Altair Glide Computer and Navigation System User Manual Page 55

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XCSoar User Manual
Arm auto advance : This is similar to the Auto method, but it requires the pilot
to arm a trigger. Therefore, if the advancement conditions
are met but the trigger is not armed, the waypoint is not ad-
vanced. The ‘Arm’ button can be used to arm the trigger. It
is accessed via the menu
NAV . Arm advance
Arm auto advance start : This is similar to the Auto method but the start must be
armed. Therefore, the pilot must press the arm button be-
fore starting, and on subsequent waypoints the advancement
is automatic.
Manual advance : Fully manual control. No automatic advancement is per-
formed at all.
In all auto advance modes, the pilot can adjust the current way-
point with the buttons:
NAV . Waypoint next and NAV . Waypoint previous
For PC and touchscreen versions, the user may also manually cy-
cle through the waypoints from XCSoar’s user interface, either by
highlighting the waypoint InfoBox and by pressing the up or down
cursor key.
See Section 4.6 for details on observation rules.
If a user has cycled through the waypoint manually, this does not
mean that the glider has successfully passed the waypoint! How-
ever, this facility is useful to force a task restart or to skip a way-
point when flying a casual cross-country task.
Tasks can be restarted simply by manually cycling back through
the waypoints to the start.
In all modes, if the glider re-enters the start zone or crosses the
start line within 10 minutes of the previous start, the task is auto-
matically restarted.
4.6 Task rules
A variety of task rules may be used when specifying tasks, includ-
ing the common FAI triangles and Assigned Area Tasks (AAT).
Many aspects of the rules can also be customised.
Starting and finishing lines are centered on their associated way-
point and aligned perpendicular to the next and previous waypoints
respectively.
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