goto accuracy of lx90

How can I determine if scope performs according to Meade specs? I believe accuracy is supposed to be 5 arc-min; how is this defined?

I read this somewhere...I am new to the game. maybe ask Dr. Clay at www.arksky.org...join yahoo meade lx90 user group. I've had a 90 since january and it's on the money, center FOv most of the time.