o. Rotate the ANGLE VOLTS, ARTIFICIAL Control R-402 on the navigational
computer chassis until the multimeter indicates the voltage recorded in step
m.
p. Rotate the AZ ANGLE control (for the runway cursor you are adjusting)
on the navigational computer chassis while observing the CRT presentation.
Rotate the AZ ANGLE control until the cursor pulse intersects the 6-mile
range mark (seventh range mark).
q. Adjust the ANGLE VOLTS, ARTIFICIAL Control R-402 on the navigational
computer chassis until the multimeter indicates the voltage recorded in step
m.
r. Rotate the AZ RUNWAY control (for the runway cursor you are adjusting)
on the navigational computer chassis while observing the CRT presentation.
Rotate the AZ RUNWAY control until the cursor pulse intersects the 1-mile
range mark (second range mark).
s. Repeat steps o through r until the cursor pulse intersects at both the
1- and 6-mile range marks.
t. Place the ART EL-OPERATE-ART AZ Switch
S-401
on
the
navigational
computer chassis to the OPERATE position.
u. Depress the TRANSMITTER HV ON button on the Panel, Power Distribution
SB-1116/FPN-40.
v. Place the SCAN Switch S-305
on
the Panel,
Power Distribution SB-
1116/FPN-40 to the ON position.
w. Observe the azimuth presentation.
If cursor does not pass midway
between the leading edges of the radar reflections from the end of runway
bracketing reflectors, rotate the CUR LIN ADJ potentiometer (for the runway
cursor you are adjusting) on the navigational computer chassis until it does
pass midway.
x. Observe the azimuth presentation to ensure that the cursor intersects
the 1-mile and 6-mile range marks and passes midway between radar
reflections of the bracketing reflectors. If this condition does not exist,
repeat steps i and j, and steps o through x until it does.
NOTE:
This entire procedure will need to be repeated for each of the
other three runway cursors.
y. You have completed the AN/FPN-40 azimuth cursor alignment.
In doing
so, you have ensured that the displayed azimuth cursor is an accurate
representation of the course line which the pilot follows when making a
landing. Restore the radar set to its operating condition by securing the
navigational computer chassis.
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