This section describes the various standard instrument drivers as required by CalEasy calibration programs. Each instrument's standard driver type has its own software interface. The software interface is comprised of a DLL with exported functions as defined in this chapter. CalEasy is provided with several standard instrument types including DMM, MATRIX, PS, SCOPE, REF etc. Instruments drivers are installed in the CalEasy\Standards folder. Several examples are also installed in the Standard folders showing how to create such instruments. The provided examples are written in ATEasy; however similar driver/ DLLs can be written with any programming language that can create a 32-bit DLL.