Demonstration circuit 1890A contains the circuitry needed to program and verify the EEPROM of the LTC3883 and LTC3883-1. That is its only purpose. The DC1890A is shipped with a LTC3883 installed in the clamshell style programming socket. The EEPROM contains the factory default configuration. The LTpowerPlay™ .proj file that corresponds to the factory default can be found in the GUI.