3.2.3 SYNTHETIC RANDOM VIBRATION
deterrent to universal acceptance of random vibration is the impact this type
of test would have on program costs since a random vibration test facility is
extremely expensive. A concept for economically generating random vibration
was evolved which capitalizes on the fact that most major electronic equipment
manufacturers maintain basic electrodynamic sinusoidal vibration test
facilities. This technique, which was structured to utilize these existing
facilities, employs a cassette tape deck, in lieu of expensive random
programming devices, to excite the basic shaker system.
procedures necessary for generating random vibration using an electrodynamic
vibration system and a cassette tape deck as a signal source are included
herein as an Appendix.