Hello All, I just got done talking with Patrick about the DCU information in the root files. The information is found in the following directory within the root file: /Record#/Module#/Environment/ He tells me that there should be 2 or 3 DCU temp readings: TVtemphybdcu1,TVtemphybdcu2,TVtemphybdcu3 2 DCU readings off of the 1.25 Volt line, voltage and current: TVvhyb125Dcu , Vhyb125DCU_I 2 DCU readings off of the 2.5 Volt line, voltage and current: TVvhyb25Dcu , Vhyb250DCU_I 1 DCU bias leakage current: TVileakdcu It appears that all these TVectors are filled in version LtStruct_23. Regards, Ryan