Learning Event 4:
ADJUST IFF DISPLAY OF RADAR SET AN/FPN-40
Learning Event 4 will enable you to describe the adjustment of
the IFF display, the function and use of components, and learn the
function and operation of the RANGE NAUTICAL MILES switch.
This lesson requires you to answer questions
concerning the IFF display of radar set AN/FPN-40.
If you fail to
obtain the desired results, reread this learning event and retake the
Location and initial settings of components and controls.
a. Locate the following
SB-1116/FPN-40 (Figure 37).
(1) SCAN switch S305.
b. Locate the following items on indicator, azimuth-elevation-
range IP-800/FPN-40 (Figure 38).
(1) RADAR GAIN control.
synchronizer-generator, electronic-marker SN-386/FPN-40 (Figure 40).
d. Locate the following items inside
electronic-marker SN-386/FPN-40 (Figure 57).
(1) HOR IFF ADJ control R1644.
(2) VERT IFF ADJ control R1645.
(3) HOR IFF OFF CENTERING control R1517.
(4) VERT IFF OFF CENTERING control R1518.