IF Module Software Documentation

A. D. Bolatto 
Radio Astronomy Lab, University of California at Berkeley

This is a functional description of the IF module, explaining what it
measures and controls, and how it controls it. The overall structure
of the software as well as the details of the algorithms used are
discussed in detail, so that programers and users not familiar with
the embedded XAC code understand its features and nuances. This
document also contains information useful for diagnosing
hardware/software problems with the module, including a detailed
explanation of the error codes and their possible causes.