CN105356940A - CATV product test system and method - Google Patents
CATV product test system and method Download PDFInfo
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- CN105356940A CN105356940A CN201510869402.XA CN201510869402A CN105356940A CN 105356940 A CN105356940 A CN 105356940A CN 201510869402 A CN201510869402 A CN 201510869402A CN 105356940 A CN105356940 A CN 105356940A
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- catv
- signal
- test
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
-
- 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
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/108—Adaptations for transmission by electrical cable the cable being constituted by a pair of wires
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention provides a CATV product test system and a method. The CATV product test system comprises a television signal generator which is used for outputting a fixed television signal; a light emitter is connected to the output terminal of the television signal generator; a light attenuator is connected to the output terminal of the light emitter; a multipath splitter is connected to the light attenuator; the plurality of tested devices are connected to the multiple output terminals of the multipath splitter in one-to-one correspondence for receiving light signals outputted by the multipath splitter through optical ports; multiple test data analysis devices are connected to the CATV ports of the multiple tested devices in one-to-one correspondence for receiving video signals of the connected tested device and obtaining the test result of the connected tested device according to the received video signals. The technical scheme of the invention can improve the utilization rate of the test device, reduces the cost and improves the practical testing efficiency of the production line.
Description
Technical field
The present invention relates to a kind of measuring technology, particularly relate to a kind of CATV product testing system and method.
Background technology
CATV (cable television network) is to connect TV station and television set with road, broadband coaxial cable.So-called road, broadband coaxial cable is exactly by columnar external conductor and consists of diameter the center conductor at center less than the cable of 2 centimeters.Coaxial cable has the characteristic transmitting broadband band domain signal, and general conventional coaxial cable about can transmit the frequency of 70 to 270 MHz (MHz), therefore can transmit many channels simultaneously.CATV testing scheme normally adopts network analyzer OUT port to connect optical sender connection optical attenuator to equipment under test DUT (Deviceundertest) by 75 Ohm radio frequency lines, signal is imported into by network analyzer IN port by DUT, normal by network analyzer analytic signal determination properties of product.Current CATV testing scheme can only be tested for separate unit CATV product, and testing efficiency is low, and utilization rate of equipment and installations is low.During batch production, production capacity is too low, average artificial high cost.
Given this, how to find a kind of CATV functional test bottleneck problem solved in CATV product test, improve the technical scheme of producing line CATV functional test efficiency and just become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of CATV product testing system and method, can only carry out separate unit test cause the problem of CATV functional test inefficiency for solving CATV product in prior art.
For achieving the above object and other relevant objects, the invention provides a kind of CATV product testing system, described CATV product testing system comprises: a television signal generator, and described television signal generator is for exporting a fixing TV signal; An optical sender, the input of described optical sender is connected with the output of described television signal generator, and the TV signal for being exported by described television signal generator converts light signal to and exports; An optical attenuator, is connected with the output of described optical sender, exports after decaying to light signal; A multichannel optical splitter, the input of described multichannel optical splitter is connected with described optical attenuator, for receiving the light signal that described optical attenuator exports; Multiple equipment under test, is connected one by one by multiple outputs of light mouth with described multichannel optical splitter, for receiving the light signal that described multichannel optical splitter exports; Multiple stage test data analysis equipment, being connected with the CATV mouth one_to_one corresponding of described multiple equipment under test respectively, for receiving the vision signal of connected equipment under test, and drawing the test result of connected equipment under test according to received vision signal.
Alternatively, be connected by the radio frequency line of 75 ohm between described television signal generator with described optical sender.
Alternatively, described TV signal comprises Television Digital analog signal.
Alternatively, the CATV mouth of described equipment under test is connected with the radio frequency line by 75 ohm between described test data analysis equipment.
Alternatively, described test data analysis equipment comprises the smart machine with video frequency collection card.
Alternatively, described test data analysis equipment draws the test result of described equipment under test by the signal that the vision signal received by analysis and described television signal generator are launched.
Alternatively, described optical transmitting set output wavelength is the light signal of 1550nm.
Alternatively, the light signal that exports for described optical transmitting set of decaying of described optical attenuator with the light signal size guaranteed described equipment under test light mouth and receive between-8 ~+2dBm.
The present invention also provides a kind of CATV product test method, be applied to CATV product testing system as above, described CATV product test method comprises: television signal generator exports a fixing TV signal, described TV signal converts light signal to by optical transmitting set, and outputs to multichannel optical splitter after being decayed to described light signal by optical attenuator; Identical light signal is outputted to the light mouth of multiple equipment under test by multichannel optical splitter by multiple output, and outputs in test data analysis equipment by the CATV mouth of described equipment under test by vision signal; Described test data analysis equipment obtains the test result of connected equipment under test to received vision signal analysis.
Alternatively, described test data analysis equipment obtains the test result of connected equipment under test specific implementation to received vision signal analysis comprises: the TV signal that described vision signal and television signal generator are launched analysed and compared, when the result that both analyse and compare does not have deviation, test result is Pass; When the result that both analyse and compare has deviation, test result is Fail.
As mentioned above, a kind of CATV product testing system of the present invention and method, have following beneficial effect: improve testing equipment utilance, reduces cost and drop into, improve and produce the actual tested productivity of line.Operationally, only need will organize product placement to be measured to corresponding port more, start to test, just can reach the effect of the synchronous or asynchronous test of many set products, and ensure the accurate judgement of CATV function.
Accompanying drawing explanation
Fig. 1 is shown as the module diagram of an embodiment of CATV product testing system of the present invention.
Fig. 2 is shown as the structural representation of an embodiment of CATV product testing system of the present invention.
Fig. 3 is shown as the schematic flow sheet of an embodiment of CATV product test method of the present invention.
Element numbers explanation
1CATV product testing system
11 television signal generators
12 optical senders
13 optical attenuators
14 multichannel optical splitters
15 equipment under tests
16 test data analysis equipment
S1 ~ S3 step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
The invention provides a kind of CATV product testing system.Described CATV product testing system is used for carrying out mass test to CATV product, can test multiple CATV product simultaneously.In one embodiment, as shown in Figure 1, described CATV product testing system 1 comprises the test data analysis equipment that a television signal generator 11, optical sender 12, optical attenuator 13, multichannel optical splitter 14, multiple equipment under test 15 and multiple stage and equipment under test 15 connect one to one.Wherein:
Described television signal generator 11 is for exporting a fixing TV signal.Described TV signal comprises Television Digital analog signal.
The input of described optical sender 12 is connected with the output of described television signal generator 11, and the TV signal for being exported by described television signal generator 11 converts light signal to and exports.Radio frequency line by 75 ohm between described television signal generator 11 with described optical sender 12 is connected.Described optical transmitting set 12 output wavelength is the light signal of 1550nm (nanometer).
The input of described optical attenuator 13 is connected with the output of described optical sender 12, after decaying to light signal, export the light signal after carrying out attenuation processing.
The input of described multichannel optical splitter 14 is connected with the output of described optical attenuator 13, for receiving the light signal that described optical attenuator 13 exports.The light signal that described optical attenuator exports for described optical transmitting set of decaying with the light signal size guaranteed described equipment under test light mouth and receive between-8 ~+2dBm.DBm can represent decibel millivolt, or dBm.DBm is a unit representing power absolute value, and computing formula is: 10lg performance number/1mW.Such as: if transmitting power is 1mW, the value after converting by dBm unit should be: 10lg1mW/1mW=0dBm.
Multiple equipment under test 15 is connected one by one by multiple outputs of light mouth with described multichannel optical splitter 14, for receiving the light signal that described multichannel optical splitter 14 exports.The light mouth of described equipment under test 15 is connected by the output of optical fiber with described multichannel optical splitter 14.
Multiple stage test data analysis equipment 16 is connected with the CATV mouth one_to_one corresponding of described multiple equipment under test 15 respectively, for receiving the vision signal of connected equipment under test 15, and draw the test result of connected equipment under test 15 according to received vision signal.Described test data analysis equipment 16 comprises the smart machine with video frequency collection card.In one embodiment, the CATV mouth of described equipment under test 15 is connected with the radio frequency line by 75 ohm between described test data analysis equipment 16.Described test data analysis equipment 16 draws the test result of described equipment under test by the signal that the vision signal received by analysis and described television signal generator are launched.
In one embodiment, as shown in Figure 2, described CATV product testing system comprises: one for exporting the television signal generator of a fixing TV signal; Described television signal generator is connected with an optical sender by 75 Ohm radio frequency lines, and the TV signal that described television signal generator exports is converted to light signal and exports by described optical sender; The light signal that optical sender exports outputs in a multichannel optical splitter by an optical attenuator after decaying to light signal, and described multichannel optical splitter can be 16 mouthfuls or 24 mouthfuls; In the present embodiment, described multichannel optical splitter has 4 outputs to be connected to 4 equipment under tests (DUT1, DUT2, DUT3, DUT4) respectively, and each equipment under test is connected with a Test Host (test data analysis equipment) one_to_one corresponding by 75 Ohm radio frequency lines.Each Test Host comprises a video frequency collection card, is received the vision signal of the equipment under test connected by described video frequency collection card.Test Host draws the test result of connected equipment under test according to received vision signal.DUT1 is put and video acquisition card port on light mouth connecting fiber 1, CATV mouth connecting test main frame 1 at station 1 when equipment under test DUT (i.e. CATV product) tests.DUT2 light mouth connecting fiber 2, CATV mouth connects the video acquisition card port on Test Host 2 by that analogy.Whether the vision signal that in test, Test Host testing results formula is collected by video frequency collection card analysis and the signal fusing that television signal generator is launched have deviation to return test result Pass or Fail, are judged the quality of products C ATV function by test result.
The present invention also provides a kind of CATV product test method, is applied to CATV product testing system as above.In one embodiment, as shown in Figure 3, described CATV product test method comprises:
Step S1, television signal generator exports a fixing TV signal, and described TV signal converts light signal to by optical transmitting set, and outputs to multichannel optical splitter after being decayed to described light signal by optical attenuator.
Step S2, identical light signal is outputted to the light mouth of multiple equipment under test by multichannel optical splitter by multiple output, and vision signal is outputted in test data analysis equipment by the CATV mouth of described equipment under test.
Step S3, described test data analysis equipment obtains the test result of connected equipment under test to received vision signal analysis.In one embodiment, described test data analysis equipment obtains the test result of connected equipment under test specific implementation to received vision signal analysis comprises: the TV signal that described vision signal and television signal generator are launched analysed and compared, when the result that both analyse and compare does not have deviation, test result is Pass; When the result that both analyse and compare has deviation, test result is Fail.
In one embodiment, described CATV product test method is by television signal generator, and launch a TV signal and be connected to optical sender by RFCable (radio frequency line), the light that is added to is penetrated in machine.The signal of superposition is penetrated machine from light and is out connected to multichannel Light splitter toy by Fiber connection optical attenuator, enters into product DUT light mouth to be measured.The superposed signal imported into is isolated TV signal and is connected video frequency collection card from the output of CATV mouth by RFCable by DUT, and whether the vision signal integrity degree determination products C ATV function that test program is gathered by video frequency collection card is normal.
In sum, a kind of CATV product testing system of the present invention and method can improve testing equipment utilance, reduce cost and drop into, improve and produce the actual tested productivity of line.Operationally, only need will organize product placement to be measured to corresponding port more, start to test, just can reach the effect of the synchronous or asynchronous test of many set products, and ensure the accurate judgement of CATV function.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a CATV product testing system, is characterized in that, described CATV product testing system comprises:
A television signal generator, described television signal generator is for exporting a fixing TV signal;
An optical sender, the input of described optical sender is connected with the output of described television signal generator, and the TV signal for being exported by described television signal generator converts light signal to and exports;
An optical attenuator, is connected with the output of described optical sender, exports after decaying to light signal;
A multichannel optical splitter, the input of described multichannel optical splitter is connected with described optical attenuator, for receiving the light signal that described optical attenuator exports;
Multiple equipment under test, is connected one by one by multiple outputs of light mouth with described multichannel optical splitter, for receiving the light signal that described multichannel optical splitter exports;
Multiple stage test data analysis equipment, being connected with the CATV mouth one_to_one corresponding of described multiple equipment under test respectively, for receiving the vision signal of connected equipment under test, and drawing the test result of connected equipment under test according to received vision signal.
2. CATV product testing system according to claim 1, is characterized in that: described TV signal comprises Television Digital analog signal.
3. CATV product testing system according to claim 1, be is characterized in that: be connected by the radio frequency line of 75 ohm between described television signal generator with described optical sender.
4. CATV product testing system according to claim 1, is characterized in that: described optical transmitting set output wavelength is the light signal of 1550nm.
5. CATV product testing system according to claim 1, is characterized in that: the light signal that described optical attenuator exports for described optical transmitting set of decaying with the light signal size guaranteed described equipment under test light mouth and receive between-8 ~+2dBm.
6. CATV product testing system according to claim 1, is characterized in that: the CATV mouth of described equipment under test is connected with the radio frequency line by 75 ohm between described test data analysis equipment.
7. CATV product testing system according to claim 1, is characterized in that: described test data analysis equipment comprises the smart machine with video frequency collection card.
8. CATV product testing system according to claim 1, is characterized in that: described test data analysis equipment draws the test result of described equipment under test by the signal that the vision signal received by analysis and described television signal generator are launched.
9. a CATV product test method, is characterized in that: described CATV product test method comprises:
Television signal generator exports a fixing TV signal, and described TV signal converts light signal to by optical transmitting set, and outputs to multichannel optical splitter after being decayed to described light signal by optical attenuator;
Identical light signal is outputted to the light mouth of multiple equipment under test by multichannel optical splitter by multiple output, and outputs in test data analysis equipment by the CATV mouth of described equipment under test by vision signal;
Described test data analysis equipment obtains the test result of connected equipment under test to received vision signal analysis.
10. CATV product test method according to claim 9, it is characterized in that: described test data analysis equipment obtains the test result of connected equipment under test specific implementation to received vision signal analysis comprises: the TV signal that described vision signal and television signal generator are launched is analysed and compared, when the result that both analyse and compare does not have deviation, test result is Pass; When the result that both analyse and compare has deviation, test result is Fail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510869402.XA CN105356940A (en) | 2015-12-01 | 2015-12-01 | CATV product test system and method |
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| CN201510869402.XA CN105356940A (en) | 2015-12-01 | 2015-12-01 | CATV product test system and method |
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| CN105356940A true CN105356940A (en) | 2016-02-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412565A (en) * | 2016-08-31 | 2017-02-15 | 江苏银河电子股份有限公司 | Testing system and method for wired light tuner |
| CN111901583A (en) * | 2020-05-22 | 2020-11-06 | 联宝(合肥)电子科技有限公司 | HDMI signal detection method and device and HDMI signal attenuator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070173202A1 (en) * | 2006-01-11 | 2007-07-26 | Serconet Ltd. | Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting |
| CN101997607A (en) * | 2010-12-01 | 2011-03-30 | 成都优博创技术有限公司 | Method for testing cost of optical channel |
| CN102636741A (en) * | 2012-04-27 | 2012-08-15 | 北京星河康帝思科技开发有限公司 | Method and system for testing circuit board |
| CN202998099U (en) * | 2012-12-31 | 2013-06-12 | 上海宽岱电讯科技发展有限公司 | Passive fiber network test system |
| CN203522751U (en) * | 2013-09-24 | 2014-04-02 | 杭州万隆光电设备股份有限公司 | CATV network optical receiver |
| CN104408001A (en) * | 2014-12-11 | 2015-03-11 | 哈尔滨工程大学 | High-accuracy multipath data synchronous acquisition device |
| CN104836614A (en) * | 2015-05-26 | 2015-08-12 | 太仓市同维电子有限公司 | Method for testing performance of CATV product |
-
2015
- 2015-12-01 CN CN201510869402.XA patent/CN105356940A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070173202A1 (en) * | 2006-01-11 | 2007-07-26 | Serconet Ltd. | Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting |
| CN101997607A (en) * | 2010-12-01 | 2011-03-30 | 成都优博创技术有限公司 | Method for testing cost of optical channel |
| CN102636741A (en) * | 2012-04-27 | 2012-08-15 | 北京星河康帝思科技开发有限公司 | Method and system for testing circuit board |
| CN202998099U (en) * | 2012-12-31 | 2013-06-12 | 上海宽岱电讯科技发展有限公司 | Passive fiber network test system |
| CN203522751U (en) * | 2013-09-24 | 2014-04-02 | 杭州万隆光电设备股份有限公司 | CATV network optical receiver |
| CN104408001A (en) * | 2014-12-11 | 2015-03-11 | 哈尔滨工程大学 | High-accuracy multipath data synchronous acquisition device |
| CN104836614A (en) * | 2015-05-26 | 2015-08-12 | 太仓市同维电子有限公司 | Method for testing performance of CATV product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412565A (en) * | 2016-08-31 | 2017-02-15 | 江苏银河电子股份有限公司 | Testing system and method for wired light tuner |
| CN111901583A (en) * | 2020-05-22 | 2020-11-06 | 联宝(合肥)电子科技有限公司 | HDMI signal detection method and device and HDMI signal attenuator |
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Application publication date: 20160224 |