Which control on a fusion splicer brings the system back to the READY state?

The control that brings the fusion splicer back to the READY state is the RESET function. When operating a fusion splicer, the RESET control is crucial for reinitializing the device after it has completed a procedure or encountered an error. This allows the user to clear previous settings or error states and prepare the splicer for the next fusion splice operation.

By selecting RESET, the splicer undergoes a process that returns it to its default state, where it is ready to receive new input for splicing. This ensures that the splicer is functioning correctly and that all parameters are set appropriately for the next task. In contrast, the other controls like POWER, START, and COMPLETION serve different specific functions that do not directly bring the device back to the READY state. POWER controls the overall power supply, START initiates the splicing process, and COMPLETION indicates that a splice operation has been finished.