User`s guide

Page 42 May 15, 2012 • Alcorn McBride TourTraXX User’s Manual • Rev 1.3
the small buttons to the right of each cell will provide further help with that
cell’s contents. The following explains each column in detail.
Command
The Command column contains the command to be executed at a particular
Longitude and Latitude (if specified). A pull-down menu of available
commands is provided. Often, this command is a Play command because
you normally want to play a particular audio file at a specified location.
Data Columns
The Data columns are used to supply additional data for commands that
require it. For example, a Play command would require data to specify
which file to play.
Direction
The Direction column specifies the direction the vehicle must be traveling in
order for the trigger to occur. The TourTraXX allows for 45 degrees of
tolerance for this field, so there’s no need to worry about the direction of the
vehicle being absolutely perfect. For example, if the heading field is 90
degrees, the TourTraXX will accept any heading between 67 degrees and
113 degrees as a valid condition for the trigger.
If you don’t require direction to be a factor in the GPS triggers, you can
make the GPS trigger Omni-directional by leaving the contents of this field
blank.
This field can be filled manually, but is also inserted automatically when
using the capture feature of GPS Builder.
Latitude and Longitude
The Latitude and Longitude fields specify the coordinates the command will
be executed. These fields can be entered manually, or they can be inserted
automatically using the Capture feature of GPS Builder.
Tolerance
Longitude and Latitude data provided by the GPS sensor is updated at one-
second intervals (this is a function of all GPS sensors). As a result, it is
extremely unlikely that the exact coordinates entered in the Latitude and
Longitude fields will be encountered.
The Tolerance field is used to define the size of a circular GPS ‘Zone’
around the specified coordinates. The size of this zone can vary greatly
depending on the speed at which the vehicle is traveling as well as how far
the vehicle can possibly stray from the center of the zone (i.e. a vehicle
traveling on a multi-lane highway may not always be in the same lane).
Clicking on the button located in this field will reveal a helpful utility for
setting the Tolerance based on the size of the zone or speed of travel.