diymore USB C Tester User Manual

1. はじめに

The diymore USB C Tester is a professional digital measurement device designed for comprehensive analysis of USB-C and Power Delivery (PD) chargers and cables. It provides high-precision measurements of voltage, current, power, and capacity, and can analyze fast charging protocols. Its compact and portable design makes it an essential tool for electricians, technicians, and anyone needing to verify the performance of USB-C power sources and cables.

2. 安全情報

Please read and understand all safety instructions before using the device. Failure to follow these instructions may result in electric shock, fire, or damage to the device or connected equipment.

デバイスを湿気や極端な温度にさらさないでください。
デバイスを分解または変更しようとしないでください。
Use the device only within its specified voltage and current ranges (DC 4-28V, 0-10A). Exceeding these limits may cause damage.
Ensure proper connection to avoid short circuits.
お子様の手の届かない場所に保管してください。

3. パッケージ内容

パッケージにすべてのアイテムが含まれていることを確認します。

diymore USB C Tester (Power Meter)
収納ボックス

4.製品オーバーview

The diymore USB C Tester features a compact design with a 0.96-inch IPS LCD color screen for clear display of measurement data. It is housed in a durable CNC metal casing.

diymore USB C Tester with CNC Metal Housing and dimensions

図4.1: diymore USB C Tester with its protective CNC metal housing and compact dimensions (31.8 x 16.1 x 8.1 mm).

The device is equipped with a USB-C input and output, allowing it to be inserted inline between a power source and a load. It features two control buttons (K- and K+) for navigating menus and adjusting settings.

5. セットアップ

The diymore USB C Tester is designed for plug-and-play operation. No external power supply is required for the tester itself.

Connect the USB-C male connector of the tester to the USB-C output port of your power source (e.g., charger, power bank).
Connect your USB-C device (e.g., smartphone, tablet, laptop) to the USB-C female port of the tester using a compatible USB-C cable.
The tester's display will automatically power on and begin showing real-time measurement data.

diymore USB C Tester connected between a charger and a laptop

図5.1: Example setup showing the USB C Tester connected in-line with a PD3.1 charger and a laptop.

注記：

1. The tester supports peak voltage up to 36V and peak current up to 10A.
2. When only the PD charging head is connected without a load, the device may not start. It must be connected to a useful electrical equipment in order to work.

6. 操作手順

The diymore USB C Tester features multiple display interfaces and functions, navigable via the K- and K+ buttons.

6.1. ボタンの機能

Table of button functions for diymore USB C Tester

図6.1: Quick explanation of button functions for navigating display pages and settings.

Use the K- and K+ buttons to switch between display pages, adjust settings, and confirm selections. A short press typically switches screens or values, while a long press activates specific functions.

6.2. Display Pages

The tester offers four main display interfaces:

P1: Large Display (Current/Voltage)

This page provides a clear, large character display of real-time voltage (U), current (I), and power (P). It also indicates the current direction.

Long press K-: Switch data refresh speed (2nd gear).
Long press K+: Rotate the screen display direction.
Short press KEY- KEY+ button: Switch between screens forward/backwards.

図6.2: P1 interface displaying large voltage、電流、および電力の値。

P2: Fast Charging Protocol Display & Detection

This page displays voltage (V), current (A), power (W), recording capacity (Wh), D+/D- communication line voltage, and detects fast charging protocols (PD/QC/PPS).

Long press K-: Switch Ah, Wh capacity display unit.
Long press K+: Switch capacity recording starting current threshold.
注記： Only records when current ≥ threshold; less than this current will automatically stop capacity accumulation.

P2 Fast Charging Protocol Display showing various charging parameters

図6.3: P2 interface for fast charging protocol detection and detailed charging parameters.

P3: Capacity Statistics Screen

This screen provides statistics on charging energy (Wh), recording time (R), maximum recorded values (MAX), and average values (AVG) calculated since power-on.

Long press K-: Clear capacity records.
Long press K+: Switch between MAX and AVG display.

P3 Capacity Statistics Screen showing Wh, recording time, max and avg values

図6.4: P3 interface for monitoring charging capacity statistics.

P4: Data & Cable Test Screen

This page is used for ripple testing and cable resistance measurement. It displays ripple frequency, measurement gear, ripple value, and real-time voltage、電流、および電力の値。

Long press K-: Enter Cable Submenu.
Long press K+: Switch SamplingFrequency。
注記： Measuring ripple requires a professional commercial load.

P4 Data & Cable Test Screen showing ripple measurement

図6.5: P4 interface for data and cable testing, including ripple measurement.

7. メンテナンス

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

クリーニング： デバイスの清掃には、柔らかく乾いた布を使用してください。研磨剤入りの洗剤や溶剤は使用しないでください。
ストレージ： Store the tester in its provided storage box when not in use to protect it from dust and physical damage. Avoid storing in areas with high humidity or extreme temperatures.
取り扱い： デバイスは丁寧に取り扱ってください。落としたり、強い衝撃を与えたりしないでください。

8。トラブルシューティング

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

問題	考えられる原因	解決
ディスプレイがオンにならない。	No power source or no load connected.	Ensure the tester is connected between a working power source and a device drawing power. The tester requires a load to activate.
不正確な測定値。	Faulty cable, unstable power source, or device malfunction.	Try using a different USB-C cable. Test with a known good power source and load. If issues persist, the device may require service.
ボタンが反応しません。	一時的なソフトウェアの不具合。	テスターを取り外して再度接続し、リセットします。
Cannot detect fast charging protocol.	Connected device/charger does not support fast charging, or cable is not compatible.	Ensure both the charger and the device support the desired fast charging protocol (e.g., PD, QC, PPS) and that the cable is rated for it.

9. 仕様

Detailed technical specifications for the diymore USB C Tester:

モデル： USBテスター
巻tage 測定範囲: DC 4-28V (supports peak up to 36V)
電流測定範囲: 0-10A (supports peak up to 10A)
電力測定範囲: Up to 360W (peak)
画面： 0.96-inch IPS LCD Color Screen
ADC Chip: 16-bit Independent ADC Chip (for accurate data line resistance measurement)
急速充電プロトコルのサポート: PD/QC/PPS detection
寸法: 31.8 x 16.1 x 8.1 mm（約7 x 1 x 2 cm）
重さ： 20グラム
ハウジング： CNC Metal
メーカー部品番号: KBAI0051-AAC

diymore USB C Tester highlighting 16-bit ADC chip and measurement ranges

図9.1: Key technical features including the 16-bit ADC chip and measurement capabilities.

10. 保証とサポート

For warranty information and technical support, please refer to the retailer's return policy or contact diymore directly through their official channels. Specific warranty terms may vary by region and retailer.

返品規則： Typically 30 days for refund/replacement (as per Amazon buybox winner info).
メーカー: DIYモア
売り手： diymore® (fulfilled by Amazon)