Synchronization module applied to frequency interferometer

The utility model relates to a synchronization module applied to a frequency type interferometer, which comprises a shell, a PCB (printed circuit board) is arranged in the shell, the shell is matched with a cover plate and is locked by matching a bolt with a mounting hole, the shell is provided with a cable head, the cable head comprises a cable mounting block fixed outside the shell through a bolt, and the cable mounting block is connected with the PCB. A cable mounting column penetrating through a side plate of the shell is arranged in the center of the cable mounting block, an electric connecting column penetrating through the cable mounting column is arranged in the center of the cable mounting column, the inner end of the electric connecting column is electrically communicated with the PCB through a wire, the outer end of the electric connecting column is electrically communicated with an external cable, and a fixed cable head is arranged on the shell. The part, located in the shell, of the cable head is