This standard is the second part of a set of five standards covering the experimental determination of mechanical mobility of structures by a variety of methods appropriate for different test situations. Part I of the set (ANSI S2.31-1979) covers basic concepts and definitions as well as instruments used in mobility measurements. The material in Part I is common to most mobility measurement tasks. The present Part II of the set describes measurements in situations where single-point translational excitation with an attached vibration exciter is appropriate.