Monitoring the state, status, and controlling electronic set-ups of the IF/LO system is done via Control Library for Engineers and Operators (CLEO) applications. These applications are run from the operator's control room workstation. They can also be accessed through other workstations on site under specified conditions. In addition to its primary monitoring function, this software package can also be used to manually control observing functions. Specific information concerning CLEO applications is included in an on-line CLEO Manual.
Observing with the GBT using the IF/LO system can be done interactively through graphical control screens or by running pre-planned observing tables. This interface uses a "windows" type environment. Setting up the IF/LO may be accomplished in both automated and manual modes depending on the observers plans. Specifics concerning this software, and how it can be used is discussed in the software users manual.