In this paper, simplified implementation method of the high-resolution phase shifting digital holography is presented. Rotation of the Plane-Parallel Plate (PPP) is used to precise managing of the phase shift. High phase shift resolution is achieved by imposing of two effects: phase delay in rotatable plate and shift of the angled wave fronts.  Phase Shifting Digital Holography (PSDH) is a convenient digital holographic method introduced in [1]. The main idea is to record four holograms with shifted phase by 0, π/2, π and 3π/2 of the reference beam. To calculate the object complex amplitude one must follow next equations.In Fig.1. experimental setup is illustrated. It is a modified Mach-Zehnder interferometer, but in our case the reference beam has a longer optical path than the object beam. For the phase shift initialization rotatable Motorized Translation Stage (MTS) was utilized. Two reasons of the interference pattern changes during rotation of the PPP occur: a light-path lengthening in the planeparallel plate and phase-shift that caused by both an inclination (angle Θ) between reference and object wavefronts and reference beam lateral offset. When Θ equal to zero there is no second phase shifting reason, but in real experiment conditions, it is hard to attain zero value for Θ, therefore this effect will always occur to a greater or lesser degree. The smaller will be angle between wavefronts the more precisely we can estimate phase shift between recorded holograms. In our case, plate width was 2mm and for 2π phase shift it has to be rotated to about 2 degree. Smallest MTS rotating angle is 0.00125 degree, therefore phase delay value per step smaller than π/800 can be realized.