PLAN POSITION INDICATOR (PPI)

PLAN POSITION INDICATOR (PPI) 10.7-inch-diameter CRT. Amplifying alphanumeric information is provided by up to two IP-1304 DDIs The plan position indicator (PPI), or display console, is the heart of the tactical display system. The PPI console allows its operator to view the inputs from the ship’s sensors (radar/sonar/IFF) and tactical symbology, to operate in the desired program mode, and to communicate by voice with other consoles, ship’s spaces, or remote ships and aircraft. The PPI display consoles you will encounter in the fleet come in several system and design variations. The PPI console shown in figure 3-15 is a typical PPI. Although we highlight the features of several different consoles in this section, some areas discussed may not be applicable to the consoles on your ship. The display console provides an operator (seated) with up to a 2,000-symbol tactical display on a mounted on top of the console. Each water-cooled console contains its own high-voltage and low-voltage power supplies. The high-voltage power supply (hvps) provides the voltages necessary to drive the 10.7-inch CRT. The low-voltage power supply (Ivps) provides for the logic power and lamp indicators. The console microprocessors and other logic are located in the card box beneath the console bullnose. Front Panel Controls and Indicators The console control panels are shown in figure 3-16. The display, CRT controls, and data entry devices are located for ease of use and maximum flexibility in the console operation. Figure 3-15.—A typical PPI display console. 3-12