ADJUSTMENT OF PPI, IFF, AND PRECISION DISPLAY,
AND PPI DELAY CONTROL
Describe the function and use of components used in the adjustment
and operation of the precision display. Provide skills and knowledge
necessary to adjust the planned position indicator (PPI) delay
control and the PPI display. Describe the procedures used to adjust
the identify friend or foe (IFF) display.
Given this subcourse, pencil, and paper.
Demonstrate competency of task skills and
knowledge by correctly responding to 75 percent of the multiple-
choice test questions covering radar set AN/FPN-40.
Learning Event 1:
ADJUST THE PRECISION DISPLAY
Learning Event 1 will enable you to locate and identify
precision display adjustment controls, and components of the control
indicator group OA-2664/FPN-40 as well as interpret information
displayed on the cathode ray tube (CRT) of radar set AN/FPN-40.
Location and initial settings of components and controls are
a. Locate the control indicator group OA-2664/FPN-40 on radar set
AN/FPN-40 (Figure 3).