User Guide

u-center-User Guide
UBX-13005250 - R18

Production Information 4 Concept and Philosophy
Page 11 of 67
u-center provides various view classes (described below) for display and presentation. Most views take their data
from the database, but some get their data directly from the message without using the database at all. The
other views are updated when the database changes.
• Message Views display and decode a copy of every known message. These views allow observing a single
message in detail and they may also be used to configure the GNSS device. Refer to Messages view for
details. The configuration view is a subset of the message view and only displays message to configure
the receiver.
• Console Views display the messages in text form. There is also a wide range of information available
which is useful for evaluation and testing. Refer to sections Packet console, Binary console and Text console
for details.
• Graphical Views display parameters from the database in graphical form. Charts (see Chart view),
histograms (see Histogram view) and a map view (see Map view) can be created. There are two more views
(deviation map and sky view, see Deviation map and Sky view) that may be used for statistical performance
and antenna pattern analysis.
• Tabular Views show the parameters of the database in tabular form. They can be freely configured to
allow customized tables. Refer to Table view and Statistic view for details.
• Docking Windows can be docked to the frame of u-center. An analog watch, compass, world map,
altitude and speed meter are available. There are also docking windows showing the current signal power
and the constellation of the satellites received by the device as well as a summary of the GNSS status.
Displaying various views and docking windows requires computing power. Minimizing or closing them
may significantly reduce CPU usage.
4.1 Color and satellite coding scheme
In the graphical views and some docking windows, colors are used to indicate data quality. Table 1 shows the
color codes for graphical views depending on the quality of the navigation solution.
Color Meaning
Yellow Current value
Orange Valid 3D navigation fix + Dead Reckoning
Green Valid 3D navigation fix
Cyan Valid 2D navigation fix
Magenta Dead Reckoning fix
Blue Degraded navigation fix
Red No or invalid navigation fix
Table 1: Color-coding scheme for graphical views
Table 2 gives the color-coding scheme for the docking windows and sky view. It indicates the state of each satellite.
Color Meaning
Green Satellite used in navigation (with Ephemeris)
Olive Satellite used in navigation (with Ephemeris and PPP)
Dark Green Satellite used in navigation (with aiding data: AssistNow Autonomous, AssistNow Online/Offline)
Cyan Satellite signal available, available for use in navigation
Blue Satellite signal available, not available for use in navigation
Red Satellite signal not available
Table 2: Color-coding scheme for the docking windows and sky view