(picture prototype, doc not ready)
This module is designed as a ultimate low noise voltage/current source. It is difficult to use and has several limitations but shows only <1E-8 fluctuations (noise) on its output. (You will not use this module unless you really need it.)
Internal batteries with x1/x0.01 resistive decade dividers provide voltages which can be connected to a cryogenic resistor forming a current source. Setting values is done on the frontpanel, it can only be tuned +/-1% by a remote DAC.