EFIS-D100 Installation Guide - Dynon Avionics

Autopilot Installation and Configuration
Step 8h – Verify TRN RT LMT and BANK LIMIT settings during turn(s)
During an AP-commanded turn, verify that the time to complete a turn matches your
expectations given the setting for the TRN RT LMT parameter. For example, when TRN RT
LMT is set to 3º/s, a 90º turn should take about 30 seconds. If this is not the case, the bank angle
required by the target turn rate may exceed the set BANK LIMIT parameter. Ensure that during
an AP-commanded turn, the bank angle indicated on the EFIS screen does not reach the angle set
in the BANK LIMIT parameter. If it does, you must either increase BANK LIMIT or decrease
TRN RT LMT.
At this point, all the parameters in the AP > ROLL SERVO menu are properly tuned.
Step 8i – Disengage AP
On the EFIS, perform either of the following:
In the EFIS > AP menu, press the HDGON (or TRKON) button, toggling off the roll servo
On the AP74, press the AP button. The AP status lights on AP button turn off.
STEP 9 – PITCH SERVO FLIGHT TUNING
This set of procedures tunes the settings in the AP > PITCH SERVO menu for the particular
flight characteristics of the aircraft in altitude holds, climbs, and descents.
Step 9a – Verify preferred Airspeed Min/Max and Vertical Speed Max
O n the EFIS, perform the following:
SETUP > AP > PITCH SERVO
Verify that the AIRSP MIN, AIRSP MAX, and VSPD MAX parameters are set to values you
are comfortable with.
If you wish to change any of these values prior to or during flight, push DOWN▼ to select
the value, and then DEC - or INC + to modify it.
Step 9b – Ensure that the aircraft is in trim.
Step 9c – Engage the AP in ALT mode
On the EFIS, perform the following:
EFIS > AP > ALTOFF.
The EFIS synchronizes the ALT bug to the current altitude, the Autopilot engages with the
heading bug as its target, and the indicator turns to ALTON.
If you have an AP74 installed and configured, the following performs the same function:
Push ALT button (activates PITCH servo); ensure that the red ALT indicator lights are on.
Ensure that the HDG indicator lights are off; push the HDG button if they are not.
Push the AP button to engage in ALT mode.
The AP status indicator at the lower left of the EFIS screen displays: AP:OFF-ALT
EFIS-D100 Installation Guide 6-27