Yes,you can find THD measurement in harmonic mode,range from 0% to 100%.

Usually one year,this depends on time interval

Only USB disks with capacity less than 32GB and FAT32 format can be recognized by SA2100. Please format your USB disk and plug it in SA2100 again, check whether “To USB” inis highlighted, if yes, select the files you want to copy and press F2 to

In Logger function, there is a “ParamSelect” key as Fig.1 shown:

Fig.1

If users need to log harmonics, “Uharm” and “Iharm” should be selected as Fig.2 shown:

Fig.2