A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. In the first stage, the RF signal is mixed with both components of the local oscillator signal in a sub-harmonic mixer to produce an intermediate frequency output signal having a frequency component at twice the local oscillator frequency minus the RF frequency, i. The icons are linked with the ASP registration DB. A restricting mechanism comprising a first stopper member protruding from an inner wall of the cylinder head a distance such that a terminal edge of the first stopper member is at a predetermined distance from a free end of the discharge valve for restricting movement of the discharge valve. The exhaust valve is adapted to visibly lift outward and up from the outside mask surface to imitate a flapping tongue. The SAS etch is provided after the first source implant driving step.