====== Voltage controll ======

We have two power supply units, both controlled by a LabVIEW script via the server. We use a Low Voltage Power Supply Unit (LVPSU), the HMP 4040 by Rohde & Schwarz. The LVPSU powers the LTA with 12 V and 1-2 A and supplies the base power for the CCD. For a High Voltage Power Supply Unit (HVPSU), we use the Keithley 2470 SourceMeter. It is used to deplete the CCD of any free charge, using around 50-70 V. It has very high precision, capable of measuring currents down to femtoamperes. This precision is needed to test for defects in CCDs.

  * [[https://www.manualslib.com/manual/2584876/Rohde-And-Schwarz-Hmp-Series.html#manual|Rhode and Schwarz HMP4040 manual]]
  * [[https://www.manualslib.com/manual/1602004/Keithley-2470.html?page=1#manual|Kethley 2470 SourceMeter manual]]