YOJOCK USB C Tester Power Meter YJ-TC01 Instruction Manual

1. Introduction

The YOJOCK USB C Tester Power Meter YJ-TC01 is a versatile digital multimeter designed to monitor various electrical parameters of USB Type-C devices. It provides real-time data on voltage, current, capacity, electric quantity, power, temperature, resistance, and charging time. This device is an essential tool for evaluating the performance of USB-C chargers, cables, power banks, and other digital peripherals.

Image 1.1: The YOJOCK USB C Tester Power Meter YJ-TC01.

Key Features:

• Multi-function Measurement: Detects voltage (4-30V), current (0-6.5A), capacity, electric quantity, power, temperature, resistance, and charging time.
• Fast Charging Protocol Detection: Supports QC2.0/3.0/4.0, Super VOOC, and electrical signal monitoring during PD2.0/3.0 fast charging protocols.
• Power-off Data Storage: Automatically stores capacity and energy data, allowing for convenient review of mobile power capacity and energy measurements.
• Wide Compatibility: Suitable for quality inspection of various 3C digital peripheral products.
• User-Friendly Interface: Simple button operation for screen switching, display rotation, and data reset.

2. Package Contents

Upon opening the package, ensure all items are present and in good condition:

• YOJOCK USB C Tester Power Meter YJ-TC01
• User Manual

Image 2.1: The YOJOCK USB C Tester and its user manual as included in the package.

3. Setup and Connection

The YOJOCK USB C Tester is designed for straightforward inline connection between your power source and the device to be tested.

Connecting the Tester:

1. Identify the USB-C input port on the tester. This port connects to your power source (e.g., wall charger, power bank, computer USB-C port).
2. Connect your device (e.g., smartphone, tablet, laptop) to the USB-C output port of the tester using a compatible USB-C cable.
3. Once connected, the tester's screen will automatically light up and begin displaying real-time measurement data.

Image 3.1: Connecting the USB C Tester for fast charging protocol detection.

Image 3.2: The USB C Tester is compatible with a wide range of USB-C devices.

Image 3.3: The flexible cable design and antioxidant input port for durability and ease of use.

4. Operating Instructions

The YOJOCK USB C Tester features a single button for controlling its display and resetting data.

Button Functions:

• Single Click: Press the button once to cycle through different display screens, showing various measurement parameters.
• Double Click: Double-click the button to rotate the displayed content by 180 degrees, adjusting for viewing orientation.
• Long Press (3 seconds): Press and hold the button for approximately 3 seconds to clear all accumulated capacity, electric quantity, and time data. This is useful for starting new measurement cycles.

Image 4.1: Understanding the display interface and its various parameters.

Monitoring Charging Status:

The tester allows you to monitor the charging status of your devices in real-time. This includes observing voltage, current, and power delivery to ensure optimal charging performance.

Image 4.2: Real-time monitoring of charging status for a laptop.

Official Product Video:

5. Maintenance

To ensure the longevity and accurate performance of your YOJOCK USB C Tester, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the device. Avoid using liquid cleaners or solvents, which may damage the screen or internal components.
• Storage: Store the tester in a cool, dry place away from direct sunlight and extreme temperatures. When not in use, it is recommended to store it in its original packaging or a protective case.
• Handling: Avoid dropping the device or subjecting it to strong impacts. The screen and internal circuitry are delicate.
• Connection Ports: Ensure the USB-C ports are free from dust and debris before connecting cables.

6. Troubleshooting

If you encounter issues with your YOJOCK USB C Tester, refer to the following common troubleshooting steps:

• Display Not Lighting Up:
  • Ensure the tester is correctly connected to a power source and a device. The tester requires both input and output connections to activate the display.
  • Verify that the power source is active and providing power.
  • If using a PD (Power Delivery) charger, ensure the Micro USB adapter is inserted into the tester if required by your specific model for initial power-up, then connect the PD charger.
• Inaccurate Readings:
  • Ensure all connections are secure and free from loose contacts.
  • Test with different cables and chargers to rule out faulty accessories.
  • Perform a data reset by long-pressing the button for 3 seconds.
• Device Not Charging or Charging Slowly:
  • Check the voltage and current readings on the tester. Low voltage or current may indicate an issue with the charger, cable, or the device itself.
  • Ensure your charger and cable support the fast charging protocol required by your device. The tester can help identify if the correct protocol is being negotiated (though the specific protocol name may not be displayed).
  • Some devices, especially laptops, require higher power delivery (e.g., 15V or 20V) than standard phone chargers. Ensure your power source meets the device's requirements.
• Screen Orientation Issue:
  • Double-click the button to rotate the display content by 180 degrees for better viewing.

7. Specifications

Image 7.1: Product dimensions for the USB C Tester.

8. Warranty and Support

YOJOCK products are manufactured to high-quality standards. For specific warranty information, technical support, or service inquiries, please refer to the contact information provided with your product packaging or visit the official YOJOCK website. Please retain your proof of purchase for warranty claims.