User guide

Configuring output control
D2119 Dart RTLS User Guide 44
firmware restart, or after saving the configuration. For non-critical errors or events, the
system sends the corresponding D-packet only once each time an event or warning
condition occurs. For critical system errors, the system sends the D-packets continuously
until the error is cleared.
Dart Output Stream
With D-packets, the Dart data output stream has the following format:
D,<ID>,<X>,<Y>,<Z>,<battery>,<timestamp>,<DpacketID>,‘readable
info’<LF>
 Locate Data
 Data Quality Indicator (DQI). Select to quantify the quality of the position data that
the
Hub calculates. The Dart RTLS system calculates the DQI through a minimization
process during location computations. DQI data is only meaningful for 2D and
3D data computations where more receivers are used in the computation than
required for minimum calculation. Otherwise (for presence or 1D data), the field
displays an asterisk in the output.
Dart Output Stream
With DQIs, the Dart output stream has the following format for location
messages:
<Data Header>,<tag ID>,<X>,<Y>,<Z>,<battery>,<timestamp>,
<unit>,<DQI><LF>
If a DQI is not available, this field contains an asterisk (*).
For a 2-D (T-packet) or 3-D (R-packet) DQI value to be meaningful, the system must have additional
Receiver information available when computing tag locations. In general, 2-D computations require at least
three Receivers to detect the tag transmission. For a meaningful DQI in a 2-D computation, at least four
Receivers must detect the tag transmission. To guarantee meaningful DQIs, you can increase the minimum
number of Receivers within a virtual computation to four (or more) for a 2-D computation.
 Geometric Dilution of Precision (GDOP). Select to include GDOP value of
calculated tag location. GDOP is calculated based on the output tag location and
configured location of involved receivers. GDOP value is only meaningful for 2D
and 3D data computation. Otherwise (for presence and 1D data), the field
displays an asterisk in the output.
Dart Output Stream
With GDOP, the Dart output stream has the following format for location
messages:
<Data Header>,<tag ID>,<X>,<Y>,<Z>,<battery>,<timestamp>,
<unit>,<GDOP><LF>
 Locate Details. Select to display Receivers used in computing location data. This is