Ortec: https://www.ortec-online.com/products/electronics/power-supplies-and-nuclear-instrument-module-nim-bins/556-and-556h
CAEN: http://www.caen.it/csite/CaenProd.jsp?parent=67&idmod=931
HV Power Supply
Module / Model Number Serial Number Location CAEN 8CH R1470ETD 0037 In use Ortec 556 3415 In use