Rosen DP-1001 Owenrs Manual page 112

Button Description
received once a second from the GPS. If you do not need such a detailed
log, you can increase this number to save track log space
Enable Auto-saving
When auto-saving is enabled, you do not need to turn track log saving on
and off manually. Rosen Navigation will automatically start recording the
track log as soon as GPS position is available.
Track Log Database Size
This figure sho\NS how much memory is used by the automatically saved
track logs.
Track Logs Max Size
You can set the maximum database size for the automatically saved track
logs. When the limit is reached, the oldest automatically saved track logs will
be deleted
Create NMEAlSIRF Log
Independently of the normal track log, you can instruct Rosen Navigation to
record the native GPS data received from the GPS device. These logs are
saved as separate text files on the memory card, and they cannot be shown
or replayed in Rosen Navigation.
5 Glossary of Terms
2D/3D GPS reception
The GPS receiver uses satellite signals to calculate its (your) position and need at least four signals to give a
three-dimensional position, including elevation. Because the satellites are moving and because objects can
block the signals, your GPS device might not receive four signals. If three satellites are available, the receiver
can calculate the horizontal GPS position but the accuracy is lower and the GPS device does not give you
elevation data: only 2D reception is possible
Active .'oute
The currently navigated route. You can save and load routes in Rosen Navigation, but only one route can be
active at any given time, and It is always active until you delete it, reach your destination or you qUit Rosen
Navigation. See also Route
City Cente.'
The City Center is not the geometric center of the city but an arbitrary point the map creators have chosen In
towns and villages, it is usually the most important intersection; in larger cities, it is an important intersection.
GPS accuracy
Several factors have Impact on the deviation between your real position and the one given by the GPS device.
For example, signal delay in the ionosphere or reflecting objects near the GPS device have a different and
varying impact on how accurately the GPS device can calculate your position.
Map
62
Button Description
received once a second from the GPS. If you do not need such a detailed
log, you can increase this number to save track log space
Enable Auto-saving
When auto-saving is enabled, you do not need to turn track log saving on
and off manually. Rosen Navigation will automatically start recording the
track log as soon as GPS position is available.
Track Log Database Size
This figure sho\NS how much memory is used by the automatically saved
track logs.
Track Logs Max Size
You can set the maximum database size for the automatically saved track
logs. When the limit is reached, the oldest automatically saved track logs will
be deleted
Create NMEAlSIRF Log
Independently of the normal track log, you can instruct Rosen Navigation to
record the native GPS data received from the GPS device. These logs are
saved as separate text files on the memory card, and they cannot be shown
or replayed in Rosen Navigation.
5 Glossary of Terms
2D/3D GPS reception
The GPS receiver uses satellite signals to calculate its (your) position and need at least four signals to give a
three-dimensional position, including elevation. Because the satellites are moving and because objects can
block the signals, your GPS device might not receive four signals. If three satellites are available, the receiver
can calculate the horizontal GPS position but the accuracy is lower and the GPS device does not give you
elevation data: only 2D reception is possible
Active .'oute
The currently navigated route. You can save and load routes in Rosen Navigation, but only one route can be
active at any given time, and It is always active until you delete it, reach your destination or you qUit Rosen
Navigation. See also Route
City Cente.'
The City Center is not the geometric center of the city but an arbitrary point the map creators have chosen In
towns and villages, it is usually the most important intersection; in larger cities, it is an important intersection.
GPS accuracy
Several factors have Impact on the deviation between your real position and the one given by the GPS device.
For example, signal delay in the ionosphere or reflecting objects near the GPS device have a different and
varying impact on how accurately the GPS device can calculate your position.
Map
62