Definition: Translate the given Spanish text to English

Positive Example 1 -
Input: A method for converting a series of m-bit information words to a modulated signal is described.
Output: Se describe un método para convertir una serie de palabras de informacion de bits m a una señal modulada.

Positive Example 2 -
Input: A last plastic cover is applied as a final protection.
Output: La presente invencion comprende un nuevo mezclador termocinetico.

Negative Example 1 -
Input: Luminescent optical sensor.
Output: SENSOR OPTICO LUMINISCENTE.

Negative Example 2 -
Input: The urinal is similar to a common toilet.
Output: El común es similar a un inodoro orinal.

Now complete the following example -
Input: Hydraulic hammer device for excavators, comprising at least a spike (1) and an energy accumulator (4), in which the energy accumulator (4) is located on the longitudinal shaft of the spike (1) and securely connected to said spike (1), and in which said shaft is on that which attacks the ground between the retracted and deployed positions of the spike (1), and which is characterized in that it comprises a cylinder (2) or two cylinders (2, 3) securely connected to the spike (1) inside same.
Output: Dispositivo percutor hidráulico para máquinas excavadoras que comprende, al menos, un rejón (1) y un acumulador de energía (4); donde el acumulador de energía (4) está situado en el eje longitudinal del rejón (1) y solidariamente unido a dicho rejón (1); y donde dicho eje es sobre el que efectúa el ataque al terreno entre las posiciones replegadas y desplegada del rejón (1) y que se caracteriza porque comprende un cilindro (2) o dos cilindros (2,3) solidariamente unidos al rejón (1) en el interior del mismo.