KoCoS Messtechnik AG of Germany has introduced a new generation of stationary and portable meter tests systems. These METES family systems allow users to test power meters across a broad frequency spectrum using any signal shape. Recorded power system situations such as disturbances can also be replayed for test purposes.

The METES models are based on the latest 32/128 bit DSP technology. Input circuits using linear optocouplers (LOC) allow measurements across a wide band of frequencies. The current and voltage amplifiers, designed in accordance with the ASCA principle, are electronically protected against overload and short circuits. All test signals are synthetically generated and are supplied to the device under test via D/A converters and power amplifiers. These models have been designed for operation in harsh industrial conditions, and are delivered with basic software which covers all major test functions, including automatic evaluation.