Abstract: The invention relates to a method and apparatus as well as to a computer program for adjusting the operation of a hydraulically operated boom, the boom (1) comprising at least two mutually movably coupled boom parts (1a, 1b), which are coupled to move with respect to one another by means of a hydraulic actuator (5a-5b, 7a-7b), control means (13, 14) for controlling the hydraulic actuators, a detector (15) for detecting the position between the boom parts (1a, 1b), whereby for adjusting the operation of the boom (1) it is possible to configure a movement-specific adjustment parameter of the joint controller in the control means (13, 14) for each particular movement.

Abstract: A method and equipment for displaying holes to be drilled when drilling holes into rock with a rock-drilling rig having control equipment and a display belonging thereto and measuring means for defining the direction and position of a drill rod, by using a pre-designed drilling plan defined in a three-dimensional coordinate system, in which a starting point (19a to 21a) and end point (19b to 21b) is defined for each hole to be drilled. A base plane running through the end point (19b to 21b) of the hole and parallel to the projection plane is defined for each hole (19 to 21), and a projection of the intersection of a hole or its extension created when drilling in accordance with the current location of the drill rod and the defined base plane is displayed with a graphical location symbol on the projection plane.

Abstract: The invention relates to a method and apparatus as well as to a computer program for adjusting the operation of a hydraulically operated boom, the boom (1) comprising at least two mutually movably coupled boom parts (1a, 1b), which are coupled to move with respect to one another by means of a hydraulic actuator (5a-5b, 7a-7b), control means (13, 14) for controlling the hydraulic actuators, a detector (15) for detecting the position between the boom parts (1a, 1b), whereby for adjusting the operation of the boom (1) it is possible to configure a movement-specific adjustment parameter of the joint controller in the control means (13, 14) for each particular movement.