Dynon Avionics EFIS-D10A Installation Guide - Manual (Page 68)

Autopilot Installation and Configuration
6-28 EFIS-D10A Installation Guide
 The AP status indicator at the lower left of the EFIS screen displays: AP:OFF- ALT.
e AP’s altitude hold and change performance.
Step 9d – Allow a few minutes of stable flight under AP control
Note that the AP is only flying in Altitude Hold Mode, so you will need to control the aircraft in
roll. Ensure that you are not affecting the Autopilot’s control of the pitch axis, so you can
determine th
Step 9e – Adjust pitch servo TORQUE and/or SENSITIVITY values as needed
On the EFIS, observe the AP status indicator (lower left corner - AP:OFF- ALT ) while the AP
the ALT indicator is frequently highlighted yellow, that is an indication that the Pitch
s slipping and the torque needs to be increased. Occasional slips due to turbulence are
ble.
sary, adjust the TORQUE value in the EFIS > SETUP >
flies. If
Servo i
accepta
If neces
AP > PITCH SERVO menu.
If you have adjusted the pitch servo TORQUE value to 100% and are st
slips, you may need to move the linkage attachment point on the pitch
to the shaft. When doing this, take all precautions to ensure that an ov
cannot occur and that the servo can provi ill s
servo
er cen
de the necessary travel for you
le
e numerical magnetic
eeing frequent
1 hole closer
ter condition
r system. If a
mechanical solution is not possible, you may wish to try a higher strength servo (e.g., if
you have an SV32 installed, try swapping for an SV42).
After verifying that the TORQUE value is set appropriately, watch closely for AP
“wandering” around the target altitude. The AP should keep the inverted triang
of the altitude bug closely aligned with the triangle of th
altitude indicator (as shown at right).
If excessive wandering is observed, increase the SENSITIVY parameter in the EFIS >
SETUP > AP > PITCH SERVO menu. If the AP control seems “twitchy” or aggressive,
decrease the SENSITIVITY value. All adjustments of SE
NSITIVITY should be done in
crements of 1 or 2, allowing you to notice subtle changes in control.
ep 9f
Change
 e EFIS > AP > BUGS > ALT menu, press SEL► to highlight the
in
St – Initiate AP-controlled climbs and descents
the ALT bug to 500 feet above your current altitude via any of these methods:
On the EFIS, enter th
hundreds digit, and press INC + to set desired altitude.
On the AP74 or HS34, press the VALUE knob (or just begin rotating knob, if you have
configured the VALUE KNOB settings to allow for immediate adjustment of the altitude
bug) until the ALT bug adjustment window is displayed. Rotate the knob until the d
target altitude is set.
As soon as the altitude bug is changed, the AP begins changing the aircraft’s altitude
esired
to follow.
Repeat this step, setting the altitude bug to 500 feet below your current altitude.
Step 9g – Verify pitch TORQUE and SENSITIVITY settings during climbs and descents