Accelerometer. (1) Transverse sensitivity of less than or equal to 5 percent. (2) An amplitude linearity within 10 percent from 5 percent to 100 percent of the peak acceleration amplitude required for testing. (3) For Procedures I, II, III, IV, V, VI, and VIII, a flat frequency response within ±5 percent across the frequency range 2 Hz - 2000 kHz. (4) For cases in which response below 2 Hz is desired, piezoresistive accelerometer measurement is required with a flat frequency response within ±5 percent across the measurement specification bandwidth. (5) The measurement device and its mounting will be compatible with the requirements and guidelines provided in paragraph 6.1