Electron beam equipment

A mounting arrangement for mounting scanning coil/yoke structures on the neck of an electron beam tube comprising position adjustment means for producing lateral displacement of the scanning coil/yoke structure on the neck of the electron beam tube along two mutually perpendicular axes as well as axial displacement of the structure along the tube neck and tilt adjusting means for producing tilt of the coil with respect to the axis of the tube neck and constructed and arranged to afford simultaneous lateral displacement and tilt of the coil structure relative to the tube neck axis to afford optimum convergence control taking into account mechanical limitations imposed by the tube neck on which the scanning coil is mounted, wherein said tilt adjustment means comprises a tilt ring structure having internal peripheral cam tracks co-operable with surfaces on the scanning coil/yoke structure to effect tilting of the coil in response to relative rotation between the tilt ring structure and the scanning coil/yoke structure.