User Guide

u-center-User Guide
UBX-13005250 - R18

Production Information 4 Concept and Philosophy
Page 14 of 67
Position can be set in a log file. This behaves differently in Play mode and Stop mode. In Stop mode the
position is just set and no data is read and displayed. u-center will start recording or playing from that position
when changing the mode. If position is set in Play mode, u-center will load the data up to this position from
the log file and display the contents.
4.2.6 Database limitations
The number of epochs displayed in u-center can be limited in order to allow an efficient analysis of large log files
and not to consume too much disk space. There is a setting which controls the database limit, which is available
under: Tools -> Preferences -> General. By default the value is set to 0 which means the database size is not
limited. Any other number higher than 0 will limit the size of the database. When this limit is set, then the oldest
values will be discarded after the database reaches this limit size. Data stored to a log file is not affected by the
database limitation.
Figure 8: Example of setting maximum number of epochs to keep in database
For long-term observations, it is recommended to record the messages to a log file.
Attention If a high value of epochs is selected, the display of data in real-time cannot be guaranteed,
especially when graphical views are open.
4.2.7 Receiver information
u-center will try to retrieve some information about what kind of receiver is connected by sending UBX-MON-
VER message on every successful connection. In this way certain functionality can automatically be disabled if it is
not supported by the connected receiver. In some cases this might not be the desired behavior as it might hinder
some other operation where these extra messages are not desired. There is a setting that controls if receiver
information is auto-retrieved or not, and that is available under: Tools -> Preferences -> General. By default the
auto retrieval is enabled.