Learning Event 4:
ADJUST IFF DISPLAY OF RADAR SET AN/FPN-40
1.
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.
Special Instructions:
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
test.
2.
Location and initial settings of components and controls.
a. Locate the following
items
on
panel,
power
distribution
SB-1116/FPN-40 (Figure 37).
(1) SCAN switch S305.
(2) TRANSMITTER HAV RESET switch.
b. Locate the following items on indicator, azimuth-elevation-
range IP-800/FPN-40 (Figure 38).
(1) RADAR GAIN control.
(2) CRT.
c. Locate
the
RANGE
NAUTICAL
MILES
switch,
S1501,
on
synchronizer-generator, electronic-marker SN-386/FPN-40 (Figure 40).
d. Locate the following items inside
synchronizer-generator,
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.
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