With the built-in independent high-accuracy voltage and current measurement system, PRD products' performance is comparable to that of 6½ digit multimeters saving high-voltage high-accuracy DC voltmeters, high-accuracy ammeters, power meters, and impedance meters. The equipment data can serve as the basis for product performance judgment. In the case of the photovoltaic inverter test, its high-accuracy measurement system enables the tracking efficiency of the test object to be measured in a more accurate manner.

The SAS solar cell simulator function allows for accurate simulation of the output I-V characteristic curve of the solar cell panel; with a built-in SAS model as specified in EN50530, Sandia, CGC/GF004, CGC/GF035 and other standards, the product can be used to test static and dynamic MPPT of photovoltaic inverters. The built-in SAS function of the equipment only supports simple curve operation. The standard-related PPT efficiency requires a combination of the "programmable power virtual terminal" software, so as to achieve the complete test function of the photovoltaic industry. Its high-accuracy measurement and control system can test the maximum tracking efficiency of solar inverters more accurately. Parameters such as Voc and Is can be set to simulate I-V curves, and various solar panel types, shadow occlusion and customized curve editing are supported. The built-in curves of up to 4096 points enable an accurate simulation of I-V curves. The functions of log and report generation allow for the recording of the curve changing.