KWS-066C USB Tester User Manual

Product Overview

The KWS-066C USB Tester is a compact device designed to measure various electrical parameters of USB connections. It features a display and two USB-C ports for versatile input and output.

The device's display (labeled 8 in the diagram) shows the following parameters:

• Voltage (labeled 1): Displays the current voltage, e.g., 5.000V.
• Timing (labeled 2): Shows elapsed time, e.g., 00:00:00T.
• Power (labeled 3): Indicates the power consumption, e.g., 000.000W.
• Resistance (labeled 4): Measures resistance, e.g., 0005.1Ω.
• Current (labeled 5): Displays the current flow, e.g., 6.500A.
• Capacity (labeled 6): Shows accumulated capacity, e.g., 000001mAh.
• Energy (labeled 9): Indicates accumulated energy, e.g., 000008mWh.
• Temperature (labeled 10): Displays the device's internal temperature, e.g., 15 °C.

A button (labeled 7) is located above the display for functional control. The device includes a Type-C Female Port (labeled 11) for input/output and a Type-C Male Port (labeled 12) for output/input, enabling bidirectional charging measurement.

Product Parameters

• 1. Voltage: 4-30V
• 2. Current: 0-6.5A
• 3. Timing: 0-99 hours
• 4. Function button
• 5. Direction of current
• 6. Capacity: 0-999999mAh
• 7. Power: 1-195W
• 8. Resistance: 0-999Ω
• 9. Energy: 0-999999mWh
• 10. Temperature: 0-80 °C
• 11. Type-C Port Female: Input / Output
• 12. Type-C Port Male: Output / Input

Functional Instructions

1. Click the button once to switch screens in a cyclical manner.
2. Double-click the button to rotate the displayed content.
3. Press and hold the button for 3 seconds to clear all capacity (mAh), amount of electricity (mWh), and timing data.
4. The product has a power-off memory function, retaining data after power loss.
5. The product supports bidirectional charging measurement.

Calibration Method

1. If powered by a USB A charger, press and hold the button, then connect the power supply (without needing to connect a load). The USB tester will automatically calibrate.
2. If powered by a PD charger, press and hold the button, then connect the power supply (requires a load to be connected). The USB tester will automatically calibrate.

Customer Service

For support, search for “YOJOCK” on Amazon to find the official store. For direct inquiries, contact YOJOCK via email at Serviceyojock@outlook.com. Responses are typically provided within 24 hours.