Autopilot Operation
SkyView Classic Pilot’s User Guide –
Revision Z
8-29
Integrated Trim Control Operation
The SV-AP-PANEL has an integrated two channel trim controller that can be used instead of the
normal relay decks that would nominally installed. It is connected to your trim motor(s) (usually
pitch, and sometimes roll or rudder, dependent on the aircraft). It control inputs are normally
wired to the pilot and/or copilot sticks or switches on the panel. When you press and hold the
button or switch corresponding to the trim direction requested, the trim motor moves in that
direction. To enable Auto-Trim while the autopilot is engaged reference the SkyView System
Installation Guide.
Speed Scheduling
When configured, the trim controller's adjustable speed scheduling capability may be set to
slow down the speed of your trim motors as you fly faster so that your trim sensitivity is the
same across your airspeed ranges. This behavior is configured during installation.
Trim Controller Safety Features
Controlling aircraft trim in your aircraft is serious. The SV-AP-PANEL's integrated trim controller
features the following safety features:
•
When the trim controller is connected to two sets of switches or stick controls, one
of them will always take priority over the other when the requested trim commands
disagree. This is normally the "pilot" position, but whether or not this is the left or
right seat or set of controls will vary by aircraft.
•
Although it is contained within the SV-AP-PANEL, the electronics in the trim
controller are powered by aircraft power and are independent from SkyView. Trim
control will remain available even if SkyView itself is unpowered or offline. In this
failsafe condition, the trim controller's speed scheduling is disabled and the trim
motors will run at their full speed when trim is commanded.
•
To protect from a "runaway" trim condition, the longest that a trim motor will run
continuously even when a trim button or switched is continually depressed is five
seconds. After three seconds, the trim motor will cease responding until the trim
button is released and pressed again.
