General purpose test equipment includes tools which measure basic parameters like watts, voltage, frequency and other diagnostic data. Calibrators, such as electrical calibrators, HART field communicators and temperature calibrators, provide test solutions for increasing the efficiency of electrical devices. Component testing devices help with the design and characterization of a project, ensuring each element contributes data correctly to the whole. The term ‘data acquisition’ refers to data loggers and signal conditioners. These test instruments gather information on signals being sent out.