The DT71 Mini Digital Tweezers is a multi-function measure tool designed for electronic component analysis and signal generation. It features a unique ternary structure, allowing it to be split into a controller, test arms, and replaceable tweezer tips. The device utilizes thickened gold-plated tweezer tips, which can be replaced according to the application scenario.

Function Description:

The DT71 is a portable LCR tester capable of automatically identifying the type of electronic components and actively selecting the appropriate range for measurement. It can measure various devices such as resistors, capacitors, inductors, voltage, frequency, and diodes. Additionally, it incorporates a built-in micro signal generator that can output a variety of signals, providing a perfect solution for debugging and maintenance of complex electronic systems and the classification and detection of discrete chip components.

Important Technical Specifications:

Measurement Types: Resistance, inductance, capacitance, voltage, frequency, diode.
Power Interface: 3.5mm audio.
Size: Controller: 47mm, Test arms: 106mm.
Weight: 22g.
Working Temperature: 10~50°C.
Working Humidity: 10~90%RH.
Charging Time: 2 hours.
Operation Time: 10 hours (in continuous use).
Measurement Ranges and Accuracy:
- Resistance (R):
  - Range: 0.1Ω~1000Ω, 1KΩ~2.0MΩ
  - Resolution: 0.1Ω, 1KΩ
  - Accuracy: 0.5%+2, 0.5%+2
- Diode (D):
  - Range: 0.1V~3V
  - Resolution: 0.1V
  - Accuracy: 1%
- Capacitance (C):
  - Range: 0.1pF~1000pF, 0.001uF~400uF
  - Resolution: 0.1pF, 0.001uF
  - Accuracy: 2%+3, 2%+3
- Inductance (L):
  - Range: 1uH~500uH, 1mH~50mH
  - Resolution: 1uH, 1mH
  - Accuracy: 5%+3, 5%+3
- Frequency (F):
  - Range: 10Hz~1000Hz, 1KHz~20.000KHz
  - Resolution: 10Hz, 1KHz
  - Accuracy: 0.1%+3, 0.1%+3
- Voltage (V):
  - Range: 1mV~100mV, 0.1V~40V
  - Resolution: 1mV, 0.1V
  - Accuracy: 2%+5, 1%+3
Signal Output Types: Sine Wave (10KHz), Noise Wave (100KHz), User-defined Wave (2KHz), Pulse Wave (10KHz).
Maximum Absolute Input Voltage: -5V ~ 50V.
Input Resistance: 1MΩ.

Usage Features:

Installation: Fully insert the 3.5mm audio plug of the DT71 controller into the socket of the test arms. The screen will display the bootup icon and firmware version, then enter the user interface.
Operation: The DT71 has no physical buttons, only a hidden touch button on the top of the controller.
- Long press: Switches submenu of measure/automatic identification/signal generator/calibration mode.
- Single tap: Switches menu options.
Display: Features an OLED screen. The controller can be rotated 360°, providing different viewing angles.
Smart Recognition: Automatically recognizes left and right hand mode.
Measurement Modes:
- Manual Measure Mode: Allows selection of specific measurement types (Resistance, Inductance, Frequency, Capacitance, Diode, Voltage).
  - For Resistance, Inductance, Capacitance, and Diode, clamp the tweezer tips in the two poles of the component.
  - For Frequency, the positive electrode (red) connects to the signal positive, and the negative electrode (blue) to the signal ground.
  - For Voltage, the positive electrode (red) connects to the high potential, and the negative electrode (blue) to the low potential. If the positive and negative tips are reversed, the screen will display "Negativ".
- Automatic Identification Mode: Long press the touch button to switch to automatic identification mode. The DT71 can automatically identify inductor, capacitor, resistor, or diode, displaying primary and secondary parameters.
Signal Output: Long press the touch button to switch to signal generator mode (Signal Gen), then tap to switch between sine wave/noise wave/user-defined wave/pulse wave. User-defined waveforms can be configured via a DFU configuration file.
Charging: Insert the 3.5mm male plug of the DT71's dedicated cable into the test arms, and connect a DC5V power source (USB-A to C cable) to charge it. A charging indicator will be on when charging and off when fully charged. Only DC5V input is allowed.
Automatic Sleep and Wake Up: The DT71 has an automatic sleep function, entering sleep mode after 60 seconds of inactivity (factory setting). To wake it up, close (short-circuit) the tweezer tips to enter the user interface.
Config File: Insert the DT71 controller into the Data Cable's 3.5mm female socket, connect the Data Cable to your PC via USB Type-C cable. A removable hard disk will appear on your PC. Open the CAL.INI configuration file in the removable disk and set parameters such as sleep time, display direction, OLED brightness, and signal frequency options.
- SLEEP_TIME: 30~999 seconds.
- DISPLAY_DIRECTION: Left/Right hand mode, Automatic recognition.
- OLED_BRIGHTNESS: 0~10.
- SINE_FREQ_OPT: 0:10KHz, 1:5KHz, 2:2KHz, 3:1KHz, 4:500Hz, 5:200Hz.
- NOISE_FREQ_OPT: Currently only supports 100KHz.
- USER_FREQ_OPT: 0:10KHz, 1:5KHz, 2:2KHz, 3:1KHz, 4:500Hz, 5:200Hz.
- PULSE_FREQ_OPT: 0:100KHz, 1:50KHz, 2:20KHz, 3:10KHz, 4:5KHz, 5:2KHz, 6:1KHz, 7:500Hz, 8:200Hz.
- User-Defined Wave Setting: USER_WAVEFORM parameter allows defining a 0-3V signal waveform using hexadecimal numbers (0x000~0xFFF). The output waveform loads the first 100 points of valid data; red font modification is invalid.
- Restore Factory Setting: Delete all data in the CAL.INI config file and enter "load default" to restore factory settings.

Maintenance Features:

Safety Statements:
- Use only the power cable dedicated for this product.
- Ensure proper connection of DT71's tips and power on/measure the circuit.
- Unplug the controller when DT71 is not in use.
- Observe all terminal ratings and marking instructions to avoid damage.
- Do not touch exposed connectors and components when power is turned on.
- Static electricity can cause damage; discharge static electricity before connecting.
- Keep DT71 surface clean and dry; do not operate in humid, flammable, and explosive environments.
- Do not disassemble the DT71 controller or test arms.
Calibration:
- Zero Calibration: Long press the touch button to switch to calibration mode. Keep the tweezer tips closed and short circuit until the screen prompts the next step (Calibration #0 Close Tips Pls!). Then open the tweezer tips until the screen prompts the next step (Calibration #1 Open Tips Pls!). After successful open calibration, the screen will prompt whether to save the calibration data; tap the touch button to confirm and save. If mistakenly entered calibration mode, long press the touch button to exit.
- Accurate Calibration: For accurate calibration, visit www.miniware.com.cn and download the DT71 calibration accessories, then operate according to the instructions.
Firmware Upgrade:
1. Visit www.miniware.com.cn to download the latest DT71 firmware to your PC.
2. Insert the DT71 controller into the Data Cable's 3.5mm female socket (no need to connect test arms), connect the Data Cable to your PC via USB Type-C cable; a removable hard disk will appear on your PC, entering DFU setting mode.
3. Copy the .hex firmware to the root directory of that disk. After the extension of the firmware changes from ".hex" to ".rdy", restart DT71, and the firmware is upgraded.
Standard Service: One year of free warranty is provided, if the damage was not caused by false manipulation by the user. Please contact your seller for warranty details. Tweezer tips are consumables; once used, no replacement will be provided.
Legal Statements:
- Disposal: Do not dispose of this product with domestic waste. It complies with the WEEE Directive, indicating that this electronic product must not be disposed of in household waste. Handling and recycling of the product shall be manipulated according to laws and regulations in your area.
- FCC Standard: This device fulfills part 15 of the FCC regulations. Device must fulfill below 2 conditions: (1) Device must not generate interference; (2) Device must be able to resist any interferences on it, including interferences that could cause dangerous manipulation.
- CE Standard: This product with CE logo on it fulfills related Euro Union laws and regulations.

MINIWARE DT71 - Page 2

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