So far we have looked at components of the Sample Model, the objects, but we have not taken a "system level" view of the solution to the problem. It may be useful to re-visit Section 2.1 to review the requirements of our problem at this stage. The following diagram represents the configuration of the Sample Model:
The items shaded in gray are the signal objects of the model, and items with dotted boxes are external controls. Signal paths are shown with the connecting lines.
It can be seen that the "object oriented" approach used by Model Builder results in a model that maps almost directly to the components as in the real world.
The intention of the sample model is that it may be exercised without the need to actually connect and configure a host system, and the use of the "Initial value" pre-load feature within a number of the controls should simplify the controls requiring set-up values. In fact the model was created such that both operator radios will be capable of receiving the ATIS radio transmission, with minimal control values being set using the test function. In fact only the "Op1_Power" and "Op2_Power" controls need to be set to "On" to receive the transmission. Use the "Test mode" feature and set the "Input" to "On". With suitable headsets connected to the system the transmitted message should be heard.
The user is encouraged to experiment further with this model. This a fairly simple model, and it should be possible to for even a new user to exercise the radios (change the frequencies and transmit from both operator positions), enable the intercom (set the Intercom select control and the PTT to "On"), and enable the Stall Warning tone to both operators.