CN110855353A - Error code tester and test system suitable for various types of optical modules - Google Patents
Error code tester and test system suitable for various types of optical modules Download PDFInfo
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- CN110855353A CN110855353A CN201911134345.5A CN201911134345A CN110855353A CN 110855353 A CN110855353 A CN 110855353A CN 201911134345 A CN201911134345 A CN 201911134345A CN 110855353 A CN110855353 A CN 110855353A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07953—Monitoring or measuring OSNR, BER or Q
Abstract
The invention discloses an error code tester and a test system suitable for various types of optical modules, which comprises one or more single board systems, wherein each single board system comprises: the system comprises an FPGA module, a CPU module connected with the FPGA module, and a plurality of interface boards used for inserting optical modules; the plurality of interface boards can be adapted to different types of optical modules, wherein each interface board corresponds to a unique identification code; the FPGA module is connected with an upper computer through a CPU module, when an optical module is inserted, the interface board sends a corresponding identification code to the upper computer through the FPGA module, and the upper computer identifies the type of the inserted optical module based on the identification code and sends a corresponding configuration file to the FPGA module; and the FPGA module performs error code test according to the configuration file. The method and the device can be suitable for error code detection of various optical modules, and can be used for testing the inserted optical module in a self-adaptive manner according to the type of configuration information.
Description
Technical Field
The invention belongs to the technical field of error code testing, and particularly relates to an error code tester and an error code testing system suitable for various optical modules.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the large-scale application of big data, cloud computing and the Internet of things, the data flow is increased rapidly, and the requirement on network transmission is higher and higher. The optical fiber transmission has the characteristics of large transmission bandwidth, low transmission loss, strong anti-interference capability and the like, is dominant in high-speed network transmission, and has increasingly wide corresponding optical module application and increasing test requirements on optical modules.
At present, the type of an error code instrument interface of an optical module is tested to be single, and the optical module only supports 1-2 interface types generally. The test requirements of various optical modules cannot be met, if the various optical modules are tested, a plurality of error code testers supporting the optical modules of different types are needed, when the optical modules are tested in batches, the plurality of error code testers are needed to be operated, the cost is high, and the efficiency is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the error code tester suitable for various optical modules, which can automatically identify the types of the inserted optical modules and detect the error codes.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
an error code tester suitable for various types of optical modules comprises one or more single board systems, wherein each single board system comprises: the system comprises a function board unit, an interface board unit and a transfer board unit; the function board unit comprises a CPU module and an FPGA module, and the upper computer configures FPGA files and control instructions through the CPU module; the interface board unit comprises ten interface boards which are adaptive to different types of optical modules and can be matched with the function board for use according to requirements. Each interface board corresponds to a unique identification code; the adapter plate unit realizes the function of connecting the single-board system with the back plate;
the FPGA module is connected with an upper computer through a CPU module via a patch panel and a back panel, when an optical module is inserted, the interface board sends a corresponding identification code to the upper computer via the FPGA module, the upper computer identifies the type of the inserted optical module based on the identification code, and a corresponding configuration file is configured into the FPGA through the CPU module; and the FPGA module performs error code test according to the configuration file.
Furthermore, the single board system further comprises a clock module and a power module which are connected with the FPGA module.
Furthermore, the unique identification code is determined by an identification circuit, and each interface board is provided with the identification circuit and connected with the FPGA module;
the identification circuit comprises a plurality of first resistors, one ends of the first resistors are connected with a power supply, the other ends of the first resistors are connected with a second resistor, and the other ends of the second resistors are grounded to obtain a plurality of lines comprising the first resistors and the second resistors; the connection bit of the line is 0, the bit of the line is 1 when the line is not connected, and the plurality of lines correspond to a code consisting of a plurality of bits, namely the identification code of the identification circuit; and obtaining the identification codes of a plurality of identification circuits, namely the identification codes of a plurality of interface boards, by distinguishing the on-off of the plurality of lines.
Further, the FPGA module is configured to:
the pattern generation module generates a parallel test pattern, the parallel test pattern is sent to a GTY interface of the FPGA through an inverse control circuit, an error code insertion circuit and a pre-emphasis control circuit, and the GTY interface generates a serial test sequence through parallel-to-serial conversion; and the GTY interface receives the high-speed serial test sequence, converts the serial test sequence into parallel data through serial-parallel conversion, and compares the parallel data with a local graph according to bits after boundary alignment and channel combination to obtain an error code test result.
Further, after the error code test is performed on the FPGA modules in the one or more single board systems, the test result is sent to the upper computer.
Furthermore, the error code tester also comprises two Ethernet interfaces, wherein one Ethernet interface is used for connecting and testing with an upper computer; and the other network port can be connected with a plurality of error code testers in series, and the plurality of error code testers are controlled to carry out cascade test by one upper computer.
Further, the upper computer can be connected with one or more clients.
One or more embodiments provide a test system suitable for multiple types of optical modules, comprising: the device comprises an upper computer and one or more error code testers, wherein the upper computer is configured to:
monitoring the plugging and unplugging of the optical module, identifying the type of the inserted optical module according to an identification code transmitted by an interface board when the optical module is monitored to be inserted, and sending a corresponding configuration file to the FPGA module; and the FPGA module performs error code test according to the configuration file.
Further, the host computer is further configured to: monitoring client access, starting a communication thread when the client access is monitored, performing identity authentication on the client, and disconnecting the client if the authentication fails; and if the authentication is passed, receiving a test instruction sent by the client, and carrying out error code test on the currently inserted optical module.
Further, if the authentication is passed, the upper computer also receives configuration information of the client aiming at the configuration file.
The above one or more technical solutions have the following beneficial effects:
the error code tester can be adapted to different types of optical modules, and one complete machine can meet the test requirements of various types of optical modules.
The error code tester of the invention can expand a plurality of single board systems according to the requirements, and each single board system can realize the test of various types of optical modules; and moreover, the plurality of error code testers can be sequentially connected through the external communication interface to carry out cascade test, so that the optical modules can be conveniently tested in batches, the test efficiency is improved, and the cost is saved.
The error code tester distinguishes different types of optical modules through the unique identification code of the interface board, realizes automatic identification of the types of the optical modules, and can perform error code detection based on corresponding configuration information in a self-adaptive manner when any type of optical module is inserted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a functional block diagram of a single board system in an optical module error tester according to one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of the data processing flow in an FPGA module;
FIG. 3 is a schematic diagram of an identification circuit;
FIG. 4 is a schematic diagram of a cascade of multiple error testers;
FIG. 5 is a flow chart of a method for server snoop thread operation.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
The embodiment discloses an error code tester adaptable to multiple types of optical modules, which comprises one or more single board systems, wherein each single board system comprises: the system comprises a function board unit, an interface board unit and a transfer board unit; the function board unit comprises a CPU module and an FPGA module, and the upper computer configures FPGA files and control instructions through the CPU module; the interface board unit comprises ten interface boards which are adaptive to different types of optical modules and can be matched with the function board for use according to requirements. Each interface board corresponds to a unique identification code; the adapter plate unit realizes the function of connecting the single-board system with the back board.
In this embodiment, the unique identification code is determined by an identification circuit, the identification circuit includes a plurality of first resistors, one ends of the plurality of resistors are connected to a power supply (+3.3VD), the other ends of the plurality of resistors are connected to a second resistor, and the other ends of the second resistor are grounded, so that a plurality of lines including the first resistors and the second resistors are obtained. The bit of the circuit connection (welding) is 0, the bit of the circuit disconnection is 1, the plurality of circuits correspond to a code consisting of a plurality of bits, and the codes are adopted to distinguish different types of interface boards. The identification circuit is connected to the FPGA module.
In this embodiment, five first resistors and five second resistors are provided, and the types of interface boards are distinguished by on-off of five lines including the first resistors and the second resistors. As shown in fig. 3, the circuit ID is 00110, the corresponding interface board is a QSFP interface board, and for each interface board, the ID is as follows: SFP-00000, CSFP-00001, XFP-00010, DSFP-00011, CXP-00100, QSFP-00110, CFP-00111, CFP2-01000, CFP4-01001 and CFP 8-01010.
And the FPGA is connected with an upper computer through a remote communication module.
In order to meet the test requirements of various types of optical modules, corresponding FPGA files are configured in the upper computer for different interface board types, and the FPGA files comprise data transmission rate control information, error code sequence generation and comparison information and the like. When an optical module is inserted, the interface board sends the corresponding identification code to the FPGA module and further sends the identification code to an upper computer; the upper computer identifies the type of the inserted optical module based on the identification code and sends a corresponding configuration file to the FPGA module; and the FPGA module performs error code test according to the configuration file.
The FPGA module is configured to execute the following processes:
in the sending process, firstly, a parallel test pattern is generated by a pattern generation module, and is transmitted to a GTY interface of the FPGA through an inverse control circuit, an error code insertion circuit and a pre-emphasis control circuit, and the GTY generates a serial test sequence through parallel-serial conversion;
in the receiving process, firstly, a GTY receives a high-speed serial sequence, the high-speed serial sequence is converted into parallel data in a serial-parallel mode, the parallel data are subjected to bit comparison with a local graph after being combined with a channel through boundary alignment, and the error rate of the comparison result is calculated by an upper computer.
In order to facilitate production, debugging and maintenance, and flexibility of future upgrading, each single board system is divided into 4 independent board cards from the aspect of hardware, and the board cards are respectively a back board, a function board, a patch board and an interface board. The board cards are relatively independent and are interconnected through the standardized interface of the back board and the high-speed connector on the board, so that the replacement is convenient. The back board of the whole machine is provided with a whole machine remote control interface and a power interface which are externally provided and are respectively used for establishing connection between the remote communication module and external communication equipment or between the remote communication module and other whole machines and between the power module and an external power supply, and 12VDC input power, remote control signal connection and fan control are provided for the whole machine.
Each error code tester comprises two Ethernet interfaces, wherein one Ethernet interface is used for connecting and testing with an upper computer; and the other network port can be connected with other error code testers, so that a plurality of error code testers are connected in series, and the plurality of error code testers are controlled to carry out cascade test by one upper computer. The error code testers are connected in sequence through the external Ethernet interfaces, cascade test can be achieved, the method is particularly suitable for batch test of the optical modules, the types of the optical modules do not need to be distinguished during test, and the error code testers can adaptively distinguish the types and carry out test.
Example two
A system suitable for testing the error codes of multiple types of optical modules comprises one or more error code testers and an upper computer.
The upper computer can be connected with the client, and when the configuration file in the upper computer needs to be modified, the configuration file is configured through the client.
Firstly, system initialization and self-checking are carried out after the system is powered on, and the upper computer starts a server monitoring thread after the self-checking is successful.
The upper computer stores identification information of a plurality of types of optical module interfaces, the server monitors threads, and the monitoring threads execute the following operations when being started:
(1) monitoring optical module plug
When the optical module is monitored to be inserted, the program is transferred to an optical module detection and recording thread: judging which type of the inserted optical module is according to the identification code transmitted by the interface board, sending the configuration file of the corresponding type to the FPGA module for error code test, and recording the detection result;
when the optical module is detected to be pulled out, the main program judges which type of the inserted optical module is according to the identification code transmitted by the interface board and records the type.
(2) Monitoring client access
The single board system can establish connection with the client through the Ethernet. And when the client is monitored to be accessed, starting a communication thread to communicate with the client, and starting one communication thread every time one client is accessed.
And authenticating the client in the communication thread, processing the test operation instruction of the user if the authentication is passed, and disconnecting the user and exiting the thread if the authentication is not successful.
Compared with the common test instrument working process, the working process can enable a plurality of users to participate in the test, the remote control mode can enable an operator to be separated from the test instrument, the users can remotely test the optical module on the production line in an office, the operation is more convenient, the module hierarchical structure of the whole system is clear, and the expansion and the maintenance are convenient.
The embodiment supports ten interface type optical module tests, designs a main control function board which can be adapted to ten optical module test interface boards, realizes the modularized separation of the function board and the interface board, and can be combined according to requirements. The system cascade test is supported, a user can be connected with the tester through a network, the position of the user is not limited, and multi-user operation is supported.
One or more of the above embodiments have the following technical effects:
the error code tester can be adapted to different types of optical modules, and one complete machine can meet the test requirements of various types of optical modules.
The error code tester of the invention can expand a plurality of single board systems according to the requirements, and each single board system can realize the test of various types of optical modules; and moreover, the plurality of error code testers can be sequentially connected through the external communication interface to carry out cascade test, so that the optical modules can be conveniently tested in batches, the test efficiency is improved, and the cost is saved.
The error code tester distinguishes different types of optical modules through the unique identification code of the interface board, realizes automatic identification of the types of the optical modules, and can perform error code detection based on corresponding configuration information in a self-adaptive manner when any type of optical module is inserted.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. An error code tester suitable for various types of optical modules is characterized by comprising one or more single board systems, wherein each single board system comprises: the system comprises an FPGA module, a CPU module connected with the FPGA module, and a plurality of interface boards used for inserting optical modules; the plurality of interface boards can be adapted to different types of optical modules, wherein each interface board corresponds to a unique identification code;
the FPGA module is connected with an upper computer through a CPU module, when an optical module is inserted, the interface board sends a corresponding identification code to the upper computer through the FPGA module, and the upper computer identifies the type of the inserted optical module based on the identification code and sends a corresponding configuration file to the FPGA module; and the FPGA module performs error code test according to the configuration file.
2. The error code tester for multiple types of optical modules according to claim 1, wherein said single board system further comprises a clock module and a power module connected to the FPGA module.
3. The error code tester applicable to various types of optical modules according to claim 1, wherein the unique identification code is determined by an identification circuit, and each interface board is provided with an identification circuit connected with the FPGA module;
the identification circuit comprises a plurality of first resistors, one ends of the first resistors are connected with a power supply, the other ends of the first resistors are connected with a second resistor, and the other ends of the second resistors are grounded to obtain a plurality of lines comprising the first resistors and the second resistors; the connection bit of the line is 0, the bit of the line is 1 when the line is not connected, and the plurality of lines correspond to a code consisting of a plurality of bits, namely the identification code of the identification circuit; and obtaining the identification codes of a plurality of identification circuits, namely the identification codes of a plurality of interface boards, by distinguishing the on-off of the plurality of lines.
4. The error tester of claim 1, wherein the FPGA module is configured to:
the pattern generation module generates a parallel test pattern, the parallel test pattern is sent to a GTY interface of the FPGA through an inverse control circuit, an error code insertion circuit and a pre-emphasis control circuit, and the GTY interface generates a serial test sequence through parallel-to-serial conversion; and the GTY interface receives the high-speed serial test sequence, converts the serial test sequence into parallel data through serial-parallel conversion, and compares the parallel data with a local graph according to bits after boundary alignment and channel combination to obtain an error code test result.
5. The error code tester for multiple types of optical modules according to claim 1, wherein after the error code test is performed on the FPGA module in one or more single board systems, the test result is sent to the upper computer.
6. The error tester for multiple types of optical modules according to claim 1, wherein the error tester further comprises an ethernet interface for establishing a connection with an ethernet interface of another error tester to perform a cascade test of multiple error testers.
7. The error code tester for multiple optical modules according to claim 1, wherein the host computer is capable of establishing connection with one or more clients.
8. A test system adapted for multiple types of optical modules, comprising: the upper computer, the one or more error code testers of any one of claims 1-7, wherein the upper computer is configured to:
monitoring the plugging and unplugging of the optical module, identifying the type of the inserted optical module according to an identification code transmitted by an interface board when the optical module is monitored to be inserted, and sending a corresponding configuration file to the FPGA module; and the FPGA module performs error code test according to the configuration file.
9. The test system for multiple types of optical modules as recited in claim 8, wherein the host computer is further configured to: monitoring client access, starting a communication thread when the client access is monitored, performing identity authentication on the client, and disconnecting the client if the authentication fails; and if the authentication is passed, receiving a test instruction sent by the client, and carrying out error code test on the currently inserted optical module.
10. The system of claim 9, wherein if the authentication is successful, the upper computer further receives configuration information of the client for the configuration file.
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| CN113872682A (en) * | 2021-09-16 | 2021-12-31 | 苏州浪潮智能科技有限公司 | Optical module introduction test method and system |
| CN115016998A (en) * | 2022-08-08 | 2022-09-06 | 南京宏泰半导体科技有限公司 | Sub-module self-adaption method, device, system and storage medium |
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