The 3 Channel Digital Servo Tester is an essential tool for RC hobbyists, offering a precise and efficient way to test and calibrate servos and electronic speed controllers (ESCs). This compact device allows you to easily detect and adjust common issues such as servo jitter, dummy bits, and median positions.

With the ability to connect up to three servos or ESCs simultaneously, this tester provides high stability and accuracy, thanks to its MCU control. It features three distinct operating modes—Manual, Neutral, and Automatic—making it versatile for various testing needs.

This tester is particularly useful for controlling electronic governors (both brushed and brushless), eliminating the need for a remote control and receiver during testing. By simply turning the adjustment knob, you can manually control the speed and performance of your motor, acting as a "manual receiver."

Note: This tester is not suitable for servos weighing more than 55 grams.

Key Features and Specifications

• Compact Design: Lightweight (8g) and small in size (46 x 32 x 17mm) for easy portability.
• Three Adjustment Modes:
  • Manual Mode (Man): Use the adjustment knob to precisely control the servo position.
  • Neutral Mode (Neutral): Fixes the servo at the central angle (median position).
  • Automatic Mode (Auto): Automatically cycles the servo through its full range of motion.
• High Accuracy and Stability: Controlled by an MCU for reliable results.
• Versatile Input: Requires DC 4.2V-6.0V input (ensure sufficient current and thick wires for proper function).
• Output Signal: 1.5ms ± 0.5ms.
• Connectors: Three sets of output pins (Positive, Negative, Signal) for simultaneous connection of up to 3 servos or ESCs.

How to Use

1. Connect your power source (DC 4.8V-6V) to the "IN" pins, ensuring correct polarity (Positive and Negative).
2. Connect the servo(s) or ESC(s) to the "OUT" pins.
3. Use the "Select" button to switch between Manual, Neutral, and Automatic modes. The indicator lights (Man, Neutral, Auto) will show the active mode.
4. In Manual mode, turn the adjustment knob to test the steering.