1. Introduction
The DewinLVD FNAC-28 USB Tester is a versatile and high-precision instrument designed for monitoring voltage, current, and power in USB and Type-C connections. It features a 1.06-inch HD TFT color LCD screen for clear data display and supports various testing scenarios, including fast charge protocol detection and curve analysis. This manual provides essential information for the safe and effective use of your device.
2. Product Overview
2.1 Key Features
- Real-time Monitoring: Simultaneously displays voltage, current, and power.
- High-Precision Measurement: Utilizes a 16-bit ADC chip for accurate data.
- Data Recording: Stores up to 5 sets of data, with intelligent battery capacity calculation.
- HD TFT Color LCD: 1.06-inch screen for clear and easy-to-read results.
- Bidirectional Current: Supports 6.5A high-current USB and bidirectional Type-C output.
- Multi-Interface Compatibility: Equipped with dual USB-A and Type-C male connectors.
- Fast Charge Protocol Detection: Automatic detection and intelligent activation for various protocols.
- Curve Detection Modes: Offers real-time, D+D- voltage, and high-speed ripple curve analysis.
2.2 Components
The DewinLVD FNAC-28 USB Tester features multiple input and output ports, a display screen, and control buttons for navigation.
- Input Monitoring Port (USB-A): Connects to a power source (charger, power bank).
- Input Monitoring Port (Type-C): Connects to a power source (charger, power bank).
- Output Monitoring Port (USB-A): Connects to the device being charged/tested.
- Output Monitoring Port (Type-C): Connects to the device being charged/tested.
- Screen: Displays measurement data and menu options.
- Button Area: Used for navigation and selection within the menu.
3. Setup
To begin using the DewinLVD FNAC-28 USB Tester, follow these simple steps:
- Connect to Power Source: Plug the USB-A or Type-C input connector of the tester into your power source (e.g., wall charger, power bank, computer USB port). The tester's screen should power on.
- Connect Device: Plug the device you wish to test or charge (e.g., smartphone, tablet, laptop) into the corresponding USB-A or Type-C output port on the tester.
- Observe Readings: The screen will immediately display real-time voltage, current, and power readings.
4. Operating Instructions
4.1 Display Interface
Upon connection, the tester's main screen provides a clear overview of the electrical parameters.
- Voltage (V): Displays the current voltage in Volts.
- Current (A): Displays the current flow in Amperes.
- Power (W): Displays the calculated power in Watts.
- Additional information such as temperature, accumulated capacity (Ah), and energy (Wh) may also be displayed depending on the selected mode.
4.2 Menu Navigation
Use the physical buttons on the side of the tester to navigate through menus and adjust settings.
- Brightness Adjustment: Adjust the display backlight intensity.
- Standby Time Setting: Configure the duration before the device enters standby mode.
- Temperature Symbol Switching: Toggle between Celsius (°C) and Fahrenheit (°F).
- Language Switching: Select between English and Chinese. Exercise caution when changing language to avoid difficulty in reverting.
- Simulate DASH/Apple2.4A: Options to simulate specific charging protocols for testing.
4.3 Data Recording
The tester can store up to 5 sets of data, which is useful for tracking charging performance over time or after power interruptions.
- Data sets automatically save accumulated capacity (Ah) and energy (Wh).
- Intelligent calculation of integrated battery capacity helps monitor power status.
- Refer to the on-screen prompts or the full manual for instructions on how to save, view, or clear data records.
4.4 Fast Charge Protocol Detection
The device can automatically detect and trigger various fast charging protocols.
- Connect a compatible fast charger and device to the tester.
- The tester will display the detected fast charging protocol, confirming compatibility and active charging mode.
4.5 Curve Detection Modes
The FNAC-28 offers three distinct curve detection modes for detailed analysis of electrical signals.
- Mode 1: Real-time Voltage and Current Curve: Displays live graphs of voltage and current fluctuations.
- Mode 2: D+D- Voltage Curve: Shows the voltage curves on the data lines (D+/D-), useful for protocol analysis.
- Mode 3: High-speed Voltage Ripple Curve: Provides a detailed view of voltage ripple, indicating power supply stability.
4.6 Multi-Scenario Testing
The FNAC-28 USB Tester is suitable for a variety of testing applications.
- Charger Aging Test: Monitor charger performance over extended periods.
- Cable Charging Test: Evaluate the efficiency and integrity of charging cables.
- Laptop Charging Test: Verify charging parameters for laptops and other high-power devices.
- Power Bank Charging Test: Assess the input and output performance of power banks.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or solvents.
- Storage: Store the tester in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the device or subjecting it to strong impacts.
- Moisture: Keep the device away from water and high humidity to prevent damage.
6. Troubleshooting
- Device Not Powering On: Ensure the tester is securely connected to a functional power source. Check if the power source itself is working.
- No Readings Displayed: Verify that both the input and output connections are firm. Ensure the connected device is drawing power.
- Inaccurate Readings: Ensure all cables are in good condition. Test with different cables and power sources to isolate the issue.
- Screen Freezes or Malfunctions: Disconnect and reconnect the tester to reset it. If the issue persists, contact support.
- Safety Warning: If you observe smoke, unusual odors, or excessive heat from the device, immediately disconnect it from all power sources and discontinue use. Do not attempt to repair the device yourself.
7. Specifications
| Parameter | Value |
|---|---|
| Manufacturer | dewinlvd |
| Model Reference | FNAC-28 |
| Package Dimensions | 11.7 x 5.6 x 3.6 cm |
| Weight | 44 grams |
| Minimum Operating Voltage | 4 Volts |
| Maximum Operating Voltage | 24 Volts |
| Maximum Current | 6.5 Amperes |
| Power Source | Electric cable |
| Color | Black |
| Compliant Specifications | IEC 61010-1 |
| Country of Origin | China |
8. Warranty Information
Specific warranty details for the DewinLVD FNAC-28 USB Tester may vary depending on your region and point of purchase. Please retain your proof of purchase. For detailed warranty terms and conditions, refer to the documentation provided with your product or contact the seller directly.
9. Support
If you encounter any issues or have questions regarding the operation of your DewinLVD FNAC-28 USB Tester that are not covered in this manual, please contact the retailer or manufacturer's customer support for assistance. Provide your model number (FNAC-28) and a detailed description of the issue when seeking support.