Navaid Devices AP-1, Руководство пользователя

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TEST FLIGHT AND CALIBRATION
Take off, get some altitude, and set up a level cruise. If you have cockpit adjustable trim,
set it as necessary to achieve straight line flight.
Flip the Mode Switch rightward to the Wing Leveler position. The autopilot should take
control. The airplane probably will start a gentle turn indicating an out-of-trim condition.
If the system gain is set too high, the stick may feel jittery and the airplane may weave
back and forth.
SETTING SYSTEM GAIN
The autopilot should fly the airplane in a manner more or less similar to that of human
pilots. If the stick action feels too jittery for the weather conditions, or if the airplane is
continually hunting (oscillating) back and forth like a snake trying to follow a straight
line, the system gain is probably set too high for your aircraft.
Remembering that the trimpots should not be forced beyond their 9 o'clock and 3 o'clock
stops, you lower system gain by turning the SPAN trimpot counterclockwise. Decrease
the gain (turn SPAN trimpot counterclockwise) until the stick calms down, then increase
it to the point where the stick becomes jittery again. With your airplane operating at its
usual cruise speed, set the gain as high as possible without oscillation or jittery stick
movement.
If the SPAN trimpot ends up being set below 75 of maximum (full clockwise), the servo
RANGE trimpot is set too high and tracking performance may be degraded. The
following procedure increases servo resolution without changing system gain. Land the
airplane and measure (better write it down) the full range of aileron movement obtainable
using the TURN CONTROL with the autopilot in Wing Leveler mode.
Set the SPAN to about 90 of full clockwise rotation.
Adjust the RANGE trimpot on the servo printed circuit board to restore that same range
of aileron deflection.
TRIMMING THE AUTOPILOT
Do not touch the TRIM or TURN CONTROL now (they should already be at midrange).
Adjust the TRIM RANGE trimpot to make the aircraft fly straight. Note that you do not
adjust the airplane for wings level—sometimes a rudder out of trim makes it necessary to
fly with one wing a little low to achieve straight line flight. If you are flying in smooth
air, it should be possible to adjust the TRIM RANGE trimpot so that the airplane will
stay lined up on a distant target.