YOJOCK USB C 360W Digital Multimeter User Manual

1. Introduction

This manual provides comprehensive instructions for the safe and effective use of your YOJOCK USB C 360W Digital Multimeter. This versatile device is designed to accurately measure and monitor various electrical parameters of USB-C devices, including voltage, current, capacity, electrical quantity, power, temperature, and charging time. It also records maximum power, current, and voltage during the charging process, making it an essential tool for testing power supply quality and optimizing device charging performance.

2. Safety Information

Please read and understand all safety warnings before operating the device. Failure to do so may result in injury or damage to the product.

• Do not disassemble or modify the device. Unauthorized modifications may void the warranty and pose safety risks.
• Keep the device away from water, moisture, and extreme temperatures.
• Use the device only with compatible USB-C devices and within the specified voltage (4-30V) and current (0-12A) ranges.
• Avoid dropping or subjecting the device to strong impacts.
• If the device shows signs of damage or malfunction, discontinue use immediately.

3. Product Overview

The YOJOCK USB C Tester is a compact and portable device featuring a clear digital display for real-time data monitoring. It is equipped with a USB-C input and output port for seamless integration into your charging setup.

Figure 3.1: YOJOCK USB C 360W Digital Multimeter. This image shows the compact design of the USB C tester with its vibrant display showing various electrical parameters.

Figure 3.2: Display Interface and Supported Protocols. The screen displays real-time voltage, current, power, and other metrics, along with an indication of supported fast charging protocols like Huawei FCP/SCP, QC 2.0/3.0, PD 2.0/3.0, Samsung AFC, PE, PPS, DASH VOOC, and Super VOOC.

4. Setup

Setting up your USB C tester is straightforward:

1. Connect the USB-C tester's input port to your power source (e.g., wall charger, power bank, computer's USB-C port).
2. Connect your device (e.g., smartphone, tablet, laptop) to the tester's output port using a compatible USB-C cable.
3. The tester's screen will automatically light up and display real-time charging data once both input and output connections are established.

Figure 4.1: Connection Requirement. This image illustrates that the USB-C tester screen will only light up if both the output and input ports are connected, due to PD protocol limitations.

Figure 4.2: Testing Real-Time Voltage and Current. The tester is shown connected between a wall charger and a smartphone, displaying live charging data.

5. Operating Instructions

The YOJOCK USB C Tester offers a range of functions to monitor and analyze your charging processes:

• Enhanced Functionality: This USB tester can record the maximum power, current, and voltage achieved during the charging process. It also detects and displays real-time voltage, current, capacity, electrical quantity, power, temperature, and charging time, facilitating comprehensive power supply and quality testing.
• Wide Applicability: Equipped with a stable 12A high-current connector, the tester supports a broad measurement range of 0-12A current and 4V-30V voltage. This makes it suitable for a wide array of 3C digital products, offering an economical solution for optimizing device charging performance.
• Enhanced Curve Function: The device features an improved curve function for better real-time recording of voltage and current fluctuations. You can adjust the curve display time (5 minutes/15 minutes/60 minutes/2 hours) by long-pressing the control button. The voltage and current scales for each cell automatically adjust based on the actual real-time values.
• Fast Charging Protocol Detection: The power meter supports various fast charging protocols, including PD2.0/3.0, QC2.0/3.0, FCP, SCP, AFC, PE, DASH VOOC, and Super VOOC. This capability ensures accurate testing of different chargers, power banks, and USB-C devices.
• Data Measurement Guarantee: A power-off memory function is integrated, which automatically stores capacity and energy data even when the mobile power supply is disconnected. This feature allows for convenient later viewing and measurement of mobile power capacity.

Figure 5.1: Bidirectional Current Test Function. The tester supports current measurement from 0-12A and voltage from 4-30V, indicating its capability to test power flow in both directions.

Figure 5.2: Comprehensive Monitoring. This image shows the USB C tester connected to a power strip and a smartphone, displaying detailed real-time metrics including voltage, current, power, and temperature.

Figure 5.3: Compatible with Various USB C Devices. The tester is shown alongside a laptop, wall adapter, smartphone, and power bank, illustrating its broad compatibility with different USB-C enabled devices.

6. Specifications

7. Troubleshooting

If you encounter issues with your YOJOCK USB C Tester, refer to the following common problems and solutions:

• Screen not lighting up: Ensure that both the input and output USB-C ports are connected to a power source and a device, respectively. Due to PD protocol limitations, the screen will only activate when both connections are established.
• Inaccurate readings: Verify that all connections are secure and that the device being tested is within the specified voltage (4-30V) and current (0-12A) ranges of the tester.
• No data recording after power-off: The device features an automatic power-off memory function that stores capacity and energy data. Ensure the device was connected long enough for data to be recorded before power loss.
• Display flickering or freezing: Disconnect and reconnect the tester. If the issue persists, try using a different power source or USB-C cable.

8. Maintenance

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

• Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the display or casing.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Keep it in its original packaging or a protective case when not in use to prevent dust and physical damage.
• Handling: Handle the device with care. Avoid dropping it or exposing it to strong vibrations.

9. Warranty and Support

Your YOJOCK USB C 360W Digital Multimeter comes with a commitment to quality and customer satisfaction.

• Warranty: The product is covered by an 18-month warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use.
• Returns: We offer 30-day hassle-free returns. Please refer to your purchase platform's return policy for detailed instructions.
• Customer Support: For any questions, technical assistance, or warranty claims, please contact YOJOCK customer service. We aim to provide 24-hour customer support to address your concerns promptly.