While the unit is in CALIBRATION MODE, the calibrator may be "loaded" by the input element. After running the performance test (with METCAL), if the input element reads low values after the new CALIBRATION coefficients have been written, please compensate for the "loading effect."
To compensate for the loading effect, monitor the calibrator output with a DMM and adjust the calibrator/source to the proper level during CALIBRATION MODE. Also, cycle the power or reset the unit after adjustment as needed. Hold the display button down while powering the unit ON after the alignment.
The High-end WT1600 is designed for a wide range of applications, from energy-saving to large load applications. The WT1600 has a six element input capability to provide maximum flexibility, and Basic Power Accuracy of 0.1% with 1 MHz Bandwidth.
A Digital Power Analyzer is an instrument for research & development, design validation, and manufacturing test used to accurately measure electrical power characteristics.