BendixKing IN-862A System RDR-2100 - Manual (Page 44)

6. Turn the STAB on. If the pattern
appears as Figure 2 or 3, the RDR
2100 can compensate for this using
ROLL TRIM. Adjust the ROLL
TRIM with a small screwdriver
through access on radar indicator
controller until figure 1 is achieved.
7. Roll the aircraft gently to the right
auto pilot bank angle.
8. For perfect stabilization, the pattern
shown in Figure 1 should not shift.
The information displayed will
change, however, the inner
extremity should remain coincident
with the third range mark.
9. If the pattern shifts as shown in
Figure 2, increase the tilt angle until
the edge of the video pattern
reaches the same position as the
center was before the roll
maneuver. Note the new position
of the tilt control. Proceed to step
11.
10. If the pattern shifts as shown in
Figure 3, decrease the tilt angle until
the edge of the video pattern
reaches the same position as the
center was before the roll
maneuver. Note the new position of
the tilt control. Proceed to step 11.
11. If the differences between Steps 9
and 4 or 10 and 4 are greater than
2 degrees the system should be
ground checked to recalibrate the roll stabilization circuitry to the gyro.
12. If the pattern shifts per Figure 4, there is no roll stabilization and the
system should be ground checked per the Installation Manual.
13. Check pitch performance as follows: Re-establish Figure 1 by flying
straight and level. Momentarily pitch the aircraft up 5 degrees (no
more than 10 to 20 seconds to minimize altitude change). If the inner
ring of clutter moves further out in range, readjust the tilt downward
until the pattern returns as it was before the pitch maneuver. Note the
tilt change. If the clutter moved inward, adjust the tilt upward and note
the change. If the tilt change is greater than 2 degrees, the system
should be ground checked to recalibrate the pitch.
40
Effective Date: 9/98 RDR 2100 Pilot's Guide: Rev 1
Antenna Stabilization
Figure 2
Figure 3
Figure 4
RDR 2100 PG 3/12/07 3:45 PM Page 40