Copyright (C) 2015 Elphel, Inc. License: CERN OHL v.1.1 or GNU FDL v.1.3 This documentation describes Open Hardware and is licensed under the CERN OHL v. 1.1. You may redistribute and modify this documentation under the terms of the CERN OHL v.1.1. (http://ohwr.org/cernohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v.1.1 for applicable conditions OR Permission is granted to copy, distribute and/or modify the documents under the terms of the GNU Free Documentation License, Version 1.3 (http://www.gnu.org/copyleft/fdl.html) or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.