A tool for testing a sine wave output signal of a set top box

Abstract

The utility model discloses a kind of tool for testing set top box sine wave output signal, comprising: PCB board, quick plug connector, waveform adjustment button, debugging interface, display screen, setting button and direct current voltage, the periphery of PCB board is equipped with fixed hole, fixed hole is used to connect support piece, display screen is fixed in the center of PCB board, debugging interface is fixed in the side of display screen and close to the edge of PCB board, waveform adjustment button and setting button are respectively fixed in the two sides of display screen, quick plug connector and direct current voltage are respectively fixed in the two ends of PCB board, quick plug connector is connected with the S2 output interface of set top box.This application is integrated into a tool by integrating PCB board, quick plug connector, waveform adjustment button, debugging interface, display screen, setting button and power module, when testing, directly insert the tool mentioned in this application into the connector of set top box S2, open 22KHz signal using remote controller, and the tool will directly test whether signal meets requirements.

Description

Technical Field

[0001] This utility model belongs to the field of electronic testing equipment technology, and specifically relates to a tooling for testing the sine wave output signal of a set-top box. Background Technology

[0002] In the manufacturing process of modern set-top boxes, the 22kHz output test of the S2 signal is a crucial step in ensuring the normal operation of the equipment. With the increasing prevalence of digital television receivers and the expansion of production scale, the requirements for testing efficiency and accuracy are constantly rising. However, traditional testing methods have many problems, seriously affecting production efficiency and product quality.

[0003] Currently, the industry commonly uses professional testing equipment such as oscilloscopes to test 22kHz signals. The specific operating procedure is as follows: the operator connects the oscilloscope probe to the S2 output interface of the set-top box, then starts the 22kHz signal using a remote control, and finally observes the waveform on the oscilloscope for judgment. While this method can provide relatively accurate test results, it has significant drawbacks: First, the testing equipment is bulky and usually needs to be fixed on a workbench, making it unsuitable for continuous production lines; second, the operation is complex, requiring professional personnel for debugging and operation, which is difficult for novices to master quickly, increasing training costs and time; third, the test results are slow to be reported, often taking several seconds or even longer from the start of the test to the conclusion, making it impossible to quickly identify defective products on high-speed production lines, leading to low production efficiency; fourth, the frequent connection and disconnection of the equipment during testing can easily cause interface wear, increasing equipment maintenance costs; fifth, the test results rely on the operator's subjective judgment, which introduces human error, affecting the accuracy and consistency of the test.

[0004] While some improved testing equipment exists on the market, such as handheld waveform analyzers and portable signal generators, they still cannot solve the core problems mentioned above. Although these devices offer improved portability, they still require professional operators, involve cumbersome procedures, and cannot be seamlessly integrated with production lines, resulting in limited improvements in testing efficiency. More importantly, these devices often lack real-time feedback capabilities, failing to provide real-time indications of signal pass / fail status during testing. This forces testers to wait for the test to complete before making a judgment, further reducing production efficiency.

[0005] Furthermore, existing testing equipment typically requires complex pre-setting of parameters, and operators must be familiar with all the equipment's functions to conduct accurate tests, which is impractical in a high-speed production environment. Delays in test results also prevent the production line from promptly identifying and handling defective products, leading to a large number of qualified products being mistakenly judged as defective, or defective products flowing into the next process, increasing subsequent rework and repair costs. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, the purpose of this invention is to provide a fixture for testing the sine wave output signal of a set-top box. This simple, fast, and efficient fixture is used for rapid testing of the 22kHz sine wave S2 signal during set-top box production. This invention enables immediate feedback testing, improves the signal pass rate during production, and increases overall production efficiency.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows: A tooling for testing the sine wave output signal of a set-top box includes: a PCB board, a quick-connect connector, a waveform adjustment button, a debugging interface, a display screen, a setting button, and a power module. The PCB board has fixing holes around its perimeter for connecting support components. The display screen is fixed to the center of the PCB board. The debugging interface is fixed to one side of the display screen and close to the edge of the PCB board. The waveform adjustment button and the setting button are respectively fixed to both sides of the display screen. The quick-connect connector and the power module are respectively fixed to both ends of the PCB board. The quick-connect connector is connected to the S2 output interface of the set-top box.

[0008] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a test fixture that integrates a PCB board, quick-connect connector, display screen, setting buttons, debugging interface, waveform adjustment button, and DC power interface. This fundamentally solves the problems of low efficiency, complex operation, and reliance on specialized equipment and personnel in traditional set-top box S2-22kHz sine wave signal testing. The fixture uses a PCB board as its core carrier, highly integrating all functional modules to achieve integrated and automated testing. The quick-connect connector replaces the traditional threaded F-head connection method, and with its elastic snap-fit ​​structure, allows operators to securely connect and disconnect the set-top box S2 interface within one second without tools, significantly improving the testing cycle time and meeting the needs of high-speed production lines. Simultaneously, the display screen is fixed in the center of the PCB board, making the test results intuitively visible without relying on external oscilloscopes or professional analytical capabilities, significantly lowering the technical threshold for operators. The entire fixture is compact, portable, and can be flexibly deployed at different workstations. Its integrated design not only reduces the space occupied by the equipment but also improves the system's stability and anti-interference capabilities. Compared with existing technologies, this solution simplifies the testing process, increases speed, and enhances accuracy, transforming the originally cumbersome measurement process into a highly efficient "plug and play, results immediately" mode. This greatly improves the testing efficiency and quality control level in the set-top box production process, and has significant practical value and economic benefits.

[0009] In the aforementioned tooling, the support component is a screw, which can pass through the fixing hole to support the PCB board, and the screw can be connected to other equipment.

[0010] The aforementioned fixture includes a waveform detection unit located below the display screen. The waveform detection unit is electrically connected to the quick-connect connector. The built-in waveform detection unit is used to capture and analyze a 22kHz sine wave signal.

[0011] The aforementioned fixture, wherein the display screen is electrically connected to the waveform detection unit, is used to display the output waveform, frequency data and amplitude in real time, and to display "PASS" or "FAIL" according to the test results.

[0012] The aforementioned fixture also includes an alarm notification module on the PCB board. The alarm notification module is located on one side of the setting button and is electrically connected to the waveform detection unit. When the test result is "FAIL", it sends a signal to remind the user.

[0013] The aforementioned tooling includes a visual and auditory prompting module. When the test result is "PASS", only the display screen shows "PASS"; when the test result is "FAIL", the display screen shows "FAIL" and the alarm device in the alarm prompting module emits an alarm sound.

[0014] The aforementioned fixture, wherein the waveform detection unit includes a microcontroller and a high-precision sampling circuit, wherein the microcontroller acquires the analog signal output by the set-top box through the high-precision sampling circuit, converts it into a digital signal for processing, and compares the acquired signal with pre-stored qualified parameter values ​​to determine whether the signal meets the standard.

[0015] The aforementioned tooling includes a quick-connect connector with a resilient snap-fit ​​device that can be inserted into the groove of the set-top box interface.

[0016] The tooling described above uses an F-type quick-connect connector.

[0017] The aforementioned tooling uses a small LCD display screen, which is tightly integrated with the waveform detection unit. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the tooling structure according to an embodiment of the present utility model;

[0019] The reference numerals are as follows: 100 PCB board, 200 mounting hole, 300 quick-connect connector, 400 waveform adjustment button, 500 debugging interface, 600 display screen, 610 waveform detection unit, 700 setting button, 800 power module, and 900 alarm prompt function module. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below, with reference to Figure 1 This utility model provides a fixture for testing the sine wave output signal of a set-top box, including: a PCB board 100, a quick-connect connector 300, a waveform adjustment button 400, a debugging interface 500, a display screen 600, a setting button 700, and a DC voltage. The PCB board 100 has fixing holes 200 around its perimeter for connecting support components. The display screen 600 is fixed to the center of the PCB board 100. The debugging interface 500 is fixed to one side of the display screen 600 and close to the edge of the PCB board 100. The waveform adjustment button 400 and the setting button 700 are respectively fixed to the two sides of the display screen 600. The quick-connect connector 300 and the DC voltage are respectively fixed to the two ends of the PCB board 100. The quick-connect connector 300 is connected to the S2 output interface of the set-top box. This application integrates a PCB board 100, a quick-connect connector 300, a waveform adjustment button 400, a debugging interface 500, a display screen 600, a setting button 700, and a power module into a single integrated fixture. During testing, the fixture is directly plugged into the connector of the set-top box S2. The 22kHz signal is then activated using a remote control. The fixture directly tests whether the signal meets the requirements and displays the result on the screen of display screen 600. If the test signal does not meet the requirements, an alarm notification module 900 will alert the user, preventing the omission of defective products. This structure enables rapid and automated testing of the 22kHz sine wave output signal of the set-top box S2. This integrated design avoids the cumbersome process of requiring external oscilloscopes and other large equipment in traditional testing, significantly improving testing convenience. The PCB board 100, as the core carrier, organically integrates all functional modules, ensuring the stability of signal transmission and anti-interference capabilities. The quick-connect connector 300 directly interfaces with the set-top box, and the display screen 600 shows real-time results, allowing operators to complete tests without professional training, significantly reducing labor costs and error rates. The entire fixture has a compact structure, making it easy to deploy and move on the production line. It is particularly suitable for high-paced assembly line operations, effectively solving the problems of low testing efficiency, bulky equipment, and complex operation in existing technologies, and achieving real-time, simplified, and efficient testing.

[0021] Furthermore, this application does not limit the specific structure of the quick-connect connector 300. Preferably, the quick-connect connector 300 includes a resilient locking device that can be inserted into the groove of the set-top box interface. The quick-connect connector 300 uses an F-type connector. By incorporating the resilient locking device in the quick-connect connector 300, a quick and reliable connection with the set-top box S2 interface is achieved. The operator only needs to align the connector with the interface and insert it; the resilient locking device will automatically snap into the groove of the interface, completing the locking process, without the need for rotation and tightening as with traditional F-type connectors. This design reduces the connection time from the traditional 5-10 seconds to less than 1 second, greatly improving the test cycle time. Removal is easy and effortless; simply press the locking device. The resilient locking structure ensures the stability of the connection, maintaining good electrical contact even under slight shaking or vibration, avoiding signal interruption or test misjudgment due to loose connection. The quick-connect connector 300 uses an F-type connector, ensuring physical and electrical compatibility with the set-top box S2 output interface. The F-connector is the standard interface for RF coaxial cable connections. Using the F-connector as the basic design allows this fixture to seamlessly interface with the S2 interface of most set-top boxes on the market, eliminating the need for additional adapters or connectors and ensuring signal transmission integrity and low loss. Adding a quick-connect function retains the original high-performance advantages of the F-connector while overcoming the disadvantage of requiring manual tightening. Furthermore, this application does not limit the specific structure and form of the support component. Preferably, the support component is a screw that passes through the fixing hole 200 to support the PCB board 100. The screw can also connect to other equipment to achieve stable installation and flexible positioning of the fixture. This design not only firmly fixes the fixture to the workbench or production line support, preventing loosening or equipment drops due to accidental contact during testing, thus ensuring the accuracy of test results and equipment safety, but also allows for flexible adjustment of the fixture's height and angle according to the actual usage scenario, facilitating observation of the display screen 600 by operators of different heights. Preferably, four screws are used, fixed to the four corners of the PCB board 100. This detachable installation method allows the tooling to be quickly moved between different workstations, greatly enhancing its adaptability in mixed-model product production lines. Compared to an integrated fixed bracket, this design provides greater space utilization flexibility and layout freedom, meeting the dual requirements of modern electronic manufacturing workshops for equipment compactness and configurability. Furthermore, a waveform detection unit 610 is provided below the display screen 600 proposed in this application. The waveform detection unit 610 is electrically connected to the quick-connect connector 300, and the built-in waveform detection unit 610 is used to capture and analyze a 22kHz sine wave signal. This layout shortens the signal transmission path from the input end to the processing unit, effectively reducing signal attenuation and electromagnetic interference during long wire transmission, and improving the sensitivity and accuracy of detection.The waveform detection unit 610 directly captures the 22kHz sine wave signal from the set-top box and performs preliminary amplification and filtering, laying the foundation for subsequent accurate analysis. This integrated design makes the internal structure of the entire fixture more compact, avoiding cluttered external connecting cables, improving both the product's aesthetics and overall reliability. Simultaneously, placing the detection unit 610 near the display screen 600 facilitates high-speed data transmission and real-time display, ensuring immediate feedback of test results and enabling operators to make rapid judgments. This completely changes the traditional "measure first, analyze later" lag mode, greatly improving the production line's cycle efficiency. Of course, this application does not limit the specific type of the display screen 600. Preferably, the display screen 600 is a small LCD display screen, tightly integrated with the waveform detection unit 610. The small LCD display screen is compact and consumes little power, making it ideal for portable or compact devices. This helps keep the overall fixture size within a reasonable range, facilitating installation and use in space-constrained production line workstations. Its high contrast and clear display ensure clear reading of waveform and text information under various lighting conditions. The tight integration with the waveform detection unit 610 means that the signal transmission distance between the two is extremely short, the data delay is small, and the waveform can be refreshed in real time and displayed smoothly.

[0022] Furthermore, the display screen 600 is electrically connected to the waveform detection unit 610 to display the output waveform, frequency data, and amplitude in real time, and to display "PASS" or "FAIL" based on the test results. Operators do not need to rely on external instruments or complex parameter interpretation; they can obtain key information such as the output waveform, frequency, and amplitude simply by observing the display screen 600, and directly see the "PASS" or "FAIL" judgment result. This "one-click" result output method greatly simplifies the operation process, compressing the professional analysis process that originally required several seconds or even longer into instantaneous completion, significantly reducing the skill requirements for operators. The real-time display function allows for continuous monitoring of the signal status during testing, helping to detect intermittent faults or signal drift problems. The clear and unambiguous "PASS / FAIL" markings avoid human error and ensure the consistency of quality control standards. This design fundamentally solves the pain points of untimely feedback and unintuitive results in traditional testing methods, enabling the production line to achieve truly online rapid screening, effectively preventing defective products from flowing into the next process, and ensuring the quality stability of the final product. Furthermore, the PCB board 100 proposed in this application is also equipped with an alarm prompting module 900. The alarm prompting module 900 is located on one side of the setting button 700. The alarm prompting module 900 is electrically connected to the waveform detection unit 610, and sends a signal to remind the operator when the test result is "FAIL". By adding the alarm prompting module 900 to the PCB board 100 and electrically connecting it to the waveform detection unit 610, a complete abnormal early warning mechanism is constructed. When the detection result is "FAIL", the system automatically triggers an alarm signal to actively remind the operator. This proactive warning method compensates for the potential negligence that may occur when relying solely on visual observation, especially in noisy and busy production environments, and can effectively ensure that every defective product is detected and handled in a timely manner. The alarm prompting module 900 is designed to be located away from the main operating area to avoid interfering with normal testing, while still being within the operator's field of vision for easy and rapid response. Of course, this application does not limit the specific type and structure of the alarm prompting function module 900. Preferably, the alarm prompting function module 900 includes both visual and auditory prompts. When the test result is "PASS", only the display screen 600 displays "PASS"; when the test result is "FAIL", the display screen 600 displays "FAIL" and the alarm device in the alarm prompting function module 900 emits an alarm sound. When the test passes, only the display screen 600 displays "PASS", keeping the environment quiet and avoiding unnecessary interference; when the test fails, the display screen 600 simultaneously displays "FAIL" (should be "FAIL"), and the buzzer emits an alarm sound, creating a strong visual and auditory dual stimulus. This design ensures that even if the operator's eyes are temporarily away from the display screen 600 or the surrounding environment is noisy, the information of test failure can be perceived immediately.The combination of sound and light alarms is more reliable and effective than visual or auditory cues alone, significantly reducing the probability of missed alarms due to distraction. It is particularly suitable for high-intensity, fast-paced production operations, helping operators quickly identify, isolate, and handle problematic products, thereby minimizing the generation and spread of defective goods and ensuring the continuity of the production process and the reliability of product quality.

[0023] Furthermore, this application does not limit the specific type of the waveform detection unit 610. Preferably, the waveform detection unit 610 includes a microcontroller and a high-precision sampling circuit. The microcontroller acquires the analog signal output by the set-top box through the high-precision sampling circuit, converts it into a digital signal for processing, and compares the acquired signal with pre-stored qualified parameter values ​​to determine whether the signal meets the standard. The highly integrated digital signal processing unit is an STM32F103RCT6 microcontroller. It uses an ADC sampling circuit to acquire the signal output by the set-top box and compares it with qualified parameter values ​​in the database. If the comparison results match, a pass message is output; otherwise, a failure message is output. The microcontroller executes a complex signal processing algorithm to compare the acquired data with the pre-stored qualified parameter database in real time, automatically determining the signal quality. This microprocessor-based intelligent analysis replaces traditional manual image reading and subjective judgment, eliminating human error and ensuring the objectivity and consistency of the test results.

[0024] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fixture for testing the sine wave output signal of a set-top box, characterized in that, include: The PCB board (100), quick-connect connector (300), waveform adjustment button (400), debugging interface (500), display screen (600), setting button (700), and power module (800) are provided. The PCB board (100) has fixing holes (200) around its perimeter for connecting support components. The display screen (600) is fixed to the center of the PCB board (100). The debugging interface (500) is fixed to one side of the display screen (600) and close to the edge of the PCB board (100). The waveform adjustment button (400) and the setting button (700) are respectively fixed to the two sides of the display screen (600). The quick-connect connector (300) and the power module (800) are respectively fixed to the two ends of the PCB board (100). The quick-connect connector (300) is connected to the S2 output interface of the set-top box.

2. The tooling according to claim 1, characterized in that, The support is a screw that can pass through the fixing hole (200) to support the PCB board (100) and can be connected to other devices.

3. The tooling according to claim 1, characterized in that, A waveform detection unit (610) is provided below the display screen (600). The waveform detection unit (610) is electrically connected to the quick-connect connector (300). The waveform detection unit (610) is used to capture and analyze a 22KHz sine wave signal.

4. The tooling according to claim 3, characterized in that, The display screen (600) is electrically connected to the waveform detection unit (610) and is used to display the output waveform, frequency data and amplitude in real time, and to display "PASS" or "FAIL" according to the test results.

5. The tooling according to claim 4, characterized in that, The PCB board (100) is also provided with an alarm prompting function module (900). The alarm prompting function module (900) is located on one side of the setting button (700). The alarm prompting function module (900) is electrically connected to the waveform detection unit (610). When the test result is "FAIL", a signal is issued to remind the user.

6. The tooling according to claim 5, characterized in that, The alarm prompting function module (900) includes two parts: visual prompts and auditory prompts. When the test result is "PASS", only the display screen (600) displays "PASS"; when the test result is "FAIL", the display screen (600) displays "FAIL" and the alarm device in the alarm prompting function module (900) emits an alarm sound.

7. The tooling according to claim 3, characterized in that, The waveform detection unit (610) includes a microcontroller and a high-precision sampling circuit. The microcontroller obtains the analog signal output by the set-top box through the high-precision sampling circuit, converts it into a digital signal for processing, and compares the collected signal with the pre-stored qualified parameter values ​​to determine whether the signal meets the standard.

8. The tooling according to claim 1, characterized in that, The quick-connect connector (300) includes a resilient snap-fit ​​device that can be inserted into a groove of the set-top box interface.

9. The tooling according to claim 7, characterized in that, The quick-connect connector (300) is an F-type connector.

10. The tooling according to claim 3, characterized in that, The display screen (600) is a small LCD display screen, which is tightly integrated with the waveform detection unit (610).

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