Hi All,
forgive me if this is the wrong forum but i assume someone here from a test and measurement background will be able to help.
I am trying to measure leakage current using a source meter and electrometer. The problem i have is that the termination method of my instruments is BNC. The DUT i am measuring is inside a shielded diecast box. In order to make my measurement i am using the chassis and the outer core of the coax cable as the reutn path. However i do not know if this will increase noise within the measurement. I am measuring currents in the Nanoamp region.
Also from a safety point of view i am using high voltage and having the return path going through the diecast box does not sit well with me.
Does anyone have any opinions on this or can advise on a better solution?
Thank You
Andy
Here is a diagram of what i am doing
https://forums.tm.agilent.com/community/download/file.php?id=8518&mode=view: https://forums.tm.agilent.com/community/download/file.php?id=8518&mode=view