Any electromagnetic survey, inspection or simulation of an installation or facility has optimal significance when placed within the context of an accepted standard. To have meaning, any electromagnetic assessment at a given site should always be conducted with the same methods and procedures, test equipment, reference levels, and calibrations. Whether the system under test is a device, a system of devices, or an environment, any test results produced by the stated standardized procedure should be repeatable by another party using the same standardized procedure under the same conditions, and pass or fail decisions should always be referenced to a stated set of standardized criteria.