103368786B (en) | The method of testing of CAN bus data and device | |
| CN112034820A (en) | Cloud-based hardware-in-loop system testing method and system and storage medium | |
| CN105891637A (en) | Intelligent substation secondary device testing method and intelligent substation secondary device testing system | |
| CN112558581A (en) | Test method and test device for advanced driving assistance system function | |
| CN112560393B (en) | Comparison verification method and device of EDA software tool | |
| CN114325107A (en) | Method for judging accuracy of harmonic impedance calculation result | |
| CN116068437A (en) | BMS thermal management and SOX test method | |
| CN106019021A (en) | Universal test tool of electronic device test device and test method of universal test tool | |
| CN110686074B (en) | Method, device and system for synchronously recording calibration adjustment value of control unit | |
| CN112084278A (en) | Verification method and device for map data conversion customized product | |
| CN205898913U (en) | Universal tool is used in electronic test equipment test | |
| CN111123004A (en) | Burn-in board test system and burn-in board test method for vehicle |
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 |