1. The M100 can test all popular incremental encoder configurations.

2. The new design with incremental encoder and Programmable Logical Controller works out a solution.

3. Especially to low-speed circumstance, conventional incremental encoder is difficult to satisfy the requirement of measurement resolution.

4. Using an optical incremental encoder and hardware interface, the position of the motor rotor between the two teeth of the motor stator is measured.

5. Incremental encoder can output an integer number for AB believe frequency.

6. The edge transition of pulses from incremental encoder can be detected with double frequency to improve measurement precision, and to avoid measurement errors and accumulative errors.

7. In order to enhance the precision of the distance, quadruple frequency circuit of incremental encoder is used.

8. If the hardware circuit is designed by CPLD, the data acquisition of high speed and high precision incremental encoder could be obtained.

9. The characteristic of this system is the employment of an incremental encoder as the speed sensor.