A system for adjusting power employed by a medical device incorporating light emitting devices and being used for measuring patient medical parameters, includes a plurality of light emitting devices. A novel pressure pulse generator or \u201cpulser\u201d is coupled to a sensor package, a controller and a battery power source all of which reside inside a short section of drill pipe close to the bit at the bottom of the bore hole being drilled. The oxide coating layer is constituted of an oxide or a composite oxide containing the nonmagnetic metal which is one of the constituents of the magnetic metal particle. The protection device further includes a manifold at least partially defined by the overlying panels. The method includes registering items with strip with items being heat sealed to strip or taped to strip.