JK Spring 2014

My first project this semester is going to be programming the control boards that regulate the bias voltages for the SiPMs as per the procedures outlined by Alex here.

After some initial issues with the boards, Dr. Jones and Alex discovered that there was a problem with the Vref of the control boards. With the addition of an extra resistor the problem has been fixed and the first and eleventh boards have been programmed. I started on the second board but there was an issue with the first pin that led us to believe that there is a solder bridge underneath the DAC that is sapping voltage from the pin. This is not an issue that we can fix and therefore the board is bad.