An embodiment is a method and apparatus to provide a network-attached media plug-in. Each measurement involves indicating with cursors and line segments regions of the eye diagram that are of interest, and a parameter or parameters associated with each measurement tool in use is reported in a separate area of the display. The spatial-encoding elements include paramagnetic and diamagnetic spatial-encoding elements. The processor may be operable to determine an overall alertness associated with the sleep parameter and wherein the processor is operable to output a determined sleep condition based on the overall alertness. A high-permeability magnetic body made of a high-permeability magnetic material is provided in the feed circuit board and a portion of the inductance elements is provided in the high-permeability magnetic body.