Enhanced Universal Functional Testing System
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FCT Software Platform
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Enhanced Universal Functional Testing System
I. System Overview
1. Main Control Board Technical Specifications
1) Channel Count: 8 channels, with optional 2-channel switching; resistance and voltage measurements share a common analog bus.
2) DC Characteristics:
A. Input impedance: 10 MΩ
Input protection: 600V.
B. Voltage Range:
DC Voltage: -400 to +400V, Accuracy: 1%
Direct Current:
1 µA to 100 µA Accuracy: 5%
100 µA to 1 A Accuracy: 3%
3) Communication Characteristics:
A. Input impedance: 1 MΩ
Input protection: 380V
B. AC Voltage RMS: 0–220V, Crest Factor < 3, Frequency 5Hz – 1kHz, Accuracy 3%
RMS value of alternating current:
1 µA to 100 µA Accuracy 5%
100µA to 1A Accuracy: 3%
4) Frequency Acquisition
A. Frequency Range:
2Hz to 10kHz, voltage 0–220V, accuracy 2‰
10 kHz to 4 MHz, Voltage: 0–30 V, Accuracy: 2‰
5) Resistance Measurement (Constant Voltage Measurement)
1Ω to 1MΩ, Accuracy: 3%
1 MΩ ~ 10 MΩ, Accuracy: 5%
2. Technical specifications of the channel switching board,
1) Channel Count: 24 channels, which can be used either as channel expansion for the main control board or as standalone acquisition channels.
2) Voltage Acquisition
A. Voltage range: -300 to +300V, Accuracy: 1%
3) Frequency Acquisition
A. Frequency range: 2 Hz to 1 kHz, with an accuracy of 2‰
3. Technical Specifications for the Programmable Power Supply Board
1) Channels: 2 channels, capable of outputting either constant current or constant voltage
2) Voltage range: 1.5–28V, step size 0.01V, accuracy 1%
3) Features overcurrent protection with constant current ranging from 100mA to 1.5A, and a current-limiting accuracy of 1mA—fully adjustable.
4. Technical Specifications for Positive and Negative Control Input/Output Board
1) Channels: 16-channel output with positive and negative terminal voltages (every 8 channels form a group)
16-channel digital input signals (compatible with 1.8–30V voltage).
2) Voltage and Current: Input current limiting up to 30V, with a limit of 10 milliamps.
Output current limiting up to 30V (with an externally supplied voltage range of 1.8–30V), and a maximum current limit of 350 mA.
5. Technical Specifications for the Digital Output Board
1) Channels: 24 channels
2 ) Overcurrent capacity: 2A
3. Functions and Features
1. Circuit board functional testing system capable of testing resistance, voltage, current, frequency, digital I/O, and more.
2. Capable of providing a programmable power supply with output voltage up to 30V, featuring positive and negative control inputs/outputs, as well as digital switching outputs.
3. The main control board and all functional modules are equipped with STM32 chips, ensuring fast operation and stable testing performance.
4. It features a Pad as the display screen, offering a large viewing area and simple operation. Powered by the Windows system, it aligns with the familiar operating habits of most users while also enabling all standard Windows functions—making it incredibly powerful. The host computer software runs seamlessly on Windows, allowing for convenient modification and expansion of its functionality.
5. It can be used both as an embedded solution and as a wired system, allowing you to choose the mode that best suits your specific application needs.
6. Supports external serial instrument devices, enabling serial communication to control other instruments for collaborative testing, thus facilitating system expansion.
7. Separation of programming and testing interfaces: The programming interface allows users to create test files, while the testing interface handles the actual testing process. This setup prevents unauthorized modifications to the test program, ensuring data remains secure and reliable. Additionally, once the test data is downloaded into the EPROM, it can only be accessed or altered by the host computer—further enhancing data security.
8. Utilizes a table-based programming interface (similar to the inspection process document format used on-site), making it easy to create test steps and allowing users to freely adjust the sequence of test steps, as well as flexibly combine test timing and logical relationships.
9. Universal Design: During both software and hardware design, we’ve carefully considered versatility. As long as the hardware specifications of the tester fall within the required range, customers can easily swap out different products under test—simply by replacing the corresponding test fixtures and loading the appropriate test files—to carry out the testing process seamlessly.
10. It features automatic full-function testing and manual single-step test selection, as well as step-by-step loop testing capabilities, making it easy for engineers to debug the board under test.
11. When the specified defect in the circuit board under test—such as a power short circuit—occurs, the system automatically stops the test to protect both the board being tested and the testing system, preventing the fault from escalating.
12. During debugging, you can operate the Pad either via the touchscreen or by connecting a USB keyboard and mouse through a USB HUB, making it convenient for both debugging and data modification.
5. Targeted at the customer base
1. This service is available to manufacturers and processors of jigs and fixtures. When accepting orders, some customers may have simple functional testing requirements—these can be met by selling them board cards.
2. Compare smaller PCB manufacturers that produce relatively high volumes. Smaller PCB manufacturers typically handle boards with simpler functionality tests, while those producing higher volumes often require more advanced functional testing equipment—and thus have higher price expectations. As a result, these types of customers can benefit from purchasing multiple units at lower prices.
3. No high voltage or high-power supply is required; aside from serial communication, there are no other types of communication interfaces. It can test voltage, current, resistance, and frequency. Most circuit boards of this type are suitable for testing. If communication testing is needed, the board can be easily expanded to accommodate it.