Provided are a method, device and system in which, in one embodiment, a socket for an integrated circuit package includes a standoff adapted to engage and support the package in a first position in which the package contact terminals are disengaged from socket contact terminals. A digital input filter implement filters with considerable less logic by simulating the action of a capacitor being driven by a constant current source whose output voltage is sensed by a comparator with a large amount of hysterisis. In response to the \u201clower limit cooling instruction ,\u201d the second device controller increases the amount of the refrigerant supplied to the second showcase. includes placing a reticle in the path of a return beam from the object, and placing a detector at a diffraction pattern self-imaging plane relative to the reticle.