This window contains the diagram of the system under test, with the controls to operate with it.
It looks like in the figure:

The controls used to display the signals and to modify them are:

	Display a signal in a numerical form.
		This control is used to display the value of a signal in a numerical form. There are the label of the signal (L=level), its value (7.9) and the measurement unit (cm).
	Display a signal as a bar graph.
		This control is used to display the value of a signal with a bar graph. The red section indicates the value of the signal that can range from its minimum (red section null) and its maximum (red section that cover all the bar).
	Control of an ON-OFF device.
		This control is used to control an ON-OFF device (valve, ..) included in the plant. The state of the control (ON or OFF) is changed with a click of the mouse over it. The OFF state is displayed with the green  color, the ON state with the red color.
	Control of an analog device.
		This control is used to change the value of the reference signal of an analog device (pump, heater, ..) in the plant. The signal can be changed with the slider or writing the value in the edit field. The indicated value correspond to the voltage that is applied to the controlled device.

The controls use the Acquisition Unit Mod. DL 1993A to interface with the DL 2314 Unit.
The DL 1993A Unit must be properly connected to the DL 2314 Unit..
On the System Diagram Window there are the indications to perform this connection. 
The connections are indicated in this way: