CN107197246A - A kind of method of testing and system of set top box reliability - Google Patents
A kind of method of testing and system of set top box reliability Download PDFInfo
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- CN107197246A CN107197246A CN201710546785.6A CN201710546785A CN107197246A CN 107197246 A CN107197246 A CN 107197246A CN 201710546785 A CN201710546785 A CN 201710546785A CN 107197246 A CN107197246 A CN 107197246A
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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
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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Abstract
This application discloses a kind of method of testing and system of set top box reliability, it is related to technical field of measurement and test, is invented the problem of low for the test accuracy of solution set top box reliability to be tested.The system of the application includes：The set top box to be tested inside programmable constant temperature humidity chamber is positioned over, programmable constant temperature humidity chamber is used for the environment that constant temperature and humidity is provided for set top box to be tested；Video-frequency monitor, controller, slave computer and the digital television signal source being connected respectively with set top box to be tested, video-frequency monitor is used to monitor whether the audio-video signal of set top box output to be tested is normal, controller is used for the feedback result for receiving set top box to be tested, and slave computer is used for the control signal for launching set top box to be tested；Controller is connected with programmable constant temperature humidity chamber, and controller is additionally operable to control the temperature value and humidity value of programmable constant temperature humidity chamber；Controller is connected with slave computer.During the application is mainly used in test set top box.
Description
Technical field
The application is related to technical field of measurement and test, more particularly to a kind of method of testing and system of set top box reliability.
Background technology
With the development of DTV, the demand of operator and terminal user are also more and more diversified.In order to meet user
Demand, digital television decoder is that the model of set top box is also more and more.In order to ensure the quality of set top box, before dispatching from the factory
Need comprehensively to be tested.Because some potential problems of set top box are not easy to occur in conventional sense, only in pole
It could increase the probability gone wrong in the case of limit operation.The presence of these potential problems have impact on the reliability of set top box.
In the prior art, using the pre-set program in set top box and automatic zapping function can be set in set top box,
Picture magic lantern playing function is set in set top box, set top box is put into baking box, oven temperature is more than 50 DEG C, is connected on the set-top box
Video frequency output recorder and serial monitoring instrument are connect, start runs and tested, the record test job of video frequency output recorder
Middle video output quality and phenomenon, the work process of serial monitoring tool records set top box output and Trouble Report；Test 72 small
When, the test crash if there is exception in test process is tested if no appearance in test process is abnormal and passed through.
, it is necessary to carry out a variety of environment to set top box reliability for the test jobs such as set top box research and development, technical support
Pressure test, however it is single by the way that set top box is placed in into test environment in more than 50 DEG C of hot environment, to set top box reliability
Test accuracy it is not high.
The content of the invention
This application provides a kind of method of testing and system of set top box reliability, to solve set top box reliability to be tested
Test accuracy it is low the problem of.
In a first aspect, this application provides a kind of test system of set top box reliability, the system includes：Being positioned over can journey
Set top box to be tested inside formula constant temperature humidity chamber, the programmable constant temperature humidity chamber is used to be the test-run a machine to be measured
Top box provides the environment of constant temperature and humidity；The video-frequency monitor that is connected respectively with the set top box to be tested, controller, slave computer,
And digital television signal source, the video-frequency monitor be used to monitoring the set top box to be tested output audio-video signal whether
Normally, the controller is used for the feedback result for receiving the set top box to be tested, and the slave computer is used to launch described to be measured
The control signal of test-run a machine top box；The controller is connected with the programmable constant temperature humidity chamber, and the controller is additionally operable to
Control the temperature value and humidity value of the programmable constant temperature humidity chamber；The controller is connected with the slave computer, described
Controller is additionally operable to control the control signal of slave computer transmitting.Using this implementation, programmable constant temperature humidity chamber
True environment can be simulated with the temperature and humidity inside Control experiment case, to improve the accuracy of reliability test result.
Video-frequency monitor can monitor the decoded signal of set top box to be tested, can detect whether set top box to be tested can be correctly decoded
The signal of audio-video signal source offer is provided.
With reference in a first aspect, in first aspect in the first possible implementation, the controller by USB line or
RS232, is connected with the set top box to be tested, the programmable constant temperature humidity chamber, the slave computer.Using this realization side
Formula, controller is connected with set top box to be tested, programmable constant temperature humidity chamber, slave computer, can pass through USB line and RS232
Any one in two ways, it is convenient to be provided for selection test data line.
With reference in a first aspect, in second of mode in the cards of first aspect, the slave computer includes：With USB
Turn the single-chip microcomputer of serial port circuit connection；The Infrared Remote-Control Sending device being connected with the single-chip microcomputer；It is connected with the single-chip microcomputer
Power on-off control device.Using implementation, slave computer can simulate the IR remote controller of set top box to be tested, and can
By the connection of slave computer and controller, the control signal of slave computer is controlled by controller.
With reference in a first aspect, in the third mode in the cards of first aspect, the system also includes hub；
All set top boxes to be tested are connected by hub, if the quantity at least two of the set top box to be tested.Using
This implementation, the test job of multiple set top boxes can be completed in once testing, the testing efficiency of set top box is improved.It is logical
The connection of all set top boxes to be tested can be realized by crossing hub, can realize that multiple set top boxes are tested simultaneously.
Second aspect, present invention also provides a kind of method of testing of set top box reliability, this method is applied to include treating
Test the machine of set top box, programmable constant temperature humidity chamber, video-frequency monitor, controller, slave computer and digital television signal source
Top box reliability test system, methods described includes：The controller obtains the property parameters of the set top box to be tested；According to
The property parameters, the controller selects test case, and the test case includes treating the power on/off of detection set top box, red
The control parameter of the variables such as outer remote control, environment temperature, ambient humidity；The controller performs the test case；According to preset
Polling method, the controller receives the audio-video signal monitoring result of the set top box output to be tested；According to the audio frequency and video
Signal detecting result, the controller judges whether the set top box to be tested is reliable.Using this implementation, control can be passed through
Device processed controls the state and test environment of set top box to be tested, realizes and treats automatically controlling for test set top box.
With reference to second aspect, in the first mode in the cards of second aspect, survey is performed described in the controller
Example on probation, including：Operational order is sent to the slave computer, the operational order includes opening the set top box to be tested
Machine, shutdown, zapping etc. are operated；The temperature value and humidity value of the programmable constant temperature humidity chamber are set.
It is described to be sent to the slave computer in second of mode in the cards of second aspect with reference to second aspect
Operational order, including：According to prepositioned instruction transmission order, the operational order is generated；Send the operational order.
It is described to set the programmable permanent in the third mode in the cards of second aspect with reference to second aspect
The temperature value and humidity value of steady temperature damp test case, including：Rule is updated according to preset, updates and the programmable constant temperature and humidity is set
The temperature value and humidity value of chamber.
It is described according to the output signal in the 4th kind of mode in the cards of second aspect with reference to second aspect,
The controller judges whether the set top box to be tested is reliable, including：If the output signal is abnormal signal, described
Set top box to be tested is unreliable；If the output signal is not the abnormal signal, the set top box to be tested is reliable.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation of the test system for set top box reliability that Fig. 1 provides for the application；
A kind of structural representation for slave computer that Fig. 2 provides for the application；
A kind of method of testing flow chart for set top box reliability that Fig. 3 the application is provided；
A kind of method flow diagram for controller implementation of test cases that Fig. 4 provides for the application；
A kind of method flow diagram that operational order is sent to slave computer that Fig. 5 provides for the application；
Fig. 6 judges the whether reliable method flow diagram of set top box to be tested for one kind that the application is provided.
Brief description of the drawings：11- set top boxes to be tested, 12- programmable constant temperature humidity chambers, 13- video-frequency monitors, 14- controls
Device processed, 15- slave computers, 16- digital television signal sources, 21-USB turns serial port circuit, 22- single-chip microcomputers, 23- Infrared Remote-Control Sendings dress
Put.
Embodiment
Referring to Fig. 1, a kind of structural representation of the test system of the set top box reliability provided for the application.Referring to Fig. 2,
A kind of structural representation of the slave computer provided for the application.As shown in figure 1, the system includes：
It is positioned over the set top box to be tested 11 inside programmable constant temperature humidity chamber 12, the programmable constant temperature and humidity examination
Tryoff 12 is used for the environment that constant temperature and humidity is provided for the set top box 11 to be tested；
Video-frequency monitor 13, controller 14, slave computer 15 and the numeral being connected respectively with the set top box 11 to be tested
TV signal source 16, whether just the video-frequency monitor 13 for monitoring the audio-video signal of the output of set top box to be tested 11
Often, the controller 14 is used for the feedback result for receiving the set top box to be tested 11, and the slave computer 15 is used to launch described
The control signal of set top box 11 to be tested；
The controller 14 is connected with the programmable constant temperature humidity chamber 12, and the controller 14 is additionally operable to control institute
State the temperature value and humidity value of programmable constant temperature humidity chamber 12；
The controller 14 is connected with the slave computer 15, and the controller 14 is additionally operable to the institute for controlling slave computer 15 to launch
State control signal.
Set top box 11 to be tested is the set top box do not tested also, and the test can be the quality testing of set top box of not dispatching from the factory,
It can also be the performance detection to unformed set top box.Programmable constant temperature humidity chamber 12, being can be by programming Control
The electric cabinet of chamber temperature and humidity.Video-frequency monitor 13 can monitor the video and audio signal of set top box output.Control
Device 14 is the overall control of the system to whole set top box reliability testing.Slave computer 15 modulates infrared remote-controlled signal and will be infrared
Remote signal is sent to set top box to be tested, and slave computer 15 can also control the power on/off of set top box 11 to be tested.DTV is believed
Number source 16 is that set top box 11 to be tested provides TV signal.
It can be seen that programmable constant temperature humidity chamber 12 controls its temperature by controller 14 by above-mentioned annexation
And humidity.The transmission of infrared remote-controlled signal of the control slave computer 15 of controller 14 and to be tested by the indirect control of slave computer 15
The on/off of set top box 11.Controller 14 receives the output signal of set top box 11 to be tested, and controller 14 can also be directly to
Set top box 11 to be tested sends instruction, and set top box 11 to be tested is received after instruction, and set top box 11 to be tested is sent according to instruction
Output signal.
Thus controller 14 controls the environment temperature of set top box 11 to be tested by programmable constant temperature humidity chamber 12, control
Device 14 processed passes through receive situation that derived digital signal 16 receive TV signal of the slave computer 15 by set top box 11 to be tested, control
Device 14 receives what is sent by set top box 11 to be tested, the output signal fed back by video-frequency monitor 13.
Using this implementation, programmable constant temperature humidity chamber 12 can with the temperature and humidity inside Control experiment case,
True environment can be simulated, to improve the accuracy of reliability test result.Video-frequency monitor 13 can monitor test-run a machine top to be measured
The decoded signal of box 11, can detect whether set top box 11 to be tested can decode that out the signal that derived digital signal 16 is provided.
Preferably, the controller 14 is permanent with the set top box 11 to be tested, the programmable by USB line or RS232
Steady temperature damp test case 12, the slave computer 15 are connected.
USB is external bus standard interface, and RS232 is the general-purpose interface on personal computer, is most common serial logical
Believe interface.Two kinds of different communication interfaces are set on the controller, the demand of plurality of devices can be substantially met, it is easy to accomplish be
The extension of system, the also connection for all parts in system provides convenient.
Preferably, as shown in Fig. 2 the slave computer 15 includes：
Turn the single-chip microcomputer 22 that serial port circuit 21 is connected with USB；
The Infrared Remote-Control Sending device 23 being connected with the single-chip microcomputer 22；
The power on-off control device 24 being connected with the single-chip microcomputer 22.
Slave computer 15 is equivalent to the IR remote controller that can be controlled, and in order to realize its function, slave computer 15 includes USB
Turn serial port circuit 21, single-chip microcomputer 22, Infrared Remote-Control Sending device 23 and power on-off control device 24.USB turns serial port circuit 21,
Usb signal can be realized to the conversion of rs 232 serial interface signal.Due to generally thering is Serial Port Transmission side signal directly can be received by single-chip microcomputer
And utilization, and usb signal cannot, turn the circuit of serial ports so needing to set, transmitted with realizing to connect by USB to slave computer
Signal.Single-chip microcomputer 22, can be realized to the overall control of slave computer 15, the control instruction that controller 14 is transmitted be performed, to cause
Joint debugging of the controller 14 to slave computer 15, programmable constant temperature humidity chamber 12 and set top box to be tested 11.Infrared Remote-Control Sending
Device 23, which is that slave computer 15 is indispensable, part, is premise and the basis for realizing infrared emission signal.On/off is controlled
Device 24, is the power switch controlled by slave computer 15, available for the on/off for controlling set top box 11 to be tested.
Preferably, the USB that the slave computer 15 includes, which turns serial port circuit 21, to be used to realize controller 14 and single-chip microcomputer 22
Communicate to connect, but USB turns serial port circuit and is not and needs, if single-chip microcomputer 22 possesses usb communication function, monolithic in embodiment
Machine 22 directly can be connected by USB with controller 14, and serial port circuit 21 is turned without USB.
Preferably, the system also includes hub；All set top boxes 11 to be tested are connected by hub, such as
The quantity at least two of really described set top box 11 to be tested.
When testing set top box to be tested, each set top box is required for that by the cycle regular hour test could be completed,
If only testing a set top box every time, testing efficiency is relatively low.Many can be tested simultaneously in the system that the application is provided
Set top box.If the quantity of set top box to be tested is at least 2, all set top boxes are all connected by hub, to realize
Tested while many set top boxes.
Referring to Fig. 3, the method for testing flow chart of a kind of set top box reliability provided for the application, applied to including to be measured
Test-run a machine top box programmable constant temperature humidity chamber, video-frequency monitor, controller, the set top box of slave computer and digital television signal source
The test system of reliability., it is necessary to according to the test of set top box reliability before the method for testing of set top box reliability is performed
Connected mode, connection various pieces in system.As shown in figure 3, this method comprises the following steps：
Step 301, controller obtains the property parameters of set top box to be tested.
Set top box to be tested is the set top box for needing to test, and its quantity can be one or more.Property parameters, including this
The corresponding environment temperature of set top box, ambient humidity etc..The category of polytype set top box to be tested can be set in controller
Property parameter, according to the model of set top box to be tested, chosen and set top box to be tested in the property parameters stored from controller itself
Corresponding property parameters.The source of property parameters is not limited in the embodiment of the present application.Wherein controller can be calculating
Machine.
Step 302, according to property parameters, controller selection test case.
Test case includes treating the variables such as power on/off, infrared remote control, environment temperature, the ambient humidity of detection set top box
Control parameter.Test case is actually the configuration processor of controller, and program is related to controller and its is connected with controller
All controls, including the power on/off of set top box to be tested is controlled by slave computer, environment is controlled by programmable constant temperature humidity chamber
Temperature and ambient humidity.
Step 303, controller implementation of test cases.
Controller implementation of test cases, that is, controller send control instruction, by slave computer and programmable constant temperature and humidity
Chamber is performed, and set top box to be tested performs corresponding operation according to the instruction of slave computer, and set top box to be tested is according to programmable
The environment temperature and ambient humidity that constant temperature humidity chamber is provided change local environment state.
Step 304, according to preset polling method, controller receives the audio-video signal monitoring knot of set top box output to be tested
Really.
The digital television signal of the output of video-frequency monitor monitoring set top box, and the sound periodically arrived to set top box feedback reception
The situation of vision signal.Set top box to be tested receives the feedback result of video-frequency monitor and exports feedback result to controller.
It is the algorithm set that preset polling method, which is able to distinguish multiple set top boxes,.By setting coding information for multiple set top boxes,
Controller receive feedback result be, according to number information judge feedback result it is corresponding be that set top box, it is many to realize
Controlled while platform set top box.If the quantity of certain set top box to be tested is one, the setting of polling method is nor affected on to be measured
The audio-video signal monitoring result of test-run a machine top box.
Step 305, according to audio-video signal monitoring result, controller judges whether set top box to be tested is reliable.
Audio-video signal monitoring result, is the feedback result for treating test set top box of video-frequency monitor, can be according to defeated
Go out signal and judge whether set top box to be tested is reliable.After controller judges whether set top box to be measured is reliable, methods described is also
Including the test result of set top box to be tested is generated into test report.
Using this implementation, the application can control the state and test environment of set top box to be tested by controller,
Realize the reliability testing for treating test set top box.Then the test performs test by setting test case in the controller
Use-case so realize treat test set top box automatic test.
Referring to Fig. 4, a kind of method flow diagram of the controller implementation of test cases provided for the application, is shown in Fig. 3
Proposed on the basis of method.As shown in figure 4, controller implementation of test cases includes：
Step 401, operational order is sent to slave computer.
Slave computer, that is, test-run a machine to be measured can be controlled by the IR remote controller of programming Control, the IR remote controller
Top box.Operational order includes treating the operations such as start, shutdown, the zapping of test set top box.Certain operational order can also include
Other functions of set top box to be tested, can be the general utility functions of set top box or the specific function of set top box to be tested.
Step 402, the temperature value and humidity value of programmable constant temperature humidity chamber are set.
The temperature value and humidity value of setting programmable constant temperature humidity chamber, including the numerical value of temperature value and humidity value are big
It is small, and the duration, variation tendency etc..Rule is updated according to preset, updates and programmable constant temperature humidity chamber is set
Temperature value and humidity value.Equivalent to the preset rule that updates equivalent to the change curve for setting temperature value and humidity value, according to change
The specific execution method of the situation of change of curve, design programming thinking, and program.The specific programmed method of program is included but not
It is only limitted to the high-level programming languages such as LabVIEW, C, C++, C#, JAVA.
Using above-mentioned implementation, the controller of the application can control slave computer and programmable constant temperature and moisture test simultaneously
Case, and by test case, realize the different test modes needed to different type, difference test, provided for tester
Greatly facilitate.
Referring to Fig. 5, a kind of method flow diagram that operational order is sent to slave computer provided for the application, is in Fig. 4 institutes
Show what is proposed on the basis of method.As shown in figure 5, operational order is sent to slave computer, including：
Step 501, according to prepositioned instruction transmission order, operational order is generated.
Prepositioned instruction transmission order refers to, treats the control process of test set top box.Send suitable according to prepositioned instruction, obtain
Corresponding prepositioned instruction, and generate the operational order that slave computer can be recognized.Needed in test process to set top box to be measured
The operation such as switching on and shutting down, zapping carries out the test of multioperation mode, so in controller prepositioned instruction transmission order so as to be tested
The operational order that set top box is sent according to slave computer, performs corresponding operation.
Step 502, operational order is sent.
Operational order is sent to slave computer, corresponding operation is performed by slave computer.
Operational order is transmitted by slave computer, rather than has controller to transmit operational order by way of wire transmission,
Main purpose is the indirect control realized and treat test set top box, while can also test the infrared receiving device of set top box to be measured
It is whether reliable, it is also a part for set top box reliability testing, is the premise and guarantee tested comprehensively set top box.
Referring to Fig. 6, the whether reliable method flow diagram of set top box to be tested is judged for one kind that the application is provided, is in figure
Proposed on the basis of method shown in 4.As shown in fig. 6, according to output signal, controller judges that set top box to be tested whether may be used
Lean on, including：
Step 601, if output signal is abnormal signal, set top box to be tested is unreliable.
Step 602, if output signal is not abnormal signal, set top box to be tested is reliable.
Output signal, is the feedback result for treating test set top box of video-frequency monitor, can be judged according to output signal
Whether set top box to be tested is reliable.Whether set top box to be tested reliable, refer to set top box to be tested in extreme environment temperature and
During ambient humidity, infrared control signal can be received, and make corresponding response.It is abnormal signal for output signal
Judge, including two aspects, one is that can set top box to be tested to digital television signal efficient decoding, but set top box to be tested
Whether operational order that slave computer send is responded.There is exception in whichever aspect, and its output signal is all abnormal signal, can
Judge that set top box to be tested is unreliable.
In the specific implementation, the present invention also provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can be stored
There is program, the program may include the part or all of step in each embodiment for the method for calling that the present invention is provided when performing.Institute
The storage medium stated can be magnetic disc, CD, read-only memory (English：Read-onlymemory, referred to as：ROM it is) or random
Storage memory (English：Randomaccessmemory, referred to as：RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Understood based on such, the technical scheme in the embodiment of the present invention substantially or
Say that the part contributed to prior art can be embodied in the form of software product, the computer software product can be deposited
Storage is in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to cause a computer equipment (can be with
It is personal computer, server, or network equipment etc.) perform some part institutes of each of the invention embodiment or embodiment
The method stated.
Between the embodiment of each in this specification identical similar part mutually referring to.Invention described above is real
The mode of applying is not intended to limit the scope of the present invention..
Claims (9)
1. a kind of test system of set top box reliability, it is characterised in that the system includes：
It is positioned over the internal set top box to be tested (11) of programmable constant temperature humidity chamber (12), the programmable constant temperature and humidity examination
Tryoff (12) is used for the environment that constant temperature and humidity is provided for the set top box (11) to be tested；
The video-frequency monitor (13) that is connected respectively with the set top box (11) to be tested, controller (14), slave computer (15) and
Digital television signal source (16), the video-frequency monitor (13) is used for the audio frequency and video for monitoring set top box to be tested (11) output
Whether signal is normal, and the controller (14) is used for the feedback result for receiving the set top box to be tested (11), the slave computer
(15) it is used for the control signal for launching the set top box to be tested (11)；
The controller (14) is connected with the programmable constant temperature humidity chamber (12), and the controller (14) is additionally operable to control
The temperature value and humidity value of the programmable constant temperature humidity chamber (12)；
The controller (14) is connected with the slave computer (15), and the controller (14) is additionally operable to control slave computer (15) transmitting
The control signal.
2. the system as claimed in claim 1, it is characterised in that the controller (14) is and described by USB line or RS232
Set top box (11) to be tested, the programmable constant temperature humidity chamber (12), the slave computer (15) connection.
3. the system as claimed in claim 1, it is characterised in that the slave computer (15) includes：
Turn the single-chip microcomputer (22) that serial port circuit (21) is connected with USB；
The Infrared Remote-Control Sending device (23) being connected with the single-chip microcomputer (22)；
The power on-off control device (24) being connected with the single-chip microcomputer (22).
4. the system as claimed in claim 1, it is characterised in that the system also includes hub；
All set top boxes (11) to be tested are connected by hub, if the quantity of the set top box to be tested (11) is at least
For two.
5. a kind of method of testing of set top box reliability, it is characterised in that applied to including set top box to be tested, programmable constant temperature
Constant moisture test case, video-frequency monitor, controller, the test system of the set top box reliability of slave computer and digital television signal source,
Methods described includes：
The controller obtains the property parameters of the set top box to be tested；
According to the property parameters, the controller selects test case, and the test case includes treating detection set top box
The control parameter of the variables such as power on/off, infrared remote control, environment temperature, ambient humidity；
The controller performs the test case；
According to preset polling method, the controller receives the audio-video signal monitoring result of the set top box output to be tested；
According to the audio-video signal monitoring result, the controller judges whether the set top box to be tested is reliable.
6. method as claimed in claim 5, it is characterised in that implementation of test cases described in the controller, including：
Operational order is sent to the slave computer, and the operational order includes to the start of the set top box to be tested, shuts down, changes
Platform etc. is operated；
The temperature value and humidity value of the programmable constant temperature humidity chamber are set.
7. method as claimed in claim 6, it is characterised in that described to send operational order to the slave computer, including：
According to prepositioned instruction transmission order, the operational order is generated；
Send the operational order.
8. method as claimed in claim 6, it is characterised in that the temperature of the setting programmable constant temperature humidity chamber
Value and humidity value, including：
Rule is updated according to preset, the temperature value and humidity value that the programmable constant temperature humidity chamber is set is updated.
9. method as claimed in claim 5, it is characterised in that described according to the output signal, the controller judges institute
Whether reliable state set top box to be tested, including：
If the output signal is abnormal signal, the set top box to be tested is unreliable；
If the output signal is not the abnormal signal, the set top box to be tested is reliable.
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| CN108289218A (en) * | 2017-12-28 | 2018-07-17 | 深圳市九洲电器有限公司 | A kind of audio and video test method and system and audio and video test equipment |
| CN110266405A (en) * | 2019-05-10 | 2019-09-20 | 珠海格力电器股份有限公司 | Equipment communication signal deviation detecting system |
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Application publication date: 20170922 |