Elite VRVD640G - Manual (Page 52)

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vice, the GPS antenna location in the car
and the environment you are driving in,
route recalculation can behave differently.
Cydle may think you have departed the
proposed route and perform a recalcula-
tion even if you have not done so.
When the GPS reception is poor (e.g. driv-
ing in an urban environment with a low sen-
sitivity GPS), occasional wandering (called
position fl uctuation) of the calculated GPS
position is likely. Although Cydle employs
a sophisticated Lock-on-Road system that
will mostly suppress these position errors
by aligning your position to the recom-
mended route and the road network of the
map, sometimes the errors are too large to
correct.
To reduce the effect of large errors, you
can increase the recalculation tolerance
two ways.
Off-route Sensitivity
This is a range of relative values from 0 to
10, telling Cydle how far the GPS position
should be from the recommended route
before the program decides to recalculate.
Lower values make Cydle insensitive to
position errors; higher values will result in
quicker reactions.
Recalculation Delay
This is a setting that helps suppress the
effects of position fl uctuation. With a few
seconds delay in recalculation even large
position jumps can be survived without a
need for route recalculation.
U-Turn Penalty
You can fi ne-tune the way Cydle takes U-
turns into account when planning a route.
You can tell Cydle how much extra distance
you would travel to avoid a U-turn.
NOTE: This value is taken into account only
if U-turns are enabled in Route Param-
eters.
Cross-Border Planning
By default Cydle plans routes using the
border crossing points. However, if you live
near the border, you can disable border
crossing with this switch to remain within
one country.
Keep Position On Road (Lock-on-road)
Cydle is normally used for vehicle naviga-
tion, therefore Lock-on-Road will display
the position arrow precisely over roads,
seamlessly correcting small GPS errors. For
pedestrian use you may consider disabling
Lock-on-Road to make Cydle always show
your exact position.
NOTE: By turning off Lock-on-Road you also
turn off the GPS position error fi ltering. The
position shown on the map will be subject to
all position errors and position fl uctuations.
USER DATA MANAGEMENT
Everything that was saved (pins, My POIs,
Favourites, track logs etc.) or modifi ed
(Settings, History lists) since Cydle was in-
stalled is stored in a user database located
in the internal memory of the PNA. Here
you have options to save, restore or reset
the database or parts of it.
Navigation System