CN104796687A - Testing device for frequency mixer of distributed cable mode termination system - Google Patents
Testing device for frequency mixer of distributed cable mode termination system Download PDFInfo
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- CN104796687A CN104796687A CN201410345750.2A CN201410345750A CN104796687A CN 104796687 A CN104796687 A CN 104796687A CN 201410345750 A CN201410345750 A CN 201410345750A CN 104796687 A CN104796687 A CN 104796687A
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- frequency mixer
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Abstract
The invention discloses a testing device for a frequency mixer of a distributed cable mode termination system. The testing device comprises at least a probe and a processing component which are electrically connected with each other. The processing component comprises a script running module, a loading module and a testing module. The script running module runs a testing script. The loading module loads a virtual instrument software architecture. According to the running testing script, the testing module requests the loaded virtual instrument software architecture to test the port of the frequency mixer of a to-be-tested distributed cable mode termination system through the probe.
Description
Technical field
The present invention relates to a kind of testing apparatus of distributed cable television modem terminal system frequency mixer.
Background technology
Along with a large amount of commercializations of distributed cable television modem terminal system (Distributed cable modem termination system, D-CMTS) in recent years, increasing producer gets involved the equipment producing this respect.But distributed cable television modem terminal system frequency mixer index test is more difficult.
Furthermore, manual test frequency mixer needs tester to have certain technical foundation, thus causes tester to be not easy to raise.In addition, tester needs according to different test events, spends extra time debugging net point parameter, causes manual testing's production efficiency low.In addition, need tester to use artificial mode, judge whether test result meet the requirements further, and then cause error rate very high.
Therefore, how to provide a kind of testing apparatus of distributed cable television modem terminal system frequency mixer, in order to improve testing efficiency, reducing error rate is that current industry desires most ardently the problem dropping into development resources and solve.
Summary of the invention
Main purpose of the present invention, be to provide a kind of distributed cable television modem terminal system (Distributed cable modem terminationsystem, D-CMTS) testing apparatus of frequency mixer, in order to improve testing efficiency, reduces error rate.
For achieving the above object, the invention provides a kind of testing apparatus of distributed cable television modem terminal system frequency mixer, it comprises:
At least one probe, in order to insert at least one port of a distributed cable television modem terminal system frequency mixer to be measured; And
One processing components, be electrically connected described at least one probe, wherein said processing components comprises:
One script runs module, runs a test script;
One load-on module, loads a virtual instrument software framework; And
One test module, according to run described test script, require the described virtual instrument software framework loaded, by described at least one probe, described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is tested.Beneficial effect of the present invention: the testing apparatus that the invention provides a kind of distributed cable television modem terminal system frequency mixer, can improve the testing efficiency produced on line, reduces error rate.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of testing apparatus one embodiment of the distributed cable television modem terminal system of the present invention (Distributed cable modem termination system, D-CMTS) frequency mixer.
The flow chart of the method for testing of Fig. 2 performed by the testing apparatus of D-CMTS frequency mixer.
Embodiment
Below will disclose multiple execution mode of the present invention with accompanying drawing, as clearly stated, many details will be explained in the following description.But should be appreciated that, these details are not applied to limit the present invention.That is, in some embodiments of the present invention, these details are non-essential.In addition, for simplifying for the purpose of accompanying drawing, some existing usual structures and assembly represent in the mode simply illustrated in the accompanying drawings.
Fig. 1 is the functional block diagram of testing apparatus one embodiment according to the distributed cable television modem terminal system of the present invention (Distributed cable modem termination system, D-CMTS) frequency mixer.
The testing apparatus 100 of D-CMTS frequency mixer comprises at least one probe 111 and a processing components 120 that are mutually electrically connected.Processing components 120 can be central processing unit (Central Processing Unit, CPU) or other can in order to perform the processing components of a virtual instrument software framework (Virtual Instrument Software Architecture, VISA).Wherein, virtual instrument software framework (VirtualInstrument Software Architecture, VISA) can be the virtual instrument software framework of National Instruments (National Instruments, NI) virtual instrument software framework or other type.In some embodiments of the invention, each assembly of processing components 120 can implementation be program code, provides corresponding function after accessing for processing components 120.In other embodiments of the present invention, each assembly of processing components 120 can implementation be circuit.So after this little power on circuitry, each assembly of processing components 120 can provide its corresponding function.
Probe 111 is in order to insert at least one port 201 of a distributed cable television modem terminal system to be measured (Distributed cable modem termination system, D-CMTS) frequency mixer 200.Wherein, probe 111 can be provided by a network analyzer.So processing components 120 can be connected with network analyzer, thus test by the probe 111 on network analyzer.The port that port 201 can be radio frequency (radio frequency, RF) input (input, IN) port, RF exports other type on (output, OUT) port or D-CMTS frequency mixer 200 of D-CMTS frequency mixer 200.
Processing components 120 comprises a script and runs module 121, load-on module 122 and a test module 123.The flow chart of the method for testing of Fig. 2 performed by the testing apparatus 100 of D-CMTS frequency mixer.Simultaneously with reference to Fig. 1 and Fig. 2.
In step 302, script runs module 121 and runs a test script.
In step 304, load-on module 122 loads a virtual instrument software framework.So after loading virtual instrument software framework, processing components 120 can control network analyzer, and by the probe 111 on network analyzer, tests the port 201 of D-CMTS frequency mixer 200 to be measured.In addition, after test script runs and also successfully loads virtual instrument software framework, whether processing components 120 can be connected with between network analyzer according to test script check processing assembly 120, judges whether to start to test.After confirming processing components 120 and being successfully connected between network analyzer, processing components 120 just starts to test.
In step 308, test module 123, according to run test script, requiring the virtual instrument software framework loaded, by popping one's head in 111, testing the port 201 of D-CMTS frequency mixer 200 to be measured.Thus, because testing apparatus 100 can be tested automatically, thus can improve the testing efficiency produced on line, reduce error rate.
In addition, in the step 310, one read module 124 of processing components 120 can require the added virtual instrument software framework carried, and reads the data of carrying out testing gained by the port 201 of probe 111 pairs of D-CMTS frequency mixers 200 of network analyzer, and is recorded to a storage assembly 150.Wherein, read module 124 is electrically connected storage assembly 150.Thus, tester on line can be avoided producing by test result misregistration.
Processing components 120 also can drive display module 130 to show test results.Wherein, processing components 120 can drive display module 130 on the waveform of test result, show one to judge line, as judging whether each test point meets the foundation of test request further.Thus, the tester produced on line can easily by manual type, and whether duplicate acknowledgment test result is correct.
In application scenes of the present invention, the testing apparatus 100 of D-CMTS frequency mixer can comprise multiple probe 111,112, or D-CMTS frequency mixer 200 to be measured also can comprise multiple port 201,202.In this application scenarios, processing components 120 more can comprise a reminding module 125.Carrying out testing, (step 308) is front, and reminding module 125 can drive display module 130 or loudspeaker 140 to produce an information, in order to point out the annexation (step 306) between probe 111,112 and port 201,202.Wherein, reminding module 125 is electrically connected display module 130 or loudspeaker 140.Reminding module 125 can drive display module 130 to show corresponding information.In addition, reminding module 125 also can drive loudspeaker in a voice form, sends corresponding information.Thus, the tester produced on line can understand described in probe 111,112 to receive which port easily, reduces error rate.
Test module 123 can for the reflection of D-CMTS frequency mixer 200, cable TV (cable television, CATV) frequency response, downstream signal (downloadsignal, the parameter of DS) frequency response, upward signal (upload signal, US) frequency response or other D-CMTS frequency mixer 200 is tested.Therefore, in some embodiments of the invention, test module 123 can comprise the reflection measurement device 123a being electrically connected probe 111.Reflection measurement device 123a is by popping one's head in 111, and whether the reflection testing the port 201 of D-CMTS frequency mixer 200 to be measured meets one is preset reflection requirement.For example, when can be less than-16db in the reflection measured by the port 201 of self-test D-CMTS frequency mixer 200 to be measured, be judged to meet and preset reflection requirement.In addition, reflection measurement device 123a, by popping one's head in 111, tests the reflection of each frequency of the port 201 of D-CMTS frequency mixer 200 to be measured.For example, the frequency of test can comprise 5Mhz to 65Mhz, 87Mhz to 1002Mhz or other need test the frequency of reflection.Reflection measurement device 123a can every a predeterminated frequency interval, the reflection of the port 201 of test D-CMTS frequency mixer 200.But, in other embodiments of the invention, can according to the actual requirements, the frequency that reflection requires or tests is preset in adjustment, is not limited to disclosure of the present invention.
In other embodiments of the present invention, test module 123 can comprise the CATV frequency response tester 123b being electrically connected probe 111,112.CATV frequency response tester 123b is by probe 111,112, and whether a CATV frequency response of the port 201,202 of test D-CMTS frequency mixer 200 meets a predeterminated frequency response requirement.For example, when can be about 7db in the CATV frequency response measured by the port 201,202 of self-test D-CMTS frequency mixer 200 to be measured, be judged to meet predeterminated frequency response requirement.In addition, CATV frequency response tester 123b, by popping one's head in 111,112, tests the CATV frequency response of each frequency of the port 201,202 of D-CMTS frequency mixer 200 to be measured.For example, the frequency of test can comprise 87Mhz to 1002Mhz or other need test the frequency of CATV frequency response.CATV frequency response tester 123b can every a predeterminated frequency interval, the CATV frequency response of the port 201,202 of test D-CMTS frequency mixer 200.But, in other embodiments of the invention, can according to the actual requirements, the frequency that the response of adjustment predeterminated frequency requires or tests, is not limited to disclosure of the present invention.
In other embodiments of the present invention, test module 123 can comprise the DS frequency response tester 123c being electrically connected probe 111,112.DS frequency response tester 123c is by probe 111,112, and whether a DS frequency response of the port 201,202 of test D-CMTS frequency mixer 200 meets a predeterminated frequency response requirement.For example, when can be about-8db in the DS frequency response measured by the port 201,202 of self-test D-CMTS frequency mixer 200 to be measured, be judged to meet predeterminated frequency response requirement.In addition, DS frequency response tester 123c, by popping one's head in 111,112, tests the DS frequency response of each frequency of the port 201,202 of D-CMTS frequency mixer 200 to be measured.For example, the frequency of test can comprise 87Mhz to 1002Mhz or other need test the frequency of DS frequency response.DS frequency response tester 123c can every a predeterminated frequency interval, the DS frequency response of the port 201,202 of test D-CMTS frequency mixer 200.But, in other embodiments of the invention, can according to the actual requirements, the frequency that the response of adjustment predeterminated frequency requires or tests, is not limited to disclosure of the present invention.
In other embodiments of the present invention, test module 123 can comprise the US frequency response tester 123d being electrically connected probe 111,112.US frequency response tester 123d is by probe 111,112, and whether a US frequency response of the port 201,202 of test D-CMTS frequency mixer 200 meets a predeterminated frequency response requirement.For example, when can be about-8db in the US frequency response measured by the port 201,202 of self-test D-CMTS frequency mixer 200 to be measured, be judged to meet predeterminated frequency response requirement.In addition, US frequency response tester 123d, by popping one's head in 111,112, tests the US frequency response of each frequency of the port 201,202 of D-CMTS frequency mixer 200 to be measured.For example, the frequency of test can comprise 5Mhz to 65Mhz or other need test the frequency of US frequency response.US frequency response tester 123d can every a predeterminated frequency interval, the US frequency response of the port 201,202 of test D-CMTS frequency mixer 200.But, in other embodiments of the invention, can according to the actual requirements, the frequency that the response of adjustment predeterminated frequency requires or tests, is not limited to the disclosure of inventing.
In other embodiments of the present invention, test module 123 can comprise the flatness tester 123e being electrically connected probe 111,112.Flatness tester 123e is by probe 111,112, and whether the flatness of multiple signals of port 201,202 reception of test D-CMTS frequency mixer 200 meets a preset range.For example, can, when the flatness of the signal measured by the port 201,202 of self-test D-CMTS frequency mixer 200 to be measured is +/-0.75db, be judged to meet preset range.But, in other embodiments of the invention, can according to the actual requirements, adjustment preset range, is not limited to disclosure of the present invention.
In other embodiments of the present invention, test module 123 can comprise the isolation degree test device 123f being electrically connected probe 111,112.Isolation degree test device 123f is by probe 111,112, and whether the isolation between multiple signals of the port 201,202 of test D-CMTS frequency mixer 200 meets one is preset insulated degree requirement.For example, when can be greater than 45db at the isolation measured by the port 201,202 of self-test D-CMTS frequency mixer 200 to be measured, be judged to meet and preset insulated degree requirement.But, in other embodiments of the invention, can according to the actual requirements, the frequency that adjustment is preset insulated degree requirement or tested, is not limited to disclosure of the present invention.
Although the present invention with execution mode openly as above; so itself and be not used to limit the present invention; any those of ordinary skill in the art; not departing from the spirit and scope of the present invention; when doing various variation and retouching, the those as defined in claim that therefore protection scope of the present invention is worked as depending on the application is as the criterion.
Claims (9)
1. a testing apparatus for distributed cable television modem terminal system frequency mixer, is characterized in that, comprise:
At least one probe, in order to insert at least one port of a distributed cable television modem terminal system frequency mixer to be measured; And
One processing components, be electrically connected described at least one probe, wherein said processing components comprises:
One script runs module, runs a test script;
One load-on module, loads a virtual instrument software framework; And
One test module, according to run described test script, require the described virtual instrument software framework loaded, by described at least one probe, described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is tested.
2. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, described test module comprises:
One reflection measurement device, is electrically connected described at least one probe, and whether meets a default reflection requirement by the reflection of described at least one port of the described distributed cable television modem terminal system frequency mixer to be measured of described at least one probe test.
3. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described test module comprises:
One cable TV frequency response tester, be electrically connected those probes, and whether meet a predeterminated frequency response requirement by a cable TV frequency response of the described port of the described distributed cable television modem terminal system frequency mixer to be measured of those probe tests.
4. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described test module comprises:
One downstream signal frequencies response test device, be electrically connected described probe, and whether meet a predeterminated frequency response requirement by a downstream signal frequencies response of the described port of the described distributed cable television modem terminal system frequency mixer to be measured of described probe test.
5. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described test module comprises:
One upward signal frequency response tester, be electrically connected described probe, and by described probe, whether the downstream signal frequencies response testing the described port of described distributed cable television modem terminal system frequency mixer to be measured meets a predeterminated frequency response requirement.
6. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described test module comprises:
One flatness tester, is electrically connected described probe, and by described probe, whether the flatness of testing multiple signals of the described port of described distributed cable television modem terminal system frequency mixer to be measured meets a preset range.
7. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described test module comprises:
One isolation degree test device, is electrically connected described probe, and by described probe, whether the isolation testing multiple signals of the described port of described distributed cable television modem terminal system frequency mixer to be measured meets one is preset insulated degree requirement.
8. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the testing apparatus of described distributed cable television modem terminal system frequency mixer also comprises a storage assembly, and described processing components also comprises:
One read module, be electrically connected described storage assembly, and the described virtual instrument software framework that requirement loads, read the data of carrying out testing gained by described at least one port of described at least one probe to described distributed cable television modem terminal system frequency mixer to be measured, and be recorded to described storage assembly.
9. the testing apparatus of distributed cable television modem terminal system frequency mixer as claimed in claim 1, it is characterized in that, the testing apparatus of described distributed cable television modem terminal system frequency mixer also comprises a display module or loudspeaker, and the number of described at least one probe is multiple, the number of described at least one port of described distributed cable television modem terminal system frequency mixer to be measured is multiple, and described processing components also comprises:
One reminding module, is electrically connected described display module or described loudspeaker, and drives described display module or described loudspeaker to produce an information, in order to point out the annexation between described probe and described port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410345750.2A CN104796687A (en) | 2014-01-21 | 2014-07-18 | Testing device for frequency mixer of distributed cable mode termination system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014200389335 | 2014-01-21 | ||
| CN201420038933 | 2014-01-21 | ||
| CN201410345750.2A CN104796687A (en) | 2014-01-21 | 2014-07-18 | Testing device for frequency mixer of distributed cable mode termination system |
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| CN104796687A true CN104796687A (en) | 2015-07-22 |
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| CN201410345750.2A Pending CN104796687A (en) | 2014-01-21 | 2014-07-18 | Testing device for frequency mixer of distributed cable mode termination system |
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| CN112803897A (en) * | 2020-12-30 | 2021-05-14 | 四川德骏智造科技有限公司 | Terahertz fundamental wave frequency mixing module |
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| CN110333417A (en) * | 2019-07-08 | 2019-10-15 | 高新兴物联科技有限公司 | Modulation /demodulation module test system and method |
| CN112803897A (en) * | 2020-12-30 | 2021-05-14 | 四川德骏智造科技有限公司 | Terahertz fundamental wave frequency mixing module |
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