electronics equipment?
is a concern.
We have always made up our own vibration spec based on the application, both internal board level and mechanical packaging. Unless you are in a regulated industry that demands a certain spec, you'll be pretty safe just making up your own.
Doing a sine sweep over several hundred Hz to failure will reveal a lot. Doing a vibration test to an arbitrary spec and not breaking anything isn't actually proving much.
Then you might want some long term testing too, preferably swept at say half the short term breakage level.
Dave :)