Check environmental conditions.Measurement equipment LMG 500 :- choose (check) required software version of IEC Standard- allow the measurement equipment to warm up for 1h. Measurement software “UniHarm” :- check the calibration data (Menu/ Program -> calibration data) - check the measurement equipment LMG 500• choose current channel• choose evaluation (periods) according to the used line frequency- choose harmonic evaluation according the EUT• warm-up time• choose type of evaluation ( class C )• choose evaluation timeStart measurement and save data and evaluation results.A document is created for each measurement with the test results and verification of the power source .4 Reporting the resultsThe results are reported using the test report template provided by VDE.