[R.Schofield, T.Mistry]

During todays' Tuesday maintenance, we powered the encoder and used a portable magnetomoter to investigate various locations. We tested a) On top of the NCAL, next to the motor, b) On top of the encoder box and c) on top of the NCAL Beckhoff controller box. These lcoation are the most likely places to expect stay magntic field coupling into DARM. A more detailed analysis will follow later. We took measurements between 1016 PDT and 1313PDT.