Uživatelská příručka k testeru YOJOCK USB C

1. Úvod

The YOJOCK USB C Tester is a versatile 2-in-1 digital multimeter designed to accurately measure various electrical parameters of your USB and Type-C devices. This compact and portable tool allows you to monitor voltage, current, capacity, electric quantity, power, temperature, resistance, and charging time. It is an essential gadget for checking the performance of chargers, cables, and power banks, ensuring optimal and safe charging for your electronic devices.

The YOJOCK USB C Tester is a versatile digital multimeter designed to measure various electrical parameters of USB and Type-C devices.

2. Vlastnosti produktu

• Upgraded Multifunctional Design: Detects Voltage (3.6V-32V), Current (0-8.0A), Capacity, Electric Quantity, Power, Temperature, Resistance, and Charging Time. Ideal for assessing charging performance of wall/car/solar panel chargers and USB cables.
• Latest IPS Color Display: Features 8 IPS main color screen display interfaces for easy switching and clear data readability. Larger fonts are available in one mode for quick viewIng.
• Široká kompatibilita: Includes an OTG adapter and supports PD3.0/PD2.0, QC3.0/QC2.0, BC1.2, USB A, and USB C ports. Compatible with a broad range of devices including updated iPhones (13/12/11/X/Xs quick charging), MacBook Pro, Dell XPS, HP Spectre, and more.
• Power Bank Capacity Testing: Allows for accurate measurement of power bank capacity by fully charging, clearing data, and then continuously discharging through a load or mobile phone.
• Professional Safety Guard: Vybaveno přepěťovacím regulátoremtage, nadproud, podvoltage, and low energy protection. Automatically cuts off output to prevent damage and saves data during sudden power loss.

The tester features an upgraded IPS color display with 8 main interfaces, allowing users to switch views for clear data readability, including voltage, current, capacity, and more.

A visual representation of the 12 main display interfaces available on the J7-c USB Tester, showing various data views and system settings.

3. Nastavení a připojení

The YOJOCK USB C Tester is designed for straightforward setup. Simply connect it inline between your power source (charger, power bank) and the device you wish to test.

3.1 Základní připojení

1. Identify the appropriate input port on the tester (USB Input, Type-C Input, Micro USB Input) based on your power source.
2. Plug the tester's input into your charger or power bank.
3. Connect your device's charging cable to the corresponding output port on the tester (USB Output, Type-C Output).
4. The display will automatically light up and begin showing real-time measurements.

Easily test the charging speed and quality of USB cables by connecting them through the tester.

3.2 Connecting to PD Chargers

When using a Power Delivery (PD) charger, ensure both the Type-C input of the USB tester and the device are connected to the PD charger. The tester's screen will only light up once both connections are established, indicating proper power flow for PD protocols.

Proper connection method for PD chargers: the tester screen lights up only when both USB C input and output are connected to the PD charger and device.

3.3 Using the OTG Adapter

The included OTG adapter allows the USB C Tester to read data from various peripherals such as keyboards, mice, and gaming controllers, expanding its diagnostic capabilities beyond just power measurement.

Included OTG adapter supports reading data from keyboards, mice, and gaming controllers, expanding the tester's utility.

4. Návod k obsluze

The YOJOCK USB C Tester is operated primarily through a single button, allowing for easy navigation and data management.

4.1 Navigating Display Interfaces

Short press the button to cycle through the 8 main IPS color display interfaces. Each interface presents different data sets or visual representations of the measurements (e.g., voltage, current, power, capacity, temperature, resistance, time).

The device allows for screen rotation by long-pressing the button, enhancing usability in different orientations.

4.2 Resetování dat

• Quick Double-Click: Resets the accumulated capacity (mAh) data.
• Quick Triple-Click: Resets the electric energy (Wh) data.
• Dlouhé stisknutí: Resets all accumulated data including capacity, power, and time. This is useful for starting a new measurement cycle.

4.3 Testing Power Bank Capacity

To accurately test a power bank's capacity:

1. Fully charge the power bank.
2. Insert the USB C Tester into the power bank's output port.
3. Double-click the button to clear any previous data.
4. Connect a load (e.g., a mobile phone or a dedicated USB load resistor) to the tester's output to initiate continuous discharge.
5. Ensure the discharge voltage is 5V or 9V for accurate calculation. The displayed mAh value needs to be multiplied by a factor (1.35 for 5V discharge, 2.45 for 9V discharge) to get the exact battery capacity of the power bank.

4.4 Otočení obrazovky

To rotate the display screen for better viewing angles, long press the button until the settings menu appears. Navigate to the "Screen Rotation" option (usually option 4) and long press to select it. Then, navigate to "Exit" (usually option 9) and long press to save and exit the settings.

5. Údržba

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

• Čištění: Use a soft, dry cloth to clean the device. Avoid using abrasive cleaners or solvents that could damage the display or casing.
• Skladování: Store the tester in a cool, dry place away from direct sunlight and extreme temperatures. Utilize the provided storage case to protect it from dust and physical damage.
• Zacházení: Handle the device with care. Avoid dropping it or subjecting it to strong impacts, as this can affect its internal components and accuracy.

6. Řešení problémů

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

• Displej se nerozsvítí:
  • Ensure the tester is correctly connected between a live power source and a device drawing power.
  • For PD chargers, confirm both input and output are connected as described in Section 3.2.
  • Check if the Micro USB adapter is properly inserted if you are using that input.
• Nekonzistentní čtení:
  • Ujistěte se, že všechna připojení jsou bezpečná a bez nečistot.
  • Try using different cables and chargers to isolate if the issue is with the tester or other components.
  • Reset the data (long press the button) to clear any accumulated readings that might be affecting new measurements.
• Screen Orientation Issues:
  • If the screen orientation is incorrect, follow the steps in Section 4.4 to adjust the screen rotation through the system settings.
• Automatic Output Cut-off:
  • The tester has built-in safety features (over-voltage, nadproud, podvoltage, low energy protection). If the output cuts off, it indicates that the connected device or power source exceeded safe operating parameters. Disconnect immediately and check your setup.

7. Specifikace

8. Záruka a podpora

For warranty information regarding your YOJOCK USB C Tester, please contact the seller directly. The manufacturer, YOJOCK, handles warranty claims and provides support for their products.

An official User Manual (PDF) is available for download for more detailed instructions and information:

Stáhnout uživatelskou příručku (PDF)