Jeppesen FliteDeck 3 - Manual (Page 267)

JeppView FliteDeck User's Guide
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• A mini-mouse meant for portable use with laptops actually can work quite
well.
• A wireless mouse (especially Bluetooth) eliminate the problem of cord tangles
and are more familiar to most people then other pointing devices.
Pens (Passive or Active)
The passive pen can sense and respond to pressure from any object, including a
finger. An active pen, supplied with the more professional level Tablet PCs,
incorporates an electronic device that communicates with the surface of the Tablet’s
display. The position of the pen can be seen over the screen without the pen actually
touching the display.
When holding your arm out-stretched, the pointing precision is greatly reduced.
When adding in the motion of the plane (and turbulence), most users find it
impossible to click on medium to small buttons. To improve the pointing precision,
move the display closer, tilt the display so that it is flat instead of vertical, and brace
your hand against the display or its edge.
The pen interacts with the computer when it is pushed slightly on the screen and
released (the push-tip switch has been triggered). Depending on the pen, you may
get many fast-clicks when trying to position your hand over the intended point on
the screen. The best fix for fast-clicks is to keep the pen away from the display until
a click is wanted.
Many of the pens have a button on the side which is held down while tapping on the
screen to display a right-click menu. With the bouncing in an aircraft, unintentional
right-clicks can occur. Many people hold the pen in such a way that the button is
pressed all or part of the time. This causes the pen to act irrationally because
FliteDeck ignores most right-click actions.
Force Sticks
Force sticks have proven hard to control in turbulence. They can work well if located
on yoke and operated with the thumb. There is no motion feedback, so accuracy is
low.
Touch Pads
A touch pad works by sensing your finger movement and downward pressure. The
stroke length is limited on most touch pads, so large route drags are a problem. In
turbulence, the pad software has trouble with the finger bouncing. Some also have
problems with the varying spot size. Most touch pads are NOT pressure sensitive.
They are directly affected by movement of your finger tip on surface of the touch
pad, so wearing gloves and using pens will not work. The double-tap used to click
features can also present problems in turbulence. The application can also get
confused when fingers or other parts of the hand slightly brush the touch pad.
Touchscreens