HP iPAQ 614c HP iPAQ Trip Guide (UK) - Page 98
Off-route sensitivity, Recalculation delay, U-turn penalty, Cross-border planning
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When the GPS reception is poor (e.g. driving in an urban environment with a low sensitivity GPS), occasional wandering (called position fluctuation) of the calculated GPS position is likely. Although HP iPAQ Trip Guide employs a sophisticated Lock-onRoad system that will mostly suppress these position errors by aligning your position to the recommended 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 HP iPAQ Trip Guide how far the GPS position should be from the recommended route before the program decides to recalculate. Lower values make HP iPAQ Trip Guide insensitive to position errors; higher values will result in quicker reactions. Recalculation delay This is a setting that helps suppress the effects of position fluctuation. 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 fine-tune the way HP iPAQ Trip Guide takes U-turns into account when planning a route. You can tell HP iPAQ Trip Guide 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 Parameters (Page 88). Cross-border planning By default HP iPAQ Trip Guide 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. 98