A vibration isolation platform utilizes a plurality of viscoelastic polymer blocks sandwiched between rigid plinths or boards and stacked on top of one another to provide vibration damping additively per layer of the sandwich. A portable programmable computer device that a user can readily install by plugging it into a diagnostic connector port of the vehicle. The amplitude pre-distortion circuitry distorts an amplitude component of a polar transmit signal using an amplitude compensation signal that essentially cancels the AM to AM distortion, and the phase pre-distortion circuitry distorts a phase component of the polar transmit signal using a phase compensation signal that essentially cancels the AM to PM distortion. A wheel actuator coupled to the rotatable wheel applies a computer-modulated force to the wheel about the wheel axis. Precision collimators eliminate light beyond a defined angle, as required in tiled or monolithic flat-panel LCDs with predetermined display specifications.