CN104931819A - High-frequency automatic test system and method - Google Patents
High-frequency automatic test system and method Download PDFInfo
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- CN104931819A CN104931819A CN201510295129.4A CN201510295129A CN104931819A CN 104931819 A CN104931819 A CN 104931819A CN 201510295129 A CN201510295129 A CN 201510295129A CN 104931819 A CN104931819 A CN 104931819A
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Abstract
The invention discloses a high-frequency automatic test system, and the system is used for testing the high-frequency parameters of a high-speed multi-channel cable assembly. The system comprises a main control module serving as a control main center, a testing module, a scanning module, and an output module, wherein the testing module, the scanning module and the output module are electrically connected with the main control module. The main control module comprises an automatic testing program, and the automatic testing program can send an instruction to the testing module and the cable assembly, can collect the testing data of the testing module and the cable assembly, and can display the testing data in a mode of tables and figures. The testing module is used for receiving the instruction of the main control module and a high-frequency parameter of a cable testing assembly. The scanning module is used for scanning a label of the cable assembly so as to obtain the production information of the cable assembly. The output module is used for outputting the testing data of the cable assembly. The invention also relates to a corresponding testing method. The system and method can greatly improve the testing efficiency and precision.
Description
Technical field
The present invention relates to a kind of cable-assembly test macro, particularly relate to a kind of high frequency Auto-Test System for high-speed cable assembly and method.
Background technology
The high-frequency parameter test of multi-channel high-speed cable-assembly needs through multiple working procedure, traditional manual test operating procedure is many and complicated, require that operator possesses certain specialty background knowledge, operator training cost is higher, separately because cable-assembly to be measured is hyperchannel, manually must realize each interchannel conversion, this makes testing procedure more complicated, and manually realize each interchannel conversion and easily cause interface wear and tear and increase test error, test period is long, inefficiency, great inconvenience is brought to batch testing, repeatability and the repeatability of cable high-frequency parameter test result are poor.
There are differences between every bar cable-assembly, its high-frequency parameter value: differential impedance, single-ended impedance, common code impedance, cable matched impedance, internal delay inequality, delay inequality between pair, signal transmission delay, differential insertion loss, differential insertion loss offsets, differentiated echo loss, common mode return loss, difference turns common mode return loss, difference turns Common Mode insertion loss, single-ended S-parameters, cross-talk and eye pattern parameter-Jitter(shake), Eye Height(eye is high), Eye Width(eye is wide) all can difference to some extent, therefore every bar cable-assembly all needs to carry out independent test parameter setting, this just causes manual operation step many and extremely inconvenient.
So, be badly in need of a kind of high frequency Auto-Test System and method solves the problem.
Summary of the invention
The present invention proposes a kind ofly to test the high-frequency parameter of high-speed multiple channel cable-assembly and the high frequency Auto-Test System of eye pattern and method fast and accurately.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high frequency Auto-Test System, for testing the high-frequency parameter of high-speed multiple channel cable-assembly, this system comprises the main control module serving as control axis and the test module, one scan module, the output module that are electrically connected with main control module respectively, wherein
Described main control module comprises autotest program, this autotest program can send instruction to test module, cable-assembly and collect test module, cable-assembly test data with the display of the form of form and image;
Described test module, for receiving the instruction of main control module, the high-frequency parameter of p-wire cable assembly;
Described scan module, for sweep trace cable assembly label to obtain the production information of this cable-assembly;
Described output module, for exporting the test data of this cable-assembly.
A kind of high-speed cable assembly high frequency automatic test approach is also proposed, high frequency Auto-Test System is adopted to test hyperchannel cable-assembly to be measured, this system comprises the main control module that serves as control axis and the test module of the high-frequency parameter for the instruction p-wire cable assembly that receive main control module be electrically connected with main control module respectively, for sweep trace cable assembly label to obtain the one scan module of the production information of this cable-assembly, for exporting an output module of the test data of this cable-assembly, one local data base and/or a cloud database, described test module comprises the analysis module be electrically connected by a control device and main control module, by the multi-channel switch that a switch control module and main control module are electrically connected, the high-frequency test tool be electrically connected by an information writing module and main control module and the power module be electrically connected with main control module, described power module is powered to switch, described switch is electrically connected the cable-assembly be fixed on high-frequency test tool by hyperchannel, described switch and analysis module are electrically connected, described switch control module with also comprise between switch powered by power module one be connected change-over panel, described main control module comprises autotest program, described high frequency automatic test approach comprises the following steps:
S1: open autotest program, inputs the item number of cable-assembly to be measured, and described system is by the automatic information extracting this item number from local data base and/or cloud database, and configuration testing module is that test is prepared automatically;
S2: the accuracy using standard specimen checking high frequency Auto-Test System, if be proved to be successful, can continue step below, otherwise will need artificial regeneration correction file;
S3: after having verified, scans the production information of the tag queries cable-assembly to be measured of cable-assembly to be measured with described scan module, if there is production information and energy correspondence, system will start test, otherwise autotest program reports an error, and can not perform test;
S4: test starts, described switch control module gauge tap completes switching between the different passage of cable-assembly to be measured and test in order, then transfers to analysis module carry out analyzing and processing by testing the test data obtained;
S5: the test data after analyzing and processing is transferred to autotest program by control device by described analysis module, described autotest program shows test data corresponding to each high-frequency parameter intuitively by form and image, and according to each test data standard provide result of determination for by or do not pass through;
S6: if test result is passed through, described master control module controls output module outputs test data; If test is not passed through, then can not output test data;
S7: test data is transferred to local data base and/or cloud database purchase, this has been tested;
S8: repeat step S3 ~ S7, start the test of next cable-assembly to be measured.
High-speed cable assembly Auto-Test System of the present invention and method can test high-frequency parameter and the eye pattern of high-speed multiple channel cable-assembly fast and accurately, and according to high-frequency parameter standard and eye pattern standard determination cable-assembly whether qualified, greatly promote testing efficiency and precision, be convenient to automated production and test.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the first structured flowchart of high frequency Auto-Test System of the present invention.
Fig. 2 is the second structured flowchart of high frequency Auto-Test System of the present invention.
Fig. 3 is the process flow diagram of high frequency automatic test approach of the present invention.
Embodiment
As shown in Figure 1, 2, the invention provides a kind of high frequency Auto-Test System 100, for testing the high-frequency parameter of high-speed multiple channel cable-assembly 200, this system 100 comprises the main control module 1 serving as control axis and the test module 2 be electrically connected with main control module 1 respectively, one scan module 3, output module 4.
Wherein, main control module 1 comprises autotest program 11, this autotest program 11 can send instruction to test module 2, cable-assembly 200 and collect test module 2, cable-assembly 200 test data with the display of the form of form and image, in the present embodiment, main control module 1 is computing machine 1a.
Test module 2, for receiving the instruction of main control module 1, the high-frequency parameter of p-wire cable assembly 200.Test module 2 comprises a control device 21, one switch control module 22, one information writing module 23, one power module 24, one analysis module 25, multi-channel switch 26, high-frequency test tool 27 and one connects change-over panel 28, analysis module 25 is electrically connected by control device 21 and main control module 1, switch 26 is electrically connected by switch control module 22 and main control module 1, high-frequency test tool 27 is electrically connected by information writing module 23 and main control module 1, power module 24 and main control module 1 are electrically connected, power module 24 is powered to switch 26, cable-assembly 200 is fixed on high-frequency test tool 27, analysis module 25, switch 26, high-frequency test tool 27 is electrically connected successively, the connection change-over panel 28 of being powered by power module 24 is between switch control module 22 and switch 26.
Scan module 3, for the label of sweep trace cable assembly 200 to obtain the production information of this cable-assembly 200, scan module 3 comprise one scan rifle 31 and be connected with scanner 31 one produce line MES(Manufacturing Execution System, manufacturing execution system) database 32, the label of scanner 31 sweep trace cable assembly 200, can connect and produce the production information that line MES database 32 obtains this cable-assembly 200 and carry out correspondence, if can be corresponding, then can carry out follow-up test.
Output module 4, for exporting the parameter information of this cable-assembly 200, in the present embodiment, output module 4 is a bar code printer 4a, and main control module 1 energy control strip code printer 4a is according to customer demand automatic printing bar code.
As shown in Figure 2, in the present embodiment, main control module 1 is computing machine 1a, control device 21 is NI (National Instruments, Nat Instr Corp., be called for short NI) GBIP(General-Purpose Interface Bus, general purpose interface bus) control panel or network interface 21a, switch 26 and switch control module 22 are respectively RF switch 26a and RF switch control module 22a, information writing module 23 is I2C (Inter-Integrated Circuit, inner fusion circuit) module 23a, power module 24 is DC(direct current, i.e. direct current) power module 24a.
System 100 also comprises a local data base and/or a cloud database 5, and main control module 1 can store and information extraction in local data base and/or cloud database 5.
As shown in Figure 3, the present invention also provides a kind of high frequency automatic test approach, and the method adopts above-mentioned high frequency Auto-Test System 100 to test hyperchannel cable-assembly 200 to be measured, and the method comprises the following steps:
S1: open autotest program 11, inputs the item number of cable-assembly 200 to be measured, and system 100 is by the automatic information extracting this item number from local data base and/or cloud database 5, and automatically configuration testing module 2 is prepared for test;
S2: the accuracy using standard specimen checking high-speed cable assembly Auto-Test System 100, if be proved to be successful, can continue step below, otherwise will need artificial regeneration correction file;
S3: after having verified, scans the production information before the tag queries cable 200 to be measured of cable-assembly 200 to be measured with scan module 3, if there is production information and energy correspondence, system 100 will start test, otherwise autotest program 11 reports an error, and can not perform test;
S4: test starts, RF switch control module 26a controls RF switch 22a completes switching between the different passage of cable-assembly 200 to be measured and test in order, then the test data that test obtains is transferred to analysis module 25 and analyzes;
S5: the test data after process is transferred to autotest program 11 by NI GBIP control panel or network interface 21a by analysis module 25, autotest program 11 shows each test data intuitively by form and image, and according to each test parameter standard provide result of determination for by or do not pass through;
S6: if test result is passed through, main control module 1 control strip code printer 4a automatic printing bar code; If test is not passed through, then bar code can not be printed;
S7: test data is transferred to local data base and/or cloud database 5 stores, this has been tested;
S8: repeat step S3 ~ S7, start the test of next cable-assembly to be measured.
Each high-frequency parameter in step S5 comprises: differential impedance, single-ended impedance, common code impedance, cable matched impedance, internally delay inequality, pair between delay inequality, signal transmission delay, differential insertion loss, differential insertion loss skew, differentiated echo loss, common mode return loss, difference turns common mode return loss, difference turns Common Mode insertion loss, the parameter-shake of single-ended S-parameters, cross-talk and eye pattern, eye is high, eye is wide.
Wherein, scanning detailed process in step S3 is: to be fixed on by a cable-assembly 200 to be measured on high-frequency test tool 27 and the hyperchannel of cable-assembly 200 to be measured is electrically connected with RF switch 26a respective channel respectively, scan the label above cable-assembly 200 to be measured with scanner 31, the product line MES database 32 that is certainly dynamically connected is inquired about the production information before this cable-assembly 200 to be measured by system 100.
High-frequency parameter in step S5 comprises: differential impedance, single-ended impedance, common code impedance, cable matched impedance, internally delay inequality, pair between delay inequality, signal transmission delay, differential insertion loss, differential insertion loss skew, differentiated echo loss, common mode return loss, difference turns common mode return loss, difference turns Common Mode insertion loss, single-ended S-parameters, cross-talk and eye pattern parameter: Jitter(shake), Eye Height(eye is high), Eye Width(eye is wide).
As required, also step S11 is comprised: if test result is passed through between step S5, step S6, product information is written to EEPROM (the Electrically Erasable Programmable Read-Only Memory of cable-assembly 200 to be measured by main control module 1 control I2C module 23a, EEPROM (Electrically Erasable Programmable Read Only Memo)) in chip, otherwise do not write.
Test process of the present invention is as described in above-mentioned embodiment of the method: the test data of cable-assembly 200 to be measured is sent to autotest program 11 is shown intuitively by form and image by RF switch 22a, analysis module 25, and compare with high-frequency parameter standard and image, judgement in error range is qualified, and being judged as not in error range is defective.
The present invention possesses following advantage:
1) the multi-channel high-speed cable-assembly that full-automatic testing 1 ~ 9 is right, test speed is fast, such as: 8 pairs of QSFP+ high-speed cable module testing speed reach 3 minutes/bar, and existing manual testing's speed is about 1 hour/bar;
2) passive and active high-speed cable module testing is applicable to;
3) system compatible major part high-speed cable assembly SI testing standard, such as: Mini-SAS, SFP+, QSFP etc.;
4) utilize standard specimen cable-assembly automatic calibration, ensure measuring accuracy;
5) I2C module 23a writes after automatically generating written information automatically, and the accuracy of fox message and write;
6) bar code printing function, tests by rear, can according to customer requirement automatic printing corresponding product bar code;
7) remote data base management function, all data store at local data base and/or cloud database 5, can realize remote data base and extract and preserve.
Although be example object, disclose the preferred embodiment of the present invention, but those of ordinary skill in the art will recognize, when not departing from scope and spirit of the present invention disclosed in appending claims, various improvement, increase and replacement are possible.
Claims (10)
1. a high frequency Auto-Test System, for testing the high-frequency parameter of high-speed multiple channel cable-assembly, it is characterized in that: this system comprises the main control module serving as control axis and the test module, one scan module, the output module that are electrically connected with main control module respectively, wherein
Described main control module comprises autotest program, this autotest program can send instruction to test module, cable-assembly and collect test module, cable-assembly test data with the display of the form of form and image;
Described test module, for receiving the instruction of main control module, the high-frequency parameter of p-wire cable assembly;
Described scan module, for sweep trace cable assembly label to obtain the production information of this cable-assembly;
Described output module, for exporting the test data of this cable-assembly.
2. high frequency Auto-Test System according to claim 1, it is characterized in that: described test module comprises the analysis module be electrically connected by a control device and main control module, by the multi-channel switch that a switch control module and main control module are electrically connected, the high-frequency test tool be electrically connected by an information writing module and main control module and the power module be electrically connected with main control module, described power module is powered to switch, described switch is electrically connected the cable-assembly be fixed on high-frequency test tool by hyperchannel, described switch and analysis module are electrically connected.
3. high frequency Auto-Test System according to claim 2, it is characterized in that: described main control module is computing machine, described control device is NI GBIP control panel or network interface, described switch and switch control module are respectively RF switch and RF switch control module, described information writing module is I2C module, and described power module is DC power module.
4. high frequency Auto-Test System according to claim 2, is characterized in that: described switch control module with also comprise between switch powered by power module one be connected change-over panel.
5. high frequency Auto-Test System according to claim 1, is characterized in that: described scan module comprise one scan rifle and be electrically connected with scanner one produce line MES database, described output module is a bar code printer.
6. high frequency Auto-Test System according to claim 1, is characterized in that: described system also comprises a local data base and/or a cloud database, and described main control module can store or information extraction in local data base and/or cloud database.
7. a high frequency automatic test approach, high frequency Auto-Test System is adopted to test hyperchannel cable-assembly to be measured, this system comprises the main control module that serves as control axis and the test module of the high-frequency parameter for the instruction p-wire cable assembly that receive main control module be electrically connected with main control module respectively, for sweep trace cable assembly label to obtain the one scan module of the production information of this cable-assembly, for exporting an output module of the test data of this cable-assembly, one local data base and/or a cloud database, described test module comprises the analysis module be electrically connected by a control device and main control module, by the multi-channel switch that a switch control module and main control module are electrically connected, the high-frequency test tool be electrically connected by an information writing module and main control module and the power module be electrically connected with main control module, described power module is powered to switch, described switch is electrically connected the cable-assembly be fixed on high-frequency test tool by hyperchannel, described switch and analysis module are electrically connected, described switch control module with also comprise between switch powered by power module one be connected change-over panel, described main control module comprises autotest program, described high frequency automatic test approach comprises the following steps:
S1: open autotest program, inputs the item number of cable-assembly to be measured, and described system is by the automatic information extracting this item number from local data base and/or cloud database, and configuration testing module is that test is prepared automatically;
S2: the accuracy using standard specimen checking high frequency Auto-Test System, if be proved to be successful, can continue step below, otherwise will need artificial regeneration correction file;
S3: after having verified, scans the production information of the tag queries cable-assembly to be measured of cable-assembly to be measured with described scan module, if there is production information and energy correspondence, system will start test, otherwise autotest program reports an error, and can not perform test;
S4: test starts, described switch control module gauge tap completes switching between the different passage of cable-assembly to be measured and test in order, then transfers to analysis module carry out analyzing and processing by testing the test data obtained;
S5: the test data after analyzing and processing is transferred to autotest program by control device by described analysis module, described autotest program shows test data corresponding to each high-frequency parameter intuitively by form and image, and according to each test data standard provide result of determination for by or do not pass through;
S6: if test result is passed through, described master control module controls output module outputs test data; If test is not passed through, then can not output test data;
S7: test data is transferred to local data base and/or cloud database purchase, this has been tested;
S8: repeat step S3 ~ S7, start the test of next cable-assembly to be measured.
8. high frequency automatic test approach according to claim 7, is characterized in that: the high-frequency parameter in step S5 comprises: differential impedance, single-ended impedance, common code impedance, cable matched impedance, internally delay inequality, pair between delay inequality, signal transmission delay, differential insertion loss, differential insertion loss skew, differentiated echo loss, common mode return loss, difference turns common mode return loss, difference turns Common Mode insertion loss, the parameter-shake of single-ended S-parameters, cross-talk and eye pattern, eye is high, eye is wide.
9. high frequency automatic test approach according to claim 7, it is characterized in that: described scan module comprise one scan rifle and be electrically connected with scanner one produce line MES database, scanning detailed process in step S3 is: to be fixed on by a cable-assembly to be measured on high-frequency test tool and the hyperchannel of cable-assembly to be measured is electrically connected with switch respective channel respectively, scan the label above cable-assembly to be measured with scanner, system produces the production information before this cable-assembly to be measured of line MES data base querying by being certainly dynamically connected.
10. high frequency automatic test approach according to claim 7, it is characterized in that: between step S6 and step S7, also comprise step S11: if test result is passed through, product information is written in the chip of cable-assembly to be measured by described master control module controls information writing module, otherwise does not write.
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| CN107450526A (en) * | 2017-09-26 | 2017-12-08 | 佛山市中格威电子有限公司 | Control system and its method of work with visualization integration testing and parameter modification |
| CN111537820A (en) * | 2020-05-13 | 2020-08-14 | 延锋伟世通汽车电子有限公司 | Device for realizing double-hole automatic test of product pin signal by using NI board card |
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Application publication date: 20150923 |