Is there any way to ensure the operating accuracy of the dual-axis PTZ-PTZ PTZ-precision PTZ

The self-test of the smart PTZ is programmed when it is powered on or restarted after a power outage. The self-test action process and time are relatively fixed. After the smart PTZ is powered on, it first returns to the position of the optocoupler before starting the self-test program. The optocoupler point of the smart PTZ is fixed, but its position before power failure is uncertain. Therefore, in order to minimize the time of the entire self-checking process of the PTZ, it is necessary to find a way to make the PTZ stay at the position of the horizontal optocoupler point and the vertical negative starting point of the optocoupler point before powering off.