Can devices be simply, intuitively operated?
The lab defined a series of different applications scenarios for various types of devices, ran the applications, and analyzed the results. Example scenarios included rapid operational procedures under which users had to set only the most-important parameters and conduct procedures typical for the devices involved. These procedures included the partial-stroke test for actuators and determinations of the echo profiles of fill-level radars. A series of language enhancements under IEC 61804-3 allow much more flexibly configuring user interfaces than was formerly possible. The first step involves setting the values of parameters, such as starting position and step length. A graphical display clearly informs users what each parameter means. The second step involves measuring the reference time and determining the limits beyond which violations of the reference time will trigger notifications about maintenance status. Users may then conduct a partial-stroke test, save the plot, and compare it
