A system and method for testing audio components of an optical disc drive. Camera harness is comprised of an adjustable strap system for attaching harness to operator wrist or arm and a coupling system for attaching, one at a time, cameras of various shapes and sizes to aforementioned harness in a either a manner that allows camera to be moved pivotably while attached to harness and operator or in a manner that secures camera in a fixed, non-pivoting position. The accessory is retrievable from the storage space and useable exteriorly of the mirror assembly. The contact rate value may represent an allowable quantity of contact within a time interval.