1. Introduction
The Diymore USB C Power Meter Tester is a versatile digital multimeter designed for monitoring USB-C power delivery. It provides real-time measurements of voltage, current, and wattage, and supports various fast charging protocols including PD3.1. This device is ideal for testing the performance of USB-C chargers, cables, and devices, ensuring optimal and safe power delivery.
Figure 1: Front view of the Diymore USB C Power Meter Tester, displaying its screen and connection ports.
2. Safety Information
- Do not expose the device to moisture or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
- Ensure proper connection to USB-C ports to prevent damage to the tester or connected devices.
- Operate within the specified voltage and current limits (4-40V, 0-12A) to prevent overload.
3. Package Contents
- 2 x Diymore USB C Power Meter Testers
- Instruction Manual (this document)
4. Product Overview
The Diymore USB C Power Meter Tester features a compact design with a durable CNC metal casing and an HD IPS display for clear readings. It includes buttons for navigation and mode selection.
Figure 2: The tester's CNC metal casing and HD IPS display for real-time data.
Key Features:
- Advanced Testing: Supports PD3.1 protocol testing with up to 240W power delivery and a voltage range of 4-30V.
- High Capacity: Handles up to 12A high current, providing comprehensive testing for voltage, amperage, and wattage.
- Protocol Support: Compatible with multiple fast charging protocols including PD/QC2.0/3.0/4.0 and MTK.
- Display Features: LCD screen shows real-time measurements with color-coded readings for voltage, current, and power.
- Voltage Modes: Supports fixed voltage modes of 5V, 9V, 12V, 15V, 20V, and 28V for thorough power delivery testing.
- Portability: Compact and lightweight design for easy transport.
Figure 3: The compact size of the tester, highlighting its portability.
5. Setup and Basic Operation
5.1 Initial Connection
- Connect the male USB-C end of the tester to a power source (e.g., charger, power bank).
- Connect your device (e.g., smartphone, laptop) to the female USB-C port of the tester using a compatible USB-C cable.
- The tester's display will automatically power on and show real-time measurements.
5.2 Navigating Display Pages
The tester features multiple display pages to show various data points. Use the 'OK' button to cycle through these pages.
Figure 4: The three main display pages, offering enhanced functionality and detailed measurements.
5.3 PDE-Marker Data Cable Inspection
The tester can inspect data cables for their capabilities, including voltage, current, and other parameters, especially for 240W fast charging cables.
Figure 5: The tester inspecting a data cable's capabilities during charging.
6. Advanced Operating Modes
6.1 Protocol Testing
The device supports automatic detection and testing of various fast charging protocols. This allows you to verify if a charger or device is utilizing the expected charging standard.
Figure 6: The tester confirming compatibility with various fast charging protocols.
Figure 7: Automated detection of charging protocols, displaying supported standards.
Figure 8: The automatic protocol test interface, showing status and supported protocols.
6.2 Ripple Measurement
The ripple measurement function allows you to analyze the stability of the power output. Excessive ripple can indicate an unstable power supply.
Figure 9: The ripple measurement interface, showing voltage and current curves over time.
6.3 Curve Measurement
Monitor real-time voltage, current, and power changes over time with the curve measurement feature. This is useful for observing charging cycles or power fluctuations.
Figure 10: The curve measurement interface, illustrating real-time power delivery dynamics.
7. Specifications
| Feature | Specification |
|---|---|
| Absolute Withstand Voltage | 0-40V |
| Absolute Current | 0-16A |
| Absolute Power | 0-240W (typical value: 0.0-140.0W) |
| Measurement Voltage | 3.3-40V (typical value: 4-30V) |
| Measurement Current | 0-12A |
| Measurement Power | 280W |
| Temperature Measurement Range | 0-99°C |
| Sampling Frequency | 2-5MHz |
| QC Protocol Support Version | 2.0/3.0/4.0+ |
| Gravity Rotation Screen | 180° |
| Dimensions (L x W x H) | 3.5 x 3.5 x 1 inches |
| Item Weight | 4 ounces |
8. Troubleshooting
- No Display: Ensure the tester is properly connected to a power source and a device. Check if the power source is active.
- Inaccurate Readings: Verify that the cables used are in good condition and fully compatible with the power levels being tested. Some devices or cables may interfere with readings.
- Protocol Detection Issues: Ensure both the charger and the device support the fast charging protocol you are trying to test. Some proprietary protocols may not be fully supported.
- Device Not Charging: If the device does not charge when connected through the tester, try connecting the device directly to the charger to rule out the tester or cable as the cause.
9. Maintenance
- Clean the device with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Store the tester in a cool, dry place away from direct sunlight and extreme temperatures.
- Protect the USB-C connectors from dust and debris when not in use.
10. Warranty and Support
The Diymore USB C Power Meter Tester comes with an 18-month warranty from the date of purchase. For technical support, warranty claims, or any inquiries, please contact Diymore customer service through the retailer's platform or the official Diymore website. Please have your purchase details and model number (A1_KBAI0058-009_US) ready when contacting support.
