CN111552600A - Signal testing method, system, device and readable storage medium - Google Patents
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- 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
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- 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
- G06F11/26—Functional testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The application discloses a signal testing method, which comprises the following steps: starting a script program to control a CPU (central processing unit) of a corresponding board card so as to enable the power consumption of the CPU to dynamically change; carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result; the first test result includes eye height test data and eye width test data. The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization. Correspondingly, the application also discloses a signal testing system, a signal testing device and a readable storage medium with the same beneficial effects.
Description
Technical Field
The present invention relates to the field of circuit design and test, and in particular, to a signal testing method, system, device, and readable storage medium.
Background
With the rapid development of computer technology, the data transmission rate of PCIe (peripheral component interconnect express) signals as a main interface of peripheral interconnection is increasing, and the risk of signal integrity of a complex board-level system is also increasing. Therefore, PCIe signal integrity test has become an essential item for high-end electronic products such as servers or switches. In the design process of a Printed Circuit Board (PCB), due to the high density and limited wiring space of the Board card, PCIe signal routing inevitably approaches or passes through a switching power supply area, and the adverse effect of power supply noise on signals needs to be considered in the practical process.
The current PCIe test methods are two, one is based on PCIe signal integrity test performed by a CPU in an ideal or low power consumption state, the method cannot cover the influence of power supply dynamic noise on signal quality, and design risks can be identified only through later performance test, so that the development cycle of a product is prolonged; the other testing method is to simply test the influence of power supply noise on the PCIe signal, and the method simulates the dynamic load of a CPU based on VRTT and measures and tests the power supply signal coupled to the PCIe wiring. However, the unit noise is basically equivalent on the differential signal line P, N, and after the differential operation is performed on the receiving end, the actual influence of the power supply noise on the PCIe signal becomes insignificant, so this method also cannot directly represent the strength of the power supply noise influence on the PCIe signal.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a signal testing method, system, device and readable storage medium capable of testing the influence of dynamic noise of a power supply on a signal. The specific scheme is as follows:
a signal testing method, comprising:
starting a script program to control a CPU (central processing unit) of a corresponding board card so as to enable the power consumption of the CPU to dynamically change;
carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
Preferably, the signal testing method further includes:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
Preferably, after the obtaining of the corresponding first test result, the method further includes:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
Preferably, the starting of the script program to control the CPU of the corresponding board card to make the power consumption of the CPU dynamically change includes:
starting a script program;
and controlling the CPU of the corresponding board card through the script program to enable the power consumption of the CPU to be dynamically changed and output the dynamic noise of the switching power supply so as to achieve the limit test environment corresponding to the board card.
Preferably, the sending end test specifically includes:
acquiring a sending end test result of the board card in the current CPU state through an oscilloscope and a test fixture;
the receiving end test specifically comprises the following steps:
and acquiring a receiving end test result of the board card in the current CPU state by using the gold mark card and the XDP jig.
Preferably, the signal to be tested corresponding to the signal testing method is a PCIe signal or a UPI signal.
Correspondingly, the invention also discloses a signal testing system, which comprises:
the script module is used for starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to be dynamically changed;
the test module is used for carrying out sending end test and receiving end test on the board card in the current CPU state and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
Correspondingly, the invention also discloses a signal testing device, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of the signal testing method as claimed in any one of the above when executing the computer program.
Accordingly, the present invention also discloses a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the signal testing method according to any of the above.
The application discloses a signal testing method, which comprises the following steps: starting a script program to control a CPU (central processing unit) of a corresponding board card so as to enable the power consumption of the CPU to dynamically change; carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result; the first test result includes eye height test data and eye width test data. The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart illustrating steps of a signal testing method according to an embodiment of the present invention;
FIG. 2 is a schematic test eye diagram of a first test result in an embodiment of the present invention;
FIG. 3 is a diagram of a test environment for a sender test according to an embodiment of the present invention;
FIG. 4 is a diagram of a test environment for a receiver test according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a signal testing system according to an embodiment of the present invention;
fig. 6 is a structural distribution diagram of a signal testing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
The current PCIe test methods have two types, one is based on PCIe signal integrity test performed by a CPU in an ideal or low power consumption state, the other is based on the method of simply testing the influence of power supply noise on a PCIe signal, and the two types of methods cannot directly represent the strength of the influence of the power supply noise of the PCIe signal. The test environment of power dynamic noise is provided for the board card signal, the influence of the power dynamic noise on the signal quality can be obviously reflected by the first test result obtained under the test environment, and the defects of the prior art are overcome.
The embodiment of the invention discloses a signal testing method, which is shown in figure 1 and comprises the following steps:
s1: starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to dynamically change;
the board card refers to a PCB board card, the script program can be realized by a PTU, and the PTU is software developed by Intel aiming at the CPU and used for controlling power consumption change.
Further, step S1 is specifically executed by:
starting a script program;
and controlling the CPU of the corresponding board card through a script program, so that the power consumption of the CPU is dynamically changed, and the dynamic noise of the switching power supply is output, thereby achieving the limit test environment corresponding to the board card.
It can be understood that, in this step, the dynamic power consumption of the CPU is adjusted, so that dynamic noise can be output, and this environment is the environment where the dynamic noise required by the board interferes, and in the dynamic change process of the power consumption of the CPU, a limit test environment corresponding to the board may occur.
S2: carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result;
wherein the first test result comprises eye height test data and eye width test data. As shown in fig. 2, the test eye diagrams are respective test eye diagrams at different distances between the power network via and the differential signal network trace, and the test eye diagrams are drawn according to a first test result, in which eye height test data and eye width test data are implicit.
Specifically, referring to fig. 3, the sending end test specifically includes:
acquiring a sending end test result of the board card 4 in the current CPU 3 state through the oscilloscope 1 and the test fixture 2;
it is understood that the test fixture 2 and the oscilloscope 3 may be connected by SMA cables or other means.
Typically the script program may be provided within the CPU 3 or in another processor 5. The processor 5 serves as a console and can acquire the test results of the transmitting end in the oscilloscope 1.
Similarly, referring to fig. 4, the receiving end test specifically includes:
and acquiring a receiving end test result of the board card 4 in the current CPU 3 state by using the gold mark card 6 and the XDP jig 8.
It can be understood that, in the receiving end test process, the PTU software controls the power consumption of the CPU 3 to change, the CPU 3 sends a test signal to the gold tag card 6, and a feedback signal of the gold tag card 6 is sent to the processor 5 through the CPU 3, the XDP interface 7 of the board card 4, and the XDP fixture 8 in sequence, so that the processor 5 obtains a receiving end test result of the board card 4 in the current CPU 3 state.
It can be understood that the signal testing method in this embodiment may be applied to PCIe signal testing or upi (ultra Path interconnect) signal testing of the CPU interconnect interface, and may also be applied to the testing situation of other signals under the dynamic noise of the power supply.
The embodiment of the application discloses a signal testing method, which comprises the following steps: starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to dynamically change; carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result; the first test result includes eye height test data and eye width test data. The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
The embodiment of the invention discloses a specific signal testing method, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme. Further, the signal testing method may further include:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
Specifically, when comparing the first test result with the second test result, the respective eye diagrams of the two tests are usually compared, so as to obtain the actual magnitude of the influence of the power supply noise on the eye diagrams.
Further, before comparing the first test result with the second test result, the embodiment may further perform the following steps:
after obtaining the corresponding first test result, the method further includes:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
Specifically, taking PCIe 4.0 signals as an example, the measured first test result and the comparison result of the CPU as the receiving end may be shown in table 1 below:
TABLE 1 comparison of first test results with comparative results
Therefore, the signal testing method in the embodiment successfully achieves quantitative evaluation of the influence of the power supply noise on the signal, and can be further applied to signal limit testing and board wiring optimization.
The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
Correspondingly, the embodiment of the present invention further discloses a signal testing system, as shown in fig. 5, including:
the script module 01 is used for starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to be dynamically changed;
the test module 02 is used for carrying out sending end test and receiving end test on the board card in the current CPU state and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
In some specific embodiments, the signal testing system further includes a data analysis module 03 for:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
In some specific embodiments, the data analysis module 3 may further be configured to:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
In some specific embodiments, the script module 01 is specifically configured to:
starting a script program;
and controlling the CPU of the corresponding board card through a script program, so that the power consumption of the CPU is dynamically changed, and the dynamic noise of the switching power supply is output, thereby achieving the limit test environment corresponding to the board card.
In some specific embodiments, the sending-end test specifically includes: acquiring a sending end test result of the board card in the current CPU state through the oscilloscope and the test fixture;
the receiving end test specifically comprises the following steps: and acquiring a receiving end test result of the board card in the current CPU state by using the gold mark card and the XDP jig.
In some embodiments, the signal to be tested corresponding to the signal testing method is a PCIe signal or a UPI signal.
The embodiment of the present application further discloses an information testing apparatus, which is shown in fig. 6 and includes a processor 11 and a memory 12; wherein the processing 11 implements the following steps when executing the computer program stored in the memory 12:
starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to dynamically change;
carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
In some specific embodiments, when the processor 11 executes the computer subprogram stored in the memory 12, the following steps may be specifically implemented:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
In some specific embodiments, when the processor 11 executes the computer subprogram stored in the memory 12, the following steps may be specifically implemented:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
In some specific embodiments, when the processor 11 executes the computer subprogram stored in the memory 12, the following steps may be specifically implemented:
starting a script program;
and controlling the CPU of the corresponding board card through a script program, so that the power consumption of the CPU is dynamically changed, and the dynamic noise of the switching power supply is output, thereby achieving the limit test environment corresponding to the board card.
In some specific embodiments, the sending-end test specifically includes: acquiring a sending end test result of the board card in the current CPU state through the oscilloscope and the test fixture;
the receiving end test specifically comprises the following steps: and acquiring a receiving end test result of the board card in the current CPU state by using the gold mark card and the XDP jig.
In some embodiments, the signal to be tested corresponding to the signal testing method is a PCIe signal or a UPI signal.
Further, the signal testing apparatus in this embodiment may further include:
the input interface 13 is configured to obtain a computer program imported from the outside, store the obtained computer program in the memory 12, and further be configured to obtain various instructions and parameters transmitted by an external terminal device, and transmit the instructions and parameters to the processor 11, so that the processor 11 performs corresponding processing by using the instructions and parameters. In this embodiment, the input interface 13 may specifically include, but is not limited to, a USB interface, a serial interface, a voice input interface, a fingerprint input interface, a hard disk reading interface, and the like.
And an output interface 14, configured to output various data generated by the processor 11 to a terminal device connected thereto, so that other terminal devices connected to the output interface 14 can acquire various data generated by the processor 11. In this embodiment, the output interface 14 may specifically include, but is not limited to, a USB interface, a serial interface, and the like.
A communication unit 15 for establishing a telecommunication connection between the signal testing apparatus and the external server so that the signal testing apparatus can mount the image file into the external server. In this embodiment, the communication unit 15 may specifically include, but is not limited to, a remote communication unit based on a wireless communication technology or a wired communication technology.
And the keyboard 16 is used for acquiring various parameter data or instructions input by a user through real-time key cap knocking.
And the display 17 is used for displaying relevant information of the signal testing device in real time so that a user can know the testing condition of the current signal in time.
The mouse 18 may be used to assist the user in entering data and to simplify the user's operation.
Further, embodiments of the present application also disclose a readable storage medium, where the readable storage medium includes Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage medium known in the art. The readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of:
starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to dynamically change;
carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
The power consumption of the CPU is controlled to be dynamically changed by the script program, namely, a test environment of power supply dynamic noise is provided for the board card signal, the influence of the power supply dynamic noise on the signal quality can be obviously reflected by a first test result obtained in the test environment, and a reliable basis is provided for product quality and design optimization.
In some specific embodiments, the computer subprogram stored in the readable storage medium, when executed by the processor, may specifically implement the following steps:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
In some specific embodiments, the computer subprogram stored in the readable storage medium, when executed by the processor, may specifically implement the following steps:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
In some specific embodiments, the computer subprogram stored in the readable storage medium, when executed by the processor, may specifically implement the following steps:
starting a script program;
and controlling the CPU of the corresponding board card through a script program, so that the power consumption of the CPU is dynamically changed, and the dynamic noise of the switching power supply is output, thereby achieving the limit test environment corresponding to the board card.
In some specific embodiments, the sending-end test specifically includes: acquiring a sending end test result of the board card in the current CPU state through the oscilloscope and the test fixture;
the receiving end test specifically comprises the following steps: and acquiring a receiving end test result of the board card in the current CPU state by using the gold mark card and the XDP jig.
In some embodiments, the signal to be tested corresponding to the signal testing method is a PCIe signal or a UPI signal.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The signal testing method, system, device and readable storage medium provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A signal testing method, comprising:
starting a script program to control a CPU (central processing unit) of a corresponding board card so as to enable the power consumption of the CPU to dynamically change;
carrying out sending end test and receiving end test on the board card in the current CPU state, and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
2. The signal testing method of claim 1, further comprising:
acquiring a second test result corresponding to the board card when the CPU is in a low power consumption state or an idle state;
and comparing the first test result with the second test result to obtain the actual influence quantity of the power supply noise on the signal.
3. The signal testing method of claim 2, wherein after obtaining the corresponding first test result, further comprising:
judging whether the first test result meets spec or not;
if not, redesigning the wiring of the board card, and then executing the script program.
4. The signal testing method according to claim 1, wherein the starting of the script program to control the CPU of the corresponding board, so that the process of dynamically changing the power consumption of the CPU includes:
starting a script program;
and controlling the CPU of the corresponding board card through the script program to enable the power consumption of the CPU to be dynamically changed and output the dynamic noise of the switching power supply so as to achieve the limit test environment corresponding to the board card.
5. The signal testing method according to claim 4,
the sending end test specifically comprises:
acquiring a sending end test result of the board card in the current CPU state through an oscilloscope and a test fixture;
the receiving end test specifically comprises the following steps:
and acquiring a receiving end test result of the board card in the current CPU state by using the gold mark card and the XDP jig.
6. The signal testing method according to any one of claims 1 to 5, wherein the signal to be tested corresponding to the signal testing method is a PCIe signal or a UPI signal.
7. A signal testing system, comprising:
the script module is used for starting a script program to control the CPU of the corresponding board card so as to enable the power consumption of the CPU to be dynamically changed;
the test module is used for carrying out sending end test and receiving end test on the board card in the current CPU state and acquiring a corresponding first test result;
the first test result includes eye height test data and eye width test data.
8. A signal testing device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the signal testing method according to any one of claims 1 to 6 when executing the computer program.
9. A readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the signal testing method according to any one of claims 1 to 6.
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| CN113742146A (en) * | 2021-07-30 | 2021-12-03 | 苏州浪潮智能科技有限公司 | Test fixture and test device |
| CN113742146B (en) * | 2021-07-30 | 2023-07-25 | 苏州浪潮智能科技有限公司 | Test jig and test device |
| CN116184053A (en) * | 2023-05-04 | 2023-05-30 | 皇虎测试科技(深圳)有限公司 | Method, device, medium and equipment for quantitatively testing working noise of chip |
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