CN112203081A - Photoelectric signal device and method - Google Patents
Photoelectric signal device and method Download PDFInfo
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- CN112203081A CN112203081A CN202011011022.XA CN202011011022A CN112203081A CN 112203081 A CN112203081 A CN 112203081A CN 202011011022 A CN202011011022 A CN 202011011022A CN 112203081 A CN112203081 A CN 112203081A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
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Abstract
The invention discloses a HDMI AOC cable testing device and a method, wherein the HDMI AOC cable testing device comprises a signal emitter, an emission testing board, a HDMI AOC cable to be tested and an oscilloscope, a testing signal is released by the signal emitter, then the emission testing board forwards the HDMI AOC cable to be tested, the testing signal enters an optical port of the oscilloscope through an optical fiber array, the oscilloscope performs eye pattern testing and displays a testing result, and therefore the optical eye pattern testing of the HDMI AOC cable to be tested is achieved. The traditional HDMI cable can only transmit electric signals, so that the problem that the traditional testing method has insufficient testing items when facing the photoelectric hybrid cable is caused, and the problem that the photoelectric hybrid cable cannot be comprehensively tested in the prior art is solved; the technical effect of more comprehensively testing the photoelectric hybrid cable is achieved.
Description
Technical Field
The invention relates to the technical field of HDMI AOC cable testing, in particular to a photoelectric signal device and a photoelectric signal method.
Background
The HDMI (High Definition Multimedia Interface Cable) can transmit uncompressed High Definition video and multi-channel audio data with High quality, the HDMI protocol is gradually updated along with the development of science and technology, the transmission bandwidth of the HDMI gradually increases, which puts forward higher requirements on the HDMI, the traditional pure Cable is limited by Cable materials and Cable diameters, and the bandwidth and distance of data transmission gradually cannot meet the requirements.
An HDMI AOC Cable (HDMI Active Optical Cable ) is an HDMI line which is manufactured into an HDMI signal transmission line by using Optical fibers and integrates a photoelectric conversion line of the HDMI signal transmission line at an interface, the HDMI Cable needs to be strictly tested when leaving a factory to ensure the yield of the HDMI Cable leaving the factory, and the traditional testing device and method are designed and tested for pure electric cables and can not comprehensively test the HDMI AOC Cable.
Disclosure of Invention
The invention mainly aims to provide a HDMI AOC cable testing device and a HDMI AOC cable testing method, and aims to solve the problems that in the prior art, HDMI AOC cables are not comprehensively tested, and the delivery yield of the HDMI AOC cables is low.
In order to achieve the purpose, the invention provides an HDMI AOC cable testing device, which comprises a signal emitter, a transmitting and testing board, an HDMI AOC cable to be tested and an oscilloscope, wherein the signal emitter is used for emitting a signal to be tested; the signal emitter is connected with the emission test board, the emission test board is connected with the HDMI AOC cable to be tested, and the HDMI AOC cable to be tested is connected with an optical port of the oscilloscope through an optical fiber array;
the signal transmitter is used for transmitting an eye pattern test signal;
the emission test board is used for receiving the eye pattern test signal, converting the eye pattern test signal into an eye pattern HDMI signal and then sending the eye pattern HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested is used for converting the eye pattern HDMI signal into an optical signal and sending the optical signal to an optical port of the oscilloscope through the optical fiber array;
and the oscilloscope is used for carrying out eye pattern test on the signals received by the optical port of the oscilloscope and displaying the test result.
Preferably, the HDMI AOC cable testing apparatus further comprises a reception test board; the HDMI AOC cable to be tested is connected with the receiving test board, and the receiving test board is connected with the oscilloscope;
the HDMI AOC cable to be tested is also used for converting the eye pattern HDMI signal into an optical signal for transmission, and after the transmission is finished, the optical signal is restored into the eye pattern HDMI signal after the transmission is finished and is sent to the receiving test board;
the receiving test board is used for restoring the transmitted eye pattern HDMI signal into a transmitted eye pattern test signal and sending the eye pattern test signal to the oscilloscope;
the oscilloscope is further used for carrying out eye pattern test on the received eye pattern test signal after transmission is finished and displaying a test result.
Preferably, the HDMI AOC cable testing device further comprises an error detector; the transmitting end of the error code instrument is connected with the transmitting test board, the transmitting test board is connected with the receiving test board through the HDMI AOC cable to be tested, and the receiving test board is connected with the receiving end of the error code instrument; wherein,
the error code instrument is used for sending an error code test signal to the emission test board;
the emission test board is also used for receiving the error code test signal, converting the error code test signal into an error code HDMI signal and sending the error code HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested is also used for converting the error code HDMI signal into an optical signal for transmission, and reducing the optical signal into an error code HDMI signal after the transmission is finished and sending the error code HDMI signal to the receiving test board after the transmission is finished;
the receiving test board is also used for receiving the error code HDMI signals after the transmission is finished, reducing the error code HDMI signals into error code test signals after the transmission is finished, and sending the error code test signals to the error code device;
the error code instrument is also used for receiving the error code test signal which is sent by the receiving test board and is transmitted after the transmission is finished, carrying out error code test according to the error code test signal and the error code test signal which is transmitted after the transmission is finished, and displaying the error code rate.
Preferably, the HDMI AOC cable testing apparatus further includes an HDMI output device and a playback device; the HDMI output equipment is connected with the playing equipment through the HDMI AOC cable to be tested; wherein
The HDMI output equipment is used for decoding the test video and outputting a corresponding HDMI audio/video signal;
the HDMI AOC cable to be tested is also used for converting the HDMI audio and video signals into optical signals for transmission, and restoring the optical signals into the HDMI audio and video signals after transmission and sending the HDMI audio and video signals to the playing equipment after transmission is finished;
and the playing equipment is used for playing the decoded HDMI audio/video signals so as to complete the real machine playing test.
The invention also provides an HDMI AOC cable testing method, which comprises the following steps:
the signal emitter emits an eye pattern test signal;
the transmitting test board receives the eye pattern test signal, converts the eye pattern test signal into an eye pattern HDMI signal and then sends the eye pattern HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested converts the eye pattern HDMI signal into an optical signal and sends the optical signal to an optical port of an oscilloscope through the optical fiber array;
and the oscilloscope performs eye pattern test on the signals received by the optical port of the oscilloscope, and displays the test result.
Preferably, after the step of receiving, by the launch test board, the eye pattern test signal, converting the eye pattern test signal into an eye pattern HDMI signal, and sending the eye pattern HDMI signal to the HDMI AOC cable to be tested, the HDMI AOC cable test method further includes:
the HDMI AOC cable to be tested converts the eye pattern HDMI signal into an optical signal for transmission, restores the optical signal into the eye pattern HDMI signal after the transmission is finished, and sends the eye pattern HDMI signal to the receiving test board;
the receiving test board restores the transmitted eye pattern HDMI signal into a transmitted eye pattern test signal and sends the eye pattern test signal to the oscilloscope;
and the oscilloscope performs eye pattern test on the received eye pattern test signal after the transmission is finished, and displays a test result.
Preferably, the HDMI AOC cable test method further includes the steps of:
the error code instrument sends an error code test signal to the emission test board;
the emission test board receives the error code test signal, converts the error code test signal into an error code HDMI signal and sends the error code HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested converts the error code HDMI signal into an optical signal for transmission, restores the optical signal into the error code HDMI signal after transmission is finished, and sends the error code HDMI signal to the receiving test board;
the receiving test board receives the error code HDMI signals after the transmission is finished, restores the error code HDMI signals into error code test signals after the transmission is finished, and sends the error code HDMI signals to the error code device;
and the error code instrument receives the transmitted error code test signal sent by the receiving test board, performs error code test according to the error code test signal and the transmitted error code test signal, and displays the error code.
Preferably, the HDMI AOC cable test method further includes the steps of:
the HDMI output equipment decodes the test video and outputs a corresponding HDMI audio/video signal;
the HDMI AOC cable to be tested converts the HDMI audio/video signals into optical signals for transmission, restores the optical signals into the HDMI audio/video signals after transmission is finished, and sends the HDMI audio/video signals to the playing equipment;
and the playing equipment decodes the HDMI audio/video signal and then plays the signal so as to complete the real machine playing test.
The technical scheme of the invention realizes the optical eye pattern test of the HDMI AOC cable through the signal transmitter, the transmitting test board and the oscilloscope, the signal transmitter transmits an eye pattern test signal, the transmitting test board converts the signal into an HDMI signal to be tested and sends the HDMI signal to the HDMI AOC cable to be tested, and then the optical fiber array connected with the HDMI AOC cable leads the optical signal out and inputs the optical signal into an optical port of the oscilloscope to complete the optical eye pattern test; the technical scheme of the invention solves the problem that the HDMI AOC cable test is not comprehensive in the prior art, and achieves the technical effect of performing the optical eye pattern test on the HDMI AOC cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of an automatic recording circuit according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of an automatic recording circuit according to another embodiment of the present invention;
FIG. 3 is a functional block diagram of an automatic recording circuit according to another embodiment of the present invention;
FIG. 4 is a functional block diagram of an automatic recording circuit according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
500 | |
| 200 | |
600 | |
| 300 | HDMI AOC cable to be tested | 700 | |
| 400 | |
800 | Play device |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The principles and features of this invention are described below in conjunction with specific embodiments, the examples given are intended to illustrate the invention and are not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides an HDMI AOC cable testing apparatus, which includes a signal transmitter 100, a transmission test board 200, an HDMI AOC cable 300 to be tested, and an oscilloscope 400; the signal transmitter 100 is connected to the transmitting test board 200, the transmitting test board 200 is connected to the HDMI AOC cable 300 to be tested, and the HDMI AOC cable 300 to be tested is connected to an optical port of the oscilloscope 400 through an optical fiber array;
the signal transmitter 100 is configured to transmit an eye pattern test signal;
the emission test board 200 is configured to receive the eye pattern test signal, convert the eye pattern test signal into an eye pattern HDMI signal, and send the eye pattern HDMI signal to the HDMI AOC cable 300 to be tested;
the HDMI AOC cable 300 to be tested is configured to convert the eye pattern HDMI signal into an optical signal and send the optical signal to an optical port of the oscilloscope 400 through the optical fiber array;
the oscilloscope 400 is configured to perform an eye diagram test on a signal received by the optical port thereof, and display a test result.
It should be noted that, the signal quality of the eye pattern test signal transmitted by the signal transmitter 100 and the eye pattern HDMI signal received by the HDMI AOC cable must be good enough to determine the transmission performance of the HDMI AOC cable by observing whether the oscilloscope 400 has noise, wherein the transmission performance of the cable for connecting the signal transmitter 100 and the transmission test board 200 should be significantly better than that of the HDMI AOC cable, and the embodiment uses the high-speed radio frequency line as the connection line between the signal transmitter 100 and the transmission test board 200 to reduce the degradation of the transmission signal caused by the connection cable, so that the correlation between the result of the eye pattern test and the signal transmission quality of the HDMI AOC cable is stronger.
It should be emphasized that, in this embodiment, the optical fiber array is used to convert the received signal into the optical signal in the HDMI AOC cable, and then the converted optical signal is led out to the optical port of the oscilloscope 400 for eye pattern testing, so as to obtain to a great extent whether the HDMI AOC cable converts the electrical signal into the optical signal and whether there is signal loss or whether there is noise clutter and other signal quality degradation.
It is easy to understand that the connection point of the optical fiber array and the HDMI AOC cable is located at the end of the HDMI AOC cable to test the optical signal transmission capability of the HDMI AOC cable as much as possible, and at the same time, the diameter of the bent circle of the HDMI AOC cable should be greater than 10 cm, and usually, during the test process, the excess length of the HDMI AOC cable is usually encircled into a circle with a diameter of about 20 cm.
This embodiment is through setting up signal transmitter 100 transmission eye pattern test signal, rethread transmission test board 200 converts eye pattern test signal into eye pattern HDMI signal output to HDMI AOC cable to the light signal of transmission sends oscilloscope 400 light mouthful in drawing forth the HDMI AOC cable through the light array, has realized the light eye pattern test to the HDMI AOC cable, has solved the HDMI AOC cable test that exists among the prior art problem comprehensive inadequately, reaches the technological effect of carrying out the light eye pattern test to the HDMI AOC cable.
As shown in fig. 2, the HDMI AOC cable testing apparatus of the present invention further includes a receiving test board 500; the HDMI AOC cable 300 to be tested is connected to the receiving test board 500, and the receiving test board 500 is connected to the oscilloscope 400;
the HDMI AOC cable 300 to be tested is further configured to convert the eye pattern HDMI signal into an optical signal for transmission, and restore the optical signal into an eye pattern HDMI signal after transmission and send the eye pattern HDMI signal to the receiving test board 500 after transmission;
the receiving test board 500 is configured to restore the transmitted eye pattern HDMI signal to a transmitted eye pattern test signal and send the eye pattern test signal to the oscilloscope 400;
the oscilloscope 400 is further configured to perform an eye pattern test on the received eye pattern test signal after the transmission is completed, and display a test result.
It is easy to understand that, because the process of converting the optical signal into the electrical signal by the HDMI AOC cable is not tested in the optical eye pattern test, the electrical signal output by the HDMI AOC cable needs to be tested again, in this embodiment, the receiving test board 500 is added, the eye pattern HDMI signal after the transmission is restored to the eye pattern test signal after the transmission is completed, and the eye pattern test signal is sent to the oscilloscope 400 through the high-speed radio frequency line to perform the electrical eye pattern test.
It should be noted that the conventional signal transmitter 100 has a signal testing function of 4 frequency bands, where each frequency band has two signals, namely, positive and negative signals, so that 8 interfaces of the transmitting and testing board 200 are connected to the signal transmitter 100 through the high-speed radio frequency line, and the oscilloscope 400 can complete the eye pattern test only by positive signals in the 4 frequency bands, so that the receiving and testing board 500 has only 4 positive interfaces connected to the oscilloscope 400.
Specifically, referring to fig. 3, the HDMI AOC cable testing apparatus further includes an error detector 600; the transmitting end of the error code instrument 600 is connected with the transmitting test board 200, the transmitting test board 200 is connected with the receiving test board 500 through the HDMI AOC cable 300 to be tested, and the receiving test board 500 is connected with the receiving end of the error code instrument 600;
the error code detector 600 is configured to send an error code test signal to the emission test board 200;
the emission test board 200 is further configured to receive the error code test signal, convert the error code test signal into an error code HDMI signal, and send the error code HDMI signal to the HDMI AOC cable 300 to be tested;
the HDMI AOC cable 300 to be tested is further configured to convert the error code HDMI signal into an optical signal for transmission, and restore the optical signal into an error code HDMI signal after transmission is completed and send the error code HDMI signal to the receiving test board 500 after transmission is completed;
the receiving test board 500 is further configured to receive the error code HDMI signal after the transmission is completed, restore the error code HDMI signal into an error code test signal after the transmission is completed, and send the error code test signal to the error code meter 600;
the error code meter 600 is further configured to receive the transmitted error code test signal sent by the receiving test board 500, perform an error code test according to the error code test signal and the transmitted error code test signal, and display an error code rate.
It should be noted that, because the error code tester 600 only needs to test the complete signal with the error code, 8 interfaces of the transmitting test board 200 and the receiving test board 500 are both connected to the error code tester 600 through the high-speed radio frequency lines, and the error code tester 600 obtains the error rate in the signal transmission process by comparing the transmitted signal with the received signal.
Specifically, referring to fig. 4, the HDMI AOC cable test apparatus further includes an HDMI output device 700 and a playback device 800; the HDMI output device 700 is connected to the playback device 800 through the HDMI AOC cable 300 to be tested;
the HDMI output device 700 is configured to decode the test video and output a corresponding HDMI audio/video signal;
the HDMI AOC cable 300 to be tested is further configured to convert the HDMI audio/video signal into an optical signal for transmission, and restore the optical signal into a HDMI audio/video signal after transmission is completed, and send the HDMI audio/video signal to the playing device 800;
the playing device 800 is configured to play the HDMI audio/video signal after decoding the HDMI audio/video signal, so as to complete a real machine playing test.
It should be emphasized that, since the HDMI AOC cable includes the photoelectric conversion device, a certain amount of power is consumed and a certain amount of heat is released during use, and the HDMI AOC cable is subjected to aging test by playing the test video for a long time in a severe environment.
The technical scheme is further improved by adding the electric eye pattern test, the error code test and the real machine playing test, the electric eye pattern test and the error code test are carried out on the overall signal transmission of the HDMI AOC cable, the high transmission quality of the HDMI AOC cable in a production environment is ensured, and the long-time availability of the HDMI AOC cable in an extreme environment is tested through the real machine playing test; the technical effects of perfecting the test items and improving the delivery quality of the HDMI AOC cable are achieved.
The invention also provides an HDMI AOC cable testing method, which comprises the following steps:
the signal transmitter 100 transmits an eye pattern test signal;
it is easy to understand that the signal quality of the eye pattern test signal transmitted by the signal transmitter 100 is higher than that of the item to be tested, which includes 4 frequency bands to be tested, each frequency band has positive and negative signals, and the signal quality is extremely high.
The emission test board 200 receives the eye pattern test signal, converts the eye pattern test signal into an eye pattern HDMI signal and sends the eye pattern HDMI signal to the HDMI AOC cable 300 to be tested;
it should be noted that, the transmission and conversion of the signal in the transmitting and testing board 200, the signal loss condition and the noise condition are negligible compared to the transmission loss and noise condition of the HDMI AOC cable.
The HDMI AOC cable 300 to be tested converts the eye pattern HDMI signal into an optical signal and transmits the optical signal to an optical port of the oscilloscope 400 through the optical fiber array;
it is worth emphasizing that the test mainly tests the transmission loss condition of the optical signal in the optical fiber of the HDMI AOC cable, and can also test the loss condition of the HDMI AOC cable when the electrical signal is converted into the optical signal.
The oscilloscope 400 performs an eye diagram test on the signal received by the optical port thereof, and displays the test result.
Specifically, after the step of receiving the eye pattern test signal by the launch test board 200, converting the eye pattern test signal into an eye pattern HDMI signal and sending the eye pattern HDMI signal to the HDMI AOC cable 300 to be tested, the HDMI AOC cable test method further includes:
the HDMI AOC cable 300 to be tested converts the eye pattern HDMI signal into an optical signal for transmission, and restores the optical signal into an eye pattern HDMI signal after transmission and sends the eye pattern HDMI signal to the receiving test board 500 after transmission;
the receiving test board 500 restores the transmitted eye pattern HDMI signal to a transmitted eye pattern test signal and sends the eye pattern test signal to the oscilloscope 400;
the oscilloscope 400 performs an eye pattern test on the received eye pattern test signal after the transmission is completed, and displays a test result.
It should be noted that, in the present embodiment, by adding the receiving test board 500, the conventional eye pattern test on the HDMI AOC cable is implemented, the photoelectric conversion module of the HDMI AOC cable is further tested, the loss and noise in the conversion process are obtained, and meanwhile, the transmission loss of the optical signal in the HDMI AOC cable is also tested to a certain extent.
Specifically, the HDMI AOC cable testing method further includes the steps of:
the error code meter 600 sends an error code test signal to the emission test board 200;
the emission test board 200 receives the error code test signal, converts the error code test signal into an error code HDMI signal and sends the error code HDMI signal to the HDMI AOC cable 300 to be tested;
the HDMI AOC cable 300 to be tested converts the error code HDMI signal into an optical signal for transmission, and after the transmission is completed, restores the optical signal into the error code HDMI signal after the transmission is completed and sends the error code HDMI signal to the receiving test board 500;
the receiving test board 500 receives the error code HDMI signal after the transmission is completed, restores the error code HDMI signal into an error code test signal after the transmission is completed, and sends the error code test signal to the error code meter 600;
the error code meter 600 receives the transmitted error code test signal sent by the receiving test board 500, performs error code test according to the error code test signal and the transmitted error code test signal, and displays the error code rate.
It is easy to understand that the error code testing method is basically the same as the existing error code testing method, however, because the customized transmitting testing board 200 and receiving testing board 500 exist in the present application, the testing steps are greatly simplified, and the testing efficiency is improved.
Specifically, the HDMI AOC cable testing method further includes the steps of:
the HDMI output device 700 decodes the test video and outputs a corresponding HDMI audio/video signal;
the to-be-tested HDMI AOC cable 300 converts the HDMI audio/video signal into an optical signal for transmission, and restores the optical signal into a transmitted HDMI audio/video signal after the transmission is completed, and sends the HDMI audio/video signal to the playing device 800;
the playing device 800 decodes the HDMI audio/video signal and plays the decoded signal to complete the real machine playing test.
It should be noted that, the live test of this application tests the service life of the HDMI AOC cable through a long-time live test in an extreme environment, where the extreme environment includes an environment temperature higher than 40 degrees and a relative humidity exceeding 60% -90% RH.
The embodiment further improves the technical scheme by disclosing the testing method of the optical eye diagram test and the electric eye diagram test, greatly simplifies the testing steps by disclosing the error code testing method through the customized transmitting test board 200 and the customized receiving test board 500, improves the testing efficiency, improves the delivery quality of the HDMI AOC cable by using the testing method of the real machine playing test, and further improves the testing items and the testing flow.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The HDMI AOC cable testing device is characterized by comprising a signal emitter, a transmitting test board, an HDMI AOC cable to be tested and an oscilloscope, wherein the signal emitter is connected with the transmitting test board; the signal emitter is connected with the emission test board, the emission test board is connected with the HDMI AOC cable to be tested, and the HDMI AOC cable to be tested is connected with an optical port of the oscilloscope through an optical fiber array; wherein,
the signal transmitter is used for transmitting an eye pattern test signal;
the emission test board is used for receiving the eye pattern test signal, converting the eye pattern test signal into an eye pattern HDMI signal and then sending the eye pattern HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested is used for converting the eye pattern HDMI signal into an optical signal and sending the optical signal to an optical port of the oscilloscope through the optical fiber array;
and the oscilloscope is used for carrying out eye pattern test on the signals received by the optical port of the oscilloscope and displaying the test result.
2. The HDMI AOC cable test device of claim 1, further comprising, a receive test board; the HDMI AOC cable to be tested is connected with the receiving test board, and the receiving test board is connected with the oscilloscope; wherein,
the HDMI AOC cable to be tested is also used for converting the eye pattern HDMI signal into an optical signal for transmission, and after the transmission is finished, the optical signal is restored into the eye pattern HDMI signal after the transmission is finished and is sent to the receiving test board;
the receiving test board is used for restoring the transmitted eye pattern HDMI signal into a transmitted eye pattern test signal and sending the eye pattern test signal to the oscilloscope;
the oscilloscope is further used for carrying out eye pattern test on the received eye pattern test signal after transmission is finished and displaying a test result.
3. The HDMI AOC cable test device of claim 2, wherein said HDMI AOC cable test device further comprises an error detector; the transmitting end of the error code instrument is connected with the transmitting test board, the transmitting test board is connected with the receiving test board through the HDMI AOC cable to be tested, and the receiving test board is connected with the receiving end of the error code instrument; wherein,
the error code instrument is used for sending an error code test signal to the emission test board;
the emission test board is also used for receiving the error code test signal, converting the error code test signal into an error code HDMI signal and sending the error code HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested is also used for converting the error code HDMI signal into an optical signal for transmission, and reducing the optical signal into an error code HDMI signal after the transmission is finished and sending the error code HDMI signal to the receiving test board after the transmission is finished;
the receiving test board is also used for receiving the error code HDMI signals after the transmission is finished, reducing the error code HDMI signals into error code test signals after the transmission is finished, and sending the error code test signals to the error code device;
the error code instrument is also used for receiving the error code test signal which is sent by the receiving test board and is transmitted after the transmission is finished, carrying out error code test according to the error code test signal and the error code test signal which is transmitted after the transmission is finished, and displaying the error code rate.
4. The HDMI AOC cable test apparatus of claim 3, further comprising an HDMI output device and a playback device; the HDMI output equipment is connected with the playing equipment through the HDMI AOC cable to be tested; wherein
The HDMI output equipment is used for decoding the test video and outputting a corresponding HDMI audio/video signal;
the HDMI AOC cable to be tested is also used for converting the HDMI audio and video signals into optical signals for transmission, and restoring the optical signals into the HDMI audio and video signals after transmission and sending the HDMI audio and video signals to the playing equipment after transmission is finished;
and the playing equipment is used for playing the decoded HDMI audio/video signals so as to complete the real machine playing test.
5. An HDMI AOC cable test method is characterized by comprising the following steps:
the signal emitter emits an eye pattern test signal;
the transmitting test board receives the eye pattern test signal, converts the eye pattern test signal into an eye pattern HDMI signal and then sends the eye pattern HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested converts the eye pattern HDMI signal into an optical signal and sends the optical signal to an optical port of an oscilloscope through the optical fiber array;
and the oscilloscope performs eye pattern test on the signals received by the optical port of the oscilloscope, and displays the test result.
6. The HDMI AOC cable test method of claim 5, wherein after the step of said launch test board receiving said eye pattern test signal, converting it to an eye pattern HDMI signal and sending it to the HDMIAOC cable under test, said HDMI AOC cable test method further comprises:
the HDMI AOC cable to be tested converts the eye pattern HDMI signal into an optical signal for transmission, restores the optical signal into the eye pattern HDMI signal after the transmission is finished, and sends the eye pattern HDMI signal to the receiving test board;
the receiving test board restores the transmitted eye pattern HDMI signal into a transmitted eye pattern test signal and sends the eye pattern test signal to the oscilloscope;
and the oscilloscope performs eye pattern test on the received eye pattern test signal after the transmission is finished, and displays a test result.
7. The HDMI AOC cable test method of claim 6, wherein said HDMIAOC cable test method further comprises the steps of:
the error code instrument sends an error code test signal to the emission test board;
the emission test board receives the error code test signal, converts the error code test signal into an error code HDMI signal and sends the error code HDMI signal to the HDMI AOC cable to be tested;
the HDMI AOC cable to be tested converts the error code HDMI signal into an optical signal for transmission, restores the optical signal into the error code HDMI signal after transmission is finished, and sends the error code HDMI signal to the receiving test board;
the receiving test board receives the error code HDMI signals after the transmission is finished, restores the error code HDMI signals into error code test signals after the transmission is finished, and sends the error code HDMI signals to the error code device;
and the error code instrument receives the transmitted error code test signal sent by the receiving test board, performs error code test according to the error code test signal and the transmitted error code test signal, and displays the error code.
8. The HDMI AOC cable testing method of claim 7, wherein said HDMIAOC cable testing method further comprises the steps of:
the HDMI output equipment decodes the test video and outputs a corresponding HDMI audio/video signal;
the HDMI AOC cable to be tested converts the HDMI audio/video signals into optical signals for transmission, restores the optical signals into the HDMI audio/video signals after transmission is finished, and sends the HDMI audio/video signals to the playing equipment;
and the playing equipment decodes the HDMI audio/video signal and then plays the signal so as to complete the real machine playing test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011011022.XA CN112203081A (en) | 2020-09-23 | 2020-09-23 | Photoelectric signal device and method |
Applications Claiming Priority (1)
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