intended to test a new system under operating conditions and to familiarize the operators with the system; a shakedown cruise'
shakedown (adj.)
initial adjustments to improve the functioning or the efficiency and to bring to a more satisfactory state; the new industry's economic shakedown'
a very thorough search of a person or a place; a shakedown by the police uncovered the drugs'
extortion of money (as by blackmail)