A multilayer circuit board includes a base layer, a conductive layer and a soldermask. A mobility component receives actual subscriber and femto access point attachment signaling and extracts visitation data that facilitates generation of real-time or historical visitation reports. In one embodiment, a refund process is made progressively harder or burdensome as users are categorized in worsening refund abuse categories. A gantry for an imaging system utilizing a transmission source is also disclosed. Light is transmitted to and from the material by optical fibers which are coupled to the material on either side thereof. The calibration system includes a retainer, a tripping member responsive to an electric current, an actuator retained by the retainer, a spring adjuster adjustably engaged with the actuator and the tripping member, and a bias spring disposed for biasing the actuator in a first direction.