EFIS-D100 Installation Guide - Dynon Avionics
EFIS-D100 Installation Guide - Dynon Avionics
EFIS-D100 Installation Guide - Dynon Avionics
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PRE-SELECT CONFIGURATION<br />
Autopilot <strong>Installation</strong> and Configuration<br />
In the -BUGS- section of the AP74/76 SETTINGS menu, you can choose when the heading and<br />
altitude bugs should be synchronized to their respective current values:<br />
ON ENGAGE: The HDG and ALT bugs are synchronized to the heading and altitude values<br />
each time the AP is engaged (via the AP button on the AP74 or in the <strong>EFIS</strong> AP menu). This<br />
is the default setting.<br />
ON MODE ARM: The HDG and ALT bugs are synchronized when their respective mode is<br />
armed. When the HDG or TRK buttons are pushed on the AP74, the HDG/TRK bug is<br />
synchronized to the current heading. When the ALT button is pushed on the AP74, the ALT<br />
bug is synchronized to the current altitude. When the autopilot is engaged, the bug settings<br />
are not modified. This allows you to enter a desired heading and/or altitude prior to engaging<br />
the AP.<br />
NEVER: The HDG and ALT bugs are never automatically modified by turning on the AP or<br />
changing AP modes. Be aware that the bugs are highly likely to be set far away from the<br />
current heading and altitude at the time of AP engagement; this will result in the AP<br />
immediately commanding a turn and a climb or descent at time of engage. When using<br />
this mode, we recommend that you verify the <strong>EFIS</strong>’ bugs settings prior to EVERY<br />
Autopilot engage.<br />
MODE CLEARING CONFIGURATION<br />
In the –CLEAR MODES– section, you can configure whether the autopilot clears the active<br />
modes (HDG, TRK, or NAV; and ALT) on AP disengage. If you select NO, the AP leaves the<br />
mode(s) pre-armed when the AP is off. This leaves the last-used roll mode (HDG, TRK, or<br />
NAV) and/or pitch mode (ALT) lights lit on the AP74. You may, of course, switch to new modes<br />
prior to re-engaging the AP. If you select YES, the AP disarms all modes upon disengaging the<br />
AP, turning off all mode lights on the AP74. You must then select the active modes prior to reengaging<br />
the AP (although if no modes are pre-armed, pressing the AP button causes the HDG<br />
mode to be engaged by default).<br />
Clearing modes on disengage is most useful when used in conjunction with the ON MODE<br />
ARM pre-select configuration above. This forces you to explicitly enable (and thus synchronize)<br />
the modes you wish the autopilot to control when you press the AP button.<br />
The default value for this setting is NO, leaving all modes pre-armed after turning off the AP.<br />
<strong>EFIS</strong>-<strong>D100</strong> <strong>Installation</strong> <strong>Guide</strong> 6-31