5.
Now, use this checklist
to
review
the
location
of
the
following
components and controls.
Panel, power distribution SB-1116/FPN-40 to (Figure 45).
Chassis release handles (Figure 29).
OFF CENTERING switch S1503 (Figure 29).
RANGE NAUTICAL MILES switch S-1501 (Figure 29).
OFF CENTERING HORIZ control R1503 (Figure 29).
OFF CENTERING VERT control R1502 (Figure 29).
SCAN ON/OFF switch (Figure 45).
Chassis INTERLOCK (Figure 29).
Vertical sweep amplifier (Figure 47).
Horizontal sweep amplifier (Figure 47).
LEVEL 1 test point TP1701 (Figure 47).
LEVEL 2 test point TP1703 (Figure 47).
LEVEL ADJ control R-1712 (Figure 47).
Learning Event 7:
ALIGN ANGLE VOLTS
1.
Learning Event 7 will enable you to identify and locate components on
radar set AN/FPN-40.
It will provide you with the knowledge necessary to
demonstrate the function and use of the angle volts demodulator and its
alignment, along with the operation of the elevation clinometer. The angle
volts demodulator alignment of radar set AN/FPN-40 is performed to ensure
the proper detected signal is applied to the cursor-generating circuitry and
to the synchronizer-generator, electronic marker SN-386/FPN-40 to provide a
vertical sweep on the cathode ray tube (CRT) during precision operation.
2.
The location and initial settings of the components and controls used
in this learning event are given below.
a. Locate and identify the receiver-transmitter group (R/T group) OA-
2667/FPN-40 (Figure 5).
b. Locate and identify the antenna pedestal subassembly AB-643/FPN-40
on the receiver-transmitter group (Figure 12).
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