10-mile precision on display.
p. The start of the time base sweep (left edge of the time base
sweep) is positioned approximately 1 inch from the left edge of the
q. On SN-386/FPN-40, when the PRECISION HORIZONTAL CENTERING
control R1506 (Figure 18) is rotated clockwise or counterclockwise,
the time base sweep will move right or left.
r. Adjust R1506 slightly clockwise and counterclockwise
observing the precision display on the radar set CRT.