My other GPS unit gets along just fine without
a wheel sensor, do I really need one?
All speed/distance data can be gathered from either GPS or the wheel
sensor.
Trail Tech believes an accurate odometer and hour meter are critical
features. To maintain this accuracy, a wheel sensor is recommended.
1. When using a wheel sensor, Voyager Pro knows to stop logging when the
vehicle stops moving. When you start rolling again, Voyager Pro knows to
resume logging (without a GPS induced lag.)
2. The wheel sensor will track distance, even when the GPS signal is out of
range.
3. GPS cannot tell the difference between a motorcycle moving under its
own power or in the back of a truck.
4. The GPS signal can be lost, especially around metal structures or in
tunnels. With no signal, speed and distance accuracy is lost.
5. GPS cannot see small changes in elevation (i.e. whoops and ruts.) Over
time this will create significant odometer error.
6. GPS is accurate while travelling in straight lines at constant velocity.
However, tight, fast corners will cause the GPS to skip over part of your
path. Over time this will contribute to odometer error.
Can Voyager Pro use GPX files?
GPX (GPS exchange format) is Voyager Pro's native format. Import/export
recorded tracks between the MicroSD and dozens of software programs and
web services.
